Re: [xsl] grouping after filtering (follow on question: about meucheun method)

[林 子芯 <minikittygo@xxxxxxxxxxx>]

Hi Joerg,
thanks for your reply. I have try the solution you've provided however, it 
seems to give me the same results as before (i.e. some data can not be 
display)... i had a look at the source file, it did not displays some 
result because the processor (i am using xalan-c 1.3) already spotted the 
data beforehand. 
(actually i had just spotted a mistake in my example ... i was suppose to 
group the type only, given that author='author2'. So my key should be 
<xsl:key name="books" match="book" use="type"/>
)

in my example 
...
> <book>
> <author>author1</author>
> <name>x box</name>
> <type>sc-fi</type>
> </book>
> <book>
> <author>author2</author>
> <name>elf story</name>
> <type>adventure</type>
> </book>
> <book>
> <author>author1</author>
> <name>the return of Dr who</name>
> <type>sc-fi</type>
> </book>
> <book>
> <author>author2</author>
> <name>something2</name>
> <type>sc-fi</type>
> </book>
> ...

say i was looking for all the type of books written by aurthor2, using the 
following call the processor will skip the type which it sees before (e.g. 
sc-fi will not be shown as it already appears previously for author1)

<xsl:apply-template select="book[author='author2']][generate-id() = 
generate-id(key('books', type))]"/>

therefore i was wondering is there a way to overcome this? (as you 
suggested) i though by filtering the data first before using the mucheun 
method (via multiple predicate) could solve the problem, however, it seems 
it doesn't like. please could you give me some advise over this?

Many thanks

Regards 
Kit

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