How to create the alterable length XML message in WLI workflow?

Question

When I do some development in WLI2.1 workflow, I meet a problem. I need a XML
message to invoke this workflow, and then tailor this XML message and create a
new XML message to send to a certain destination.
Now the question is: The XML message is alterable length, like following:
<ROOT>
<tag1>
<tag2>...</tag2>
<tag3>...</tag3>
</tag1>
<tag1>
<tag2>...</tag2>
<tag3>...</tag3>
</tag1>
<tag1>
<tag2>...</tag2>
<tag3>...</tag3>
</tag1>
</ROOT>
The number of <tag1> is alterable. But I don't know how to create the new XML
message, which also includes the same structure of input XML message, in workflow
"Post external XML Event" action?
I try to use XPath to get the value of each tag, but when I use the following
XPath expression:
XPath ("/ROOT/tag1/tag2/text()")
I can only get the reference of weblogic.apache.xpath.axes.LocPathIterator.
And I also don't know how to define the XML document structure to implement this
kind of alterable length XML message.
Your comments are highly appreciated!

Answer 1

You will need to use substr to restrict the length of the strings returned by extract(). I assume that either the document in non schema based or the attributes referenced are not defined with maxLength restriction in the XML Schema