Java Objects in Result trees

  • Gunther Schadow

    Gunther Schadow - 2004-11-02

    Hi Michael,

    would it be possible to allow Java Objects as value in Result trees? I can have such Objects as values of variables or as members of sequences, but when I put them into an XML attribute, it gets converted to a string. However, I'd like to have those Objects in intermediate XML structures to process. Of course I understand that those Objects couldn't be output as Objects in the final result documents, but in intermediate documents they could be used.


    <xsl:variable name="system-io" xmlns:sys="java:java.lang.System">
    <channel name="input" value="{sys:in()}"/>
    <channel name="output" value="{sys:out()}"/>
    <channel name="error" value="{sys:err()}"/>

    <xsl:variable name="blurb" xmlns:ps="" select="ps:println($system-io[@name eq 'input],'Hello World')"/>


    • Michael Kay

      Michael Kay - 2004-11-02

      The tree construction model in both XSLT and XQuery is that you can only get a typed value for an element or attribute by first constructing the string value and then putting it through validation. So I think your idea would significantly upset this model.

      As it happens, Saxon currently always stores the string value or a node plus the type annotation, rather than storing the typed value. That could be changed (and might change), but it doesn't alter the construction semantics.

      Michael Kay


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