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authorCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
committerCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
commit05dedace84ef8c93fea5309c3ac55f889011429b (patch)
tree4c7f513afbbc03060039a165d1770e11be711773 /src/backend/commands/trigger.c
parentd84fe82230c593f3dc5d7f427849b99d1efa8a0a (diff)
This commit was manufactured by cvs2git to create branch 'ecpg_big_bison'.
Sprout from master 2002-06-20 20:29:54 UTC Bruce Momjian <bruce@momjian.us> 'Update copyright to 2002.' 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src/include/storage/buf.h src/include/storage/buf_internals.h src/include/storage/buffile.h src/include/storage/bufmgr.h src/include/storage/bufpage.h src/include/storage/fd.h src/include/storage/freespace.h src/include/storage/ipc.h src/include/storage/item.h src/include/storage/itemid.h src/include/storage/itempos.h src/include/storage/itemptr.h src/include/storage/large_object.h src/include/storage/lmgr.h src/include/storage/lock.h src/include/storage/lwlock.h src/include/storage/off.h src/include/storage/page.h src/include/storage/pg_sema.h src/include/storage/pg_shmem.h src/include/storage/pmsignal.h src/include/storage/pos.h src/include/storage/proc.h src/include/storage/relfilenode.h src/include/storage/s_lock.h src/include/storage/shmem.h src/include/storage/sinval.h src/include/storage/sinvaladt.h src/include/storage/smgr.h src/include/storage/spin.h src/include/strdup.h src/include/tcop/dest.h src/include/tcop/fastpath.h src/include/tcop/pquery.h src/include/tcop/tcopdebug.h src/include/tcop/tcopprot.h src/include/tcop/utility.h src/include/utils/acl.h src/include/utils/array.h src/include/utils/ascii.h src/include/utils/bit.h src/include/utils/builtins.h src/include/utils/cash.h src/include/utils/catcache.h src/include/utils/date.h src/include/utils/datetime.h src/include/utils/datum.h src/include/utils/dynahash.h src/include/utils/dynamic_loader.h src/include/utils/elog.h src/include/utils/exc.h src/include/utils/excid.h src/include/utils/fcache.h src/include/utils/fmgrtab.h src/include/utils/formatting.h src/include/utils/geo_decls.h src/include/utils/guc.h src/include/utils/hsearch.h src/include/utils/inet.h src/include/utils/int8.h src/include/utils/inval.h src/include/utils/logtape.h src/include/utils/lsyscache.h src/include/utils/memutils.h src/include/utils/nabstime.h src/include/utils/numeric.h src/include/utils/palloc.h src/include/utils/pg_crc.h src/include/utils/pg_locale.h src/include/utils/pg_lzcompress.h src/include/utils/portal.h src/include/utils/ps_status.h src/include/utils/rel.h src/include/utils/relcache.h src/include/utils/selfuncs.h src/include/utils/sets.h src/include/utils/syscache.h src/include/utils/timestamp.h src/include/utils/tqual.h src/include/utils/tuplesort.h src/include/utils/tuplestore.h src/include/utils/varbit.h src/interfaces/Makefile src/interfaces/cli/example1.c src/interfaces/cli/example2.c src/interfaces/cli/sqlcli.h src/interfaces/jdbc/CHANGELOG src/interfaces/jdbc/Implementation src/interfaces/jdbc/Makefile src/interfaces/jdbc/README src/interfaces/jdbc/build.xml src/interfaces/jdbc/example/ImageViewer.java src/interfaces/jdbc/example/Unicode.java src/interfaces/jdbc/example/basic.java src/interfaces/jdbc/example/blobtest.java src/interfaces/jdbc/example/corba/StockClient.java src/interfaces/jdbc/example/corba/StockDB.java src/interfaces/jdbc/example/corba/StockDispenserImpl.java src/interfaces/jdbc/example/corba/StockItemImpl.java src/interfaces/jdbc/example/corba/StockServer.java src/interfaces/jdbc/example/corba/readme src/interfaces/jdbc/example/corba/stock.idl src/interfaces/jdbc/example/corba/stock.sql src/interfaces/jdbc/example/datestyle.java src/interfaces/jdbc/example/metadata.java src/interfaces/jdbc/example/psql.java src/interfaces/jdbc/example/threadsafe.java src/interfaces/jdbc/jdbc.jpx src/interfaces/jdbc/org/postgresql/Connection.java src/interfaces/jdbc/org/postgresql/Driver.java.in src/interfaces/jdbc/org/postgresql/Field.java src/interfaces/jdbc/org/postgresql/PG_Stream.java src/interfaces/jdbc/org/postgresql/PostgresqlDataSource.java src/interfaces/jdbc/org/postgresql/ResultSet.java src/interfaces/jdbc/org/postgresql/Statement.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim1.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim2.java src/interfaces/jdbc/org/postgresql/core/Encoding.java src/interfaces/jdbc/org/postgresql/core/MemoryPool.java src/interfaces/jdbc/org/postgresql/core/ObjectPool.java src/interfaces/jdbc/org/postgresql/core/QueryExecutor.java src/interfaces/jdbc/org/postgresql/core/SimpleObjectPool.java src/interfaces/jdbc/org/postgresql/core/StartupPacket.java src/interfaces/jdbc/org/postgresql/errors.properties src/interfaces/jdbc/org/postgresql/errors_de.properties src/interfaces/jdbc/org/postgresql/errors_fr.properties src/interfaces/jdbc/org/postgresql/errors_it.properties src/interfaces/jdbc/org/postgresql/errors_nl.properties src/interfaces/jdbc/org/postgresql/errors_zh_TW.properties src/interfaces/jdbc/org/postgresql/fastpath/Fastpath.java src/interfaces/jdbc/org/postgresql/fastpath/FastpathArg.java src/interfaces/jdbc/org/postgresql/geometric/PGbox.java src/interfaces/jdbc/org/postgresql/geometric/PGcircle.java src/interfaces/jdbc/org/postgresql/geometric/PGline.java src/interfaces/jdbc/org/postgresql/geometric/PGlseg.java src/interfaces/jdbc/org/postgresql/geometric/PGpath.java src/interfaces/jdbc/org/postgresql/geometric/PGpoint.java src/interfaces/jdbc/org/postgresql/geometric/PGpolygon.java src/interfaces/jdbc/org/postgresql/jdbc1/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java src/interfaces/jdbc/org/postgresql/jdbc1/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/Array.java src/interfaces/jdbc/org/postgresql/jdbc2/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/Connection.java src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/PBatchUpdateException.java src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/UpdateableResultSet.java src/interfaces/jdbc/org/postgresql/largeobject/BlobInputStream.java src/interfaces/jdbc/org/postgresql/largeobject/BlobOutputStream.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObject.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObjectManager.java src/interfaces/jdbc/org/postgresql/largeobject/PGblob.java src/interfaces/jdbc/org/postgresql/largeobject/PGclob.java src/interfaces/jdbc/org/postgresql/test/JDBC2Tests.java src/interfaces/jdbc/org/postgresql/test/README src/interfaces/jdbc/org/postgresql/test/jdbc2/ANTTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BlobTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ConnectionTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DatabaseMetaDataTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DateTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DriverTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/EncodingTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/JBuilderTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/MiscTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ResultSetTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimeTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimestampTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/UpdateableResultTest.java src/interfaces/jdbc/org/postgresql/util/MD5Digest.java src/interfaces/jdbc/org/postgresql/util/MessageTranslator.java src/interfaces/jdbc/org/postgresql/util/PGbytea.java src/interfaces/jdbc/org/postgresql/util/PGmoney.java src/interfaces/jdbc/org/postgresql/util/PGobject.java src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java src/interfaces/jdbc/org/postgresql/util/PSQLException.java src/interfaces/jdbc/org/postgresql/util/Serialize.java src/interfaces/jdbc/org/postgresql/util/UnixCrypt.java src/interfaces/jdbc/org/postgresql/xa/ClientConnection.java src/interfaces/jdbc/org/postgresql/xa/TwoPhaseConnection.java src/interfaces/jdbc/org/postgresql/xa/TxConnection.java src/interfaces/jdbc/org/postgresql/xa/XAConnectionImpl.java src/interfaces/jdbc/org/postgresql/xa/XADataSourceImpl.java src/interfaces/jdbc/utils/CheckVersion.java src/interfaces/jdbc/utils/buildDriver src/interfaces/jdbc/utils/changelog.pl src/interfaces/libpgeasy/Makefile src/interfaces/libpgeasy/README src/interfaces/libpgeasy/examples/Makefile src/interfaces/libpgeasy/examples/pginsert.c src/interfaces/libpgeasy/examples/pgmultiresult.c src/interfaces/libpgeasy/examples/pgnulltest.c src/interfaces/libpgeasy/examples/pgwordcount.c src/interfaces/libpgeasy/halt.c src/interfaces/libpgeasy/halt.h src/interfaces/libpgeasy/libpgeasy.c src/interfaces/libpgeasy/libpgeasy.h src/interfaces/libpgtcl/Makefile src/interfaces/libpgtcl/README 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src/interfaces/libpq/ru.po src/interfaces/libpq/sv.po src/interfaces/libpq/win32.c src/interfaces/libpq/win32.h src/interfaces/libpq/win32.mak src/interfaces/libpq/zh_CN.po src/interfaces/libpq/zh_TW.po src/interfaces/libpq++/CHANGES src/interfaces/libpq++/Makefile src/interfaces/libpq++/README src/interfaces/libpq++/TODO src/interfaces/libpq++/examples/Makefile src/interfaces/libpq++/examples/testlibpq0.cc src/interfaces/libpq++/examples/testlibpq1.cc src/interfaces/libpq++/examples/testlibpq2.cc src/interfaces/libpq++/examples/testlibpq2.sql src/interfaces/libpq++/examples/testlibpq3.cc src/interfaces/libpq++/examples/testlibpq3.sql src/interfaces/libpq++/examples/testlibpq4.cc src/interfaces/libpq++/examples/testlibpq4.sql src/interfaces/libpq++/examples/testlibpq5.cc src/interfaces/libpq++/examples/testlibpq5.sql src/interfaces/libpq++/examples/testlibpq6.cc src/interfaces/libpq++/examples/testlo.cc src/interfaces/libpq++/libpq++.h src/interfaces/libpq++/libpq++dll.rc src/interfaces/libpq++/pgconnection.cc src/interfaces/libpq++/pgconnection.h src/interfaces/libpq++/pgcursordb.cc src/interfaces/libpq++/pgcursordb.h src/interfaces/libpq++/pgdatabase.cc src/interfaces/libpq++/pgdatabase.h src/interfaces/libpq++/pglobject.cc src/interfaces/libpq++/pglobject.h src/interfaces/libpq++/pgtransdb.cc src/interfaces/libpq++/pgtransdb.h src/interfaces/libpq++/win32.mak src/interfaces/odbc/GNUmakefile src/interfaces/odbc/bind.c src/interfaces/odbc/bind.h src/interfaces/odbc/columninfo.c src/interfaces/odbc/columninfo.h src/interfaces/odbc/connection.c src/interfaces/odbc/connection.h src/interfaces/odbc/convert.c src/interfaces/odbc/convert.h src/interfaces/odbc/descriptor.h src/interfaces/odbc/dlg_specific.c src/interfaces/odbc/dlg_specific.h src/interfaces/odbc/dlg_wingui.c src/interfaces/odbc/drvconn.c src/interfaces/odbc/environ.c src/interfaces/odbc/environ.h src/interfaces/odbc/execute.c src/interfaces/odbc/gpps.c src/interfaces/odbc/gpps.h src/interfaces/odbc/info.c src/interfaces/odbc/info30.c src/interfaces/odbc/iodbc.h src/interfaces/odbc/isql.h src/interfaces/odbc/isqlext.h src/interfaces/odbc/license.txt src/interfaces/odbc/lobj.c src/interfaces/odbc/lobj.h src/interfaces/odbc/md5.c src/interfaces/odbc/md5.h src/interfaces/odbc/misc.c src/interfaces/odbc/misc.h src/interfaces/odbc/multibyte.c src/interfaces/odbc/multibyte.h src/interfaces/odbc/notice.txt src/interfaces/odbc/odbc.sql src/interfaces/odbc/odbcapi.c src/interfaces/odbc/odbcapi25w.c src/interfaces/odbc/odbcapi30.c src/interfaces/odbc/odbcapi30w.c src/interfaces/odbc/odbcapiw.c src/interfaces/odbc/odbcinst.ini src/interfaces/odbc/options.c src/interfaces/odbc/parse.c src/interfaces/odbc/pgapi30.c src/interfaces/odbc/pgapifunc.h src/interfaces/odbc/pgtypes.c src/interfaces/odbc/pgtypes.h src/interfaces/odbc/psqlodbc.c src/interfaces/odbc/psqlodbc.h src/interfaces/odbc/psqlodbc.rc src/interfaces/odbc/psqlodbc.reg src/interfaces/odbc/psqlodbc30.reg src/interfaces/odbc/psqlodbc30w.reg src/interfaces/odbc/psqlodbc_api30.def src/interfaces/odbc/psqlodbc_api30w.def src/interfaces/odbc/psqlodbc_apiw.def src/interfaces/odbc/psqlodbc_win32.def src/interfaces/odbc/qresult.c src/interfaces/odbc/qresult.h src/interfaces/odbc/readme.txt src/interfaces/odbc/resource.h src/interfaces/odbc/results.c src/interfaces/odbc/setup.c src/interfaces/odbc/setup.rul src/interfaces/odbc/socket.c src/interfaces/odbc/socket.h src/interfaces/odbc/statement.c src/interfaces/odbc/statement.h src/interfaces/odbc/tuple.c src/interfaces/odbc/tuple.h src/interfaces/odbc/tuplelist.c src/interfaces/odbc/tuplelist.h src/interfaces/odbc/version.h src/interfaces/odbc/win32.mak src/interfaces/odbc/win32_30.mak src/interfaces/odbc/win32_30w.mak src/interfaces/odbc/win32w.mak src/interfaces/odbc/win_md5.c src/interfaces/odbc/win_setup.h src/interfaces/odbc/win_unicode.c src/interfaces/perl5/Changes src/interfaces/perl5/GNUmakefile src/interfaces/perl5/MANIFEST src/interfaces/perl5/Makefile.PL src/interfaces/perl5/Pg.pm src/interfaces/perl5/Pg.xs src/interfaces/perl5/README src/interfaces/perl5/examples/ApachePg.pl src/interfaces/perl5/examples/example.newstyle src/interfaces/perl5/examples/example.oldstyle src/interfaces/perl5/ppport.h src/interfaces/perl5/test.pl src/interfaces/perl5/typemap src/interfaces/python/Announce src/interfaces/python/ChangeLog src/interfaces/python/GNUmakefile src/interfaces/python/PyGreSQL.spec src/interfaces/python/README src/interfaces/python/README.linux src/interfaces/python/Setup.in.raw src/interfaces/python/pg.py src/interfaces/python/pgdb.py src/interfaces/python/pgmodule.c src/interfaces/python/setup.py src/interfaces/python/tutorial/advanced.py src/interfaces/python/tutorial/basics.py src/interfaces/python/tutorial/func.py src/interfaces/python/tutorial/syscat.py src/interfaces/ssl/client.conf src/interfaces/ssl/mkcert.sh src/interfaces/ssl/pgkeygen.sh src/interfaces/ssl/root.conf src/interfaces/ssl/server.conf src/makefiles/Makefile.aix src/makefiles/Makefile.beos src/makefiles/Makefile.bsdi src/makefiles/Makefile.darwin src/makefiles/Makefile.dgux src/makefiles/Makefile.freebsd src/makefiles/Makefile.hpux src/makefiles/Makefile.irix5 src/makefiles/Makefile.linux src/makefiles/Makefile.netbsd src/makefiles/Makefile.openbsd src/makefiles/Makefile.osf src/makefiles/Makefile.qnx4 src/makefiles/Makefile.sco src/makefiles/Makefile.solaris src/makefiles/Makefile.sunos4 src/makefiles/Makefile.svr4 src/makefiles/Makefile.ultrix4 src/makefiles/Makefile.univel src/makefiles/Makefile.unixware src/makefiles/Makefile.win src/nls-global.mk src/pl/Makefile src/pl/plperl/GNUmakefile src/pl/plperl/README src/pl/plperl/SPI.xs src/pl/plperl/eloglvl.c src/pl/plperl/eloglvl.h src/pl/plperl/plperl.c src/pl/plperl/ppport.h src/pl/plpgsql/Makefile src/pl/plpgsql/src/.cvsignore src/pl/plpgsql/src/INSTALL src/pl/plpgsql/src/Makefile src/pl/plpgsql/src/gram.y src/pl/plpgsql/src/pl_comp.c 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src/test/bench/query01 src/test/bench/query02 src/test/bench/query03 src/test/bench/query04 src/test/bench/query05 src/test/bench/query06 src/test/bench/query07 src/test/bench/query08 src/test/bench/query09 src/test/bench/query10 src/test/bench/query11 src/test/bench/query12 src/test/bench/query13 src/test/bench/query14 src/test/bench/query15 src/test/bench/query16 src/test/bench/query17 src/test/bench/query18 src/test/bench/query19 src/test/bench/query20 src/test/bench/query21 src/test/bench/query22 src/test/bench/query23 src/test/bench/query24 src/test/bench/query25 src/test/bench/query26 src/test/bench/query27 src/test/bench/query28 src/test/bench/query29 src/test/bench/query30 src/test/bench/query31 src/test/bench/query32 src/test/bench/runwisc.sh src/test/bench/wholebench.sh src/test/examples/Makefile src/test/examples/testlibpq.c src/test/examples/testlibpq2.c src/test/examples/testlibpq2.sql src/test/examples/testlibpq3.c src/test/examples/testlibpq3.sql src/test/examples/testlibpq4.c src/test/examples/testlo.c src/test/locale/Makefile src/test/locale/README src/test/locale/de_DE.ISO8859-1/Makefile src/test/locale/de_DE.ISO8859-1/README src/test/locale/de_DE.ISO8859-1/expected/de-ctype.out src/test/locale/de_DE.ISO8859-1/expected/test-de-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-select.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-sort.out src/test/locale/de_DE.ISO8859-1/expected/test-de-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-varchar.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-varchar.sql.out src/test/locale/de_DE.ISO8859-1/runall src/test/locale/de_DE.ISO8859-1/test-de-select.sql.in src/test/locale/de_DE.ISO8859-1/test-de-sort.in src/test/locale/de_DE.ISO8859-1/test-de-upper.sql.in src/test/locale/de_DE.ISO8859-1/test-de.sql.in src/test/locale/gr_GR.ISO8859-7/Makefile src/test/locale/gr_GR.ISO8859-7/README src/test/locale/gr_GR.ISO8859-7/expected/gr-ctype.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-char.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-select.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-sort.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-text.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-varchar.sql.out src/test/locale/gr_GR.ISO8859-7/runall src/test/locale/gr_GR.ISO8859-7/test-gr-select.sql.in src/test/locale/gr_GR.ISO8859-7/test-gr-sort.in src/test/locale/gr_GR.ISO8859-7/test-gr.sql.in src/test/locale/koi8-r/Makefile src/test/locale/koi8-r/expected/koi8-ctype.out src/test/locale/koi8-r/expected/test-koi8-char.sql.out src/test/locale/koi8-r/expected/test-koi8-select.sql.out src/test/locale/koi8-r/expected/test-koi8-sort.out src/test/locale/koi8-r/expected/test-koi8-text.sql.out src/test/locale/koi8-r/expected/test-koi8-varchar.sql.out src/test/locale/koi8-r/runall src/test/locale/koi8-r/test-koi8-select.sql.in src/test/locale/koi8-r/test-koi8-sort.in src/test/locale/koi8-r/test-koi8.sql.in src/test/locale/koi8-to-win1251/Makefile src/test/locale/koi8-to-win1251/README src/test/locale/koi8-to-win1251/expected/test-koi8-char.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-select.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-sort.out src/test/locale/koi8-to-win1251/expected/test-koi8-text.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-varchar.sql.out src/test/locale/koi8-to-win1251/runall src/test/locale/koi8-to-win1251/test-koi8-select.sql.in src/test/locale/koi8-to-win1251/test-koi8-sort.in src/test/locale/koi8-to-win1251/test-koi8.sql.in src/test/locale/sort-test.pl src/test/locale/sort-test.py src/test/locale/test-ctype.c src/test/locale/test-pgsql-locale.c src/test/mb/README src/test/mb/expected/big5.out src/test/mb/expected/euc_cn.out src/test/mb/expected/euc_jp.out src/test/mb/expected/euc_kr.out src/test/mb/expected/euc_tw.out src/test/mb/expected/mule_internal.out src/test/mb/expected/sjis.out src/test/mb/expected/unicode.out src/test/mb/mbregress.sh src/test/mb/sql/big5.sql src/test/mb/sql/euc_cn.sql src/test/mb/sql/euc_jp.sql src/test/mb/sql/euc_kr.sql src/test/mb/sql/euc_tw.sql src/test/mb/sql/mule_internal.sql src/test/mb/sql/sjis.sql src/test/mb/sql/unicode.sql src/test/performance/results/PgSQL.970926 src/test/performance/runtests.pl src/test/performance/sqls/connection src/test/performance/sqls/crtsimple src/test/performance/sqls/crtsimpleidx src/test/performance/sqls/drpsimple src/test/performance/sqls/inssimple src/test/performance/sqls/inssimple.data src/test/performance/sqls/orbsimple src/test/performance/sqls/slcsimple src/test/performance/sqls/slcsimple.data src/test/performance/sqls/vacuum src/test/performance/start-pgsql.sh src/test/regress/GNUmakefile src/test/regress/Makefile src/test/regress/README src/test/regress/data/agg.data src/test/regress/data/constrf.data src/test/regress/data/constro.data src/test/regress/data/dept.data src/test/regress/data/desc.data src/test/regress/data/emp.data src/test/regress/data/hash.data src/test/regress/data/onek.data src/test/regress/data/person.data src/test/regress/data/real_city.data src/test/regress/data/rect.data src/test/regress/data/streets.data src/test/regress/data/stud_emp.data src/test/regress/data/student.data src/test/regress/data/tenk.data src/test/regress/expected/abstime-solaris-1947.out src/test/regress/expected/abstime.out src/test/regress/expected/aggregates.out src/test/regress/expected/alter_table.out src/test/regress/expected/arrays.out src/test/regress/expected/bit.out src/test/regress/expected/boolean.out src/test/regress/expected/box.out src/test/regress/expected/btree_index.out src/test/regress/expected/case.out src/test/regress/expected/char.out src/test/regress/expected/char_1.out src/test/regress/expected/circle.out src/test/regress/expected/comments.out src/test/regress/expected/create_aggregate.out src/test/regress/expected/create_index.out src/test/regress/expected/create_misc.out src/test/regress/expected/create_operator.out src/test/regress/expected/create_table.out src/test/regress/expected/create_type.out src/test/regress/expected/create_view.out src/test/regress/expected/date.out src/test/regress/expected/domain.out src/test/regress/expected/errors.out src/test/regress/expected/euc_cn.out src/test/regress/expected/euc_jp.out src/test/regress/expected/euc_kr.out src/test/regress/expected/euc_tw.out src/test/regress/expected/float4-exp-three-digits.out src/test/regress/expected/float4.out src/test/regress/expected/float8-exp-three-digits.out src/test/regress/expected/float8-fp-exception.out src/test/regress/expected/float8-small-is-zero.out src/test/regress/expected/float8.out src/test/regress/expected/foreign_key.out src/test/regress/expected/geometry-alpha-precision.out src/test/regress/expected/geometry-bsdi-precision.out src/test/regress/expected/geometry-i86-gnulibc.out src/test/regress/expected/geometry-intel-beos.out src/test/regress/expected/geometry-irix.out src/test/regress/expected/geometry-positive-zeros-bsd.out src/test/regress/expected/geometry-positive-zeros.out src/test/regress/expected/geometry-powerpc-aix4.out src/test/regress/expected/geometry-powerpc-darwin.out src/test/regress/expected/geometry-powerpc-linux-gnulibc1.out src/test/regress/expected/geometry-solaris-i386-pc.out src/test/regress/expected/geometry-solaris-precision.out src/test/regress/expected/geometry-uw7-cc.out src/test/regress/expected/geometry-uw7-gcc.out src/test/regress/expected/geometry.out src/test/regress/expected/hash_index.out src/test/regress/expected/horology-no-DST-before-1970.out src/test/regress/expected/horology-solaris-1947.out src/test/regress/expected/horology.out src/test/regress/expected/inet.out src/test/regress/expected/inherit.out src/test/regress/expected/insert.out src/test/regress/expected/int2.out src/test/regress/expected/int4.out src/test/regress/expected/int8-exp-three-digits.out src/test/regress/expected/int8.out src/test/regress/expected/interval.out src/test/regress/expected/join.out src/test/regress/expected/limit.out src/test/regress/expected/lseg.out src/test/regress/expected/mule_internal.out src/test/regress/expected/name.out src/test/regress/expected/numeric.out src/test/regress/expected/numeric_big.out src/test/regress/expected/numerology.out src/test/regress/expected/oid.out src/test/regress/expected/oidjoins.out src/test/regress/expected/opr_sanity.out src/test/regress/expected/path.out src/test/regress/expected/plpgsql.out src/test/regress/expected/point.out src/test/regress/expected/polygon.out src/test/regress/expected/portals.out src/test/regress/expected/portals_p2.out src/test/regress/expected/privileges.out src/test/regress/expected/random.out src/test/regress/expected/reltime.out src/test/regress/expected/rules.out src/test/regress/expected/sanity_check.out src/test/regress/expected/select.out src/test/regress/expected/select_distinct.out src/test/regress/expected/select_distinct_on.out src/test/regress/expected/select_having.out src/test/regress/expected/select_having_1.out src/test/regress/expected/select_implicit.out src/test/regress/expected/select_implicit_1.out src/test/regress/expected/select_into.out src/test/regress/expected/select_views.out src/test/regress/expected/select_views_1.out src/test/regress/expected/sql_ascii.out src/test/regress/expected/strings.out src/test/regress/expected/subselect.out src/test/regress/expected/temp.out src/test/regress/expected/text.out src/test/regress/expected/time.out src/test/regress/expected/timestamp.out src/test/regress/expected/timestamptz.out src/test/regress/expected/timetz.out src/test/regress/expected/tinterval-solaris-1947.out src/test/regress/expected/tinterval.out src/test/regress/expected/transactions.out src/test/regress/expected/triggers.out src/test/regress/expected/type_sanity.out src/test/regress/expected/union.out src/test/regress/expected/varchar.out src/test/regress/expected/varchar_1.out src/test/regress/input/constraints.source src/test/regress/input/copy.source src/test/regress/input/create_function_1.source src/test/regress/input/create_function_2.source src/test/regress/input/misc.source src/test/regress/output/constraints.source src/test/regress/output/copy.source src/test/regress/output/create_function_1.source src/test/regress/output/create_function_2.source src/test/regress/output/misc.source src/test/regress/parallel_schedule src/test/regress/pg_regress.sh src/test/regress/regress.c src/test/regress/regressplans.sh src/test/regress/resultmap src/test/regress/serial_schedule src/test/regress/sql/abstime.sql src/test/regress/sql/aggregates.sql src/test/regress/sql/alter_table.sql src/test/regress/sql/arrays.sql src/test/regress/sql/bit.sql src/test/regress/sql/boolean.sql src/test/regress/sql/box.sql src/test/regress/sql/btree_index.sql src/test/regress/sql/case.sql src/test/regress/sql/char.sql src/test/regress/sql/circle.sql src/test/regress/sql/comments.sql src/test/regress/sql/create_aggregate.sql src/test/regress/sql/create_index.sql src/test/regress/sql/create_misc.sql src/test/regress/sql/create_operator.sql src/test/regress/sql/create_table.sql src/test/regress/sql/create_type.sql src/test/regress/sql/create_view.sql src/test/regress/sql/date.sql src/test/regress/sql/domain.sql src/test/regress/sql/drop.sql src/test/regress/sql/errors.sql src/test/regress/sql/euc_cn.sql src/test/regress/sql/euc_jp.sql src/test/regress/sql/euc_kr.sql src/test/regress/sql/euc_tw.sql src/test/regress/sql/float4.sql src/test/regress/sql/float8.sql src/test/regress/sql/foreign_key.sql src/test/regress/sql/geometry.sql src/test/regress/sql/hash_index.sql src/test/regress/sql/horology.sql src/test/regress/sql/inet.sql src/test/regress/sql/inherit.sql src/test/regress/sql/insert.sql src/test/regress/sql/int2.sql src/test/regress/sql/int4.sql src/test/regress/sql/int8.sql src/test/regress/sql/interval.sql src/test/regress/sql/join.sql src/test/regress/sql/limit.sql src/test/regress/sql/lseg.sql src/test/regress/sql/mule_internal.sql src/test/regress/sql/name.sql src/test/regress/sql/numeric.sql src/test/regress/sql/numeric_big.sql src/test/regress/sql/numerology.sql src/test/regress/sql/oid.sql src/test/regress/sql/oidjoins.sql src/test/regress/sql/opr_sanity.sql src/test/regress/sql/path.sql src/test/regress/sql/plpgsql.sql src/test/regress/sql/point.sql src/test/regress/sql/polygon.sql src/test/regress/sql/portals.sql src/test/regress/sql/portals_p2.sql src/test/regress/sql/privileges.sql src/test/regress/sql/random.sql src/test/regress/sql/reltime.sql src/test/regress/sql/rules.sql src/test/regress/sql/sanity_check.sql src/test/regress/sql/select.sql src/test/regress/sql/select_distinct.sql src/test/regress/sql/select_distinct_on.sql src/test/regress/sql/select_having.sql src/test/regress/sql/select_implicit.sql src/test/regress/sql/select_into.sql src/test/regress/sql/select_views.sql src/test/regress/sql/sql_ascii.sql src/test/regress/sql/strings.sql src/test/regress/sql/subselect.sql src/test/regress/sql/temp.sql src/test/regress/sql/text.sql src/test/regress/sql/time.sql src/test/regress/sql/timestamp.sql src/test/regress/sql/timestamptz.sql src/test/regress/sql/timetz.sql src/test/regress/sql/tinterval.sql src/test/regress/sql/transactions.sql src/test/regress/sql/triggers.sql src/test/regress/sql/type_sanity.sql src/test/regress/sql/union.sql src/test/regress/sql/varchar.sql src/tools/RELEASE_CHANGES src/tools/backend/README src/tools/backend/backend_dirs.html src/tools/backend/flow.fig src/tools/backend/flow.gif src/tools/backend/index.html src/tools/ccsym src/tools/copyright src/tools/entab/Makefile src/tools/entab/entab.c src/tools/entab/entab.man src/tools/entab/halt.c src/tools/find_badmacros src/tools/find_static src/tools/find_typedef src/tools/make_ctags src/tools/make_diff/README src/tools/make_diff/cporig src/tools/make_diff/difforig src/tools/make_diff/rmorig src/tools/make_etags src/tools/make_keywords src/tools/make_mkid src/tools/pgcvslog src/tools/pginclude/README src/tools/pginclude/pgcompinclude src/tools/pginclude/pgdefine src/tools/pginclude/pgfixinclude src/tools/pginclude/pgrminclude src/tools/pgindent/README src/tools/pgindent/indent.bsd.patch src/tools/pgindent/pgcppindent src/tools/pgindent/pgindent src/tools/pgindent/pgjindent src/tutorial/Makefile src/tutorial/README src/tutorial/advanced.source src/tutorial/basics.source src/tutorial/beard.c src/tutorial/complex.c src/tutorial/complex.source src/tutorial/funcs.c src/tutorial/funcs.source src/tutorial/funcs_new.c src/tutorial/syscat.source src/utils/Makefile src/utils/README src/utils/dllinit.c src/utils/getopt.c src/utils/strdup.c src/win32.mak
Diffstat (limited to 'src/backend/commands/trigger.c')
-rw-r--r--src/backend/commands/trigger.c2163
1 files changed, 0 insertions, 2163 deletions
diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
deleted file mode 100644
index 18484372ed5..00000000000
--- a/src/backend/commands/trigger.c
+++ /dev/null
@@ -1,2163 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * trigger.c
- * PostgreSQL TRIGGERs support code.
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.120 2002/06/20 20:29:27 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include "access/genam.h"
-#include "access/heapam.h"
-#include "catalog/catalog.h"
-#include "catalog/catname.h"
-#include "catalog/indexing.h"
-#include "catalog/namespace.h"
-#include "catalog/pg_language.h"
-#include "catalog/pg_proc.h"
-#include "catalog/pg_trigger.h"
-#include "commands/comment.h"
-#include "commands/trigger.h"
-#include "executor/executor.h"
-#include "miscadmin.h"
-#include "parser/parse_func.h"
-#include "utils/acl.h"
-#include "utils/builtins.h"
-#include "utils/fmgroids.h"
-#include "utils/inval.h"
-#include "utils/lsyscache.h"
-#include "utils/syscache.h"
-
-
-static void InsertTrigger(TriggerDesc *trigdesc, Trigger *trigger, int indx);
-static HeapTuple GetTupleForTrigger(EState *estate,
- ResultRelInfo *relinfo,
- ItemPointer tid,
- TupleTableSlot **newSlot);
-static HeapTuple ExecCallTriggerFunc(TriggerData *trigdata,
- FmgrInfo *finfo,
- MemoryContext per_tuple_context);
-static void DeferredTriggerSaveEvent(ResultRelInfo *relinfo, int event,
- HeapTuple oldtup, HeapTuple newtup);
-static void DeferredTriggerExecute(DeferredTriggerEvent event, int itemno,
- Relation rel, FmgrInfo *finfo,
- MemoryContext per_tuple_context);
-
-
-void
-CreateTrigger(CreateTrigStmt *stmt)
-{
- int16 tgtype;
- int16 tgattr[FUNC_MAX_ARGS];
- Datum values[Natts_pg_trigger];
- char nulls[Natts_pg_trigger];
- Relation rel;
- AclResult aclresult;
- Relation tgrel;
- SysScanDesc tgscan;
- ScanKeyData key;
- Relation pgrel;
- HeapTuple tuple;
- Relation idescs[Num_pg_trigger_indices];
- Relation ridescs[Num_pg_class_indices];
- Oid fargtypes[FUNC_MAX_ARGS];
- Oid funcoid;
- Oid funclang;
- int found = 0;
- int i;
- char constrtrigname[NAMEDATALEN];
- char *constrname = "";
- Oid constrrelid = InvalidOid;
-
- rel = heap_openrv(stmt->relation, AccessExclusiveLock);
-
- if (rel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "CreateTrigger: relation \"%s\" is not a table",
- stmt->relation->relname);
-
- if (!allowSystemTableMods && IsSystemRelation(rel))
- elog(ERROR, "CreateTrigger: can't create trigger for system relation %s",
- stmt->relation->relname);
-
- aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
- stmt->isconstraint ? ACL_REFERENCES : ACL_TRIGGER);
- if (aclresult != ACLCHECK_OK)
- aclcheck_error(aclresult, RelationGetRelationName(rel));
-
- /*
- * If trigger is an RI constraint, use trigger name as constraint name
- * and build a unique trigger name instead.
- */
- if (stmt->isconstraint)
- {
- constrname = stmt->trigname;
- snprintf(constrtrigname, sizeof(constrtrigname),
- "RI_ConstraintTrigger_%u", newoid());
- stmt->trigname = constrtrigname;
-
- if (stmt->constrrel != NULL)
- constrrelid = RangeVarGetRelid(stmt->constrrel, false);
- else
- constrrelid = InvalidOid;
- }
-
- TRIGGER_CLEAR_TYPE(tgtype);
- if (stmt->before)
- TRIGGER_SETT_BEFORE(tgtype);
- if (stmt->row)
- TRIGGER_SETT_ROW(tgtype);
- else
- elog(ERROR, "CreateTrigger: STATEMENT triggers are unimplemented, yet");
-
- for (i = 0; i < 3 && stmt->actions[i]; i++)
- {
- switch (stmt->actions[i])
- {
- case 'i':
- if (TRIGGER_FOR_INSERT(tgtype))
- elog(ERROR, "CreateTrigger: double INSERT event specified");
- TRIGGER_SETT_INSERT(tgtype);
- break;
- case 'd':
- if (TRIGGER_FOR_DELETE(tgtype))
- elog(ERROR, "CreateTrigger: double DELETE event specified");
- TRIGGER_SETT_DELETE(tgtype);
- break;
- case 'u':
- if (TRIGGER_FOR_UPDATE(tgtype))
- elog(ERROR, "CreateTrigger: double UPDATE event specified");
- TRIGGER_SETT_UPDATE(tgtype);
- break;
- default:
- elog(ERROR, "CreateTrigger: unknown event specified");
- break;
- }
- }
-
- /*
- * Scan pg_trigger for existing triggers on relation. We do this mainly
- * because we must count them; a secondary benefit is to give a nice
- * error message if there's already a trigger of the same name. (The
- * unique index on tgrelid/tgname would complain anyway.)
- *
- * NOTE that this is cool only because we have AccessExclusiveLock on the
- * relation, so the trigger set won't be changing underneath us.
- */
- tgrel = heap_openr(TriggerRelationName, RowExclusiveLock);
- ScanKeyEntryInitialize(&key, 0,
- Anum_pg_trigger_tgrelid,
- F_OIDEQ,
- ObjectIdGetDatum(RelationGetRelid(rel)));
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 1, &key);
- while (HeapTupleIsValid(tuple = systable_getnext(tgscan)))
- {
- Form_pg_trigger pg_trigger = (Form_pg_trigger) GETSTRUCT(tuple);
-
- if (namestrcmp(&(pg_trigger->tgname), stmt->trigname) == 0)
- elog(ERROR, "CreateTrigger: trigger %s already defined on relation %s",
- stmt->trigname, stmt->relation->relname);
- found++;
- }
- systable_endscan(tgscan);
-
- /*
- * Find and validate the trigger function.
- */
- MemSet(fargtypes, 0, FUNC_MAX_ARGS * sizeof(Oid));
- funcoid = LookupFuncName(stmt->funcname, 0, fargtypes);
- if (!OidIsValid(funcoid))
- elog(ERROR, "CreateTrigger: function %s() does not exist",
- NameListToString(stmt->funcname));
- tuple = SearchSysCache(PROCOID,
- ObjectIdGetDatum(funcoid),
- 0, 0, 0);
- if (!HeapTupleIsValid(tuple))
- elog(ERROR, "CreateTrigger: function %s() does not exist",
- NameListToString(stmt->funcname));
- if (((Form_pg_proc) GETSTRUCT(tuple))->prorettype != 0)
- elog(ERROR, "CreateTrigger: function %s() must return OPAQUE",
- NameListToString(stmt->funcname));
- funclang = ((Form_pg_proc) GETSTRUCT(tuple))->prolang;
- ReleaseSysCache(tuple);
-
- if (funclang != ClanguageId && funclang != INTERNALlanguageId)
- {
- HeapTuple langTup;
-
- langTup = SearchSysCache(LANGOID,
- ObjectIdGetDatum(funclang),
- 0, 0, 0);
- if (!HeapTupleIsValid(langTup))
- elog(ERROR, "CreateTrigger: cache lookup for language %u failed",
- funclang);
- if (((Form_pg_language) GETSTRUCT(langTup))->lanispl == false)
- elog(ERROR, "CreateTrigger: only internal, C and PL functions are supported");
- ReleaseSysCache(langTup);
- }
-
- /*
- * Build the new pg_trigger tuple.
- */
- MemSet(nulls, ' ', Natts_pg_trigger * sizeof(char));
-
- values[Anum_pg_trigger_tgrelid - 1] = ObjectIdGetDatum(RelationGetRelid(rel));
- values[Anum_pg_trigger_tgname - 1] = DirectFunctionCall1(namein,
- CStringGetDatum(stmt->trigname));
- values[Anum_pg_trigger_tgfoid - 1] = ObjectIdGetDatum(funcoid);
- values[Anum_pg_trigger_tgtype - 1] = Int16GetDatum(tgtype);
- values[Anum_pg_trigger_tgenabled - 1] = BoolGetDatum(true);
- values[Anum_pg_trigger_tgisconstraint - 1] = BoolGetDatum(stmt->isconstraint);
- values[Anum_pg_trigger_tgconstrname - 1] = PointerGetDatum(constrname);
- values[Anum_pg_trigger_tgconstrrelid - 1] = ObjectIdGetDatum(constrrelid);
- values[Anum_pg_trigger_tgdeferrable - 1] = BoolGetDatum(stmt->deferrable);
- values[Anum_pg_trigger_tginitdeferred - 1] = BoolGetDatum(stmt->initdeferred);
-
- if (stmt->args)
- {
- List *le;
- char *args;
- int16 nargs = length(stmt->args);
- int len = 0;
-
- foreach(le, stmt->args)
- {
- char *ar = ((Value *) lfirst(le))->val.str;
-
- len += strlen(ar) + 4;
- for (; *ar; ar++)
- {
- if (*ar == '\\')
- len++;
- }
- }
- args = (char *) palloc(len + 1);
- args[0] = '\0';
- foreach(le, stmt->args)
- {
- char *s = ((Value *) lfirst(le))->val.str;
- char *d = args + strlen(args);
-
- while (*s)
- {
- if (*s == '\\')
- *d++ = '\\';
- *d++ = *s++;
- }
- strcpy(d, "\\000");
- }
- values[Anum_pg_trigger_tgnargs - 1] = Int16GetDatum(nargs);
- values[Anum_pg_trigger_tgargs - 1] = DirectFunctionCall1(byteain,
- CStringGetDatum(args));
- }
- else
- {
- values[Anum_pg_trigger_tgnargs - 1] = Int16GetDatum(0);
- values[Anum_pg_trigger_tgargs - 1] = DirectFunctionCall1(byteain,
- CStringGetDatum(""));
- }
- MemSet(tgattr, 0, FUNC_MAX_ARGS * sizeof(int16));
- values[Anum_pg_trigger_tgattr - 1] = PointerGetDatum(tgattr);
-
- tuple = heap_formtuple(tgrel->rd_att, values, nulls);
-
- /*
- * Insert tuple into pg_trigger.
- */
- simple_heap_insert(tgrel, tuple);
- CatalogOpenIndices(Num_pg_trigger_indices, Name_pg_trigger_indices, idescs);
- CatalogIndexInsert(idescs, Num_pg_trigger_indices, tgrel, tuple);
- CatalogCloseIndices(Num_pg_trigger_indices, idescs);
- heap_freetuple(tuple);
- heap_close(tgrel, RowExclusiveLock);
-
- pfree(DatumGetPointer(values[Anum_pg_trigger_tgname - 1]));
- pfree(DatumGetPointer(values[Anum_pg_trigger_tgargs - 1]));
-
- /*
- * Update relation's pg_class entry. Crucial side-effect: other
- * backends (and this one too!) are sent SI message to make them
- * rebuild relcache entries.
- */
- pgrel = heap_openr(RelationRelationName, RowExclusiveLock);
- tuple = SearchSysCacheCopy(RELOID,
- ObjectIdGetDatum(RelationGetRelid(rel)),
- 0, 0, 0);
- if (!HeapTupleIsValid(tuple))
- elog(ERROR, "CreateTrigger: relation %s not found in pg_class",
- stmt->relation->relname);
-
- ((Form_pg_class) GETSTRUCT(tuple))->reltriggers = found + 1;
- simple_heap_update(pgrel, &tuple->t_self, tuple);
- CatalogOpenIndices(Num_pg_class_indices, Name_pg_class_indices, ridescs);
- CatalogIndexInsert(ridescs, Num_pg_class_indices, pgrel, tuple);
- CatalogCloseIndices(Num_pg_class_indices, ridescs);
- heap_freetuple(tuple);
- heap_close(pgrel, RowExclusiveLock);
-
- /*
- * We used to try to update the rel's relcache entry here, but that's
- * fairly pointless since it will happen as a byproduct of the
- * upcoming CommandCounterIncrement...
- */
-
- /* Keep lock on target rel until end of xact */
- heap_close(rel, NoLock);
-}
-
-/*
- * DropTrigger - drop an individual trigger by name
- */
-void
-DropTrigger(Oid relid, const char *trigname)
-{
- Relation rel;
- Relation tgrel;
- SysScanDesc tgscan;
- ScanKeyData key;
- Relation pgrel;
- HeapTuple tuple;
- Relation ridescs[Num_pg_class_indices];
- int remaining = 0;
- int found = 0;
-
- rel = heap_open(relid, AccessExclusiveLock);
-
- if (rel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "DropTrigger: relation \"%s\" is not a table",
- RelationGetRelationName(rel));
-
- if (!allowSystemTableMods && IsSystemRelation(rel))
- elog(ERROR, "DropTrigger: can't drop trigger for system relation %s",
- RelationGetRelationName(rel));
-
- if (!pg_class_ownercheck(relid, GetUserId()))
- aclcheck_error(ACLCHECK_NOT_OWNER, RelationGetRelationName(rel));
-
- /*
- * Search pg_trigger, delete target trigger, count remaining triggers
- * for relation. (Although we could fetch and delete the target
- * trigger directly, we'd still have to scan the remaining triggers,
- * so we may as well do both in one indexscan.)
- *
- * Note this is OK only because we have AccessExclusiveLock on the rel,
- * so no one else is creating/deleting triggers on this rel at the same
- * time.
- */
- tgrel = heap_openr(TriggerRelationName, RowExclusiveLock);
- ScanKeyEntryInitialize(&key, 0,
- Anum_pg_trigger_tgrelid,
- F_OIDEQ,
- ObjectIdGetDatum(relid));
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 1, &key);
- while (HeapTupleIsValid(tuple = systable_getnext(tgscan)))
- {
- Form_pg_trigger pg_trigger = (Form_pg_trigger) GETSTRUCT(tuple);
-
- if (namestrcmp(&(pg_trigger->tgname), trigname) == 0)
- {
- /* Delete any comments associated with this trigger */
- DeleteComments(tuple->t_data->t_oid, RelationGetRelid(tgrel));
-
- simple_heap_delete(tgrel, &tuple->t_self);
- found++;
- }
- else
- remaining++;
- }
- systable_endscan(tgscan);
- heap_close(tgrel, RowExclusiveLock);
-
- if (found == 0)
- elog(ERROR, "DropTrigger: there is no trigger %s on relation %s",
- trigname, RelationGetRelationName(rel));
- if (found > 1) /* shouldn't happen */
- elog(NOTICE, "DropTrigger: found (and deleted) %d triggers %s on relation %s",
- found, trigname, RelationGetRelationName(rel));
-
- /*
- * Update relation's pg_class entry. Crucial side-effect: other
- * backends (and this one too!) are sent SI message to make them
- * rebuild relcache entries.
- */
- pgrel = heap_openr(RelationRelationName, RowExclusiveLock);
- tuple = SearchSysCacheCopy(RELOID,
- ObjectIdGetDatum(relid),
- 0, 0, 0);
- if (!HeapTupleIsValid(tuple))
- elog(ERROR, "DropTrigger: relation %s not found in pg_class",
- RelationGetRelationName(rel));
-
- ((Form_pg_class) GETSTRUCT(tuple))->reltriggers = remaining;
- simple_heap_update(pgrel, &tuple->t_self, tuple);
- CatalogOpenIndices(Num_pg_class_indices, Name_pg_class_indices, ridescs);
- CatalogIndexInsert(ridescs, Num_pg_class_indices, pgrel, tuple);
- CatalogCloseIndices(Num_pg_class_indices, ridescs);
- heap_freetuple(tuple);
- heap_close(pgrel, RowExclusiveLock);
-
- /* Keep lock on target rel until end of xact */
- heap_close(rel, NoLock);
-}
-
-/*
- * Remove all triggers for a relation that's being deleted.
- */
-void
-RelationRemoveTriggers(Relation rel)
-{
- Relation tgrel;
- SysScanDesc tgscan;
- ScanKeyData key;
- HeapTuple tup;
- bool found = false;
-
- tgrel = heap_openr(TriggerRelationName, RowExclusiveLock);
- ScanKeyEntryInitialize(&key, 0,
- Anum_pg_trigger_tgrelid,
- F_OIDEQ,
- ObjectIdGetDatum(RelationGetRelid(rel)));
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 1, &key);
-
- while (HeapTupleIsValid(tup = systable_getnext(tgscan)))
- {
- /* Delete any comments associated with this trigger */
- DeleteComments(tup->t_data->t_oid, RelationGetRelid(tgrel));
-
- simple_heap_delete(tgrel, &tup->t_self);
-
- found = true;
- }
-
- systable_endscan(tgscan);
-
- /*
- * If we deleted any triggers, must update pg_class entry and advance
- * command counter to make the updated entry visible. This is fairly
- * annoying, since we'e just going to drop the durn thing later, but
- * it's necessary to have a consistent state in case we do
- * CommandCounterIncrement() below --- if RelationBuildTriggers()
- * runs, it will complain otherwise. Perhaps RelationBuildTriggers()
- * shouldn't be so picky...
- */
- if (found)
- {
- Relation pgrel;
- Relation ridescs[Num_pg_class_indices];
-
- pgrel = heap_openr(RelationRelationName, RowExclusiveLock);
- tup = SearchSysCacheCopy(RELOID,
- ObjectIdGetDatum(RelationGetRelid(rel)),
- 0, 0, 0);
- if (!HeapTupleIsValid(tup))
- elog(ERROR, "RelationRemoveTriggers: relation %u not found in pg_class",
- RelationGetRelid(rel));
-
- ((Form_pg_class) GETSTRUCT(tup))->reltriggers = 0;
- simple_heap_update(pgrel, &tup->t_self, tup);
- CatalogOpenIndices(Num_pg_class_indices, Name_pg_class_indices, ridescs);
- CatalogIndexInsert(ridescs, Num_pg_class_indices, pgrel, tup);
- CatalogCloseIndices(Num_pg_class_indices, ridescs);
- heap_freetuple(tup);
- heap_close(pgrel, RowExclusiveLock);
- CommandCounterIncrement();
- }
-
- /*
- * Also drop all constraint triggers referencing this relation
- */
- ScanKeyEntryInitialize(&key, 0,
- Anum_pg_trigger_tgconstrrelid,
- F_OIDEQ,
- ObjectIdGetDatum(RelationGetRelid(rel)));
- tgscan = systable_beginscan(tgrel, TriggerConstrRelidIndex, true,
- SnapshotNow, 1, &key);
-
- while (HeapTupleIsValid(tup = systable_getnext(tgscan)))
- {
- Form_pg_trigger pg_trigger = (Form_pg_trigger) GETSTRUCT(tup);
-
- elog(NOTICE, "DROP TABLE implicitly drops referential integrity trigger from table \"%s\"",
- get_rel_name(pg_trigger->tgrelid));
-
- DropTrigger(pg_trigger->tgrelid, NameStr(pg_trigger->tgname));
-
- /*
- * Need to do a command counter increment here to show up new
- * pg_class.reltriggers in the next loop iteration (in case there
- * are multiple referential integrity action triggers for the same
- * FK table defined on the PK table).
- */
- CommandCounterIncrement();
- }
- systable_endscan(tgscan);
-
- heap_close(tgrel, RowExclusiveLock);
-}
-
-/*
- * renametrig - changes the name of a trigger on a relation
- *
- * trigger name is changed in trigger catalog.
- * No record of the previous name is kept.
- *
- * get proper relrelation from relation catalog (if not arg)
- * scan trigger catalog
- * for name conflict (within rel)
- * for original trigger (if not arg)
- * modify tgname in trigger tuple
- * update row in catalog
- */
-void
-renametrig(Oid relid,
- const char *oldname,
- const char *newname)
-{
- Relation targetrel;
- Relation tgrel;
- HeapTuple tuple;
- SysScanDesc tgscan;
- ScanKeyData key[2];
- Relation idescs[Num_pg_trigger_indices];
-
- /*
- * Grab an exclusive lock on the target table, which we will NOT
- * release until end of transaction.
- */
- targetrel = heap_open(relid, AccessExclusiveLock);
-
- /*
- * Scan pg_trigger twice for existing triggers on relation. We do this in
- * order to ensure a trigger does not exist with newname (The unique index
- * on tgrelid/tgname would complain anyway) and to ensure a trigger does
- * exist with oldname.
- *
- * NOTE that this is cool only because we have AccessExclusiveLock on the
- * relation, so the trigger set won't be changing underneath us.
- */
- tgrel = heap_openr(TriggerRelationName, RowExclusiveLock);
-
- /*
- * First pass -- look for name conflict
- */
- ScanKeyEntryInitialize(&key[0], 0,
- Anum_pg_trigger_tgrelid,
- F_OIDEQ,
- ObjectIdGetDatum(relid));
- ScanKeyEntryInitialize(&key[1], 0,
- Anum_pg_trigger_tgname,
- F_NAMEEQ,
- PointerGetDatum(newname));
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 2, key);
- if (HeapTupleIsValid(tuple = systable_getnext(tgscan)))
- elog(ERROR, "renametrig: trigger %s already defined on relation %s",
- newname, RelationGetRelationName(targetrel));
- systable_endscan(tgscan);
-
- /*
- * Second pass -- look for trigger existing with oldname and update
- */
- ScanKeyEntryInitialize(&key[0], 0,
- Anum_pg_trigger_tgrelid,
- F_OIDEQ,
- ObjectIdGetDatum(relid));
- ScanKeyEntryInitialize(&key[1], 0,
- Anum_pg_trigger_tgname,
- F_NAMEEQ,
- PointerGetDatum(oldname));
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 2, key);
- if (HeapTupleIsValid(tuple = systable_getnext(tgscan)))
- {
- /*
- * Update pg_trigger tuple with new tgname.
- */
- tuple = heap_copytuple(tuple); /* need a modifiable copy */
-
- namestrcpy(&((Form_pg_trigger) GETSTRUCT(tuple))->tgname, newname);
-
- simple_heap_update(tgrel, &tuple->t_self, tuple);
-
- /*
- * keep system catalog indices current
- */
- CatalogOpenIndices(Num_pg_trigger_indices, Name_pg_trigger_indices, idescs);
- CatalogIndexInsert(idescs, Num_pg_trigger_indices, tgrel, tuple);
- CatalogCloseIndices(Num_pg_trigger_indices, idescs);
-
- /*
- * Invalidate relation's relcache entry so that other backends (and
- * this one too!) are sent SI message to make them rebuild relcache
- * entries. (Ideally this should happen automatically...)
- */
- CacheInvalidateRelcache(relid);
- }
- else
- {
- elog(ERROR, "renametrig: trigger %s not defined on relation %s",
- oldname, RelationGetRelationName(targetrel));
- }
-
- systable_endscan(tgscan);
-
- heap_close(tgrel, RowExclusiveLock);
-
- /*
- * Close rel, but keep exclusive lock!
- */
- heap_close(targetrel, NoLock);
-}
-
-/*
- * Build trigger data to attach to the given relcache entry.
- *
- * Note that trigger data must be allocated in CacheMemoryContext
- * to ensure it survives as long as the relcache entry. But we
- * are probably running in a less long-lived working context.
- */
-void
-RelationBuildTriggers(Relation relation)
-{
- TriggerDesc *trigdesc;
- int ntrigs = relation->rd_rel->reltriggers;
- Trigger *triggers;
- int found = 0;
- Relation tgrel;
- ScanKeyData skey;
- SysScanDesc tgscan;
- HeapTuple htup;
- struct varlena *val;
- bool isnull;
-
- triggers = (Trigger *) MemoryContextAlloc(CacheMemoryContext,
- ntrigs * sizeof(Trigger));
-
- /*
- * Note: since we scan the triggers using TriggerRelidNameIndex,
- * we will be reading the triggers in name order, except possibly
- * during emergency-recovery operations (ie, IsIgnoringSystemIndexes).
- * This in turn ensures that triggers will be fired in name order.
- */
- ScanKeyEntryInitialize(&skey,
- (bits16) 0x0,
- (AttrNumber) Anum_pg_trigger_tgrelid,
- (RegProcedure) F_OIDEQ,
- ObjectIdGetDatum(RelationGetRelid(relation)));
-
- tgrel = heap_openr(TriggerRelationName, AccessShareLock);
- tgscan = systable_beginscan(tgrel, TriggerRelidNameIndex, true,
- SnapshotNow, 1, &skey);
-
- while (HeapTupleIsValid(htup = systable_getnext(tgscan)))
- {
- Form_pg_trigger pg_trigger = (Form_pg_trigger) GETSTRUCT(htup);
- Trigger *build;
-
- if (found >= ntrigs)
- elog(ERROR, "RelationBuildTriggers: unexpected record found for rel %s",
- RelationGetRelationName(relation));
- build = &(triggers[found]);
-
- build->tgoid = htup->t_data->t_oid;
- build->tgname = MemoryContextStrdup(CacheMemoryContext,
- DatumGetCString(DirectFunctionCall1(nameout,
- NameGetDatum(&pg_trigger->tgname))));
- build->tgfoid = pg_trigger->tgfoid;
- build->tgtype = pg_trigger->tgtype;
- build->tgenabled = pg_trigger->tgenabled;
- build->tgisconstraint = pg_trigger->tgisconstraint;
- build->tgconstrrelid = pg_trigger->tgconstrrelid;
- build->tgdeferrable = pg_trigger->tgdeferrable;
- build->tginitdeferred = pg_trigger->tginitdeferred;
- build->tgnargs = pg_trigger->tgnargs;
- memcpy(build->tgattr, &(pg_trigger->tgattr),
- FUNC_MAX_ARGS * sizeof(int16));
- if (build->tgnargs > 0)
- {
- char *p;
- int i;
-
- val = (struct varlena *) fastgetattr(htup,
- Anum_pg_trigger_tgargs,
- tgrel->rd_att, &isnull);
- if (isnull)
- elog(ERROR, "RelationBuildTriggers: tgargs IS NULL for rel %s",
- RelationGetRelationName(relation));
- p = (char *) VARDATA(val);
- build->tgargs = (char **)
- MemoryContextAlloc(CacheMemoryContext,
- build->tgnargs * sizeof(char *));
- for (i = 0; i < build->tgnargs; i++)
- {
- build->tgargs[i] = MemoryContextStrdup(CacheMemoryContext,
- p);
- p += strlen(p) + 1;
- }
- }
- else
- build->tgargs = NULL;
-
- found++;
- }
-
- systable_endscan(tgscan);
- heap_close(tgrel, AccessShareLock);
-
- if (found != ntrigs)
- elog(ERROR, "RelationBuildTriggers: %d record(s) not found for rel %s",
- ntrigs - found,
- RelationGetRelationName(relation));
-
- /* Build trigdesc */
- trigdesc = (TriggerDesc *) MemoryContextAlloc(CacheMemoryContext,
- sizeof(TriggerDesc));
- MemSet(trigdesc, 0, sizeof(TriggerDesc));
- trigdesc->triggers = triggers;
- trigdesc->numtriggers = ntrigs;
- for (found = 0; found < ntrigs; found++)
- InsertTrigger(trigdesc, &(triggers[found]), found);
-
- relation->trigdesc = trigdesc;
-}
-
-/* Insert the given trigger into the appropriate index list(s) for it */
-static void
-InsertTrigger(TriggerDesc *trigdesc, Trigger *trigger, int indx)
-{
- uint16 *n;
- int **t,
- **tp;
-
- if (TRIGGER_FOR_ROW(trigger->tgtype))
- {
- /* ROW trigger */
- if (TRIGGER_FOR_BEFORE(trigger->tgtype))
- {
- n = trigdesc->n_before_row;
- t = trigdesc->tg_before_row;
- }
- else
- {
- n = trigdesc->n_after_row;
- t = trigdesc->tg_after_row;
- }
- }
- else
- {
- /* STATEMENT trigger */
- if (TRIGGER_FOR_BEFORE(trigger->tgtype))
- {
- n = trigdesc->n_before_statement;
- t = trigdesc->tg_before_statement;
- }
- else
- {
- n = trigdesc->n_after_statement;
- t = trigdesc->tg_after_statement;
- }
- }
-
- if (TRIGGER_FOR_INSERT(trigger->tgtype))
- {
- tp = &(t[TRIGGER_EVENT_INSERT]);
- if (*tp == NULL)
- *tp = (int *) MemoryContextAlloc(CacheMemoryContext,
- sizeof(int));
- else
- *tp = (int *) repalloc(*tp, (n[TRIGGER_EVENT_INSERT] + 1) *
- sizeof(int));
- (*tp)[n[TRIGGER_EVENT_INSERT]] = indx;
- (n[TRIGGER_EVENT_INSERT])++;
- }
-
- if (TRIGGER_FOR_DELETE(trigger->tgtype))
- {
- tp = &(t[TRIGGER_EVENT_DELETE]);
- if (*tp == NULL)
- *tp = (int *) MemoryContextAlloc(CacheMemoryContext,
- sizeof(int));
- else
- *tp = (int *) repalloc(*tp, (n[TRIGGER_EVENT_DELETE] + 1) *
- sizeof(int));
- (*tp)[n[TRIGGER_EVENT_DELETE]] = indx;
- (n[TRIGGER_EVENT_DELETE])++;
- }
-
- if (TRIGGER_FOR_UPDATE(trigger->tgtype))
- {
- tp = &(t[TRIGGER_EVENT_UPDATE]);
- if (*tp == NULL)
- *tp = (int *) MemoryContextAlloc(CacheMemoryContext,
- sizeof(int));
- else
- *tp = (int *) repalloc(*tp, (n[TRIGGER_EVENT_UPDATE] + 1) *
- sizeof(int));
- (*tp)[n[TRIGGER_EVENT_UPDATE]] = indx;
- (n[TRIGGER_EVENT_UPDATE])++;
- }
-}
-
-void
-FreeTriggerDesc(TriggerDesc *trigdesc)
-{
- int **t;
- Trigger *trigger;
- int i;
-
- if (trigdesc == NULL)
- return;
-
- t = trigdesc->tg_before_statement;
- for (i = 0; i < TRIGGER_NUM_EVENT_CLASSES; i++)
- if (t[i] != NULL)
- pfree(t[i]);
- t = trigdesc->tg_before_row;
- for (i = 0; i < TRIGGER_NUM_EVENT_CLASSES; i++)
- if (t[i] != NULL)
- pfree(t[i]);
- t = trigdesc->tg_after_row;
- for (i = 0; i < TRIGGER_NUM_EVENT_CLASSES; i++)
- if (t[i] != NULL)
- pfree(t[i]);
- t = trigdesc->tg_after_statement;
- for (i = 0; i < TRIGGER_NUM_EVENT_CLASSES; i++)
- if (t[i] != NULL)
- pfree(t[i]);
-
- trigger = trigdesc->triggers;
- for (i = 0; i < trigdesc->numtriggers; i++)
- {
- pfree(trigger->tgname);
- if (trigger->tgnargs > 0)
- {
- while (--(trigger->tgnargs) >= 0)
- pfree(trigger->tgargs[trigger->tgnargs]);
- pfree(trigger->tgargs);
- }
- trigger++;
- }
- pfree(trigdesc->triggers);
- pfree(trigdesc);
-}
-
-bool
-equalTriggerDescs(TriggerDesc *trigdesc1, TriggerDesc *trigdesc2)
-{
- int i,
- j;
-
- /*
- * We need not examine the "index" data, just the trigger array
- * itself; if we have the same triggers with the same types, the
- * derived index data should match.
- *
- * As of 7.3 we assume trigger set ordering is significant in the
- * comparison; so we just compare corresponding slots of the two sets.
- */
- if (trigdesc1 != NULL)
- {
- if (trigdesc2 == NULL)
- return false;
- if (trigdesc1->numtriggers != trigdesc2->numtriggers)
- return false;
- for (i = 0; i < trigdesc1->numtriggers; i++)
- {
- Trigger *trig1 = trigdesc1->triggers + i;
- Trigger *trig2 = trigdesc2->triggers + i;
-
- if (trig1->tgoid != trig2->tgoid)
- return false;
- if (strcmp(trig1->tgname, trig2->tgname) != 0)
- return false;
- if (trig1->tgfoid != trig2->tgfoid)
- return false;
- if (trig1->tgtype != trig2->tgtype)
- return false;
- if (trig1->tgenabled != trig2->tgenabled)
- return false;
- if (trig1->tgisconstraint != trig2->tgisconstraint)
- return false;
- if (trig1->tgconstrrelid != trig2->tgconstrrelid)
- return false;
- if (trig1->tgdeferrable != trig2->tgdeferrable)
- return false;
- if (trig1->tginitdeferred != trig2->tginitdeferred)
- return false;
- if (trig1->tgnargs != trig2->tgnargs)
- return false;
- if (memcmp(trig1->tgattr, trig2->tgattr,
- sizeof(trig1->tgattr)) != 0)
- return false;
- for (j = 0; j < trig1->tgnargs; j++)
- if (strcmp(trig1->tgargs[j], trig2->tgargs[j]) != 0)
- return false;
- }
- }
- else if (trigdesc2 != NULL)
- return false;
- return true;
-}
-
-/*
- * Call a trigger function.
- *
- * trigdata: trigger descriptor.
- * finfo: possibly-cached call info for the function.
- * per_tuple_context: memory context to execute the function in.
- *
- * Returns the tuple (or NULL) as returned by the function.
- */
-static HeapTuple
-ExecCallTriggerFunc(TriggerData *trigdata,
- FmgrInfo *finfo,
- MemoryContext per_tuple_context)
-{
- FunctionCallInfoData fcinfo;
- Datum result;
- MemoryContext oldContext;
-
- /*
- * We cache fmgr lookup info, to avoid making the lookup again on each
- * call.
- */
- if (finfo->fn_oid == InvalidOid)
- fmgr_info(trigdata->tg_trigger->tgfoid, finfo);
-
- Assert(finfo->fn_oid == trigdata->tg_trigger->tgfoid);
-
- /*
- * Do the function evaluation in the per-tuple memory context, so that
- * leaked memory will be reclaimed once per tuple. Note in particular
- * that any new tuple created by the trigger function will live till
- * the end of the tuple cycle.
- */
- oldContext = MemoryContextSwitchTo(per_tuple_context);
-
- /*
- * Call the function, passing no arguments but setting a context.
- */
- MemSet(&fcinfo, 0, sizeof(fcinfo));
-
- fcinfo.flinfo = finfo;
- fcinfo.context = (Node *) trigdata;
-
- result = FunctionCallInvoke(&fcinfo);
-
- MemoryContextSwitchTo(oldContext);
-
- /*
- * Trigger protocol allows function to return a null pointer, but NOT
- * to set the isnull result flag.
- */
- if (fcinfo.isnull)
- elog(ERROR, "ExecCallTriggerFunc: function %u returned NULL",
- fcinfo.flinfo->fn_oid);
-
- return (HeapTuple) DatumGetPointer(result);
-}
-
-HeapTuple
-ExecBRInsertTriggers(EState *estate, ResultRelInfo *relinfo,
- HeapTuple trigtuple)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
- int ntrigs = trigdesc->n_before_row[TRIGGER_EVENT_INSERT];
- int *tgindx = trigdesc->tg_before_row[TRIGGER_EVENT_INSERT];
- HeapTuple newtuple = trigtuple;
- HeapTuple oldtuple;
- TriggerData LocTriggerData;
- int i;
-
- /* Allocate cache space for fmgr lookup info, if not done yet */
- if (relinfo->ri_TrigFunctions == NULL)
- {
- relinfo->ri_TrigFunctions = (FmgrInfo *)
- palloc(trigdesc->numtriggers * sizeof(FmgrInfo));
- MemSet(relinfo->ri_TrigFunctions, 0,
- trigdesc->numtriggers * sizeof(FmgrInfo));
- }
-
- LocTriggerData.type = T_TriggerData;
- LocTriggerData.tg_event = TRIGGER_EVENT_INSERT | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
- LocTriggerData.tg_relation = relinfo->ri_RelationDesc;
- LocTriggerData.tg_newtuple = NULL;
- for (i = 0; i < ntrigs; i++)
- {
- Trigger *trigger = &trigdesc->triggers[tgindx[i]];
-
- if (!trigger->tgenabled)
- continue;
- LocTriggerData.tg_trigtuple = oldtuple = newtuple;
- LocTriggerData.tg_trigger = trigger;
- newtuple = ExecCallTriggerFunc(&LocTriggerData,
- relinfo->ri_TrigFunctions + tgindx[i],
- GetPerTupleMemoryContext(estate));
- if (oldtuple != newtuple && oldtuple != trigtuple)
- heap_freetuple(oldtuple);
- if (newtuple == NULL)
- break;
- }
- return newtuple;
-}
-
-void
-ExecARInsertTriggers(EState *estate, ResultRelInfo *relinfo,
- HeapTuple trigtuple)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
-
- if (trigdesc->n_after_row[TRIGGER_EVENT_INSERT] > 0)
- DeferredTriggerSaveEvent(relinfo, TRIGGER_EVENT_INSERT,
- NULL, trigtuple);
-}
-
-bool
-ExecBRDeleteTriggers(EState *estate, ResultRelInfo *relinfo,
- ItemPointer tupleid)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
- int ntrigs = trigdesc->n_before_row[TRIGGER_EVENT_DELETE];
- int *tgindx = trigdesc->tg_before_row[TRIGGER_EVENT_DELETE];
- TriggerData LocTriggerData;
- HeapTuple trigtuple;
- HeapTuple newtuple = NULL;
- TupleTableSlot *newSlot;
- int i;
-
- trigtuple = GetTupleForTrigger(estate, relinfo, tupleid, &newSlot);
- if (trigtuple == NULL)
- return false;
-
- /* Allocate cache space for fmgr lookup info, if not done yet */
- if (relinfo->ri_TrigFunctions == NULL)
- {
- relinfo->ri_TrigFunctions = (FmgrInfo *)
- palloc(trigdesc->numtriggers * sizeof(FmgrInfo));
- MemSet(relinfo->ri_TrigFunctions, 0,
- trigdesc->numtriggers * sizeof(FmgrInfo));
- }
-
- LocTriggerData.type = T_TriggerData;
- LocTriggerData.tg_event = TRIGGER_EVENT_DELETE | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
- LocTriggerData.tg_relation = relinfo->ri_RelationDesc;
- LocTriggerData.tg_newtuple = NULL;
- for (i = 0; i < ntrigs; i++)
- {
- Trigger *trigger = &trigdesc->triggers[tgindx[i]];
-
- if (!trigger->tgenabled)
- continue;
- LocTriggerData.tg_trigtuple = trigtuple;
- LocTriggerData.tg_trigger = trigger;
- newtuple = ExecCallTriggerFunc(&LocTriggerData,
- relinfo->ri_TrigFunctions + tgindx[i],
- GetPerTupleMemoryContext(estate));
- if (newtuple == NULL)
- break;
- if (newtuple != trigtuple)
- heap_freetuple(newtuple);
- }
- heap_freetuple(trigtuple);
-
- return (newtuple == NULL) ? false : true;
-}
-
-void
-ExecARDeleteTriggers(EState *estate, ResultRelInfo *relinfo,
- ItemPointer tupleid)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
-
- if (trigdesc->n_after_row[TRIGGER_EVENT_DELETE] > 0)
- {
- HeapTuple trigtuple = GetTupleForTrigger(estate, relinfo,
- tupleid, NULL);
-
- DeferredTriggerSaveEvent(relinfo, TRIGGER_EVENT_DELETE,
- trigtuple, NULL);
- heap_freetuple(trigtuple);
- }
-}
-
-HeapTuple
-ExecBRUpdateTriggers(EState *estate, ResultRelInfo *relinfo,
- ItemPointer tupleid, HeapTuple newtuple)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
- int ntrigs = trigdesc->n_before_row[TRIGGER_EVENT_UPDATE];
- int *tgindx = trigdesc->tg_before_row[TRIGGER_EVENT_UPDATE];
- TriggerData LocTriggerData;
- HeapTuple trigtuple;
- HeapTuple oldtuple;
- HeapTuple intuple = newtuple;
- TupleTableSlot *newSlot;
- int i;
-
- trigtuple = GetTupleForTrigger(estate, relinfo, tupleid, &newSlot);
- if (trigtuple == NULL)
- return NULL;
-
- /*
- * In READ COMMITTED isolevel it's possible that newtuple was changed
- * due to concurrent update.
- */
- if (newSlot != NULL)
- intuple = newtuple = ExecRemoveJunk(estate->es_junkFilter, newSlot);
-
- /* Allocate cache space for fmgr lookup info, if not done yet */
- if (relinfo->ri_TrigFunctions == NULL)
- {
- relinfo->ri_TrigFunctions = (FmgrInfo *)
- palloc(trigdesc->numtriggers * sizeof(FmgrInfo));
- MemSet(relinfo->ri_TrigFunctions, 0,
- trigdesc->numtriggers * sizeof(FmgrInfo));
- }
-
- LocTriggerData.type = T_TriggerData;
- LocTriggerData.tg_event = TRIGGER_EVENT_UPDATE | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
- LocTriggerData.tg_relation = relinfo->ri_RelationDesc;
- for (i = 0; i < ntrigs; i++)
- {
- Trigger *trigger = &trigdesc->triggers[tgindx[i]];
-
- if (!trigger->tgenabled)
- continue;
- LocTriggerData.tg_trigtuple = trigtuple;
- LocTriggerData.tg_newtuple = oldtuple = newtuple;
- LocTriggerData.tg_trigger = trigger;
- newtuple = ExecCallTriggerFunc(&LocTriggerData,
- relinfo->ri_TrigFunctions + tgindx[i],
- GetPerTupleMemoryContext(estate));
- if (oldtuple != newtuple && oldtuple != intuple)
- heap_freetuple(oldtuple);
- if (newtuple == NULL)
- break;
- }
- heap_freetuple(trigtuple);
- return newtuple;
-}
-
-void
-ExecARUpdateTriggers(EState *estate, ResultRelInfo *relinfo,
- ItemPointer tupleid, HeapTuple newtuple)
-{
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
-
- if (trigdesc->n_after_row[TRIGGER_EVENT_UPDATE] > 0)
- {
- HeapTuple trigtuple = GetTupleForTrigger(estate, relinfo,
- tupleid, NULL);
-
- DeferredTriggerSaveEvent(relinfo, TRIGGER_EVENT_UPDATE,
- trigtuple, newtuple);
- heap_freetuple(trigtuple);
- }
-}
-
-
-static HeapTuple
-GetTupleForTrigger(EState *estate, ResultRelInfo *relinfo,
- ItemPointer tid, TupleTableSlot **newSlot)
-{
- Relation relation = relinfo->ri_RelationDesc;
- HeapTupleData tuple;
- HeapTuple result;
- Buffer buffer;
-
- if (newSlot != NULL)
- {
- int test;
-
- /*
- * mark tuple for update
- */
- *newSlot = NULL;
- tuple.t_self = *tid;
-ltrmark:;
- test = heap_mark4update(relation, &tuple, &buffer,
- GetCurrentCommandId());
- switch (test)
- {
- case HeapTupleSelfUpdated:
- ReleaseBuffer(buffer);
- return (NULL);
-
- case HeapTupleMayBeUpdated:
- break;
-
- case HeapTupleUpdated:
- ReleaseBuffer(buffer);
- if (XactIsoLevel == XACT_SERIALIZABLE)
- elog(ERROR, "Can't serialize access due to concurrent update");
- else if (!(ItemPointerEquals(&(tuple.t_self), tid)))
- {
- TupleTableSlot *epqslot = EvalPlanQual(estate,
- relinfo->ri_RangeTableIndex,
- &(tuple.t_self));
-
- if (!(TupIsNull(epqslot)))
- {
- *tid = tuple.t_self;
- *newSlot = epqslot;
- goto ltrmark;
- }
- }
-
- /*
- * if tuple was deleted or PlanQual failed for updated
- * tuple - we have not process this tuple!
- */
- return (NULL);
-
- default:
- ReleaseBuffer(buffer);
- elog(ERROR, "Unknown status %u from heap_mark4update", test);
- return (NULL);
- }
- }
- else
- {
- PageHeader dp;
- ItemId lp;
-
- buffer = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
-
- if (!BufferIsValid(buffer))
- elog(ERROR, "GetTupleForTrigger: failed ReadBuffer");
-
- dp = (PageHeader) BufferGetPage(buffer);
- lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
-
- Assert(ItemIdIsUsed(lp));
-
- tuple.t_datamcxt = NULL;
- tuple.t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp);
- tuple.t_len = ItemIdGetLength(lp);
- tuple.t_self = *tid;
- }
-
- result = heap_copytuple(&tuple);
- ReleaseBuffer(buffer);
-
- return result;
-}
-
-
-/* ----------
- * Deferred trigger stuff
- * ----------
- */
-
-
-/* ----------
- * Internal data to the deferred trigger mechanism is held
- * during entire session in a global context created at startup and
- * over statements/commands in a separate context which
- * is created at transaction start and destroyed at transaction end.
- * ----------
- */
-static MemoryContext deftrig_gcxt = NULL;
-static MemoryContext deftrig_cxt = NULL;
-
-/* ----------
- * Global data that tells which triggers are actually in
- * state IMMEDIATE or DEFERRED.
- * ----------
- */
-static bool deftrig_dfl_all_isset = false;
-static bool deftrig_dfl_all_isdeferred = false;
-static List *deftrig_dfl_trigstates = NIL;
-
-static bool deftrig_all_isset;
-static bool deftrig_all_isdeferred;
-static List *deftrig_trigstates;
-
-/* ----------
- * The list of pending deferred trigger events during the current transaction.
- *
- * deftrig_events is the head, deftrig_event_tail is the last entry.
- * Because this can grow pretty large, we don't use separate List nodes,
- * but instead thread the list through the dte_next fields of the member
- * nodes. Saves just a few bytes per entry, but that adds up.
- *
- * XXX Need to be able to shove this data out to a file if it grows too
- * large...
- * ----------
- */
-static DeferredTriggerEvent deftrig_events;
-static DeferredTriggerEvent deftrig_event_tail;
-
-
-/* ----------
- * deferredTriggerCheckState()
- *
- * Returns true if the trigger identified by tgoid is actually
- * in state DEFERRED.
- * ----------
- */
-static bool
-deferredTriggerCheckState(Oid tgoid, int32 itemstate)
-{
- MemoryContext oldcxt;
- List *sl;
- DeferredTriggerStatus trigstate;
-
- /*
- * Not deferrable triggers (i.e. normal AFTER ROW triggers and
- * constraints declared NOT DEFERRABLE, the state is allways false.
- */
- if ((itemstate & TRIGGER_DEFERRED_DEFERRABLE) == 0)
- return false;
-
- /*
- * Lookup if we know an individual state for this trigger
- */
- foreach(sl, deftrig_trigstates)
- {
- trigstate = (DeferredTriggerStatus) lfirst(sl);
- if (trigstate->dts_tgoid == tgoid)
- return trigstate->dts_tgisdeferred;
- }
-
- /*
- * No individual state known - so if the user issued a SET CONSTRAINT
- * ALL ..., we return that instead of the triggers default state.
- */
- if (deftrig_all_isset)
- return deftrig_all_isdeferred;
-
- /*
- * No ALL state known either, remember the default state as the
- * current and return that.
- */
- oldcxt = MemoryContextSwitchTo(deftrig_cxt);
-
- trigstate = (DeferredTriggerStatus)
- palloc(sizeof(DeferredTriggerStatusData));
- trigstate->dts_tgoid = tgoid;
- trigstate->dts_tgisdeferred =
- ((itemstate & TRIGGER_DEFERRED_INITDEFERRED) != 0);
- deftrig_trigstates = lappend(deftrig_trigstates, trigstate);
-
- MemoryContextSwitchTo(oldcxt);
-
- return trigstate->dts_tgisdeferred;
-}
-
-
-/* ----------
- * deferredTriggerAddEvent()
- *
- * Add a new trigger event to the queue.
- * ----------
- */
-static void
-deferredTriggerAddEvent(DeferredTriggerEvent event)
-{
- /*
- * Since the event list could grow quite long, we keep track of the
- * list tail and append there, rather than just doing a stupid
- * "lappend". This avoids O(N^2) behavior for large numbers of events.
- */
- event->dte_next = NULL;
- if (deftrig_event_tail == NULL)
- {
- /* first list entry */
- deftrig_events = event;
- deftrig_event_tail = event;
- }
- else
- {
- deftrig_event_tail->dte_next = event;
- deftrig_event_tail = event;
- }
-}
-
-
-/* ----------
- * DeferredTriggerExecute()
- *
- * Fetch the required tuples back from the heap and fire one
- * single trigger function.
- *
- * Frequently, this will be fired many times in a row for triggers of
- * a single relation. Therefore, we cache the open relation and provide
- * fmgr lookup cache space at the caller level.
- *
- * event: event currently being fired.
- * itemno: item within event currently being fired.
- * rel: open relation for event.
- * finfo: array of fmgr lookup cache entries (one per trigger of relation).
- * per_tuple_context: memory context to call trigger function in.
- * ----------
- */
-static void
-DeferredTriggerExecute(DeferredTriggerEvent event, int itemno,
- Relation rel, FmgrInfo *finfo,
- MemoryContext per_tuple_context)
-{
- Oid tgoid = event->dte_item[itemno].dti_tgoid;
- TriggerDesc *trigdesc = rel->trigdesc;
- TriggerData LocTriggerData;
- HeapTupleData oldtuple;
- HeapTupleData newtuple;
- HeapTuple rettuple;
- Buffer oldbuffer;
- Buffer newbuffer;
- int tgindx;
-
- /*
- * Fetch the required OLD and NEW tuples.
- */
- if (ItemPointerIsValid(&(event->dte_oldctid)))
- {
- ItemPointerCopy(&(event->dte_oldctid), &(oldtuple.t_self));
- if (!heap_fetch(rel, SnapshotAny, &oldtuple, &oldbuffer, false, NULL))
- elog(ERROR, "DeferredTriggerExecute: failed to fetch old tuple");
- }
-
- if (ItemPointerIsValid(&(event->dte_newctid)))
- {
- ItemPointerCopy(&(event->dte_newctid), &(newtuple.t_self));
- if (!heap_fetch(rel, SnapshotAny, &newtuple, &newbuffer, false, NULL))
- elog(ERROR, "DeferredTriggerExecute: failed to fetch new tuple");
- }
-
- /*
- * Setup the trigger information
- */
- LocTriggerData.type = T_TriggerData;
- LocTriggerData.tg_event = (event->dte_event & TRIGGER_EVENT_OPMASK) |
- TRIGGER_EVENT_ROW;
- LocTriggerData.tg_relation = rel;
-
- LocTriggerData.tg_trigger = NULL;
- for (tgindx = 0; tgindx < trigdesc->numtriggers; tgindx++)
- {
- if (trigdesc->triggers[tgindx].tgoid == tgoid)
- {
- LocTriggerData.tg_trigger = &(trigdesc->triggers[tgindx]);
- break;
- }
- }
- if (LocTriggerData.tg_trigger == NULL)
- elog(ERROR, "DeferredTriggerExecute: can't find trigger %u", tgoid);
-
- switch (event->dte_event & TRIGGER_EVENT_OPMASK)
- {
- case TRIGGER_EVENT_INSERT:
- LocTriggerData.tg_trigtuple = &newtuple;
- LocTriggerData.tg_newtuple = NULL;
- break;
-
- case TRIGGER_EVENT_UPDATE:
- LocTriggerData.tg_trigtuple = &oldtuple;
- LocTriggerData.tg_newtuple = &newtuple;
- break;
-
- case TRIGGER_EVENT_DELETE:
- LocTriggerData.tg_trigtuple = &oldtuple;
- LocTriggerData.tg_newtuple = NULL;
- break;
- }
-
- /*
- * Call the trigger and throw away an eventually returned updated
- * tuple.
- */
- rettuple = ExecCallTriggerFunc(&LocTriggerData,
- finfo + tgindx,
- per_tuple_context);
- if (rettuple != NULL && rettuple != &oldtuple && rettuple != &newtuple)
- heap_freetuple(rettuple);
-
- /*
- * Might have been a referential integrity constraint trigger. Reset
- * the snapshot overriding flag.
- */
- ReferentialIntegritySnapshotOverride = false;
-
- /*
- * Release buffers
- */
- if (ItemPointerIsValid(&(event->dte_oldctid)))
- ReleaseBuffer(oldbuffer);
- if (ItemPointerIsValid(&(event->dte_newctid)))
- ReleaseBuffer(newbuffer);
-}
-
-
-/* ----------
- * deferredTriggerInvokeEvents()
- *
- * Scan the event queue for not yet invoked triggers. Check if they
- * should be invoked now and do so.
- * ----------
- */
-static void
-deferredTriggerInvokeEvents(bool immediate_only)
-{
- DeferredTriggerEvent event,
- prev_event = NULL;
- MemoryContext per_tuple_context;
- Relation rel = NULL;
- FmgrInfo *finfo = NULL;
-
- /*
- * If immediate_only is true, we remove fully-processed events from
- * the event queue to recycle space. If immediate_only is false,
- * we are going to discard the whole event queue on return anyway,
- * so no need to bother with "retail" pfree's.
- *
- * In a scenario with many commands in a transaction and many
- * deferred-to-end-of-transaction triggers, it could get annoying
- * to rescan all the deferred triggers at each command end.
- * To speed this up, we could remember the actual end of the queue at
- * EndQuery and examine only events that are newer. On state changes
- * we simply reset the saved position to the beginning of the queue
- * and process all events once with the new states.
- */
-
- /* Make a per-tuple memory context for trigger function calls */
- per_tuple_context =
- AllocSetContextCreate(CurrentMemoryContext,
- "DeferredTriggerTupleContext",
- ALLOCSET_DEFAULT_MINSIZE,
- ALLOCSET_DEFAULT_INITSIZE,
- ALLOCSET_DEFAULT_MAXSIZE);
-
- event = deftrig_events;
- while (event != NULL)
- {
- bool still_deferred_ones = false;
- DeferredTriggerEvent next_event;
- int i;
-
- /*
- * Check if event is already completely done.
- */
- if (! (event->dte_event & (TRIGGER_DEFERRED_DONE |
- TRIGGER_DEFERRED_CANCELED)))
- {
- MemoryContextReset(per_tuple_context);
-
- /*
- * Check each trigger item in the event.
- */
- for (i = 0; i < event->dte_n_items; i++)
- {
- if (event->dte_item[i].dti_state & TRIGGER_DEFERRED_DONE)
- continue;
-
- /*
- * This trigger item hasn't been called yet. Check if we
- * should call it now.
- */
- if (immediate_only &&
- deferredTriggerCheckState(event->dte_item[i].dti_tgoid,
- event->dte_item[i].dti_state))
- {
- still_deferred_ones = true;
- continue;
- }
-
- /*
- * So let's fire it... but first, open the correct relation
- * if this is not the same relation as before.
- */
- if (rel == NULL || rel->rd_id != event->dte_relid)
- {
- if (rel)
- heap_close(rel, NoLock);
- if (finfo)
- pfree(finfo);
-
- /*
- * We assume that an appropriate lock is still held by the
- * executor, so grab no new lock here.
- */
- rel = heap_open(event->dte_relid, NoLock);
-
- /*
- * Allocate space to cache fmgr lookup info for triggers
- * of this relation.
- */
- finfo = (FmgrInfo *)
- palloc(rel->trigdesc->numtriggers * sizeof(FmgrInfo));
- MemSet(finfo, 0,
- rel->trigdesc->numtriggers * sizeof(FmgrInfo));
- }
-
- DeferredTriggerExecute(event, i, rel, finfo,
- per_tuple_context);
-
- event->dte_item[i].dti_state |= TRIGGER_DEFERRED_DONE;
- } /* end loop over items within event */
- }
-
- /*
- * If it's now completely done, throw it away.
- *
- * NB: it's possible the trigger calls above added more events to the
- * queue, or that calls we will do later will want to add more,
- * so we have to be careful about maintaining list validity here.
- */
- next_event = event->dte_next;
-
- if (still_deferred_ones)
- {
- /* Not done, keep in list */
- prev_event = event;
- }
- else
- {
- /* Done */
- if (immediate_only)
- {
- /* delink it from list and free it */
- if (prev_event)
- prev_event->dte_next = next_event;
- else
- deftrig_events = next_event;
- pfree(event);
- }
- else
- {
- /*
- * We will clean up later, but just for paranoia's sake,
- * mark the event done.
- */
- event->dte_event |= TRIGGER_DEFERRED_DONE;
- }
- }
-
- event = next_event;
- }
-
- /* Update list tail pointer in case we just deleted tail event */
- deftrig_event_tail = prev_event;
-
- /* Release working resources */
- if (rel)
- heap_close(rel, NoLock);
- if (finfo)
- pfree(finfo);
- MemoryContextDelete(per_tuple_context);
-}
-
-
-/* ----------
- * DeferredTriggerInit()
- *
- * Initialize the deferred trigger mechanism. This is called during
- * backend startup and is guaranteed to be before the first of all
- * transactions.
- * ----------
- */
-void
-DeferredTriggerInit(void)
-{
- /*
- * Since this context will never be reset, give it a minsize of 0.
- * This avoids using any memory if the session never stores anything.
- */
- deftrig_gcxt = AllocSetContextCreate(TopMemoryContext,
- "DeferredTriggerSession",
- 0,
- ALLOCSET_DEFAULT_INITSIZE,
- ALLOCSET_DEFAULT_MAXSIZE);
-}
-
-
-/* ----------
- * DeferredTriggerBeginXact()
- *
- * Called at transaction start (either BEGIN or implicit for single
- * statement outside of transaction block).
- * ----------
- */
-void
-DeferredTriggerBeginXact(void)
-{
- MemoryContext oldcxt;
- List *l;
- DeferredTriggerStatus dflstat;
- DeferredTriggerStatus stat;
-
- if (deftrig_cxt != NULL)
- elog(ERROR,
- "DeferredTriggerBeginXact() called while inside transaction");
-
- /*
- * Create the per transaction memory context and copy all states from
- * the per session context to here. Set the minsize to 0 to avoid
- * wasting memory if there is no deferred trigger data.
- */
- deftrig_cxt = AllocSetContextCreate(TopTransactionContext,
- "DeferredTriggerXact",
- 0,
- ALLOCSET_DEFAULT_INITSIZE,
- ALLOCSET_DEFAULT_MAXSIZE);
- oldcxt = MemoryContextSwitchTo(deftrig_cxt);
-
- deftrig_all_isset = deftrig_dfl_all_isset;
- deftrig_all_isdeferred = deftrig_dfl_all_isdeferred;
-
- deftrig_trigstates = NIL;
- foreach(l, deftrig_dfl_trigstates)
- {
- dflstat = (DeferredTriggerStatus) lfirst(l);
- stat = (DeferredTriggerStatus)
- palloc(sizeof(DeferredTriggerStatusData));
-
- stat->dts_tgoid = dflstat->dts_tgoid;
- stat->dts_tgisdeferred = dflstat->dts_tgisdeferred;
-
- deftrig_trigstates = lappend(deftrig_trigstates, stat);
- }
-
- MemoryContextSwitchTo(oldcxt);
-
- deftrig_events = NULL;
- deftrig_event_tail = NULL;
-}
-
-
-/* ----------
- * DeferredTriggerEndQuery()
- *
- * Called after one query sent down by the user has completely been
- * processed. At this time we invoke all outstanding IMMEDIATE triggers.
- * ----------
- */
-void
-DeferredTriggerEndQuery(void)
-{
- /*
- * Ignore call if we aren't in a transaction.
- */
- if (deftrig_cxt == NULL)
- return;
-
- deferredTriggerInvokeEvents(true);
-}
-
-
-/* ----------
- * DeferredTriggerEndXact()
- *
- * Called just before the current transaction is committed. At this
- * time we invoke all DEFERRED triggers and tidy up.
- * ----------
- */
-void
-DeferredTriggerEndXact(void)
-{
- /*
- * Ignore call if we aren't in a transaction.
- */
- if (deftrig_cxt == NULL)
- return;
-
- deferredTriggerInvokeEvents(false);
-
- MemoryContextDelete(deftrig_cxt);
- deftrig_cxt = NULL;
-}
-
-
-/* ----------
- * DeferredTriggerAbortXact()
- *
- * The current transaction has entered the abort state.
- * All outstanding triggers are canceled so we simply throw
- * away anything we know.
- * ----------
- */
-void
-DeferredTriggerAbortXact(void)
-{
- /*
- * Ignore call if we aren't in a transaction.
- */
- if (deftrig_cxt == NULL)
- return;
-
- MemoryContextDelete(deftrig_cxt);
- deftrig_cxt = NULL;
-}
-
-
-/* ----------
- * DeferredTriggerSetState()
- *
- * Called for the users SET CONSTRAINTS ... utility command.
- * ----------
- */
-void
-DeferredTriggerSetState(ConstraintsSetStmt *stmt)
-{
- Relation tgrel;
- List *l;
- List *ls;
- List *loid = NIL;
- MemoryContext oldcxt;
- bool found;
- DeferredTriggerStatus state;
-
- /*
- * Handle SET CONSTRAINTS ALL ...
- */
- if (stmt->constraints == NIL)
- {
- if (!IsTransactionBlock())
- {
- /*
- * ... outside of a transaction block
- *
- * Drop all information about individual trigger states per
- * session.
- */
- l = deftrig_dfl_trigstates;
- while (l != NIL)
- {
- List *next = lnext(l);
-
- pfree(lfirst(l));
- pfree(l);
- l = next;
- }
- deftrig_dfl_trigstates = NIL;
-
- /*
- * Set the session ALL state to known.
- */
- deftrig_dfl_all_isset = true;
- deftrig_dfl_all_isdeferred = stmt->deferred;
-
- return;
- }
- else
- {
- /*
- * ... inside of a transaction block
- *
- * Drop all information about individual trigger states per
- * transaction.
- */
- l = deftrig_trigstates;
- while (l != NIL)
- {
- List *next = lnext(l);
-
- pfree(lfirst(l));
- pfree(l);
- l = next;
- }
- deftrig_trigstates = NIL;
-
- /*
- * Set the per transaction ALL state to known.
- */
- deftrig_all_isset = true;
- deftrig_all_isdeferred = stmt->deferred;
-
- return;
- }
- }
-
- /* ----------
- * Handle SET CONSTRAINTS constraint-name [, ...]
- * First lookup all trigger Oid's for the constraint names.
- * ----------
- */
- tgrel = heap_openr(TriggerRelationName, AccessShareLock);
-
- foreach(l, stmt->constraints)
- {
- char *cname = strVal(lfirst(l));
- ScanKeyData skey;
- SysScanDesc tgscan;
- HeapTuple htup;
-
- /*
- * Check that only named constraints are set explicitly
- */
- if (strlen(cname) == 0)
- elog(ERROR, "unnamed constraints cannot be set explicitly");
-
- /*
- * Setup to scan pg_trigger by tgconstrname ...
- */
- ScanKeyEntryInitialize(&skey,
- (bits16) 0x0,
- (AttrNumber) Anum_pg_trigger_tgconstrname,
- (RegProcedure) F_NAMEEQ,
- PointerGetDatum(cname));
-
- tgscan = systable_beginscan(tgrel, TriggerConstrNameIndex, true,
- SnapshotNow, 1, &skey);
-
- /*
- * ... and search for the constraint trigger row
- */
- found = false;
-
- while (HeapTupleIsValid(htup = systable_getnext(tgscan)))
- {
- Form_pg_trigger pg_trigger = (Form_pg_trigger) GETSTRUCT(htup);
- Oid constr_oid;
-
- /*
- * If we found some, check that they fit the deferrability but
- * skip ON <event> RESTRICT ones, since they are silently
- * never deferrable.
- */
- if (stmt->deferred && !pg_trigger->tgdeferrable &&
- pg_trigger->tgfoid != F_RI_FKEY_RESTRICT_UPD &&
- pg_trigger->tgfoid != F_RI_FKEY_RESTRICT_DEL)
- elog(ERROR, "Constraint '%s' is not deferrable",
- cname);
-
- constr_oid = htup->t_data->t_oid;
- loid = lappendi(loid, constr_oid);
- found = true;
- }
-
- systable_endscan(tgscan);
-
- /*
- * Not found ?
- */
- if (!found)
- elog(ERROR, "Constraint '%s' does not exist", cname);
- }
- heap_close(tgrel, AccessShareLock);
-
- if (!IsTransactionBlock())
- {
- /*
- * Outside of a transaction block set the trigger states of
- * individual triggers on session level.
- */
- oldcxt = MemoryContextSwitchTo(deftrig_gcxt);
-
- foreach(l, loid)
- {
- found = false;
- foreach(ls, deftrig_dfl_trigstates)
- {
- state = (DeferredTriggerStatus) lfirst(ls);
- if (state->dts_tgoid == (Oid) lfirsti(l))
- {
- state->dts_tgisdeferred = stmt->deferred;
- found = true;
- break;
- }
- }
- if (!found)
- {
- state = (DeferredTriggerStatus)
- palloc(sizeof(DeferredTriggerStatusData));
- state->dts_tgoid = (Oid) lfirsti(l);
- state->dts_tgisdeferred = stmt->deferred;
-
- deftrig_dfl_trigstates =
- lappend(deftrig_dfl_trigstates, state);
- }
- }
-
- MemoryContextSwitchTo(oldcxt);
-
- return;
- }
- else
- {
- /*
- * Inside of a transaction block set the trigger states of
- * individual triggers on transaction level.
- */
- oldcxt = MemoryContextSwitchTo(deftrig_cxt);
-
- foreach(l, loid)
- {
- found = false;
- foreach(ls, deftrig_trigstates)
- {
- state = (DeferredTriggerStatus) lfirst(ls);
- if (state->dts_tgoid == (Oid) lfirsti(l))
- {
- state->dts_tgisdeferred = stmt->deferred;
- found = true;
- break;
- }
- }
- if (!found)
- {
- state = (DeferredTriggerStatus)
- palloc(sizeof(DeferredTriggerStatusData));
- state->dts_tgoid = (Oid) lfirsti(l);
- state->dts_tgisdeferred = stmt->deferred;
-
- deftrig_trigstates =
- lappend(deftrig_trigstates, state);
- }
- }
-
- MemoryContextSwitchTo(oldcxt);
-
- return;
- }
-}
-
-
-/* ----------
- * DeferredTriggerSaveEvent()
- *
- * Called by ExecAR...Triggers() to add the event to the queue.
- *
- * NOTE: should be called only if we've determined that an event must
- * be added to the queue.
- * ----------
- */
-static void
-DeferredTriggerSaveEvent(ResultRelInfo *relinfo, int event,
- HeapTuple oldtup, HeapTuple newtup)
-{
- Relation rel = relinfo->ri_RelationDesc;
- TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
- MemoryContext oldcxt;
- DeferredTriggerEvent new_event;
- int new_size;
- int i;
- int ntriggers;
- int *tgindx;
- ItemPointerData oldctid;
- ItemPointerData newctid;
- TriggerData LocTriggerData;
-
- if (deftrig_cxt == NULL)
- elog(ERROR,
- "DeferredTriggerSaveEvent() called outside of transaction");
-
- /*
- * Get the CTID's of OLD and NEW
- */
- if (oldtup != NULL)
- ItemPointerCopy(&(oldtup->t_self), &(oldctid));
- else
- ItemPointerSetInvalid(&(oldctid));
- if (newtup != NULL)
- ItemPointerCopy(&(newtup->t_self), &(newctid));
- else
- ItemPointerSetInvalid(&(newctid));
-
- /*
- * Create a new event
- */
- oldcxt = MemoryContextSwitchTo(deftrig_cxt);
-
- ntriggers = trigdesc->n_after_row[event];
- tgindx = trigdesc->tg_after_row[event];
- new_size = offsetof(DeferredTriggerEventData, dte_item[0]) +
- ntriggers * sizeof(DeferredTriggerEventItem);
-
- new_event = (DeferredTriggerEvent) palloc(new_size);
- new_event->dte_next = NULL;
- new_event->dte_event = event & TRIGGER_EVENT_OPMASK;
- new_event->dte_relid = rel->rd_id;
- ItemPointerCopy(&oldctid, &(new_event->dte_oldctid));
- ItemPointerCopy(&newctid, &(new_event->dte_newctid));
- new_event->dte_n_items = ntriggers;
- for (i = 0; i < ntriggers; i++)
- {
- Trigger *trigger = &trigdesc->triggers[tgindx[i]];
-
- new_event->dte_item[i].dti_tgoid = trigger->tgoid;
- new_event->dte_item[i].dti_state =
- ((trigger->tgdeferrable) ?
- TRIGGER_DEFERRED_DEFERRABLE : 0) |
- ((trigger->tginitdeferred) ?
- TRIGGER_DEFERRED_INITDEFERRED : 0) |
- ((trigdesc->n_before_row[event] > 0) ?
- TRIGGER_DEFERRED_HAS_BEFORE : 0);
- }
-
- MemoryContextSwitchTo(oldcxt);
-
- switch (event & TRIGGER_EVENT_OPMASK)
- {
- case TRIGGER_EVENT_INSERT:
- /* nothing to do */
- break;
-
- case TRIGGER_EVENT_UPDATE:
- /*
- * Check if one of the referenced keys is changed.
- */
- for (i = 0; i < ntriggers; i++)
- {
- Trigger *trigger = &trigdesc->triggers[tgindx[i]];
- bool is_ri_trigger;
- bool key_unchanged;
-
- /*
- * We are interested in RI_FKEY triggers only.
- */
- switch (trigger->tgfoid)
- {
- case F_RI_FKEY_NOACTION_UPD:
- case F_RI_FKEY_CASCADE_UPD:
- case F_RI_FKEY_RESTRICT_UPD:
- case F_RI_FKEY_SETNULL_UPD:
- case F_RI_FKEY_SETDEFAULT_UPD:
- is_ri_trigger = true;
- break;
-
- default:
- is_ri_trigger = false;
- break;
- }
- if (!is_ri_trigger)
- continue;
-
- LocTriggerData.type = T_TriggerData;
- LocTriggerData.tg_event = TRIGGER_EVENT_UPDATE;
- LocTriggerData.tg_relation = rel;
- LocTriggerData.tg_trigtuple = oldtup;
- LocTriggerData.tg_newtuple = newtup;
- LocTriggerData.tg_trigger = trigger;
-
- key_unchanged = RI_FKey_keyequal_upd(&LocTriggerData);
-
- if (key_unchanged)
- {
- /*
- * The key hasn't changed, so no need later to invoke
- * the trigger at all.
- */
- new_event->dte_item[i].dti_state |= TRIGGER_DEFERRED_DONE;
- }
- }
-
- break;
-
- case TRIGGER_EVENT_DELETE:
- /* nothing to do */
- break;
- }
-
- /*
- * Add the new event to the queue.
- */
- deferredTriggerAddEvent(new_event);
-}