XSL : XML Transformation - I want to permorm some operations when a particular tag occures else other operation

Hi Experts !!!
   
    Pls Help me out of this prob. What i am trying to do is to transform one xml to another using xsl. my input xml look like
        <root>
              <child>
                     <attrib1>value</attrib1>
                     <attrib1>value</attrib1>
                     <subchild>
                                  <subattrib>value</subattrib>  
                     </subchild>
             </child>
              <child>
                     <attrib1>value</attrib1>
                     <attrib1>value</attrib1>
                    <grandchild>
                              <gattrib>value</gattrib>
                    </grandchild>                    
             </child>
      </root>    

           Here note that inside child tag either subchild can occure or grandchild but not both.
     and in xsl i want to perform something when inside child tag i have subchild tag
& somthing else when i have grandchild inside childtag. & i want to make sure that atleast one exists .

           So could pls suggest me how can i determine in xsl that inside child tag wheather subchild exists or grandchild ??
 
SuyashAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Karl Heinz KremerCommented:
What would you do if you see both subchild and grandchild? What about when none of them exists?  

I would make sure that these conditions are met in the XML file, and not leave it up to the transformation to do the error checking. In this case, you can use something like this:

     <xsl:for-each select="root">
      <xsl:if test="child/subchild">
     ... do something ...
      </xsl:if>
      <xsl:if test="child/grandchild">
     ... do something else ...
      </xsl:if>
      </xsl:for-each>

This would not correctly handle the case where you have both, or where none of them exists.

0
Karl Heinz KremerCommented:
... here is a better solution:

<xsl:for-each select="root/child">
      <xsl:variable name="subchild" select="count(child::subchild)"/>
      <xsl:variable name="grandchild" select="count(child::grandchild)"/>
 
      <xsl:if test="$subchild = 0 and $grandchild >= 1">
... handle the case with one or more grandchildren
      </xsl:if>

    <xsl:if test="$subchild >= 1 and $grandchild = 0">
... handle the case with one or more subchildren
      </xsl:if>

        <xsl:if test="$subchild > 0 and $grandchild > 0">
... handle the case with subchild and granchild
        </xsl:if>

        <xsl:if test="$subchild = 0 and $grandchild = 0">
... handle the case with no subchild and no granchild
        </xsl:if>

      </xsl:for-each>
0
Karl Heinz KremerCommented:
Did this work for you?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Programming

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.