Hi everybody.
I have input XML Document like this:

   <ABC>
  <efg>fgh</efg>
  <hij>sdf</hij>
  <abc>
    <PP id="111" id-1="222" >
      <IPI id="333" id-2="444" >
       <p1>p1p1p1</p1>
      </IPI>
      <IPI id="sss" id-2="666" >
       <p1>p2p2p2</p1>
      </IPI>
    </PP>
    <PP id="777" id-1="888" >
      <IPI id="123" id-2="234" >
       <p1>p3p3p3</p1>
      </IPI>
      <IPI id="456" id-2="567" >
       <p1>p4p4p4</p1>
      </IPI>
    </PP>
    <IP id="rrr" id-1="aaa">
      <i1>i1i1i1</i1>
    </IP>
    <IP id="sss" id-1="bbb">
      <i1>i2i2i2</i1>
    </IP>
    <IP id="ttt" id-1="ccc">
      <i1>i3i3i3</i1>
    </IP>
    <IP id="uuu" id-1="ddd">
      <i1>i4i4i4</i1>
    </IP>
    <PR id="xxx">
      <r1>r1r1r1</r1>
    </PR>
    <PR id="bbb">
      <r1>r2r2r2</r1>
    </PR>
    <PR id="zzz">
      <r1>r3r3r3</r1>
    </PR>
  </abc>
</ABC>

I need to create XSLT Stylesheet which retrieves from this XML only those
elements "PP", "IP" and "PR" where:
(PP/IPI/@id = IP/@id) and (IP/@id-1 = PR/@id).

Other words I should have result containing:

<abc>
    <PP id="111" id-1="222" >
      <IPI id="333" id-2="444" >
       <p1>p1p1p1</p1>
      </IPI>
      <IPI id="sss" id-2="666" >
       <p1>p2p2p2</p1>
      </IPI>
    </PP>
    <IP id="sss" id-1="bbb">
      <i1>i2i2i2</i1>
    </IP>
    <PR id="bbb">
      <r1>r2r2r2</r1>
    </PR>
</abc>

If beeing already within <xsl:template match="abc">
I use <xsl:apply-templates select="PP|IP|PR"> - I can not refer to the
attributes of this elements ("id" and "id-1") because this attribute names
are not unique.
(the same problem if I use <xsl:for-each...>)

Can somebody give me a hint  how can I solve this problem?
Your help will be deeply appreciated. Thanks.




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