XML get element with xpath

Question

Ive got this xml:

<root>
    <provision>
        <Stage StageNumber="1"/>
        <Stage StageNumber="2"/>
    </provision>
    <provision>
        <Stage StageNumber="1"/>
        <Stage StageNumber="2"/>
    </provision>
    <provision>
        <Stage StageNumber="1"/>
        <Stage StageNumber="3"/>
    </provision>
    <Stage StageNumber="1"/>
    <Stage StageNumber="2"/>
    <Stage StageNumber="3"/>
</root>

and i need to select attribute StageNumber that has single provision on it; By single i mean that i have 3 stages, and every stage got some provision in it, but data stored in different way. It that case answer should be 3.

Can you explain "that has single provision on it" more? It isn't clear why the answer should be 3. I don't see the difference between any of the provision elements. — Daniel Haley
– Daniel Haley, Commented Apr 18, 2016 at 14:11

hr_117 · Accepted Answer · 2016-04-18 14:41:50Z

1

Sound as you like to find a Stage with unique StageNumber. Try this;

.//Stage[ not(
        ../preceding-sibling::provision/Stage/@StageNumber = @StageNumber  or 
        ../following-sibling::provision/Stage/@StageNumber = @StageNumber)]"

answered Apr 18, 2016 at 14:41

hr_117

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