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RE: [xsl] filtering descendent text nodes

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> That was very informative. Thanks. I have a set of
> tags of which some are whitespace text nodes.

We'll be talking at cross-purposes unless you use the correct terminology. A
tag is either a start tag like <p> or an end tag like </p> (or an empty
element tag like <br/>). A tag is not a node, and it is certainly not a text
node.

 I need
> to filter out nodes which are not whitespace text
> nodes (to be more contedtual i need to know how many
> nodes has meaningful data associated and how many are
> whitespace text nodes). Is there any way of doing
> this. Please find below an example situation in the
> context of my query.
> <Employee>
>    <empid>eid100</empid>
>    <proj-id>pid1</proj-id>
> </Employee>
> <Employee>
>    <empid>eid101</empid>
>    <proj-id></proj-id>
> </Employee>
> <Employee>
>    <empid>eid102</empid>
>    <proj-id>pid2</proj-id>
> </Employee>

I think you are interested in the element <proj-id></proj-id>. This element
does not contain a whitespace text node; it contains no text node at all.
You can select all the Employees that have a <proj-id>, where the value of
the proj-id is the empty string, using the expression

//Employee[proj-id='']
>
> From the above list how can i filter out employees who
> doesnt have a project id assigned. If i try the
> strip-space tag how do i compare for the occurance of
> null.
>
There's no such thing as null in the XPath data model, so I don't know
exactly what you mean. xsl:strip-space causes the removal of text nodes
containing only whitespace characters, for example the text node between the
<empid> element and the <proj-id> element.

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx


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