Hi all,
I am using xalan-c 1.8.0 for the generation of an XML file using another XML
file and an XSLT file as input.
For a special spatial functionality I have to call an external function with
2 parameters.
The external function expects 2 strings containing the stringrepresentaion
of two elements of my input source.
input:
<?xml...>
<Main>
...
<Foo>
<SubFoo>
<Value>
blah
</Value>
</SubFoo>
<Foo>
<Bar>
<SubFoo>
<Value>
blahblah
</Value>
</SubBar>
<Bar>
...
</Main>
xls:
...
<xsl:template match="/">
...
<xsl:variable name="foo" select="//Foo[1]"/>
<xsl:variable name="bar" select="//Bar[1]"/>
<xsl:variable name="result"
select="ext:compare($foo/SubFoo,$bar/SubFoo)"/>
...
The excecute-method of my external function class looks like:
XObjectPtr FunctionCompare::execute(XPathExecutionContext& executionContext,
XalanNode* context,
const XObjectPtr arg1, const XObjectPtr arg2,
const LocatorType* locator) const
{
#if defined(XALAN_STRICT_ANSI_HEADERS)
using std::strlen;
#endif
if (arg1.null() || arg2.null())
{
executionContext.error(getError(), context, locator);
}
bool intersectsResult;
std::vector<char> geom1CharVek = arg1->str().transcode();
char* geom1Chars = &geom1CharVek[0];
std::vector<char> geom2CharVek = arg2->str().transcode();
char* geom2Chars = &geom2CharVek[0];
// debug
std::cerr << "geom1Chars " << geom1Chars << std::endl;
std::cerr << "geom2Chars " << geom2Chars << std::endl;
// debug
// todo...
comparisonResult = true;
// todo...
return
executionContext.getXObjectFactory().createBoolean(comparisonResult);
}
Actually the two "Value"s themselves are complex GML structures.
Inside of the external function I need the parameters as strings like
------------------------------
<Value>
blah
</Value>
------------------------------
... and ...
------------------------------
<Value>
blahblah
</Value>
------------------------------
... but I do get them like ...
------------------------------
blah
------------------------------
... and ...
------------------------------
blahblah
------------------------------
The result (true/false) is returned correctly.
What am I doing wrong?
Thanks, Ulf
