bk commit into 5.1 tree (bar:1.2347) BUG#18170

[bar]

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ChangeSet
  1.2347 06/04/17 11:49:20 bar@stripped +3 -0
  Bug#18170: XML: ExtractValue(): XPath expression can't use QNames (colon in names)
  
  Problem source:
  Qualified names (aka QName) didn't work as tag names and attribute names,
  because the parser lacked a real rule to scan QName, so it understood
  only non-qualified names without prefixes.
  
  Solution:
  New rule was added to check both "ident" and "ident:ident" sequences.

  sql/item_xmlfunc.cc
    1.14 06/04/17 11:49:04 bar@stripped +25 -1
    Adding real QName parser rule and using it in NodeTest rule.

  mysql-test/t/xml.test
    1.13 06/04/17 11:49:04 bar@stripped +8 -0
    Adding test case

  mysql-test/r/xml.result
    1.13 06/04/17 11:49:03 bar@stripped +9 -0
    Adding test case

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	bar
# Host:	bar.intranet.mysql.r18.ru
# Root:	/usr/home/bar/mysql-5.1-new.b18170

--- 1.12/mysql-test/r/xml.result	2006-04-11 17:12:19 +05:00
+++ 1.13/mysql-test/r/xml.result	2006-04-17 11:49:03 +05:00
@@ -641,3 +641,12 @@ CALL p2();
 EXTRACTVALUE(p,'/Ñ/r')
 A
 DROP PROCEDURE p2;
+select extractValue('<ns:element xmlns:ns="myns"/>','count(ns:element)');
+extractValue('<ns:element xmlns:ns="myns"/>','count(ns:element)')
+1
+select extractValue('<ns:element
xmlns:ns="myns">a</ns:element>','/ns:element');
+extractValue('<ns:element xmlns:ns="myns">a</ns:element>','/ns:element')
+a
+select extractValue('<ns:element
xmlns:ns="myns">a</ns:element>','/ns:element/@xmlns:ns');
+extractValue('<ns:element
xmlns:ns="myns">a</ns:element>','/ns:element/@xmlns:ns')
+myns

--- 1.12/mysql-test/t/xml.test	2006-04-11 17:12:19 +05:00
+++ 1.13/mysql-test/t/xml.test	2006-04-17 11:49:04 +05:00
@@ -321,3 +321,11 @@ END//
 DELIMITER ;//
 CALL p2();
 DROP PROCEDURE p2;
+
+#
+# Bug#18170: XML: ExtractValue():
+# XPath expression can't use QNames (colon in names)
+#
+select extractValue('<ns:element xmlns:ns="myns"/>','count(ns:element)');
+select extractValue('<ns:element
xmlns:ns="myns">a</ns:element>','/ns:element');
+select extractValue('<ns:element
xmlns:ns="myns">a</ns:element>','/ns:element/@xmlns:ns');

--- 1.13/sql/item_xmlfunc.cc	2006-04-11 13:24:50 +05:00
+++ 1.14/sql/item_xmlfunc.cc	2006-04-17 11:49:04 +05:00
@@ -2267,6 +2267,30 @@ static int my_xpath_parse_Number(MY_XPAT
 
 
 /*
+  QName grammar can be found in a separate document
+  http://www.w3.org/TR/REC-xml-names/#NT-QName
+
+  [6] 	QName     ::= (Prefix ':')? LocalPart
+  [7] 	Prefix    ::= NCName
+  [8] 	LocalPart ::= NCName
+*/
+static int
+my_xpath_parse_QName(MY_XPATH *xpath)
+{
+  const char *beg;
+  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_IDENT))
+    return 0;
+  beg= xpath->prevtok.beg;
+  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_COLON))
+    return 1; /* Non qualified name */
+  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_IDENT))
+    return 0;
+  xpath->prevtok.beg= beg;
+  return 1;
+}
+
+
+/*
   Scan Variable reference
 
   SYNOPSYS
@@ -2299,7 +2323,7 @@ my_xpath_parse_VariableReference(MY_XPAT
 static int
 my_xpath_parse_NodeTest_QName(MY_XPATH *xpath)
 {
-  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_IDENT))
+  if (!my_xpath_parse_QName(xpath))
     return 0;
   DBUG_ASSERT(xpath->context);
   uint len= xpath->prevtok.end - xpath->prevtok.beg;