Hello NG,

I try to apply the following template

<xsl:template match="objectgroup[@objid != '']">
<xsl:copy>
<xsl:apply-templates select="*|@*"/>
<xsl:variable name="object" select="."/>
<xsl:for-each select="//plugins/plugin">
<plugin pid="{./@pid}"
href="{//pluginobjectlist[@pid = ./@pid]/
objectgroup[@objid = $object/objid]/@href}"/>
</xsl:for-each>
</xsl:copy>
</xsl:template>

to the follwoing xml-file

<symbol>
<objectgroup objid='id1'>
<!-- some elements here -->
</objectgroup>
<plugins>
<plugin pid="plug1"/>
<plugin pid="plug2"/>
<plugin pid="plug3"/>
</plugins>
<plugins>
<pluginobjectlist pid="plug1">
<objectgroup objid="obj1" href="url-p1-o1"/>
<!-- repeats for other objects -->
</pluginobjectlist>
<pluginobjectlist pid="plug2">
<objectgroup objid="obj1" href="url-p2-o1"/>
<!-- repeats for other objects -->
</pluginobjectlist>
<!-- repeats for remaining plugins -->
</plugins>
</symbol>

and I get the following result

<symbol>
<objectgroup objid='id1'>
<!-- some elements here -->
<plugin pid="plug1" href="url-p2-o1"/>
<plugin pid="plug2" href="url-p2-o1"/>
<plugin pid="plug3" href="url-p2-o1"/>
</objectgroup>
<!-- remaining templates remove plugin-elements -->
</symbol>

I see always the same url, so something in the xsl:for-each must
be wrong - but I can't see the problem.

Please give me a hint if you have an idea.

Thanx in advance,
Gerald

href="{//pluginobjectlist[@pid = ./@pid]/
objectgroup[@objid = $object/objid]/@href}"/>


@pid (always) means the same as ./@pid so the first filter is always
true if there is a pid attribute. as it is[@pid =@pid] which is [@pid]

In your posted code objectgroup had an objid attribite not an objid
element child so $object/objid is the empty set.



David

David Carlisle wrote:[color=blue]
> href="{//pluginobjectlist[@pid = ./@pid]/
> objectgroup[@objid = $object/objid]/@href}"/>
>
>
> @pid (always) means the same as ./@pid so the first filter is always
> true if there is a pid attribute. as it is[@pid =@pid] which is [@pid]
>[/color]

I thought that the left part of the '='-part denotes the attribute
name to compare. How can I select the pluginobjectlist which pid-
attribute has the same value as the currend pid-attribut in the
xsl:for-each loop?
[color=blue]
> In your posted code objectgroup had an objid attribite not an objid
> element child so $object/objid is the empty set.[/color]

Thank you for pointing this out, but fortunately it is a typo only.
The final is (except the open point from above):

href="{//pluginobjectlist[???]/
objectgroup[@objid = $object/@objid]/@href">/


Gerald

Gerald Aichholzer <gary@sbox.tugraz.at> writes:
[color=blue]
> David Carlisle wrote:[color=green]
> > href="{//pluginobjectlist[@pid = ./@pid]/
> > objectgroup[@objid = $object/objid]/@href}"/>
> >
> >
> > @pid (always) means the same as ./@pid so the first filter is always
> > true if there is a pid attribute. as it is[@pid =@pid] which is [@pid]
> >[/color]
>
> I thought that the left part of the '='-part denotes the attribute
> name to compare.[/color]

Both sides of the = are evaluated the same way, as arbitrary XPath
expressions, then their values are compared for equality.
If you start a node-set valued XPath with something other than / or
.. then it's a relative XPath and taken relative to the current node
so @pid is _defined_ as meaning the same thing as ./@pid.

[color=blue]
> How can I select the pluginobjectlist which pid-
> attribute has the same value as the currend pid-attribut in the
> xsl:for-each loop?[/color]
use a variable to hold the current node or equivalently the[color=blue]
> current()/functuion[/color]
so something like
@pid = current()/@pid
or
@pid = $object/@pid
(I forget the exact structure of your input)
[color=blue]
>[color=green]
> > In your posted code objectgroup had an objid attribite not an objid
> > element child so $object/objid is the empty set.[/color]
>
> Thank you for pointing this out, but fortunately it is a typo only.
> The final is (except the open point from above):
>
> href="{//pluginobjectlist[???]/
> objectgroup[@objid = $object/@objid]/@href">/
>
>
> Gerald[/color]

Hello David,

David Carlisle wrote:[color=blue]
> Gerald Aichholzer <gary@sbox.tugraz.at> writes:
>
>[color=green]
>>David Carlisle wrote:
>>[color=darkred]
>>> href="{//pluginobjectlist[@pid = ./@pid]/
>>> objectgroup[@objid = $object/objid]/@href}"/>
>>>
>>>
>>> [about @pid is the same as ./@pid]
>>>[/color]
>>
>> How can I select the pluginobjectlist which pid-
>>attribute has the same value as the currend pid-attribut in the
>>xsl:for-each loop?[/color]
>
> use a variable to hold the current node or equivalently the
>[color=green]
>>current()/functuion[/color]
>
> so something like
> @pid = current()/@pid
> or
> @pid = $object/@pid
> (I forget the exact structure of your input)
>[/color]

thank you, but I think I have given an incorrect example
by mistake (which doesn't represent the real problem).
My xml-file looks like this:

<symbol>
<objectgroup objid="abc">
<plugin pid="plugin1" href="..."/>
<plugin pid="plugin3" href="..."/>
</objectgroup>
<objectgroup objid="def">
<!-- ... -->
</objectgroup>
<!-- even more objectgroup elements -->
<plugins>
<plugin pid="plugin1"><desc>...</desc></plugin>
<plugin pid="plugin2"><desc>...</desc></plugin>
<plugin pid="plugin3"><desc>...</desc></plugin>
</plugins>
</symbol>

For each objectgroup/plugin element I'd like to access the
corresponding plugins/plugin element:

<xsl:template match="objectgroup">
<!-- do something -->
<xsl:for-each select="./plugin">
<xsl:value-of select="/symbol/plugins/plugin[???]/desc"/>
^^^
</xsl:for-each> |
<!-- do something --> |
</xsl:template> |
|
+---------------------------------------------------+
v

How can I select /symbol/plugins/plugin haven the same pid
as the current pid in the xsl:for-each loop?

thanks in advance,
Gerald

Hello NG,

I have a XML file looking like this:

<symbol>
<objectgroup objid="abc">
<plugin pid="plugin1" href="..."/>
<plugin pid="plugin3" href="..."/>
</objectgroup>
<objectgroup objid="def">
<!-- ... -->
</objectgroup>
<!-- even more objectgroup elements -->
<plugins>
<plugin pid="plugin1"><desc>...</desc></plugin>
<plugin pid="plugin2"><desc>...</desc></plugin>
<plugin pid="plugin3"><desc>...</desc></plugin>
</plugins>
</symbol>

For each objectgroup/plugin element I'd like to access the
corresponding plugins/plugin element using the following
template:

<xsl:template match="objectgroup">
<!-- do something -->
<xsl:for-each select="./plugin">
<xsl:value-of select="/symbol/plugins/plugin[???]/desc"/>
^^^
</xsl:for-each> |
<!-- do something --> |
</xsl:template> |
|
+---------------------------------------------------+
v

How can I select /symbol/plugins/plugin haven the same pid
as the current pid in the xsl:for-each loop?

thanks in advance,
Gerald

didn't we just do this?

<xsl:template match="objectgroup">
<!-- do something -->
<xsl:for-each select="plugin">
<xsl:value-of select="/symbol/plugins/plugin[@pid=current()/@pid]/desc"/>

</xsl:for-each>
<!-- do something -->
</xsl:template>


David

David Carlisle wrote:[color=blue]
> didn't we just do this?
>
> <xsl:template match="objectgroup">
> <!-- do something -->
> <xsl:for-each select="plugin">
> <xsl:value-of select="/symbol/plugins/plugin[@pid=current()/@pid]/desc"/>
>
> </xsl:for-each>
> <!-- do something -->
> </xsl:template>
>[/color]

Hello David,

I made it work just a few minutes ago - I think I have misinterpreted
your first answer or I haven't seen the wood from the trees.

thanx,
Gerald

Hello David,

David Carlisle wrote:[color=blue]
>
> <xsl:template match="objectgroup">
> <!-- do something -->
> <xsl:for-each select="plugin">
> <xsl:value-of select="/symbol/plugins/plugin[@pid=current()/@pid]/desc"/>[/color]
^^^^^^^^^^^^^^^^^[color=blue]
>
> </xsl:for-each>
> <!-- do something -->
> </xsl:template>
>[/color]

I think I have some problems unterstanding XPath :/

In the above context (see ^^^) there are possibly three
different pid-attributes:

1) pid attribute of the objectgroup (xsl:template match)
which I have to access defining a xsl:variable outside
of the loop (is there also a way without a variable?)

2) pid attribute of xsl:for-each's current element
which I have to access with @pid (or ./@pid)

3) pid attribute of xsl:value-of's element which I have
to access using current()/@pid


Is my above understanding correct?

thanx for your help,
Gerald