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Diffstat (limited to 'contrib/btree_gist/btree_text.c')
-rw-r--r--contrib/btree_gist/btree_text.c271
1 files changed, 271 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_text.c b/contrib/btree_gist/btree_text.c
new file mode 100644
index 00000000000..0ce847369e2
--- /dev/null
+++ b/contrib/btree_gist/btree_text.c
@@ -0,0 +1,271 @@
+#include "btree_gist.h"
+#include "btree_utils_var.h"
+#include "utils/builtins.h"
+
+/*
+** Text ops
+*/
+PG_FUNCTION_INFO_V1(gbt_text_compress);
+PG_FUNCTION_INFO_V1(gbt_bpchar_compress);
+PG_FUNCTION_INFO_V1(gbt_text_union);
+PG_FUNCTION_INFO_V1(gbt_text_picksplit);
+PG_FUNCTION_INFO_V1(gbt_text_consistent);
+PG_FUNCTION_INFO_V1(gbt_bpchar_consistent);
+PG_FUNCTION_INFO_V1(gbt_text_penalty);
+PG_FUNCTION_INFO_V1(gbt_text_same);
+
+Datum gbt_text_compress(PG_FUNCTION_ARGS);
+Datum gbt_bpchar_compress(PG_FUNCTION_ARGS);
+Datum gbt_text_union(PG_FUNCTION_ARGS);
+Datum gbt_text_picksplit(PG_FUNCTION_ARGS);
+Datum gbt_text_consistent(PG_FUNCTION_ARGS);
+Datum gbt_bpchar_consistent(PG_FUNCTION_ARGS);
+Datum gbt_text_penalty(PG_FUNCTION_ARGS);
+Datum gbt_text_same(PG_FUNCTION_ARGS);
+
+
+/* define for comparison */
+
+static bool gbt_textgt (const void *a, const void *b)
+{
+ return ( DatumGetBool(DirectFunctionCall2( text_gt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
+}
+
+static bool gbt_textge (const void *a, const void *b)
+{
+ return ( DatumGetBool(DirectFunctionCall2( text_ge ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
+}
+
+static bool gbt_texteq (const void *a, const void *b)
+{
+ return ( DatumGetBool(DirectFunctionCall2( texteq ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
+}
+
+static bool gbt_textle (const void *a, const void *b)
+{
+ return ( DatumGetBool(DirectFunctionCall2( text_le ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
+}
+
+static bool gbt_textlt (const void *a, const void *b)
+{
+ return ( DatumGetBool(DirectFunctionCall2( text_lt ,PointerGetDatum( a ),PointerGetDatum( b ) ) ) );
+}
+
+static int32 gbt_textcmp ( const bytea * a , const bytea * b )
+{
+ return strcmp( VARDATA(a), VARDATA(b) );
+}
+
+
+/*
+ * Converts data of leaf using strxfrm ( locale support )
+*/
+
+static bytea *
+gbt_text_xfrm ( bytea * leaf )
+{
+ bytea * out = leaf;
+
+ int32 ilen = VARSIZE (leaf) - VARHDRSZ;
+ int32 olen ;
+ char sin[ilen+1];
+ char * sou = NULL;
+ memcpy ( (void*)&sin[0], (void*) VARDATA(leaf) ,ilen );
+ sin[ilen] = '\0';
+ olen = strxfrm ( NULL, &sin[0], 0 ) + 1;
+ sou = palloc ( olen );
+ olen = strxfrm ( sou , &sin[0] , olen );
+ olen += VARHDRSZ;
+ out = palloc ( olen + 1 );
+ out->vl_len = olen+1;
+ memcpy( (void*) VARDATA(out), sou, olen-VARHDRSZ );
+ ((char*)out)[olen] = '\0';
+ pfree(sou);
+
+ return out;
+}
+
+
+static GBT_VARKEY * gbt_text_l2n ( GBT_VARKEY * leaf )
+{
+
+ GBT_VARKEY *out = leaf ;
+ GBT_VARKEY_R r = gbt_var_key_readable ( leaf );
+ bytea * o ;
+
+ o = gbt_text_xfrm ( r.lower );
+ r.lower = r.upper = o;
+ out = gbt_var_key_copy ( &r , TRUE );
+ pfree(o);
+
+ return out;
+
+}
+
+
+
+
+
+static const gbtree_vinfo tinfo =
+{
+ gbt_t_text,
+ TRUE,
+ TRUE,
+ gbt_textgt,
+ gbt_textge,
+ gbt_texteq,
+ gbt_textle,
+ gbt_textlt,
+ gbt_textcmp,
+ gbt_text_l2n
+};
+
+
+
+/**************************************************
+ * Text ops
+ **************************************************/
+
+
+Datum
+gbt_text_compress (PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ PG_RETURN_POINTER ( gbt_var_compress( entry, &tinfo ) );
+}
+
+Datum
+gbt_bpchar_compress (PG_FUNCTION_ARGS)
+{
+
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ GISTENTRY * retval ;
+
+ if (entry->leafkey)
+ {
+
+ Datum d = DirectFunctionCall1 ( rtrim1, entry->key );
+ GISTENTRY * trim = palloc(sizeof(GISTENTRY));
+
+ gistentryinit(*trim, d ,
+ entry->rel, entry->page,
+ entry->offset, VARSIZE(DatumGetPointer(d)), TRUE);
+ retval = gbt_var_compress( trim , &tinfo ) ;
+
+ pfree ( trim );
+ pfree ( DatumGetPointer(d) );
+ } else
+ retval = entry;
+
+ PG_RETURN_POINTER ( retval );
+}
+
+
+
+Datum
+gbt_text_consistent(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ GBT_VARKEY *ktst = (GBT_VARKEY *) DatumGetPointer ( entry->key ) ;
+ GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer ( PG_DETOAST_DATUM( entry->key ) );
+ void *qtst = ( void * ) DatumGetPointer( PG_GETARG_DATUM(1) );
+ void *query = ( void * ) DatumGetTextP ( PG_GETARG_DATUM(1) );
+ StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
+ bool retval = FALSE;
+ GBT_VARKEY_R r = gbt_var_key_readable ( key );
+
+ if ( GIST_LEAF(entry) )
+ {
+ retval = gbt_var_consistent( &r, query, &strategy, TRUE, &tinfo );
+ } else {
+ bytea * q = gbt_text_xfrm ( ( bytea * ) query );
+ retval = gbt_var_consistent( &r, (void*)q, &strategy, FALSE, &tinfo );
+ if ( q != query )
+ pfree(q);
+ }
+
+ if ( ktst != key ){
+ pfree ( key );
+ }
+ if ( qtst != query ){
+ pfree ( query );
+ }
+
+ PG_RETURN_BOOL(retval);
+}
+
+
+Datum
+gbt_bpchar_consistent(PG_FUNCTION_ARGS)
+{
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ GBT_VARKEY *ktst = (GBT_VARKEY *) DatumGetPointer ( entry->key ) ;
+ GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer ( PG_DETOAST_DATUM( entry->key ) );
+ void *qtst = ( void * ) DatumGetPointer ( PG_GETARG_DATUM(1) );
+ void *query = ( void * ) DatumGetPointer (PG_DETOAST_DATUM( PG_GETARG_DATUM(1) ) );
+ void *trim = ( void * ) DatumGetPointer ( DirectFunctionCall1 ( rtrim1, PointerGetDatum ( query ) ) ) ;
+ StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
+ bool retval = FALSE;
+ GBT_VARKEY_R r = gbt_var_key_readable ( key );
+
+ if ( GIST_LEAF(entry) )
+ {
+ retval = gbt_var_consistent( &r, trim , &strategy, TRUE, &tinfo );
+ } else {
+ bytea * q = gbt_text_xfrm ( ( bytea * ) trim );
+ retval = gbt_var_consistent( &r, (void*)q, &strategy, FALSE, &tinfo );
+ if ( q != trim )
+ pfree(q);
+ }
+
+ pfree(trim);
+
+ if ( ktst != key ){
+ pfree ( key );
+ }
+ if ( qtst != query ){
+ pfree ( query );
+ }
+ PG_RETURN_BOOL(retval);
+}
+
+
+
+
+Datum
+gbt_text_union(PG_FUNCTION_ARGS)
+{
+ GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
+ int32 *size = (int *) PG_GETARG_POINTER(1);
+ PG_RETURN_POINTER( gbt_var_union ( entryvec , size , &tinfo ) );
+}
+
+
+Datum
+gbt_text_picksplit(PG_FUNCTION_ARGS)
+{
+ GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
+ GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
+ gbt_var_picksplit ( entryvec, v, &tinfo );
+ PG_RETURN_POINTER(v);
+}
+
+Datum
+gbt_text_same(PG_FUNCTION_ARGS)
+{
+ Datum d1 = PG_GETARG_DATUM(0);
+ Datum d2 = PG_GETARG_DATUM(1);
+ bool *result = (bool *) PG_GETARG_POINTER(2);
+ PG_RETURN_POINTER( gbt_var_same ( result, d1 , d2 , &tinfo ));
+}
+
+
+Datum
+gbt_text_penalty(PG_FUNCTION_ARGS)
+{
+ float *result = (float *) PG_GETARG_POINTER(2);
+ GISTENTRY * o = (GISTENTRY *) PG_GETARG_POINTER(0);
+ GISTENTRY * n = (GISTENTRY *) PG_GETARG_POINTER(1);
+ PG_RETURN_POINTER( gbt_var_penalty ( result ,o , n, &tinfo ) );
+}
+
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-09 08:51:33 +0000