Question

I have an XML file from which I have to extract a specific part based on the id attribute.

Input XML

<root>
<item id="id_1" state="closed">
    <content>
        <name>Details</name>
    </content>
    <item state="closed" id="id_1_1">
        <content>
            <name title="Name">Identity</name>
        </content>
        <item id="id_1_1_1" state="closed">
            <content>
                <name title="Name">Name</name>
            </content>
            <item id="id_1_1_1_1">
                <content>
                    <name title="First Name">First Name</name>
                </content>
            </item>
            <item id="id_1_1_1_2">
                <content>
                    <name title="Last Name">Last Name</name>
                </content>
            </item>
        </item>
        <item id="id_1_1_2" state="closed">
            <content>
                <name title="Address">Address</name>
            </content>
            <item id="id_1_1_2_1">
                <content>
                    <name title="Address Line 1">Line 1</name>
                </content>
            </item>
            <item id="id_1_1_2_2">
                <content>
                    <name title="Address Line 2">Line 2</name>
                </content>
            </item>
            <item id="id_1_1_2_3">
                <content>
                    <name title="City">City</name>
                </content>
            </item>
        </item>
    </item>
<item>
</root>

If I gave id_1_1 as input my output xml should be as below

Output

<item id="id_1_1_1" state="closed">
    <content>
        <name title="Name">Name</name>
    </content>
</item>
<item id="id_1_1_2" state="closed">
    <content>
        <name title="Address">Address</name>
    </content>
</item>

The output should take the items immediate below the selected node(of input id), and not any depth further.

Answer 1

This transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <xsl:template match="text()"/>

 <xsl:template match="item[@id='id_1_1']/item">
  <xsl:copy>
   <xsl:copy-of select="@*"/>
   <xsl:copy-of select="content"/>
  </xsl:copy>
 </xsl:template>
</xsl:stylesheet>

when applied on the provided XML (slightly corrected to be made well-formed!):

<root>
    <item id="id_1" state="closed">
        <content>
            <name>Details</name>
        </content>
        <item state="closed" id="id_1_1">
            <content>
                <name title="Name">Identity</name>
            </content>
            <item id="id_1_1_1" state="closed">
                <content>
                    <name title="Name">Name</name>
                </content>
                <item id="id_1_1_1_1">
                    <content>
                        <name title="First Name">First Name</name>
                    </content>
                </item>
                <item id="id_1_1_1_2">
                    <content>
                        <name title="Last Name">Last Name</name>
                    </content>
                </item>
            </item>
            <item id="id_1_1_2" state="closed">
                <content>
                    <name title="Address">Address</name>
                </content>
                <item id="id_1_1_2_1">
                    <content>
                        <name title="Address Line 1">Line 1</name>
                    </content>
                </item>
                <item id="id_1_1_2_2">
                    <content>
                        <name title="Address Line 2">Line 2</name>
                    </content>
                </item>
                <item id="id_1_1_2_3">
                    <content>
                        <name title="City">City</name>
                    </content>
                </item>
            </item>
        </item>
    </item>
</root>

produces the wanted, correct result:

<item id="id_1_1_1" state="closed">
   <content>
      <name title="Name">Name</name>
   </content>
</item>
<item id="id_1_1_2" state="closed">
   <content>
      <name title="Address">Address</name>
   </content>
</item>