xpath query to check if all xml element have same value-CodePudding

I have the following xml

<collection>
<item>
    <id>001</id>
    <attributes>
        <attr1>A</attr1>
    </attributes>
</item>
<item>
    <id>002</id>
    <attributes>
        <attr1>A</attr1>
    </attributes>
</item>
<item>
    <id>003</id>
    <attributes>
        <attr1>B</attr1>
    </attributes>
</item>
</collection>

I need my xpath query to return me "true" if all attr1='A'. I tried with this but it returns "true" even if only one attr1="A".

//item/attr1/text()='A'

CodePudding user response：

Your current XPath is returning true because there is at least one attr1 element that has a text() value of A.

You could test whether the count of attr1 elements is equal to the count of attr1 elements that have text() with the value A:

count(//item/attr1) = count(//item/attr1[text() = 'A'])

Or you could evaluate an expression to test that there are not() any attr1 elements that are not equal to A:

not(//item/attr1[not(text() = 'A')])

CodePudding user response：

You can get the text value of the first node with attr1 and then to search for nodes with attr1 with text not equals to that text value:

textValue = //item/attr1/text()
//item/attr1[not(text() = textValue)]