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Bug#16319: XML: extractvalue() returns syntax errors for some functions

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mysql-test/r/xml.result:
  Adding test case
mysql-test/t/xml.test:
  Adding test case
sql/item_xmlfunc.cc:
  Adding support for missing XPath function string-length().
  Fixing function lookup to allow functions with one optional arguments
  (i.e. with 0 or 1 arguments)
This commit is contained in:
unknown 2006-04-07 14:07:56 +05:00
parent 6de776f70a
commit e84041f174
3 changed files with 55 additions and 1 deletions
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24
mysql-test/r/xml.result
View File

@ -468,6 +468,30 @@ extractValue(@xml, '/a/@b[substring(.,2,1)="1"]')
select extractValue(@xml, '/a/@b[substring(.,2,1)="2"]');
extractValue(@xml, '/a/@b[substring(.,2,1)="2"]')
12 22
SET @xml='<a><b>b1</b><b>b2</b></a>';
SELECT extractValue(@xml, '/a/b[string-length("x")=1]');
extractValue(@xml, '/a/b[string-length("x")=1]')
b1 b2
SELECT extractValue(@xml, '/a/b[string-length("xx")=2]');
extractValue(@xml, '/a/b[string-length("xx")=2]')
b1 b2
SELECT extractValue(@xml, '/a/b[string-length("xxx")=2]');
extractValue(@xml, '/a/b[string-length("xxx")=2]')
SELECT extractValue(@xml, '/a/b[string-length("x")]');
extractValue(@xml, '/a/b[string-length("x")]')
b1
SELECT extractValue(@xml, '/a/b[string-length("xx")]');
extractValue(@xml, '/a/b[string-length("xx")]')
b2
SELECT extractValue(@xml, '/a/b[string-length()]');
extractValue(@xml, '/a/b[string-length()]')
b2
SELECT extractValue(@xml, 'string-length()');
ERROR HY000: XPATH syntax error: ''
SELECT extractValue(@xml, 'string-length("x")');
extractValue(@xml, 'string-length("x")')
1
SET @xml='<a b="b11" b="b12" b="b21" b="22"/>';
select extractValue(@xml,'/a/@b');
extractValue(@xml,'/a/@b')

14
mysql-test/t/xml.test
View File

@ -192,6 +192,20 @@ select extractValue(@xml, '/a/@b[substring(.,1,1)="2"]');
select extractValue(@xml, '/a/@b[substring(.,2,1)="1"]');
select extractValue(@xml, '/a/@b[substring(.,2,1)="2"]');
#
# Bug#16319: XML: extractvalue() returns syntax errors for some functions
#
SET @xml='<a><b>b1</b><b>b2</b></a>';
SELECT extractValue(@xml, '/a/b[string-length("x")=1]');
SELECT extractValue(@xml, '/a/b[string-length("xx")=2]');
SELECT extractValue(@xml, '/a/b[string-length("xxx")=2]');
SELECT extractValue(@xml, '/a/b[string-length("x")]');
SELECT extractValue(@xml, '/a/b[string-length("xx")]');
SELECT extractValue(@xml, '/a/b[string-length()]');
--error 1105
SELECT extractValue(@xml, 'string-length()');
SELECT extractValue(@xml, 'string-length("x")');
SET @xml='<a b="b11" b="b12" b="b21" b="22"/>';
select extractValue(@xml,'/a/@b');
select extractValue(@xml,'/a/@b[contains(.,"1")]');

18
sql/item_xmlfunc.cc
View File

@ -1133,6 +1133,13 @@ static Item *create_func_number(MY_XPATH *xpath, Item **args, uint nargs)
}
static Item *create_func_string_length(MY_XPATH *xpath, Item **args, uint nargs)
{
Item *arg= nargs ? args[0] : xpath->context;
return arg ? new Item_func_char_length(arg) : 0;
}
static Item *create_func_round(MY_XPATH *xpath, Item **args, uint nargs)
{
return new Item_func_round(args[0], new Item_int((char*)"0",0,1),0);
@ -1243,9 +1250,11 @@ static MY_XPATH_FUNC my_func_names[] =
{"substring" , 9 , 2 , 3 , create_func_substr},
{"translate" , 9 , 3 , 3 , 0},
{"local-name" , 10 , 0 , 1 , 0},
{"starts-with" , 11 , 2 , 2 , 0},
{"namespace-uri" , 13 , 0 , 1 , 0},
{"string-length" , 13 , 0 , 1 , create_func_string_length},
{"substring-after" , 15 , 2 , 2 , 0},
{"normalize-space" , 15 , 0 , 1 , 0},
{"substring-before" , 16 , 2 , 2 , 0},
@ -1849,7 +1858,12 @@ static int my_xpath_parse_FunctionCall(MY_XPATH *xpath)
for (nargs= 0 ; nargs < func->maxargs; )
{
if (!my_xpath_parse_Expr(xpath))
return 0;
{
if (nargs < func->minargs)
return 0;
else
goto right_paren;
}
args[nargs++]= xpath->item;
if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_COMMA))
{
@ -1859,6 +1873,8 @@ static int my_xpath_parse_FunctionCall(MY_XPATH *xpath)
break;
}
}
right_paren:
if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_RP))
return 0;