<BugCollection version="1.2.1" sequence="1" timestamp="1190300340528" analysisTimestamp="1190300340512" release="">
Hi ,
I have a sample xml document follows.

<BugCollection>
 <Project filename="DealDecisionCommon">
        <Jar>C:\snapshot_view\AV_DealDecision\AD_Services\ GRD_R2\DealDecisionCommon\build\classes\com\wellsf argo\dealdecision\parallel\PricingLoopResponse.cla ss</Jar>
<AuxClasspathEntry>C:\snapshot_view\AV_DealDecisio n\AD_Services\DealDecisionMain\DealDecision\APP-INF\lib\DealDecisionCommon.jar</AuxClasspathEntry>
 </Project>


  <BugInstance type="MS_SHOULD_BE_FINAL" priority="3" abbrev="MS" category="MALICIOUS_CODE" first="1">
    <Class classname="com.wellsfargo.dealdecision.common.Cons tants">
      <SourceLine classname="com.wellsfargo.dealdecision.common.Cons tants" start="3" end="97" sourcefile="Constants.java" sourcepath="com/wellsfargo/dealdecision/common/Constants.java"/>
    </Class>
    <Field classname="com.wellsfargo.dealdecision.common.Cons tants" name="COMMON" signature="Ljava/lang/String;" isStatic="true">
      <SourceLine classname="com.wellsfargo.dealdecision.common.Cons tants" sourcefile="Constants.java" sourcepath="com/wellsfargo/dealdecision/common/Constants.java"/>
    </Field>
    <SourceLine classname="com.wellsfargo.dealdecision.common.Cons tants" start="70" end="70" startBytecode="2" endBytecode="2" sourcefile="Constants.java" sourcepath="com/wellsfargo/dealdecision/common/Constants.java"/>
  </BugInstance>

  </BugCollection>




now my problem is i have to find out the Project filename on the basis on BugInstance Category and Class classname.

like if BugInstance Category is 'X' and Class classname is 'Y' then this Bug belongs to which project.

[Edited]
You only have one Project and one BugInstance, are there repeated Project elements and do the associated BugInstance elements always come immediately afterwards?

It would be better design to have the BugInstance elements nested within the Project element.

--

Joe (Microsoft MVP - XML)

if BugInstance Category is 'X' and Class classname is 'Y' then this Bug belongs to which project

My guess would be that it belongs to project DealDecisionCommon, because that's the only project there is. But perhaps I'm wrong, perhaps it belongs to project Z.

Please give a better description of your problem and remember that your readers can't guess what your XML means just by looking at a sample of it. You also need to say something about the environment you are working in.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Thanks Michael,
question to your answer is..
each <BugCollection> element can have exact one <project> child element and can have multiple <BugInstance> (as a single project can have many bugs of many type.) and we can have multiple <BugCollection> as well.

you are right if i can change the this xml structure and put <BugInstance> , i will be easy n good design.
but my problem is that this XML format is being generated by some third party tool. and i have to write a xslt to fetch meaningful information from this huge xml file.

You can find the BugInstance using

<xsl:variable name="bug" select="//BugInstance[category="$category" and Class/@classname=$classname]"/>

You can then find which project it belongs to using

select="$bug/preceding-sibling::Project"

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Thanks Michael..