Hi,
I am using Jaxen for evaluating XPaths in JDOM documents. It is a great
tool! I have one problem however. When evaluating functions (sum to be
spesific), I get an org.jaxen.UnresolvableException from getFunction() in
org.jaxen.SimpleFunctionContext.
The XPath I run is:
sum(/root/giro/produkter/produkt/sum)
I run it on the following XML document.
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE XML>
<root>
<giro>
<betaler>
<sted>0168 Oslo</sted>
<adresse>Melkeveien 2</adresse>
<navn>Villy Vonka</navn>
</betaler>
<produkter>
<produkt id="1">
<produktlinje>Bukse</produktlinje>
<sum>1000</sum>
</produkt>
<produkt id="2">
<produktlinje>Jakke</produktlinje>
<sum>2000</sum>
</produkt>
<produkt id="3">
<produktlinje>Skjorte</produktlinje>
<sum>500</sum>
</produkt>
<produkt id="4">
<produktlinje>Slips</produktlinje>
<sum>300</sum>
</produkt>
<suminkmva>3800</suminkmva>
<sumeksmva>3000</sumeksmva>
</produkter>
<fakturanummer>93248347</fakturanummer>
<belop>
<kr>3800</kr>
<ore>00</ore>
</belop>
<kid>93248347</kid>
<betalingsfrist>20.01.2002</betalingsfrist>
<fakturadato>20.01.2003</fakturadato>
</giro>
</root>
When debugging I find that the functions referenced in the functions HashMap
of org.jaxen.SimpleFunctionContext has keys with namespaceURI=null, whereas
the namespaceURI that enters getFunction() is the empty String, "". This
means that a legal function sum isn't resolved as desired.
The following fixes my problem, yet without removing the root of the
problem. I have changed getFunction() of org.jaxen.SimpleFunctionContext to:
public Function getFunction(String namespaceURI,
String prefix,
String localName )
throws UnresolvableException
{
if ("".equals(namespaceURI)) {
namespaceURI = null;
}
Object key = new QualifiedName( namespaceURI, localName );
if ( this.functions.containsKey(key) )
return (Function) this.functions.get( key );
else
throw new UnresolvableException( "Function " +
prefix + ":" + localName );
}
Is this a known problem or does it exist other resolutions?
Regards
Brynjar Glesnes
Entra Data AS, Hoffsveien 17, 0275 Oslo, Norway
+47 21 93 98 34 / +47 932 48 347 / +47 21 93 98 00
http://www.xmltransform.com
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