确定价值 <xsl:value-of> 上下文项/节点

Question

Newbie question on XML and XPath. I'm debugging some reports produced using an XML transformation, in addition to some associated java and sql functions. Can someone please help me identify how the following value is populated when the associated xslt is applied to the source XML.

I have the following statement in an xslt:

<xsl:if test="$prodType = 'IRS' or $prodType = 'ZCS' or $prodType = 'BASIS'">
  <xsl:value-of select="$root/ISDA"/>
</xsl:if>

The $root variable is defined at the top of the xslt as:

<xsl:variable name="root" select="/*"/>

So, I would expect that I could find an "ISDA" element in the source XML, but that is not the case. I see that we're populating a related variable in our java code (which is what shows up in the report I'm sure), but I'm not able to make the connection between the "ISDA" item in the xslt and the "isda" variable in our java code.

Questions:

1. Is there an Xpath function I'm missing?
2. How can the xslt transformation pick up the "isda" value from java (or possibly SQL)?
3. Shouldn't the "ISDA" item/variable be defined somewhere? I'm unable to locate it (I've searched properties files and associated unix start-up scripts, but not SQL code which I don't have access to).

Any pointers would be appreciated.

The source XML would start with something like:

<SWAP>
 <TradeId>467262IC</TradeId>
 <TradeType>SWAP</TradeType>
 <Env TYPE="EntList" SINGLE="Y">
  <ENV>
  ...

Thanks much,

Al D.

Answer 1

I was able to find the java method used to populate the variable above. There are several transformations executed in sequence by the java method, only one of which uses the xslt and XML source file I commented on above. There is an XML reference source (hiding in a different folder) used in another transformation that held the value I was interested in.

Thanks much,

Al D.

Interestingly, there was no call to the other method I mentioned above that held the similar isda variable, which looks like a little bloat. Made the search a little tougher :^)