forked from huawei/openGauss-server
277 lines
7.5 KiB
C++
277 lines
7.5 KiB
C++
/*
|
|
* contrib/ltree/_ltree_op.c
|
|
*
|
|
*
|
|
* op function for ltree[]
|
|
* Teodor Sigaev <teodor@stack.net>
|
|
*/
|
|
#include "postgres.h"
|
|
#include "knl/knl_variable.h"
|
|
|
|
#include <ctype.h>
|
|
|
|
#include "ltree.h"
|
|
|
|
PG_FUNCTION_INFO_V1(_ltree_isparent);
|
|
PG_FUNCTION_INFO_V1(_ltree_r_isparent);
|
|
PG_FUNCTION_INFO_V1(_ltree_risparent);
|
|
PG_FUNCTION_INFO_V1(_ltree_r_risparent);
|
|
PG_FUNCTION_INFO_V1(_ltq_regex);
|
|
PG_FUNCTION_INFO_V1(_ltq_rregex);
|
|
PG_FUNCTION_INFO_V1(_lt_q_regex);
|
|
PG_FUNCTION_INFO_V1(_lt_q_rregex);
|
|
PG_FUNCTION_INFO_V1(_ltxtq_exec);
|
|
PG_FUNCTION_INFO_V1(_ltxtq_rexec);
|
|
|
|
extern "C" Datum _ltree_r_isparent(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltree_r_risparent(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltxtq_exec(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltxtq_rexec(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(_ltree_extract_isparent);
|
|
PG_FUNCTION_INFO_V1(_ltree_extract_risparent);
|
|
PG_FUNCTION_INFO_V1(_ltq_extract_regex);
|
|
PG_FUNCTION_INFO_V1(_ltxtq_extract_exec);
|
|
extern "C" Datum _ltree_extract_isparent(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltree_extract_risparent(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltq_extract_regex(PG_FUNCTION_ARGS);
|
|
extern "C" Datum _ltxtq_extract_exec(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(_lca);
|
|
extern "C" Datum _lca(PG_FUNCTION_ARGS);
|
|
|
|
typedef Datum (*PGCALL2)(PG_FUNCTION_ARGS);
|
|
|
|
#define NEXTVAL(x) ((ltree*)((char*)(x) + INTALIGN(VARSIZE(x))))
|
|
|
|
static bool array_iterator(ArrayType* la, PGCALL2 callback, void* param, ltree** found)
|
|
{
|
|
int num = ArrayGetNItems(ARR_NDIM(la), ARR_DIMS(la));
|
|
ltree* item = (ltree*)ARR_DATA_PTR(la);
|
|
|
|
if (ARR_NDIM(la) > 1)
|
|
ereport(ERROR, (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR), errmsg("array must be one-dimensional")));
|
|
if (array_contains_nulls(la))
|
|
ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("array must not contain nulls")));
|
|
|
|
if (found)
|
|
*found = NULL;
|
|
while (num > 0) {
|
|
if (DatumGetBool(DirectFunctionCall2(callback, PointerGetDatum(item), PointerGetDatum(param)))) {
|
|
|
|
if (found)
|
|
*found = item;
|
|
return true;
|
|
}
|
|
num--;
|
|
item = NEXTVAL(item);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
Datum _ltree_isparent(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltree* query = PG_GETARG_LTREE(1);
|
|
bool res = array_iterator(la, ltree_isparent, (void*)query, NULL);
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_BOOL(res);
|
|
}
|
|
|
|
Datum _ltree_r_isparent(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(DirectFunctionCall2(_ltree_isparent, PG_GETARG_DATUM(1), PG_GETARG_DATUM(0)));
|
|
}
|
|
|
|
Datum _ltree_risparent(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltree* query = PG_GETARG_LTREE(1);
|
|
bool res = array_iterator(la, ltree_risparent, (void*)query, NULL);
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_BOOL(res);
|
|
}
|
|
|
|
Datum _ltree_r_risparent(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(DirectFunctionCall2(_ltree_risparent, PG_GETARG_DATUM(1), PG_GETARG_DATUM(0)));
|
|
}
|
|
|
|
Datum _ltq_regex(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
lquery* query = PG_GETARG_LQUERY(1);
|
|
bool res = array_iterator(la, ltq_regex, (void*)query, NULL);
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_BOOL(res);
|
|
}
|
|
|
|
Datum _ltq_rregex(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(DirectFunctionCall2(_ltq_regex, PG_GETARG_DATUM(1), PG_GETARG_DATUM(0)));
|
|
}
|
|
|
|
Datum _lt_q_regex(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* _tree = PG_GETARG_ARRAYTYPE_P(0);
|
|
ArrayType* _query = PG_GETARG_ARRAYTYPE_P(1);
|
|
lquery* query = (lquery*)ARR_DATA_PTR(_query);
|
|
bool res = false;
|
|
int num = ArrayGetNItems(ARR_NDIM(_query), ARR_DIMS(_query));
|
|
|
|
if (ARR_NDIM(_query) > 1)
|
|
ereport(ERROR, (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR), errmsg("array must be one-dimensional")));
|
|
if (array_contains_nulls(_query))
|
|
ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("array must not contain nulls")));
|
|
|
|
while (num > 0) {
|
|
if (array_iterator(_tree, ltq_regex, (void*)query, NULL)) {
|
|
res = true;
|
|
break;
|
|
}
|
|
num--;
|
|
query = (lquery*)NEXTVAL(query);
|
|
}
|
|
|
|
PG_FREE_IF_COPY(_tree, 0);
|
|
PG_FREE_IF_COPY(_query, 1);
|
|
PG_RETURN_BOOL(res);
|
|
}
|
|
|
|
Datum _lt_q_rregex(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(DirectFunctionCall2(_lt_q_regex, PG_GETARG_DATUM(1), PG_GETARG_DATUM(0)));
|
|
}
|
|
|
|
Datum _ltxtq_exec(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltxtquery* query = PG_GETARG_LTXTQUERY(1);
|
|
bool res = array_iterator(la, ltxtq_exec, (void*)query, NULL);
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_BOOL(res);
|
|
}
|
|
|
|
Datum _ltxtq_rexec(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(DirectFunctionCall2(_ltxtq_exec, PG_GETARG_DATUM(1), PG_GETARG_DATUM(0)));
|
|
}
|
|
|
|
Datum _ltree_extract_isparent(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltree* query = PG_GETARG_LTREE(1);
|
|
ltree *found, *item;
|
|
|
|
if (!array_iterator(la, ltree_isparent, (void*)query, &found)) {
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_NULL();
|
|
}
|
|
|
|
item = (ltree*)palloc(VARSIZE(found));
|
|
memcpy(item, found, VARSIZE(found));
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_POINTER(item);
|
|
}
|
|
|
|
Datum _ltree_extract_risparent(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltree* query = PG_GETARG_LTREE(1);
|
|
ltree *found, *item;
|
|
|
|
if (!array_iterator(la, ltree_risparent, (void*)query, &found)) {
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_NULL();
|
|
}
|
|
|
|
item = (ltree*)palloc(VARSIZE(found));
|
|
memcpy(item, found, VARSIZE(found));
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_POINTER(item);
|
|
}
|
|
|
|
Datum _ltq_extract_regex(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
lquery* query = PG_GETARG_LQUERY(1);
|
|
ltree *found, *item;
|
|
|
|
if (!array_iterator(la, ltq_regex, (void*)query, &found)) {
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_NULL();
|
|
}
|
|
|
|
item = (ltree*)palloc(VARSIZE(found));
|
|
memcpy(item, found, VARSIZE(found));
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_POINTER(item);
|
|
}
|
|
|
|
Datum _ltxtq_extract_exec(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
ltxtquery* query = PG_GETARG_LTXTQUERY(1);
|
|
ltree *found, *item;
|
|
|
|
if (!array_iterator(la, ltxtq_exec, (void*)query, &found)) {
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_NULL();
|
|
}
|
|
|
|
item = (ltree*)palloc(VARSIZE(found));
|
|
memcpy(item, found, VARSIZE(found));
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
PG_FREE_IF_COPY(query, 1);
|
|
PG_RETURN_POINTER(item);
|
|
}
|
|
|
|
Datum _lca(PG_FUNCTION_ARGS)
|
|
{
|
|
ArrayType* la = PG_GETARG_ARRAYTYPE_P(0);
|
|
int num = ArrayGetNItems(ARR_NDIM(la), ARR_DIMS(la));
|
|
ltree* item = (ltree*)ARR_DATA_PTR(la);
|
|
ltree **a, *res;
|
|
|
|
if (ARR_NDIM(la) > 1)
|
|
ereport(ERROR, (errcode(ERRCODE_ARRAY_SUBSCRIPT_ERROR), errmsg("array must be one-dimensional")));
|
|
if (array_contains_nulls(la))
|
|
ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("array must not contain nulls")));
|
|
|
|
a = (ltree**)palloc(sizeof(ltree*) * num);
|
|
while (num > 0) {
|
|
num--;
|
|
a[num] = item;
|
|
item = NEXTVAL(item);
|
|
}
|
|
res = lca_inner(a, ArrayGetNItems(ARR_NDIM(la), ARR_DIMS(la)));
|
|
pfree(a);
|
|
|
|
PG_FREE_IF_COPY(la, 0);
|
|
|
|
if (res)
|
|
PG_RETURN_POINTER(res);
|
|
else
|
|
PG_RETURN_NULL();
|
|
}
|