Xpath how to select an element based on an order and dependent of its existence
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Published on 2010-04-05T03:10:05Z
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2010/04/05
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Hi, how to select an element based on an order and dependent of its existence in XPath ? For example how to select the best quality video if it exist.
<VIDEOS>
<LOW_RES>video_L.flv</LOW_RES>
<HI_RES>video_H.flv</HI_RES>
<HD/>
</VIDEOS>
this should return video_H.flv because the hd version doesn't exist
this case can exist (the videos names can be random):
<VIDEOS>
<LOW_RES>video_L.flv</LOW_RES>
<HI_RES>video_H.flv</HI_RES>
<HD>video_hd.mp4</HD>
</VIDEOS>
this should return video_hd.mp4 because the hd version exist. Many thanks.
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