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286 lines
6.1 KiB
C
286 lines
6.1 KiB
C
#include "btree_gist.h"
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#include "btree_utils_var.h"
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#include "utils/builtins.h"
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/*
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** Text ops
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*/
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PG_FUNCTION_INFO_V1(gbt_text_compress);
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PG_FUNCTION_INFO_V1(gbt_bpchar_compress);
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PG_FUNCTION_INFO_V1(gbt_text_union);
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PG_FUNCTION_INFO_V1(gbt_text_picksplit);
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PG_FUNCTION_INFO_V1(gbt_text_consistent);
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PG_FUNCTION_INFO_V1(gbt_bpchar_consistent);
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PG_FUNCTION_INFO_V1(gbt_text_penalty);
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PG_FUNCTION_INFO_V1(gbt_text_same);
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Datum gbt_text_compress(PG_FUNCTION_ARGS);
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Datum gbt_bpchar_compress(PG_FUNCTION_ARGS);
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Datum gbt_text_union(PG_FUNCTION_ARGS);
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Datum gbt_text_picksplit(PG_FUNCTION_ARGS);
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Datum gbt_text_consistent(PG_FUNCTION_ARGS);
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Datum gbt_bpchar_consistent(PG_FUNCTION_ARGS);
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Datum gbt_text_penalty(PG_FUNCTION_ARGS);
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Datum gbt_text_same(PG_FUNCTION_ARGS);
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/* define for comparison */
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static bool
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gbt_textgt(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(text_gt, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_textge(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(text_ge, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_texteq(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(texteq, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_textle(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(text_le, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static bool
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gbt_textlt(const void *a, const void *b)
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{
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return (DatumGetBool(DirectFunctionCall2(text_lt, PointerGetDatum(a), PointerGetDatum(b))));
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}
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static int32
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gbt_textcmp(const bytea *a, const bytea *b)
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{
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return strcmp(VARDATA(a), VARDATA(b));
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}
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/*
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* Converts data of leaf using strxfrm ( locale support )
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*/
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static bytea *
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gbt_text_xfrm(bytea *leaf)
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{
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bytea *out = leaf;
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int32 ilen = VARSIZE(leaf) - VARHDRSZ;
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int32 olen;
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char *sin;
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char *sou;
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sin = palloc(ilen + 1);
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memcpy(sin, (void *) VARDATA(leaf), ilen);
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sin[ilen] = '\0';
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olen = strxfrm(NULL, &sin[0], 0) + 1;
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sou = palloc(olen);
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olen = strxfrm(sou, &sin[0], olen);
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olen += VARHDRSZ;
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out = palloc(olen + 1);
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out->vl_len = olen + 1;
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memcpy((void *) VARDATA(out), sou, olen - VARHDRSZ);
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((char *) out)[olen] = '\0';
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pfree(sou);
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pfree(sin);
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return out;
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}
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static GBT_VARKEY *
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gbt_text_l2n(GBT_VARKEY * leaf)
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{
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GBT_VARKEY *out = leaf;
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GBT_VARKEY_R r = gbt_var_key_readable(leaf);
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bytea *o;
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o = gbt_text_xfrm(r.lower);
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r.lower = r.upper = o;
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out = gbt_var_key_copy(&r, TRUE);
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pfree(o);
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return out;
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}
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static const gbtree_vinfo tinfo =
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{
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gbt_t_text,
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TRUE,
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TRUE,
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gbt_textgt,
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gbt_textge,
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gbt_texteq,
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gbt_textle,
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gbt_textlt,
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gbt_textcmp,
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gbt_text_l2n
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};
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/**************************************************
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* Text ops
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**************************************************/
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Datum
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gbt_text_compress(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
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}
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Datum
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gbt_bpchar_compress(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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GISTENTRY *retval;
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if (entry->leafkey)
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{
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Datum d = DirectFunctionCall1(rtrim1, entry->key);
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GISTENTRY *trim = palloc(sizeof(GISTENTRY));
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gistentryinit(*trim, d,
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entry->rel, entry->page,
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entry->offset, VARSIZE(DatumGetPointer(d)), TRUE);
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retval = gbt_var_compress(trim, &tinfo);
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pfree(trim);
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pfree(DatumGetPointer(d));
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}
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else
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retval = entry;
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PG_RETURN_POINTER(retval);
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}
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Datum
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gbt_text_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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GBT_VARKEY *ktst = (GBT_VARKEY *) DatumGetPointer(entry->key);
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GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(PG_DETOAST_DATUM(entry->key));
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void *qtst = (void *) DatumGetPointer(PG_GETARG_DATUM(1));
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void *query = (void *) DatumGetTextP(PG_GETARG_DATUM(1));
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StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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bool retval = FALSE;
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GBT_VARKEY_R r = gbt_var_key_readable(key);
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if (GIST_LEAF(entry))
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retval = gbt_var_consistent(&r, query, &strategy, TRUE, &tinfo);
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else
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{
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bytea *q = gbt_text_xfrm((bytea *) query);
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retval = gbt_var_consistent(&r, (void *) q, &strategy, FALSE, &tinfo);
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if (q != query)
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pfree(q);
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}
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if (ktst != key)
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pfree(key);
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if (qtst != query)
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pfree(query);
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PG_RETURN_BOOL(retval);
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}
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Datum
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gbt_bpchar_consistent(PG_FUNCTION_ARGS)
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{
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GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
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GBT_VARKEY *ktst = (GBT_VARKEY *) DatumGetPointer(entry->key);
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GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(PG_DETOAST_DATUM(entry->key));
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void *qtst = (void *) DatumGetPointer(PG_GETARG_DATUM(1));
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void *query = (void *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(1)));
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void *trim = (void *) DatumGetPointer(DirectFunctionCall1(rtrim1, PointerGetDatum(query)));
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StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
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bool retval = FALSE;
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GBT_VARKEY_R r = gbt_var_key_readable(key);
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if (GIST_LEAF(entry))
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retval = gbt_var_consistent(&r, trim, &strategy, TRUE, &tinfo);
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else
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{
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bytea *q = gbt_text_xfrm((bytea *) trim);
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retval = gbt_var_consistent(&r, (void *) q, &strategy, FALSE, &tinfo);
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if (q != trim)
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pfree(q);
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}
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pfree(trim);
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if (ktst != key)
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pfree(key);
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if (qtst != query)
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pfree(query);
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PG_RETURN_BOOL(retval);
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}
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Datum
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gbt_text_union(PG_FUNCTION_ARGS)
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{
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GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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int32 *size = (int *) PG_GETARG_POINTER(1);
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PG_RETURN_POINTER(gbt_var_union(entryvec, size, &tinfo));
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}
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Datum
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gbt_text_picksplit(PG_FUNCTION_ARGS)
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{
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GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
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GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
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gbt_var_picksplit(entryvec, v, &tinfo);
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PG_RETURN_POINTER(v);
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}
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Datum
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gbt_text_same(PG_FUNCTION_ARGS)
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{
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Datum d1 = PG_GETARG_DATUM(0);
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Datum d2 = PG_GETARG_DATUM(1);
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bool *result = (bool *) PG_GETARG_POINTER(2);
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PG_RETURN_POINTER(gbt_var_same(result, d1, d2, &tinfo));
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}
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Datum
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gbt_text_penalty(PG_FUNCTION_ARGS)
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{
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float *result = (float *) PG_GETARG_POINTER(2);
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GISTENTRY *o = (GISTENTRY *) PG_GETARG_POINTER(0);
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GISTENTRY *n = (GISTENTRY *) PG_GETARG_POINTER(1);
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PG_RETURN_POINTER(gbt_var_penalty(result, o, n, &tinfo));
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}
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