CODEWITHSUNDEEP
xmlxsltxpathparent-childsiblings
Quan M Le
Quan M Le

Reputation: 73

Xpath get value from parent node of siblings

Currently I have some xml structure like this:

<element type="Input" name="nationality">
   <property i18n="true" text="Nationality" prefix="person.nationality."
    name="caption">caption</property>
   <property i18n="true" text="Nationality" prefix="person.nationality."
    name="desc">desc</property>
   <property name="visible">1</property>
   <property name="mandatory">0</property>
   <property name="value">AUS</property>
   <restriction prefix="country." base="String">
    <enumeration text="Albania" value="ALB" />
    <enumeration text="Algeria" value="DZA" />
    <enumeration text="Argentina" value="ARG" />
    <enumeration text="Australia" value="AUS" />
    <enumeration text="Austria" value="AUT" />
    <enumeration text="Bahrain" value="BHR" />
   </restriction>
</element>

I would like to ask is there any way using xpath to extract value of enumeration[@text] tag with value equals with text in property[@name='value']. In this case the expectation text "Australia".

It's just a first time I use xpath, any idea will be appreciated. Thanks all.

Upvotes: 3

Views: 3647

Answers (2)

Dimitre Novatchev
Dimitre Novatchev

Reputation: 243449

Use:

/*/restriction/*[@value = /*/property[@name='value']]/@text

This selects any text attribute of any child element of /*/restriction, whose value attribute is equal to the string value of a property child of the top element, that (the property child) has a name attribute, whose string value is the string "value".

If you don't want to select the attribute, but just its string value, use:

string(/*/restriction/*[@value = /*/property[@name='value']]/@text)

XSLT - based verification:

 <xsl:template match="/">
  <xsl:value-of select=
  "/*/restriction/*[@value = /*/property[@name='value']]/@text"/>
==========
  <xsl:value-of select=
  "string(/*/restriction/*[@value = /*/property[@name='value']]/@text)"/>
 </xsl:template>
</xsl:stylesheet>

When this transformation is applied on the provided XML document:

<element type="Input" name="nationality">
   <property i18n="true" text="Nationality" prefix="person.nationality."
    name="caption">caption</property>
   <property i18n="true" text="Nationality" prefix="person.nationality."
    name="desc">desc</property>
   <property name="visible">1</property>
   <property name="mandatory">0</property>
   <property name="value">AUS</property>
   <restriction prefix="country." base="String">
    <enumeration text="Albania" value="ALB" />
    <enumeration text="Algeria" value="DZA" />
    <enumeration text="Argentina" value="ARG" />
    <enumeration text="Australia" value="AUS" />
    <enumeration text="Austria" value="AUT" />
    <enumeration text="Bahrain" value="BHR" />
   </restriction>
</element>

the two xpath expressions are evaluated against the above document and the string values of the results of these evaluations (properly delimited) are copied to the output:

Australia
==========
  Australia

Upvotes: 3

Kirill Polishchuk
Kirill Polishchuk

Reputation: 56162

Use:

/*/*/enumeration[@value = ../../*[@name = 'value']]/@text

Upvotes: 3

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