RE: How to use xsl:key to get all values?

Wendell,

Thank you for your answer.
The problem is that I can't get expected result "1" "2". I don';t know how
to get it.
I have to use the key() in the project I am working on.

Thanks again!

Di


-----Original Message-----
From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
[mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Wendell Piez
Sent: Thursday, April 12, 2001 1:12 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re:  How to use xsl:key to get all values?


Hello Di,

At 10:45 PM 4/12/01, you wrote:
>Hi,
>
>Based on the following XML and XSL file, I'd like to output "1"  "2". But I
>just get "1" "1". Any body can tell me what is wrong with
><xsl:key>

Nothing's wrong with it, it's working fine.

xsl:key indexes nodes across the entire document. When you write
>                 <xsl:variable name="child" select="key('key-name', 'a1')"
/>

You are setting the variable $child to be *all* the nodes that match the
key with key value 'a1'. In your example, there are two such nodes, and you
always get both of them regardless of the context node (since the value you
give is always 'a1').

When you ask for
>                         <xsl:value-of select="$child/@value" />

You get the value of the node set, which is defined as the string value of
the first node in the node set in document order. That's always the same
node, the one with value='1', because the node set is always the same and
document order doesn't change either.

It's unclear why you are using the key. Why not just:
   <xsl:for-each select="CC">
     <xsl:value-of select="DD/EE/@value" />
   </xsl:for-each>

?

Hope that helps,
Wendell

p.s. what's that namespace declaration xmlns="http://www.w3.org/TR/WD-xsl"
doing for you anyhow?

><?xml version="1.0"?>
><AA>
>         <BB>
>                 <CC>
>                         <DD>
>                                 <EE aField="a1" value="1"/>
>                         </DD>
>                 </CC>
>                 <CC>
>                         <DD>
>                                 <EE aField="a1" value="2"/>
>                         </DD>
>                 </CC>
>         </BB>
></AA>
>
>
><?xml version="1.0"?>
><xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>         xmlns="http://www.w3.org/TR/WD-xsl" version="1.0">
>
>     <xsl:output method="text"/>
>     <xsl:key name="key-name" match="EE" use="@aField" />
>     <xsl:template match="AA/BB">
>         <xsl:for-each select="CC">
>                 <xsl:variable name="child" select="key('key-name', 'a1')"
/>
>                         <xsl:value-of select="$child/@value" />
>           </xsl:for-each>
>     </xsl:template>
>
></xsl:transform>

======================================================================
Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
17 West Jefferson Street                    Direct Phone: 301/315-9635
Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
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