Re: namespace aware java-xpathapi problem

Hi Sanjay,

> I have my xml doc like below
>
> <Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns="
> http://www.x.com/XYZ"  type="X">
> <level1>
>      <level2 xsi:type = 'someValue'>
>           <details>description</details>
>      </level2>
> </level1>
>
> </Root>

Note that the level2 element (which is in the http://www.x.com/XYZ
namespace) has a type attribute in the
http://www.w3.org/2001/XMLSchema-instance namespace.

> If I try to get to the level2 node by using xpathStr as
> "//xs:level2[@type = 'someValue']", I am unable to get the node. If
> I remove "xsi:" from the XML, then the same XPath works fine.

The path "//xs:level2[@type = 'someValue']" looks for an level2
element in the namespace denoted by the prefix 'xs' that has a type
attribute *in no namespace* with the value 'someValue'. Your XML
document doesn't have such a level2 element - the only level2 element
that it contains has a type attribute *in the
http://www.w3.org/2001/XMLSchema-instance namespace*.

So you need to change the path so that it accesses the value of the
xsi:type attribute instead:

  //xs:level2[@xsi:type = 'someValue']

and you need to make sure that your prefix resolver associates the
prefix 'xsi' with the namespace
'http://www.w3.org/2001/XMLSchema-instance'.

I hope that helps,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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