Re: Jelly Question/Issue - XML with namespace in template??

Paul Libbrecht Tue, 21 Jul 2009 20:16:32 -0700

Jason,

I still don't understand your point.

If you want this kind of "arbitrary text generation" than you cannot avoid leaving the cute world of SAX pipelines which is where jelly lives. You can easily use the disablement of output escaping if you wish but this can only happen at the final stage.


paul


Le 17-juil.-09 à 04:06, Jason Weinstein a écrit :

Thank you for your response.

I will start with the second example to make my concerns more clear.

I would like to generate this output:

output:
   <hello:bye> hi </hello:bye>


I had hoped something like this would work:

<j:jelly trim="false" xmlns:j="jelly:core" xmlns:x="jelly:xml">
   <hello:bye> hi </hello:bye>
</j:jelly>

However it gives the error below:
org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound.
My concern is that for a general templating mechanism which is my use case i must be able to generate any text and easily. In this case the xml generated is not well formed, but i would still like to be able to generate it.
This template actually produces the right code

<j:jelly trim="false" xmlns:j="jelly:core" xmlns:x="jelly:xml">
   &lt;hello:bye&gt; hi &lt;/hello:bye&gt;
</j:jelly>
But assume the xml to be generated is quite complex then this type of xml escaped template becomes very complex to manage.
I would prefer if it just ignored the <hello:bye> tag and did not try to parse it. Perhaps this is a drawback of this toolkit or perhaps there is a way to work around it?
Full error:
Jul 17, 2009 12:51:48 AM org.apache.commons.jelly.parser.XMLParser fatalError SEVERE: Parse Fatal Error at line 2 column 16: The prefix "hello" for element "hello:bye" is not bound. org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org .apache .xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source) at org .apache .xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl $FragmentContentDispatcher.dispatch(Unknown Source) at org .apache .xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
   at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
   at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
   at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
org.apache.commons.jelly.JellyException: null:-1:-1: <null> null:-1:-1: <null> Could not parse Jelly script
   at SlotUtil.runScript(SlotUtil.java:46)
   at Main.main(Main.java:25)
Caused by: org.apache.commons.jelly.JellyException: null:-1:-1: <null> Could not parse Jelly script at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 547) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   ... 1 more
Caused by: org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543)
   ... 5 more
Root cause
org.apache.commons.jelly.JellyException: null:-1:-1: <null> Could not parse Jelly script at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 547) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
Caused by: org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543)
   ... 5 more
Root cause
org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
org.apache.commons.jelly.JellyException: null:-1:-1: <null> Could not parse Jelly script at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 547) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
Caused by: org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543)
   ... 5 more
Root cause
org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
org.xml.sax.SAXParseException: The prefix "hello" for element "hello:bye" is not bound. at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.apache.commons.jelly.parser.XMLParser.parse(XMLParser.java: 254) at org .apache.commons.jelly.JellyContext.compileScript(JellyContext.java: 543) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:678) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:668) at org.apache.commons.jelly.JellyContext.runScript(JellyContext.java:621)
   at SlotUtil.runScript(SlotUtil.java:39)
   at Main.main(Main.java:25)
Root cause
Root cause
From: p...@activemath.org
To: user@commons.apache.org
Subject: Re: Jelly Question/Issue - XML with namespace in template??
Date: Fri, 17 Jul 2009 00:18:38 -0400

Jason,


Le 16-juil.-09 à 22:45, Jason Weinstein a écrit :
How does Jelly handle xml in the template??
as is
Is it a good option for content with a lot of xml namespaces not
referencing taglibs.
definitely.
What about if validation is turned off?
jelly has forgotten schemas since long... it's quite hard to have
schemas with glues such as jelly.

I don't understand the below snippet though, it seems to mix java and
jelly... the java code here would just be considered text.
The fact that <hello:bye> fails at parsing is a normal xmlns story:
the hello prefix needs to be associated with a URI.
<?xml version="1.0"?>
<j:jelly trim="false" xmlns:j="jelly:core" xmlns:x="jelly:xml">
import org.apache.commons.jelly.JellyTagException;
import org.apache.commons.jelly.TagSupport;
import org.apache.commons.jelly.XMLOutput;

public class ${className} extends TagSupport {
  public void doTag(XMLOutput output) throws JellyTagException {
      // <hello:bye> hi </hello:bye> // THIS BIT FAILS IN PARSING
      getBody().run(context, output);
  }
}
</j:jelly>
How would i output something simple like this?
<j:jelly trim="false" xmlns:j="jelly:core" xmlns:x="jelly:xml">
   <hello:bye> hi </hello:bye>
</j:jelly>
Output with j:jelly? At least with x:element you can, maybe there's a
cleaner way.
output
  <hello:bye> hi </hello:bye>
sounds like it's right to me.

paul
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Re: Jelly Question/Issue - XML with namespace in template??

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