本文整理汇总了C++中GETOPERAND函数的典型用法代码示例。如果您正苦于以下问题：C++ GETOPERAND函数的具体用法？C++ GETOPERAND怎么用？C++ GETOPERAND使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了GETOPERAND函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: CompareTSQ
static int
CompareTSQ(TSQuery a, TSQuery b)
{
if (a->size != b->size)
{
return (a->size < b->size) ? -1 : 1;
}
else if (VARSIZE(a) != VARSIZE(b))
{
return (VARSIZE(a) < VARSIZE(b)) ? -1 : 1;
}
else if (a->size != 0)
{
QTNode *an = QT2QTN(GETQUERY(a), GETOPERAND(a));
QTNode *bn = QT2QTN(GETQUERY(b), GETOPERAND(b));
int res = QTNodeCompare(an, bn);
QTNFree(an);
QTNFree(bn);
return res;
}
return 0;
}
开发者ID:winlibs，项目名称:postgresql，代码行数:25，代码来源:tsquery_op.c
示例2: cleanup_tsquery_stopwords
/*
* Remove QI_VALSTOP (stopword) nodes from TSQuery.
*/
TSQuery
cleanup_tsquery_stopwords(TSQuery in)
{
int32 len,
lenstr,
commonlen,
i;
NODE *root;
int ladd,
radd;
TSQuery out;
QueryItem *items;
char *operands;
if (in->size == 0)
return in;
/* eliminate stop words */
root = clean_stopword_intree(maketree(GETQUERY(in)), &ladd, &radd);
if (root == NULL)
{
ereport(NOTICE,
(errmsg("text-search query contains only stop words or doesn't contain lexemes, ignored")));
out = palloc(HDRSIZETQ);
out->size = 0;
SET_VARSIZE(out, HDRSIZETQ);
return out;
}
/*
* Build TSQuery from plain view
*/
lenstr = calcstrlen(root);
items = plaintree(root, &len);
commonlen = COMPUTESIZE(len, lenstr);
out = palloc(commonlen);
SET_VARSIZE(out, commonlen);
out->size = len;
memcpy(GETQUERY(out), items, len * sizeof(QueryItem));
items = GETQUERY(out);
operands = GETOPERAND(out);
for (i = 0; i < out->size; i++)
{
QueryOperand *op = (QueryOperand *) &items[i];
if (op->type != QI_VAL)
continue;
memcpy(operands, GETOPERAND(in) + op->distance, op->length);
operands[op->length] = '\0';
op->distance = operands - GETOPERAND(out);
operands += op->length + 1;
}
return out;
}
开发者ID:winlibs，项目名称:postgresql，代码行数:63，代码来源:tsquery_cleanup.c
示例3: tsquery_rewrite
Datum
tsquery_rewrite(PG_FUNCTION_ARGS)
{
TSQuery query = PG_GETARG_TSQUERY_COPY(0);
TSQuery ex = PG_GETARG_TSQUERY(1);
TSQuery subst = PG_GETARG_TSQUERY(2);
TSQuery rewrited = query;
QTNode *tree,
*qex,
*subs = NULL;
if (query->size == 0 || ex->size == 0)
{
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
tree = QT2QTN(GETQUERY(query), GETOPERAND(query));
QTNTernary(tree);
QTNSort(tree);
qex = QT2QTN(GETQUERY(ex), GETOPERAND(ex));
QTNTernary(qex);
QTNSort(qex);
if (subst->size)
subs = QT2QTN(GETQUERY(subst), GETOPERAND(subst));
tree = findsubquery(tree, qex, subs, NULL);
QTNFree(qex);
QTNFree(subs);
if (!tree)
{
SET_VARSIZE(rewrited, HDRSIZETQ);
rewrited->size = 0;
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
else
{
QTNBinary(tree);
rewrited = QTN2QT(tree);
QTNFree(tree);
}
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
开发者ID:0x0FFF，项目名称:postgres，代码行数:54，代码来源:tsquery_rewrite.c
示例4: tsquery_rewrite_query
Datum
tsquery_rewrite_query(PG_FUNCTION_ARGS)
{
QUERYTYPE *query = (QUERYTYPE *) DatumGetPointer(PG_DETOAST_DATUM_COPY(PG_GETARG_DATUM(0)));
QUERYTYPE *ex = (QUERYTYPE *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(1)));
QUERYTYPE *subst = (QUERYTYPE *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(2)));
QUERYTYPE *rewrited = query;
QTNode *tree,
*qex,
*subs = NULL;
if (query->size == 0 || ex->size == 0)
{
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
tree = QT2QTN(GETQUERY(query), GETOPERAND(query));
QTNTernary(tree);
QTNSort(tree);
qex = QT2QTN(GETQUERY(ex), GETOPERAND(ex));
QTNTernary(qex);
QTNSort(qex);
if (subst->size)
subs = QT2QTN(GETQUERY(subst), GETOPERAND(subst));
tree = findsubquery(tree, qex, PlainMemory, subs, NULL);
QTNFree(qex);
QTNFree(subs);
if (!tree)
{
rewrited->len = HDRSIZEQT;
rewrited->size = 0;
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
else
{
QTNBinary(tree);
rewrited = QTN2QT(tree, PlainMemory);
QTNFree(tree);
}
PG_FREE_IF_COPY(query, 0);
PG_FREE_IF_COPY(ex, 1);
PG_FREE_IF_COPY(subst, 2);
PG_RETURN_POINTER(rewrited);
}
开发者ID:berkeley-cs186，项目名称:course-fa07，代码行数:53，代码来源:query_rewrite.c
示例5: ts_match_vq
Datum
ts_match_vq(PG_FUNCTION_ARGS)
{
TSVector val = PG_GETARG_TSVECTOR(0);
TSQuery query = PG_GETARG_TSQUERY(1);
CHKVAL chkval;
bool result;
if (!val->size || !query->size)
{
PG_FREE_IF_COPY(val, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(false);
}
chkval.arrb = ARRPTR(val);
chkval.arre = chkval.arrb + val->size;
chkval.values = STRPTR(val);
chkval.operand = GETOPERAND(query);
result = TS_execute(
GETQUERY(query),
&chkval,
true,
checkcondition_str
);
PG_FREE_IF_COPY(val, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(result);
}
开发者ID:bocap，项目名称:postgres，代码行数:30，代码来源:tsvector_op.c
示例6: hlfinditem
static void
hlfinditem(HeadlineParsedText *prs, TSQuery query, char *buf, int buflen)
{
int i;
QueryItem *item = GETQUERY(query);
HeadlineWordEntry *word;
while (prs->curwords + query->size >= prs->lenwords)
{
prs->lenwords *= 2;
prs->words = (HeadlineWordEntry *) repalloc((void *) prs->words, prs->lenwords * sizeof(HeadlineWordEntry));
}
word = &(prs->words[prs->curwords - 1]);
for (i = 0; i < query->size; i++)
{
if (item->type == QI_VAL &&
tsCompareString(GETOPERAND(query) + item->qoperand.distance, item->qoperand.length,
buf, buflen, item->qoperand.prefix) == 0)
{
if (word->item)
{
memcpy(&(prs->words[prs->curwords]), word, sizeof(HeadlineWordEntry));
prs->words[prs->curwords].item = &item->qoperand;
prs->words[prs->curwords].repeated = 1;
prs->curwords++;
}
else
word->item = &item->qoperand;
}
item++;
}
}
开发者ID:adunstan，项目名称:pg-cvs-mirror，代码行数:33，代码来源:ts_parse.c
示例7: QTN2QT
TSQuery
QTN2QT(QTNode *in)
{
TSQuery out;
int len;
int sumlen = 0,
nnode = 0;
QTN2QTState state;
cntsize(in, &sumlen, &nnode);
if (TSQUERY_TOO_BIG(nnode, sumlen))
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("tsquery is too large")));
len = COMPUTESIZE(nnode, sumlen);
out = (TSQuery) palloc0(len);
SET_VARSIZE(out, len);
out->size = nnode;
state.curitem = GETQUERY(out);
state.operand = state.curoperand = GETOPERAND(out);
fillQT(&state, in);
return out;
}
开发者ID:5A68656E67，项目名称:postgres，代码行数:27，代码来源:tsquery_util.c
示例8: tsquery_not
Datum
tsquery_not(PG_FUNCTION_ARGS)
{
TSQuery a = PG_GETARG_TSQUERY_COPY(0);
QTNode *res;
TSQuery query;
if (a->size == 0)
PG_RETURN_POINTER(a);
res = (QTNode *) palloc0(sizeof(QTNode));
res->flags |= QTN_NEEDFREE;
res->valnode = (QueryItem *) palloc0(sizeof(QueryItem));
res->valnode->type = QI_OPR;
res->valnode->qoperator.oper = OP_NOT;
res->child = (QTNode **) palloc0(sizeof(QTNode *));
res->child[0] = QT2QTN(GETQUERY(a), GETOPERAND(a));
res->nchild = 1;
query = QTN2QT(res);
QTNFree(res);
PG_FREE_IF_COPY(a, 0);
PG_RETURN_POINTER(query);
}
开发者ID:winlibs，项目名称:postgresql，代码行数:29，代码来源:tsquery_op.c
示例9: exectsq
Datum
exectsq(PG_FUNCTION_ARGS)
{
tsvector *val = (tsvector *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(0)));
QUERYTYPE *query = (QUERYTYPE *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(1)));
CHKVAL chkval;
bool result;
SET_FUNCOID();
if (!val->size || !query->size)
{
PG_FREE_IF_COPY(val, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(false);
}
chkval.arrb = ARRPTR(val);
chkval.arre = chkval.arrb + val->size;
chkval.values = STRPTR(val);
chkval.operand = GETOPERAND(query);
result = TS_execute(
GETQUERY(query),
&chkval,
true,
checkcondition_str
);
PG_FREE_IF_COPY(val, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(result);
}
开发者ID:berkeley-cs186，项目名称:course-fa07，代码行数:31，代码来源:query.c
示例10: hlfinditem
static void
hlfinditem(HLPRSTEXT * prs, QUERYTYPE * query, char *buf, int buflen)
{
int i;
ITEM *item = GETQUERY(query);
HLWORD *word;
while (prs->curwords + query->size >= prs->lenwords)
{
prs->lenwords *= 2;
prs->words = (HLWORD *) repalloc((void *) prs->words, prs->lenwords * sizeof(HLWORD));
}
word = &(prs->words[prs->curwords - 1]);
for (i = 0; i < query->size; i++)
{
if (item->type == VAL && item->length == buflen && strncmp(GETOPERAND(query) + item->distance, buf, buflen) == 0)
{
if (word->item)
{
memcpy(&(prs->words[prs->curwords]), word, sizeof(HLWORD));
prs->words[prs->curwords].item = item;
prs->words[prs->curwords].repeated = 1;
prs->curwords++;
}
else
word->item = item;
}
item++;
}
}
开发者ID:merlintang，项目名称:sgb，代码行数:31，代码来源:ts_cfg.c
示例11: pzalloc
static QTNode *join_tsqueries(TSQuery a, TSQuery b, int8 operator)
{
QTNode *res = (QTNode *) pzalloc(sizeof(QTNode));
res->flags |= QTN_NEEDFREE;
res->valnode = (QueryItem *) pzalloc(sizeof(QueryItem));
res->valnode->type = QI_OPR;
res->valnode->qoperator.oper = operator;
res->child = (QTNode **) pzalloc(sizeof(QTNode *) * 2);
res->child[0] = QT2QTN(GETQUERY(b), GETOPERAND(b));
res->child[1] = QT2QTN(GETQUERY(a), GETOPERAND(a));
res->nchild = 2;
return res;
}
开发者ID:colinet，项目名称:sqlix，代码行数:17，代码来源:tsquery_op.c
示例12: gin_extract_tsquery
Datum
gin_extract_tsquery(PG_FUNCTION_ARGS)
{
TSQuery query = PG_GETARG_TSQUERY(0);
int32 *nentries = (int32 *) PG_GETARG_POINTER(1);
StrategyNumber strategy = PG_GETARG_UINT16(2);
Datum *entries = NULL;
*nentries = 0;
if (query->size > 0)
{
int4 i,
j = 0,
len;
QueryItem *item;
item = clean_NOT(GETQUERY(query), &len);
if (!item)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("query requires full scan, which is not supported by GIN indexes")));
item = GETQUERY(query);
for (i = 0; i < query->size; i++)
if (item[i].type == QI_VAL)
(*nentries)++;
entries = (Datum *) palloc(sizeof(Datum) * (*nentries));
for (i = 0; i < query->size; i++)
if (item[i].type == QI_VAL)
{
text *txt;
QueryOperand *val = &item[i].operand;
txt = (text *) palloc(VARHDRSZ + val->length);
SET_VARSIZE(txt, VARHDRSZ + val->length);
memcpy(VARDATA(txt), GETOPERAND(query) + val->distance, val->length);
entries[j++] = PointerGetDatum(txt);
if (strategy != TSearchWithClassStrategyNumber && val->weight != 0)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("@@ operator does not support lexeme weight restrictions in GIN index searches"),
errhint("Use the @@@ operator instead.")));
}
}
else
*nentries = -1; /* nothing can be found */
PG_FREE_IF_COPY(query, 0);
PG_RETURN_POINTER(entries);
}
开发者ID:50wu，项目名称:gpdb，代码行数:58，代码来源:tsginidx.c
示例13: find_wordentry
/*
* Returns a pointer to a WordEntry's array corresponding to 'item' from
* tsvector 't'. 'q' is the TSQuery containing 'item'.
* Returns NULL if not found.
*/
static WordEntry *
find_wordentry(TSVector t, TSQuery q, QueryOperand *item, int32 *nitem)
{
WordEntry *StopLow = ARRPTR(t);
WordEntry *StopHigh = (WordEntry *) STRPTR(t);
WordEntry *StopMiddle = StopHigh;
int difference;
*nitem = 0;
/* Loop invariant: StopLow <= item < StopHigh */
while (StopLow < StopHigh)
{
StopMiddle = StopLow + (StopHigh - StopLow) / 2;
difference = WordECompareQueryItem(STRPTR(t), GETOPERAND(q), StopMiddle, item, false);
if (difference == 0)
{
StopHigh = StopMiddle;
*nitem = 1;
break;
}
else if (difference > 0)
StopLow = StopMiddle + 1;
else
StopHigh = StopMiddle;
}
if (item->prefix)
{
if (StopLow >= StopHigh)
StopMiddle = StopHigh;
*nitem = 0;
while (StopMiddle < (WordEntry *) STRPTR(t) &&
WordECompareQueryItem(STRPTR(t), GETOPERAND(q), StopMiddle, item, true) == 0)
{
(*nitem)++;
StopMiddle++;
}
}
return (*nitem > 0) ? StopHigh : NULL;
}
开发者ID:amulsul，项目名称:postgres，代码行数:49，代码来源:tsrank.c
示例14: to_tsquery_byid
Datum
to_tsquery_byid(PG_FUNCTION_ARGS)
{
Oid cfgid = PG_GETARG_OID(0);
text *in = PG_GETARG_TEXT_P(1);
TSQuery query;
QueryItem *res;
int4 len;
query = parse_tsquery(text_to_cstring(in), pushval_morph, ObjectIdGetDatum(cfgid), false);
if (query->size == 0)
PG_RETURN_TSQUERY(query);
/* clean out any stopword placeholders from the tree */
res = clean_fakeval(GETQUERY(query), &len);
if (!res)
{
SET_VARSIZE(query, HDRSIZETQ);
query->size = 0;
PG_RETURN_POINTER(query);
}
memcpy((void *) GETQUERY(query), (void *) res, len * sizeof(QueryItem));
/*
* Removing the stopword placeholders might've resulted in fewer
* QueryItems. If so, move the operands up accordingly.
*/
if (len != query->size)
{
char *oldoperand = GETOPERAND(query);
int4 lenoperand = VARSIZE(query) - (oldoperand - (char *) query);
Assert(len < query->size);
query->size = len;
memmove((void *) GETOPERAND(query), oldoperand, VARSIZE(query) - (oldoperand - (char *) query));
SET_VARSIZE(query, COMPUTESIZE(len, lenoperand));
}
pfree(res);
PG_RETURN_TSQUERY(query);
}
开发者ID:mintuhouse，项目名称:postgresql-tuning，代码行数:43，代码来源:to_tsany.c
示例15: join_tsqueries
static QTNode *
join_tsqueries(TSQuery a, TSQuery b, int8 operator, uint16 distance)
{
QTNode *res = (QTNode *) palloc0(sizeof(QTNode));
res->flags |= QTN_NEEDFREE;
res->valnode = (QueryItem *) palloc0(sizeof(QueryItem));
res->valnode->type = QI_OPR;
res->valnode->qoperator.oper = operator;
if (operator == OP_PHRASE)
res->valnode->qoperator.distance = distance;
res->child = (QTNode **) palloc0(sizeof(QTNode *) * 2);
res->child[0] = QT2QTN(GETQUERY(b), GETOPERAND(b));
res->child[1] = QT2QTN(GETQUERY(a), GETOPERAND(a));
res->nchild = 2;
return res;
}
开发者ID:winlibs，项目名称:postgresql，代码行数:20，代码来源:tsquery_op.c
示例16: plainto_tsquery_byid
Datum
plainto_tsquery_byid(PG_FUNCTION_ARGS)
{
Oid cfgid = PG_GETARG_OID(0);
text *in = PG_GETARG_TEXT_P(1);
TSQuery query;
QueryItem *res;
int4 len;
query = parse_tsquery(text_to_cstring(in), pushval_morph, ObjectIdGetDatum(cfgid), true);
if (query->size == 0)
PG_RETURN_TSQUERY(query);
res = clean_fakeval(GETQUERY(query), &len);
if (!res)
{
SET_VARSIZE(query, HDRSIZETQ);
query->size = 0;
PG_RETURN_POINTER(query);
}
memcpy((void *) GETQUERY(query), (void *) res, len * sizeof(QueryItem));
if (len != query->size)
{
char *oldoperand = GETOPERAND(query);
int4 lenoperand = VARSIZE(query) - (oldoperand - (char *) query);
Assert(len < query->size);
query->size = len;
memcpy((void *) GETOPERAND(query), oldoperand, lenoperand);
SET_VARSIZE(query, COMPUTESIZE(len, lenoperand));
}
pfree(res);
PG_RETURN_POINTER(query);
}
开发者ID:a1exsh，项目名称:postgres，代码行数:38，代码来源:to_tsany.c
示例17: gin_extract_tsquery
Datum
gin_extract_tsquery(PG_FUNCTION_ARGS)
{
QUERYTYPE *query = (QUERYTYPE *) PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
uint32 *nentries = (uint32 *) PG_GETARG_POINTER(1);
StrategyNumber strategy = DatumGetUInt16(PG_GETARG_DATUM(2));
Datum *entries = NULL;
*nentries = 0;
if (query->size > 0)
{
int4 i,
j = 0,
len;
ITEM *item;
item = clean_NOT_v2(GETQUERY(query), &len);
if (!item)
elog(ERROR, "Query requires full scan, GIN doesn't support it");
item = GETQUERY(query);
for (i = 0; i < query->size; i++)
if (item[i].type == VAL)
(*nentries)++;
entries = (Datum *) palloc(sizeof(Datum) * (*nentries));
for (i = 0; i < query->size; i++)
if (item[i].type == VAL)
{
text *txt;
txt = (text *) palloc(VARHDRSZ + item[i].length);
VARATT_SIZEP(txt) = VARHDRSZ + item[i].length;
memcpy(VARDATA(txt), GETOPERAND(query) + item[i].distance, item[i].length);
entries[j++] = PointerGetDatum(txt);
if (strategy == 1 && item[i].weight != 0)
elog(ERROR, "With class of lexeme restrictions use @@@ operation");
}
}
PG_FREE_IF_COPY(query, 0);
PG_RETURN_POINTER(entries);
}
开发者ID:berkeley-cs186，项目名称:course-fa07，代码行数:49，代码来源:ginidx.c
示例18: mcelem_tsquery_selec
/*
* Extract data from the pg_statistic arrays into useful format.
*/
static Selectivity
mcelem_tsquery_selec(TSQuery query, Datum *mcelem, int nmcelem,
float4 *numbers, int nnumbers)
{
float4 minfreq;
TextFreq *lookup;
Selectivity selec;
int i;
/*
* There should be two more Numbers than Values, because the last two
* cells are taken for minimal and maximal frequency. Punt if not.
*
* (Note: the MCELEM statistics slot definition allows for a third extra
* number containing the frequency of nulls, but we're not expecting that
* to appear for a tsvector column.)
*/
if (nnumbers != nmcelem + 2)
return tsquery_opr_selec_no_stats(query);
/*
* Transpose the data into a single array so we can use bsearch().
*/
lookup = (TextFreq *) palloc(sizeof(TextFreq) * nmcelem);
for (i = 0; i < nmcelem; i++)
{
/*
* The text Datums came from an array, so it cannot be compressed or
* stored out-of-line -- it's safe to use VARSIZE_ANY*.
*/
Assert(!VARATT_IS_COMPRESSED(mcelem[i]) && !VARATT_IS_EXTERNAL(mcelem[i]));
lookup[i].element = (text *) DatumGetPointer(mcelem[i]);
lookup[i].frequency = numbers[i];
}
/*
* Grab the lowest frequency. compute_tsvector_stats() stored it for us in
* the one before the last cell of the Numbers array. See ts_typanalyze.c
*/
minfreq = numbers[nnumbers - 2];
selec = tsquery_opr_selec(GETQUERY(query), GETOPERAND(query), lookup,
nmcelem, minfreq);
pfree(lookup);
return selec;
}
开发者ID:RingsC，项目名称:postgres，代码行数:51，代码来源:ts_selfuncs.c
示例19: tsquerytree
/*
* debug function, used only for view query
* which will be executed in non-leaf pages in index
*/
Datum
tsquerytree(PG_FUNCTION_ARGS)
{
QUERYTYPE *query = (QUERYTYPE *) DatumGetPointer(PG_DETOAST_DATUM(PG_GETARG_DATUM(0)));
INFIX nrm;
text *res;
ITEM *q;
int4 len;
if (query->size == 0)
{
res = (text *) palloc(VARHDRSZ);
VARATT_SIZEP(res) = VARHDRSZ;
PG_RETURN_POINTER(res);
}
q = clean_NOT_v2(GETQUERY(query), &len);
if (!q)
{
res = (text *) palloc(1 + VARHDRSZ);
VARATT_SIZEP(res) = 1 + VARHDRSZ;
*((char *) VARDATA(res)) = 'T';
}
else
{
nrm.curpol = q;
nrm.buflen = 32;
nrm.cur = nrm.buf = (char *) palloc(sizeof(char) * nrm.buflen);
*(nrm.cur) = '\0';
nrm.op = GETOPERAND(query);
infix(&nrm, true);
res = (text *) palloc(nrm.cur - nrm.buf + VARHDRSZ);
VARATT_SIZEP(res) = nrm.cur - nrm.buf + VARHDRSZ;
strncpy(VARDATA(res), nrm.buf, nrm.cur - nrm.buf);
pfree(q);
}
PG_FREE_IF_COPY(query, 0);
PG_RETURN_POINTER(res);
}
开发者ID:berkeley-cs186，项目名称:course-fa07，代码行数:48，代码来源:query.c
示例20: ltxtq_out
Datum
ltxtq_out(PG_FUNCTION_ARGS)
{
ltxtquery *query = PG_GETARG_LTXTQUERY(0);
INFIX nrm;
if (query->size == 0)
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("syntax error"),
errdetail("Empty query.")));
nrm.curpol = GETQUERY(query);
nrm.buflen = 32;
nrm.cur = nrm.buf = (char *) palloc(sizeof(char) * nrm.buflen);
*(nrm.cur) = '\0';
nrm.op = GETOPERAND(query);
infix(&nrm, true);
PG_FREE_IF_COPY(query, 0);
PG_RETURN_POINTER(nrm.buf);
}
开发者ID:ASchurman，项目名称:BufStrat，代码行数:22，代码来源:ltxtquery_io.c
注：本文中的GETOPERAND函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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