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Vexing problem processing a list of error messages

From: "hoosie" <hoosiemama@-----.--->
To: NULL
Date: 10/5/2006 10:11:00 AM


I am trying to process a list of error messages of two different types.
 They arrive as such:

<message>
      <text>A:SOMEERROR</text>
      <text>A:SOMEOTHER</text>
      <text>B:ANOTHER</text>
      <text>A:ANDANOTHER</text>
</message>

The error type is denoted by a code like A or B followed by a colon and
some other descriptor.  There can only be 1 type B error, and what I
need to do in pseudocode would be:

{
If there are any A errors, draw a yellow box
     for each A error, write the text into the box
end if

If B error, write a bunch of static HTML
}

I am quite stumped as to how to do this, as it involves iterating
through the list once before to find out if there are any type A errors
(ie draw the box), and I am pretty new to XSL, and I don't know whether
to use variables, keys, templates, etc.  Any help GREATLY appreciated!

Thanks, Ian

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Vexing problem processing a list of error messages