how to substitute variable in xpath query

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nkankipati asked Apr 18, '10 ericnute edited Apr 18, '10

how to substitute variable in xpath query

mapped/Regex/Body/line[./get_image_size/image_name='c7200-adventerprisek9-mz.151-1.10.T*']/get_image_size/image_size <<< working

mapped/Regex/Body/line[./get_image_size/image_name="c7200-adventerprisek9-mz.151-1.10.T*"]/get_image_size/image_size <<< working

set imagename "c7200-adventerprisek9-mz"

set imagever "151-1.10.T"

mapped/Regex/Body/line[./get_image_size/image_name='$imagename.$imagever*']/get_image_size/image_size <<< not working

mapped/Regex/Body/line[./get_image_size/image_name=\'$imagename.$imagever*\']/get_image_size/image_size <<< not working

mapped/Regex/Body/line[./get_image_size/image_name=\"$imagename.$imagever*\"]/get_image_size/image_size <<< not working

i tried several other ways also and searched lot of examples in forum by searcing with "xpath variable substitution""xpath substitution" returned lot of examples

but i couldn't get the solution...

any help is appreicated.

what am i missing here ???

iTest xpath

10 |950

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Answer 1 · 2010-04-18T13:09:02Z

PaulD answered Apr 18, '10 PaulD posted Apr 18, '10

There are two things to understand:

1) You must enable substitution on a query string. By default, it is turned off (depending on where you are using it).

2) XPATH queries (including your example here) contain characters that are special for substitution. In particular, the square brackets [ ] used for subqueries in XPATH also cause command substitution. So if you enable substitution, you need to "escape" these special characters.

So if you enable substitution on your query, you will end up with something like this:

mapped/Regex/Body/line\[./get_image_size/image_name='$imagename.$imagever*'\]/get_image_size/image_size

All I've done is to put backslashes in front of the square brackets.

1

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nkankipati commented · Apr 18, 2010 at 03:15 PM

thanks, Paul

after i click grey box, it turned into little "F" which is attached to the corner of the query text field in step properties, [enable substitution on a query string]

and it worked.

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