Torsten Curdt a écrit :
>
> While working on a logicsheet I discovered a strange
> behavior. Can anyone verify that the following might
> be a bug:
>
> This is just a stupid example:
> <xsp:logic>
> Iterator i;
> while( i.hasNext() ) {
> Object o = i.next();
> <xsp:element name="iteration">
> <xsp:logic>
> if (o instanceof String) {
> <xsp:attribute name="type">String</xsp:attribute> <---- NOTE THIS
> }
> </xsp:logic>
> <xsp:attribute
>name="value"><xsp:expr>String.valueOf(o)</xsp:expr></xsp:attribute>
> <xsp:expr>String.valueOf(o)</xsp:expr>
> </xsp:element>
> }
> </xsp:logic>
>
> Becomes:
>
> Iterator i;
> while( i.hasNext() ) {
> Object o = i.next();
> xspAttr.addAttribute("","value","value","CDATA",String.valueOf(String.valueOf(o))
>+ "");
> -->this.contentHandler.startElement("","iteration","iteration",xspAttr);
> xspAttr.clear();
> if (o instanceof String) {
> --> xspAttr.addAttribute("","type","type","CDATA","String" + "");
> }
> XSPObjectHelper.xspExpr(contentHandler,String.valueOf(o));
> this.contentHandler.endElement("","iteration","iteration");
> }
>
> As you see the xsp:attribute inside the xsp:logic tag is not part of the desired
>element.
> Did I miss something or is this a bug?
> --
> Torsten
>
This is a semi-bug :)
It's a regression from the Cocoon1 DOM-based XSP engine : in DOM,
attributes are added to an element _after_ it is created and so can
appear anywhere in the element, while in SAX attributes are set up
_before_ startElement().
So in C2, xsp.xsl scans the immediate <xsp:attribute> (1 level deep)
children of an element and inserts the corresponding code before
startElement(). <xsp:attribute> inside <xsp:logic> is therefore ignored
and wrongly added to the next produced element.
I patched xsp.xsl (lastest CVS both C2.0 and C2.1) to allow conditional
attributes like in your example. A side effect is that the corresponding
<xsp:logic> block is executed _before_ the element. So you have to be
careful about variables declarations and values.
--
Sylvain Wallez
Anyware Technologies - http://www.anyware-tech.com
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