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[xsl] How to make this XSLT elimination transformation works exclusively for different node parents?


Subject: [xsl] How to make this XSLT elimination transformation works exclusively for different node parents?
From: Jo Na <jkoe888@xxxxxxxxx>
Date: Fri, 8 Jun 2012 13:43:35 +0700

Hi,
I have this input:

<myroot>
    <nodeA id="a">
        <section id="i">
            <item1 id="0" method="create">
                <somechild>a</somechild>
            </item1>

            <item1 id="1" method="create">
                <otherchild>a</otherchild>
            </item1>
        </section>

        <section id="i">
            <item1 id="0" method="create"> <!-- second consecutive
create, we remove this -->
                <somechild>a</somechild>
            </item1>
            <item1 id="0" method="create"> <!-- third consecutive
create, BUT children have different value , so we don't remove this
-->
                <somechild>bbb</somechild>
            </item1>
            <item1 id="3" method="create">
                <other>xx</other>
            </item1>

            <item1 id="0" method="change">
                <otherchild>a</otherchild>
            </item1>
            <item1 id="0" method="change"> <!-- second consecutive
create, we remove this -->
                <otherchild>a</otherchild>
            </item1>
        </section>
    </nodeA>
</myroot>

and this is my xslt 2.0:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
   <xsl:output indent="yes"/>
   <xsl:strip-space elements="*"/>

   <xsl:template match="node()|@*">
       <xsl:copy>
           <xsl:apply-templates select="node()|@*"/>
       </xsl:copy>
   </xsl:template>

   <xsl:template
match="*[*][deep-equal(.,preceding::*[name()=current()/name()][@id=current()/
@id][1])]"/>
</xsl:stylesheet>

How to make that works for multiple nodeA with different id? Right now
my XSLT only works for 1 nodeA.
The objective is to remove successive duplicate with the same element
name item1 item2 etc, same id and same method.
This is what the multiple nodeA input and the expected output:
<myroot>
    <nodeA id="a">
        <section id="i">
            <item1 id="0" method="create">
                <somechild>a</somechild>
            </item1>

            <item1 id="1" method="create">
                <otherchild>a</otherchild>
            </item1>
        </section>

        <section id="i">
            <item1 id="0" method="create"> <!-- third consecutive
create, BUT children have different value , so we don't remove this
-->
                <somechild>bbb</somechild>
            </item1>
            <item1 id="3" method="create">
                <other>xx</other>
            </item1>

            <item1 id="0" method="change">
                <otherchild>a</otherchild>
            </item1>
        </section>
    </nodeA>

        <nodeA id="b">
        <section id="i">
            <item1 id="0" method="create">
                <somechild>a</somechild>
            </item1>

            <item1 id="1" method="create">
                <otherchild>a</otherchild>
            </item1>
        </section>

        <section id="i">
            <item1 id="0" method="create"> <!-- third consecutive
create, BUT children have different value , so we don't remove this
-->
                <somechild>bbb</somechild>
            </item1>
            <item1 id="3" method="create">
                <other>xx</other>
            </item1>

            <item1 id="0" method="change">
                <otherchild>a</otherchild>
            </item1>
        </section>
    </nodeA>
</myroot>

Expected Output:

<myroot>
    <nodeA id="a">
        <section id="i">
            <item1 id="0" method="create">
                <somechild>a</somechild>
            </item1>

            <item1 id="1" method="create">
                <otherchild>a</otherchild>
            </item1>
        </section>

        <section id="i">
            <item1 id="0" method="create"> <!-- third consecutive
create, BUT children have different value , so we don't remove this
-->
                <somechild>bbb</somechild>
            </item1>
            <item1 id="3" method="create">
                <other>xx</other>
            </item1>

            <item1 id="0" method="change">
                <otherchild>a</otherchild>
            </item1>
        </section>
    </nodeA>

    <nodeA id="b">
        <section id="i">
            <item1 id="0" method="create">
                <somechild>a</somechild>
            </item1>

            <item1 id="1" method="create">
                <otherchild>a</otherchild>
            </item1>
        </section>

        <section id="i">
            <item1 id="0" method="create"> <!-- third consecutive
create, BUT children have different value , so we don't remove this
-->
                <somechild>bbb</somechild>
            </item1>
            <item1 id="3" method="create">
                <other>xx</other>
            </item1>

            <item1 id="0" method="change">
                <otherchild>a</otherchild>
            </item1>
        </section>
    </nodeA>
</myroot>



Thanks very much.


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