[xsl] see if it is possible

["Long Zhao" <LZhao@xxxxxxxxxxxxxxxx>]

for the following xml:

<A id ="1">
	<BRef Bid="1"/>
	<BRef Bid="2"/>
</A>
<A id ="2">
	<BRef Bid="3"/>
</A>
...
<B id="1" type="short"/>
<B id="2" type="long"/>
<B id="3" type="short"/>
...

with a known id=1 for A, how can I get the count of Bs, whose
type="short" and id equals the Bid in BRef who are the child of A, whose
id =1

I did it by 30 lines xsl code.
can this be done by one or a few line of code? like <xsl:variable
name="count" select="count(......)"/>

Thanks

Long

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