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xpath test on "

danclemson
danclemson asked
on
Medium Priority
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Last Modified: 2008-02-26
hi,

I used xpath expression:
//Object1/@name[contains(.,'"')]
to test if the Object1 name attribute contains "
It does not return the first Object1.

However, if I use expression:
//Object1/@name[contains(.,'"')]
It gives correct object.

Why?

<test>
<Object1 name="&quot;AA&quot; BB">11</Object1>
<Object2 name="&quot;AA&quot;">22</Object2>
<Object1 name = "CC">33</Object1>
</test>
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Commented:
It's your parser.  it's not unescaping the value in the literal.  The .NET parser (which I tested with) performed as you expected:

//Object1/@name[contains(.,'&quot;')] worked and found the match
while

//Object1/@name[contains(.,'"')]
threw a parser error
Commented:
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Commented:
Hi,

Thanks for the reply.
I think both of you are right.
I was using XMLSPY xpath evaluation.
Don't know what's the underline implementation of this xpath evalutation function. But seems it's not escaping the entity reference.

Commented:
In my version of XML Spy (4.4), it finds the node with

//Object1/@name[contains(.,'&quot;')]

and not

//Object1/@name[contains(.,'"')]

But XML Spy has some peculiarities.  I believe they're treating it as an XSLT XPath, because that's what you'd be doing with Spy.  I'm surprised you don't get it with the first expression and you do with the second...what version are you using?

I created an XPath evaluator some years ago that worked through the web.  That's when I discovered that the selectSingleNode method does not parse the XPath as "XML", and entities are not expanded.  

Regards,
Mike Sharp
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