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Date: Wed, 09 Jun 2004 07:30:50 +0200
From: Leszek Gawron <lgawron@mobilebox.pl>
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To: dev@cocoon.apache.org
Subject: Re: REQ: An "escapeXml" attribute in JXT macro/script output
References: <20040608230938.4692.qmail@web52610.mail.yahoo.com>
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Terry Brick wrote:
> Hello,
> This request is carried over from the users list regarding introducing XML from a
> variable/component into the JXT output stream.
> For example, let's say I have Java bean with a String property that holds XML text.  If, in my
> template, I do something like...
> ${MyBean.XML}
> ... Then all of the XML characters are escaped.
> For example,
> <para>
> ..becomes..
> &lt;para&gt;
> 
> I would think that for most Cocoon users, this is undesirable behavior most of the time.
> The current workaround is to have the bean property return a DOM Document instead of a String. 
> However, in many cases, other than to accomodate this workaround, I have no other need to create a
> DOM document within my Java component.... so it seems like there could be some unecessary overhead
> associated with doing that.  I guess that depends on how Cocoon handles the doc... maybe it's a
> wash.
> Anyway, an escapeXml="true/false" attribute on the JX output tags (similar to JSTL) would
> certainly be handy IMO.
> 
> Thanks!
Solution:

>> function stringToSAX( str, consumer, ignoreRootElement ) {
>> 	var is = new Packages.org.xml.sax.InputSource( new java.io.StringReader( str ) );
>> 	var ignore = ( ignoreRootElement == "true" );
>> 	var parser = null;
>> 	var includeConsumer = new org.apache.cocoon.xml.IncludeXMLConsumer( consumer, consumer );
>> 	includeConsumer.setIgnoreRootElement( true );
>> 	try {	
>> 		parser = cocoon.getComponent( Packages.org.apache.excalibur.xml.sax.SAXParser.ROLE );
>> 		parser.parse( is, includeConsumer );	
>> 	} finally {
>> 		if ( parser != null ) cocoon.releaseComponent( parser );
>> 	}
>> }
put it into session by
cocoon.session.setAttribute( "saxer", stringToSAX  );

implement a jx:macro:
>> 	<jx:macro name="xmlize">
>> 		<jx:parameter name="value"/>
>> 		<jx:parameter name="ignoreRoot" default="false"/>
>> 		<jx:set var="ignored" value="${cocoon.session.stringToSAX( value, cocoon.consumer, ignoreRoot )}"/>
>> 	</jx:macro>
> 

use it like this:

<xmlize value="${xmlVal}" ignoreRoot="true"/>

and you're done.
	LG