Add send and recv functions for xml type.

Author: petere

src/backend/utils/adt/xml.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.6 2006/12/28 03:17:38 petere Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.7 2006/12/28 14:28:36 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -34,6 +34,7 @@
 #endif /* USE_LIBXML */
 
 #include "fmgr.h"
+#include "libpq/pqformat.h"
 #include "mb/pg_wchar.h"
 #include "nodes/execnodes.h"
 #include "utils/builtins.h"
@@ -83,8 +84,7 @@ xml_in(PG_FUNCTION_ARGS)
 
 	/*
 	 * Parse the data to check if it is well-formed XML data.  Assume
-	 * that ERROR occurred if parsing failed.  Do we need DTD
-	 * validation (if DTD exists)?
+	 * that ERROR occurred if parsing failed.
 	 */
 	xml_parse(vardata, false, true);
 
@@ -112,6 +112,48 @@ xml_out(PG_FUNCTION_ARGS)
 }
 
 
+Datum
+xml_recv(PG_FUNCTION_ARGS)
+{
+#ifdef USE_LIBXML
+	StringInfo	buf = (StringInfo) PG_GETARG_POINTER(0);
+	xmltype	   *result;
+	char	   *str;
+	int			nbytes;
+
+	str = pq_getmsgtext(buf, buf->len - buf->cursor, &nbytes);
+
+	result = (xmltype *) palloc(nbytes + VARHDRSZ);
+	VARATT_SIZEP(result) = nbytes + VARHDRSZ;
+	memcpy(VARDATA(result), str, nbytes);
+	pfree(str);
+
+	/*
+	 * Parse the data to check if it is well-formed XML data.  Assume
+	 * that ERROR occurred if parsing failed.
+	 */
+	xml_parse(result, false, true);
+
+	PG_RETURN_XML_P(result);
+#else
+	NO_XML_SUPPORT();
+	return 0;
+#endif
+}
+
+
+Datum
+xml_send(PG_FUNCTION_ARGS)
+{
+	xmltype	   *x = PG_GETARG_XML_P(0);
+	StringInfoData buf;
+
+	pq_begintypsend(&buf);
+	pq_sendbytes(&buf, VARDATA(x), VARSIZE(x) - VARHDRSZ);
+	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
+}
+
+
 #ifdef USE_LIBXML
 static void
 appendStringInfoText(StringInfo str, const text *t)

src/include/catalog/catversion.h

@@ -37,7 +37,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.366 2006/12/24 00:29:19 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.367 2006/12/28 14:28:36 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	200612231
+#define CATALOG_VERSION_NO	200612281
 
 #endif

src/include/catalog/pg_proc.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.432 2006/12/24 00:29:19 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.433 2006/12/28 14:28:36 petere Exp $
  *
  * NOTES
  *	  The script catalog/genbki.sh reads this file and generates .bki
@@ -3987,6 +3987,11 @@ DATA(insert OID = 2896 (  xml			   PGNSP PGUID 12 f f t f i 1 142 "25" _null_ _n
 DESCR("perform a non-validating parse of a character string to produce an XML value");
 DATA(insert OID = 2897 (  xmlvalidate 	   PGNSP PGUID 12 f f t f i 2 16 "142 25" _null_ _null_ _null_ xmlvalidate - _null_ ));
 DESCR("validate an XML value");
+DATA(insert OID = 2898 (  xml_recv		   PGNSP PGUID 12 f f t f s 1 142 "2281" _null_ _null_ _null_	xml_recv - _null_ ));
+DESCR("I/O");
+DATA(insert OID = 2899 (  xml_send		   PGNSP PGUID 12 f f t f s 1 17 "142" _null_ _null_ _null_	xml_send - _null_ ));
+DESCR("I/O");
+
 
 /*
  * Symbolic values for provolatile column: these indicate whether the result

src/include/catalog/pg_type.h

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.174 2006/12/28 01:09:01 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.175 2006/12/28 14:28:36 petere Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -316,7 +316,7 @@ DATA(insert OID = 83 (	pg_class		PGNSP PGUID -1 f c t \054 1259 0 record_in reco
 #define PG_CLASS_RELTYPE_OID 83
 
 /* OIDS 100 - 199 */
-DATA(insert OID = 142 ( xml		   PGNSP PGUID -1 f b t \054 0 0 xml_in xml_out - - - i x f 0 -1 0 _null_ _null_ ));
+DATA(insert OID = 142 ( xml		   PGNSP PGUID -1 f b t \054 0 0 xml_in xml_out xml_recv xml_send - i x f 0 -1 0 _null_ _null_ ));
 DESCR("XML content");
 #define XMLOID 142
 DATA(insert OID = 143 ( _xml	   PGNSP PGUID -1 f b t \054 0 142 array_in array_out array_recv array_send - i x f 0 -1 0 _null_ _null_ ));

src/include/utils/xml.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/xml.h,v 1.3 2006/12/24 00:29:20 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/xml.h,v 1.4 2006/12/28 14:28:36 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -26,6 +26,8 @@ typedef struct varlena xmltype;
 
 extern Datum xml_in(PG_FUNCTION_ARGS);
 extern Datum xml_out(PG_FUNCTION_ARGS);
+extern Datum xml_recv(PG_FUNCTION_ARGS);
+extern Datum xml_send(PG_FUNCTION_ARGS);
 extern Datum xmlcomment(PG_FUNCTION_ARGS);
 extern Datum texttoxml(PG_FUNCTION_ARGS);
 extern Datum xmlvalidate(PG_FUNCTION_ARGS);