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Date: Mon, 20 Mar 2006 05:35:05 +0000 (GMT)
From: "Geoffrey Begley (JIRA)" <commons-dev@jakarta.apache.org>
To: commons-dev@jakarta.apache.org
Subject: [jira] Created: (JELLY-227) JellyContext Mangles rootURL in
 imported scripts from other directories
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JellyContext Mangles rootURL in imported scripts from other directories
-----------------------------------------------------------------------

         Key: JELLY-227
         URL: http://issues.apache.org/jira/browse/JELLY-227
     Project: jelly
        Type: Improvement
    Reporter: Geoffrey Begley


When using the importTag and including scripts from other directories, The root URL seems to following the path of the included directory.
Cause /x/y/a.jellyxml which imports /w/y/header.jx to fail if header.jx tries to import anything, it's URLs are rooted incorrectly. One would expect them to root at / but instead then root at /w/y/header.jx

I used the following JellyContext extension to get around the problem:

package com.myco.jelly

import org.apache.commons.jelly.JellyContext;
import org.apache.commons.jelly.XMLOutput;
import org.apache.commons.jelly.JellyException;
import org.apache.commons.jelly.Script;
import org.apache.log4j.Logger;
import org.xml.sax.InputSource;

import java.net.URL;
import java.net.MalformedURLException;

/**
 * Extension that Causes root to remain at the application context root 
*/
public class RootedJellyContext extends JellyContext {

    public RootedJellyContext() {
    }

    public RootedJellyContext(URL rootURL) {
        super(rootURL);
    }

    public RootedJellyContext(URL rootURL, URL currentURL) {
        super(rootURL, currentURL);
    }

    public RootedJellyContext(JellyContext parent) {
        super(parent);
    }

    public RootedJellyContext(JellyContext parentJellyContext, URL currentURL) {
        super(parentJellyContext, currentURL);
    }

    public RootedJellyContext(JellyContext parentJellyContext, URL rootURL, URL currentURL) {
        super(parentJellyContext, rootURL, currentURL);
    }

    /**
     * Parses the script from the given InputSource then compiles it and runs it.
     *
     * @return the new child context that was used to run the script
     */
    public JellyContext runScript(InputSource source, XMLOutput output,
                                  boolean export, boolean inherit) throws JellyException {
        Script script = compileScript(source);

        URL newJellyContextURL = null;
        try {
            newJellyContextURL = getJellyContextURL(source);
        } catch (MalformedURLException e) {
            throw new JellyException(e.toString());
        }

        JellyContext newJellyContext = newJellyContext();

        // ------------------ CHANGE ---------------------------
        newJellyContext.setRootURL( getRootURL() ); 
        // ------------------ CHANGE ---------------------------

        newJellyContext.setCurrentURL( newJellyContextURL );
        newJellyContext.setExport( export );
        newJellyContext.setInherit( inherit );

        if ( inherit ) {
            // use the same variable scopes
            newJellyContext.setVariables( this.getVariables() );
        }

        if (log.isDebugEnabled() ) {
            log.debug( "About to run script: " + source.getSystemId() );
            log.debug( "root context URL: " + newJellyContext.getRootURL() );
            log.debug( "current context URL: " + newJellyContext.getCurrentURL() );
        }

        script.run(newJellyContext, output);

        return newJellyContext;
    }

    /**
     * Factory method to create a new child of this context
     */
    protected JellyContext createChildContext() {
        return new RootedJellyContext(this);
    }

    private Logger log = Logger.getLogger(getClass());
}


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