C++ (Cpp) pq_sendtext Examples

Example #1

File: pseudotypes.c Project: badalex/postgresql-scratchpad

/*
 * cstring_send		- binary output routine for pseudo-type CSTRING.
 */
Datum
cstring_send(PG_FUNCTION_ARGS)
{
	char	   *str = PG_GETARG_CSTRING(0);
	StringInfoData buf;

	pq_begintypsend(&buf);
	pq_sendtext(&buf, str, strlen(str));
	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Example #2

File: json.c Project: sqlparser/postgres

/*
 * Binary send.
 */
Datum
json_send(PG_FUNCTION_ARGS)
{
	text	   *t = PG_GETARG_TEXT_PP(0);
	StringInfoData buf;

	pq_begintypsend(&buf);
	pq_sendtext(&buf, VARDATA_ANY(t), VARSIZE_ANY_EXHDR(t));
	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Example #3

File: name.c Project: qiuyesuifeng/gpdb

/*
 *		namesend			- converts name to binary format
 */
Datum
namesend(PG_FUNCTION_ARGS)
{
    Name		s = PG_GETARG_NAME(0);
    StringInfoData buf;

    pq_begintypsend(&buf);
    pq_sendtext(&buf, NameStr(*s), strlen(NameStr(*s)));
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Example #4

File: jsonb.c Project: MiniHero/postgres

/*
 * jsonb type send function
 *
 * Just send jsonb as a version number, then a string of text
 */
Datum
jsonb_send(PG_FUNCTION_ARGS)
{
	Jsonb	   *jb = PG_GETARG_JSONB(0);
	StringInfoData buf;
	StringInfo	jtext = makeStringInfo();
	int			version = 1;

	(void) JsonbToCString(jtext, VARDATA(jb), VARSIZE(jb));

	pq_begintypsend(&buf);
	pq_sendint(&buf, version, 1);
	pq_sendtext(&buf, jtext->data, jtext->len);
	pfree(jtext->data);
	pfree(jtext);

	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Example #5

File: tsvector.cpp Project: EccentricLoggers/peloton

Datum
tsvectorsend(PG_FUNCTION_ARGS)
{
	TSVector	vec = PG_GETARG_TSVECTOR(0);
	StringInfoData buf;
	int			i,
				j;
	WordEntry  *weptr = ARRPTR(vec);

	pq_begintypsend(&buf);

	pq_sendint(&buf, vec->size, sizeof(int32));
	for (i = 0; i < vec->size; i++)
	{
		uint16		npos;

		/*
		 * the strings in the TSVector array are not null-terminated, so we
		 * have to send the null-terminator separately
		 */
		pq_sendtext(&buf, STRPTR(vec) + weptr->pos, weptr->len);
		pq_sendbyte(&buf, '\0');

		npos = POSDATALEN(vec, weptr);
		pq_sendint(&buf, npos, sizeof(uint16));

		if (npos > 0)
		{
			WordEntryPos *wepptr = POSDATAPTR(vec, weptr);

			for (j = 0; j < npos; j++)
				pq_sendint(&buf, wepptr[j], sizeof(WordEntryPos));
		}
		weptr++;
	}

	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

Example #6

File: enum.c Project: Tao-Ma/postgres

Datum
enum_send(PG_FUNCTION_ARGS)
{
	Oid			enumval = PG_GETARG_OID(0);
	StringInfoData buf;
	HeapTuple	tup;
	Form_pg_enum en;

	tup = SearchSysCache1(ENUMOID, ObjectIdGetDatum(enumval));
	if (!HeapTupleIsValid(tup))
		ereport(ERROR,
				(errcode(ERRCODE_INVALID_BINARY_REPRESENTATION),
				 errmsg("invalid internal value for enum: %u",
						enumval)));
	en = (Form_pg_enum) GETSTRUCT(tup);

	pq_begintypsend(&buf);
	pq_sendtext(&buf, NameStr(en->enumlabel), strlen(NameStr(en->enumlabel)));

	ReleaseSysCache(tup);

	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}