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I have the following xml and want to get the attribute (identifier='content') value for the attribute (identifier='id') with id 510 with the help of xpath. 

<product id='1'> <row='1'> <attribute identifier='id'>510</attribute> <attribute identifier='content'>Test 1</attribute> </row> <row='2'> <attribute identifier='id'>100</attribute> <attribute identifier='content'>Test 2</attribute> </row> ... </product>

I tried it with:

product[@id='1']/row/attribute[@identifier='id' and text()='510']

But as I already know this returns only the content of the attribute with identifier='id'. How to get the value of identifier='content' where identifier 'id'= 510?

Thanks for any help.

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    This is no XML, something's very wrong with your <row/> elements. Commented Feb 17, 2014 at 14:30

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You're looking for the value of the attribute element named content for a row that has an id of 510:

//product[@id='1']/row[attribute[@identifier='id'] = '510']/attribute[@identifier='content']

The nested predicate selects attribute elements whose identifier is id and checks whether any of them has the value 510.

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