Multiple XSLT files to single XSLT file for 2 different xml files

This is my xml file:

<?xml version="1.0" encoding="windows-1250"?>
<CONTACTS>
    <CONTACT>
        <FirstName>Ford</FirstName>
        <LastName>Pasteur</LastName>
        <EMail>pasteur.ford@yahoo.com</EMail>
    </CONTACT>
    <CONTACT>
        <FirstName>Jack</FirstName>
        <LastName>Sully</LastName>
        <URL>http://www.facebook.com/profile.php?id=1000474277</URL>
    </CONTACT>
    <CONTACT>
        <FirstName>Colombo</FirstName>
        <LastName>Chao</LastName>
        <EMail>chao.colombo@liberto.it</EMail>
    </CONTACT>
</CONTACTS>

I used below XSLT file for my fist version of xml output.

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

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

    <xsl:template match="CONTACT">
        <xsl:copy>
               <Customer-ID>
               <xsl:value-of select="generate-id(.)"/> 
               </Customer-ID>
              <xsl:copy-of select="FirstName|LastName|URL"/>
              <Facebook-ID>
            <xsl:choose>
                <xsl:when test="URL">
                    <xsl:value-of select="substring-after(URL,'?id=')"/>
                </xsl:when>
                <xsl:otherwise>

                </xsl:otherwise>
            </xsl:choose>
        </Facebook-ID>
            <EMAILS>
                <xsl:apply-templates select="EMail"/>
            </EMAILS>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="EMail">
        <EMail> 
            <Type><xsl:value-of select="substring-before(
                    substring-after(.,'@'),
                    '.')"/>
            </Type>
            <Value><xsl:value-of select="."/></Value>
        </EMail>
    </xsl:template>

</xsl:stylesheet>

My first version of xml output from the above XSLT file:

<?xml version="1.0" encoding="windows-1250"?>
<CONTACTS>
    <CONTACT>
    <Customer-ID>N65539</Customer-ID>
    <FirstName>Ford</FirstName>
    <LastName>Pasteur</LastName>
    <EMAILS>
    <EMail>
    <Type>yahoo</Type>
    <Value>pasteur.ford@yahoo.com</Value>
    </EMail>
    </EMAILS>
    </CONTACT>
    <CONTACT>
    <Customer-ID>N65546</Customer-ID>
     <FirstName>Jack</FirstName>
     <LastName>Sully</LastName>
     <URL>http://www.facebook.com/profile.php?id=1000474277</URL>
    <Facebook-ID>1000474277</Facebook-ID>
    <EMAILS/>
    </CONTACT>
    <CONTACT>
    <Customer-ID>N65553</Customer-ID>
    <FirstName>Colombo</FirstName>
    <LastName>Chao</LastName>
    <EMAILS>
    <EMail>
    <Type>liberto</Type>
    <Value>chao.colombo@liberto.it</Value>
    </EMail>
    </EMAILS>
    </CONTACT>
</CONTACTS>

This is my second XSLT file:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
    <xsl:copy>
        <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="CONTACT">
<xsl:copy>
    <Customer-ID>
        <xsl:value-of select="Customer-ID"/>
    </Customer-ID>

    <FirstName>
        <xsl:value-of select="FirstName"/>
    </FirstName>

    <LastName>
        <xsl:value-of select="LastName"/>
    </LastName>

    <gmail>
            <xsl:value-of select="EMAILS/EMail[Type='gmail']/Value"/>
    </gmail>

    <yahoo>
            <xsl:value-of select="EMAILS/EMail[Type='yahoo']/Value"/>
    </yahoo>

    <liberto>
            <xsl:value-of select="EMAILS/EMail[Type='liberto']/Value"/>
    </liberto>

    <URL>
            <xsl:value-of select="URL"/>
    </URL>

    <Facebook-ID>
             <xsl:value-of select="Facebook-ID"/>
    </Facebook-ID>

      </xsl:copy>
</xsl:template>

This is my final xml output from the 2nd XSLT file:

<?xml version="1.0" encoding="windows-1250"?>
<CONTACTS>

    <CONTACT>
    <Customer-ID>N65539</Customer-ID>
    <FirstName>Ford</FirstName>
    <LastName>Pasteur</LastName>
    <gmail/>
    <yahoo>pasteur.ford@yahoo.com</yahoo>
    <liberto/>
    <URL/>
    <Facebook-ID/>
    </CONTACT>

    <CONTACT>
    <Customer-ID>N65546</Customer-ID>
    <FirstName>Jack</FirstName>
    <LastName>Sully</LastName>
    <gmail/>
    <yahoo/>
    <liberto/>
    <URL>http://www.facebook.com/profile.php?id=1000474277</URL>
    <Facebook-ID>1000474277&l开发者_高级运维t;/Facebook-ID>
    </CONTACT>

    <CONTACT>
    <Customer-ID>N65553</Customer-ID>
    <FirstName>Colombo</FirstName>
    <LastName>Chao</LastName>
    <gmail/>
    <yahoo/>
    <liberto>chao.colombo@liberto.it</liberto>
    <URL/>
    <Facebook-ID/>
    </CONTACT>
</CONTACTS>

How do I merge these two XSLT files as a single XSLT file to get my final XML output.

how do i proceed with this? because there are two different xml files of similar type.

I'm using Eclipse Hellios run as -->XSL transformation to see the output.

Performing a chain of transformations is used quite often in XSLT applications, though doing this entirely in XSLT 1.0 requires the use of the vendor-specific xxx:node-set() function. In XSLT 2.0 no such extension is needed as the infamous RTF datatype is eliminated there.

Here is an example (too-simple to be meaningful, but illustrating completely how this is done):

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:ext="http://exslt.org/common">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

 <xsl:template match="/">
   <xsl:variable name="vrtfPass1">
    <xsl:apply-templates select="/*/*"/>
   </xsl:variable>

   <xsl:variable name="vPass1"
        select="ext:node-set($vrtfPass1)"/>

   <xsl:apply-templates mode="pass2"
        select="$vPass1/*"/>
 </xsl:template>

 <xsl:template match="num[. mod 2 = 1]">
  <xsl:copy-of select="."/>
 </xsl:template>

 <xsl:template match="num" mode="pass2">
  <xsl:copy>
    <xsl:value-of select=". *2"/>
  </xsl:copy>
 </xsl:template>
</xsl:stylesheet>

when this transformation is applied on the following XML document:

<nums>
  <num>01</num>
  <num>02</num>
  <num>03</num>
  <num>04</num>
  <num>05</num>
  <num>06</num>
  <num>07</num>
  <num>08</num>
  <num>09</num>
  <num>10</num>
</nums>

the wanted, correct result is produced:

<num>2</num>
<num>6</num>
<num>10</num>
<num>14</num>
<num>18</num>

Explanation:

1. In the first step the XML document is transformed and the result is defined as the value of the variable $vrtfPass1. This copies only the num elements that have odd value (not even).

2. The $vrtfPass1 variable, being of type RTF, is not directly usable for XPath expressions so we convert it to a normal tree, using the EXSLT (implemented by most XSLT 1.0 processors) function ext:node-set and defining another variable -- $vPass1 whose value is this tree.

3. We now perform the second transformation in our chain of transformations -- on the result of the first transformation, that is kept as the value of the variable $vPass1. Not to mess with the first-pass template, we specify that the new processing should be in a named mode, called "pass2". In this mode the value of any num element is multiplied by two.

XSLT 2.0 solution (no RTFs):

<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:xs="http://www.w3.org/2001/XMLSchema">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

 <xsl:template match="/">
  <xsl:variable name="vPass1" >
   <xsl:apply-templates select="/*/*"/>
  </xsl:variable>
   <xsl:apply-templates mode="pass2"
        select="$vPass1/*"/>
 </xsl:template>

 <xsl:template match="num[. mod 2 = 1]">
  <xsl:copy-of select="."/>
 </xsl:template>

 <xsl:template match="num" mode="pass2">
  <xsl:copy>
    <xsl:value-of select=". *2"/>
  </xsl:copy>
 </xsl:template>
</xsl:stylesheet>

You can use xsl:import to reuse your XSLT files and then use the technique explained in the @Dimitre's answer as follows:

<xsl:stylesheet version="1.0" 
    xmlns:exslt="http://exslt.org/common"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    exclude-result-prefixes="exslt">

    <xsl:import href="phase1.xsl"/>
    <xsl:import href="phase2.xsl"/>

    <xsl:output method="xml" indent="yes"/>
    <xsl:strip-space elements="*"/>

    <xsl:template match="/">
        <xsl:variable name="intermediate">
            <xsl:apply-templates select="/CONTACTS/CONTACT" mode="phase1"/>
        </xsl:variable>
           <CONTACTS>
        <xsl:apply-templates select="exslt:node-set($intermediate)" 
         mode="phase2"/>
           </CONTACTS>
    </xsl:template>

</xsl:stylesheet>

Where:

• phase1.xsl and phase2.xsl are your two xslt transforms

• transforms are slightly modified adding a mode to each template. For instance, phase1.xsl transform:

  <xsl:template match="node()|@*">
      <xsl:copy>
          <xsl:apply-templates select="node()|@*" mode="phase1"/>
      </xsl:copy>
  </xsl:template>
  
  <xsl:template match="CONTACT" mode="phase1">
      <xsl:copy>
          <Customer-ID>
              <xsl:value-of select="generate-id(.)"/> 
          </Customer-ID>
          <xsl:copy-of select="FirstName|LastName|URL"/>
          <Facebook-ID>
              <xsl:choose>
                  <xsl:when test="URL">
                      <xsl:value-of select="substring-after(URL,'?id=')"/>
                  </xsl:when>
                  <xsl:otherwise>
  
                  </xsl:otherwise>
              </xsl:choose>
          </Facebook-ID>
          <EMAILS>
              <xsl:apply-templates select="EMail" mode="phase1"/>
          </EMAILS>
      </xsl:copy>
  </xsl:template>
  
  <xsl:template match="EMail" mode="phase1">
      <EMail> 
          <Type><xsl:value-of select="substring-before(
                  substring-after(.,'@'),
                  '.')"/>
          </Type>
          <Value><xsl:value-of select="."/></Value>
      </EMail>
  </xsl:template>
  

For phase2.xsl you will use `mode="phase2" obviously.

When the above conditions are satisfied, and the merging transform is applied to your first input XML, the following output is obtained:

<CONTACTS>
   <CONTACT>
      <Customer-ID>d0e2</Customer-ID>
      <FirstName>Ford</FirstName>
      <LastName>Pasteur</LastName>
      <gmail/>
      <yahoo>pasteur.ford@yahoo.com</yahoo>
      <liberto/>
      <URL/>
      <Facebook-ID/>
   </CONTACT>
   <CONTACT>
      <Customer-ID>d0e9</Customer-ID>
      <FirstName>Jack</FirstName>
      <LastName>Sully</LastName>
      <gmail/>
      <yahoo/>
      <liberto/>
      <URL>http://www.facebook.com/profile.php?id=1000474277</URL>
      <Facebook-ID>1000474277</Facebook-ID>
   </CONTACT>
   <CONTACT>
      <Customer-ID>d0e16</Customer-ID>
      <FirstName>Colombo</FirstName>
      <LastName>Chao</LastName>
      <gmail/>
      <yahoo/>
      <liberto>chao.colombo@liberto.it</liberto>
      <URL/>
      <Facebook-ID/>
   </CONTACT>
</CONTACTS>