cziegeler 02/04/29 02:31:41
Added: src/java/org/apache/cocoon/components/source/impl
URLFactoryWrapper.java
Log:
Adding wrapper for URLFactories
Revision Changes Path
1.1
xml-cocoon2/src/java/org/apache/cocoon/components/source/impl/URLFactoryWrapper.java
Index: URLFactoryWrapper.java
===================================================================
/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 1999-2002 The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
Alternately, this acknowledgment may appear in the software itself, if
and wherever such third-party acknowledgments normally appear.
4. The names "Apache Cocoon" and "Apache Software Foundation" must not be
used to endorse or promote products derived from this software without
prior written permission. For written permission, please contact
[EMAIL PROTECTED]
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
This software consists of voluntary contributions made by many individuals
on behalf of the Apache Software Foundation and was originally created by
Stefano Mazzocchi <[EMAIL PROTECTED]>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.cocoon.components.source.impl;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.source.SourceFactory;
import org.apache.excalibur.source.impl.URLSource;
import org.apache.avalon.framework.activity.Disposable;
import org.apache.avalon.framework.component.Component;
import org.apache.avalon.framework.component.ComponentException;
import org.apache.avalon.framework.component.ComponentManager;
import org.apache.avalon.framework.component.Composable;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.context.ContextException;
import org.apache.avalon.framework.context.Contextualizable;
import org.apache.avalon.framework.logger.AbstractLoggable;
import org.apache.avalon.framework.logger.Loggable;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.ProcessingException;
import org.apache.cocoon.components.CocoonComponentManager;
import org.apache.cocoon.environment.Environment;
import org.apache.cocoon.util.ClassUtils;
import org.apache.cocoon.components.url.URLFactory;
/**
* This class wraps a Cocoon URLFactory and makes it
* usable within the Avalon Excalibur source resolving architecure.
* The main purpose is to avoid recoding existing factories.
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Carsten Ziegeler</a>
* @version CVS $Id: URLFactoryWrapper.java,v 1.1 2002/04/29 09:31:40 cziegeler Exp $
*/
public final class URLFactoryWrapper
extends AbstractLoggable
implements SourceFactory,
ThreadSafe,
Configurable,
Disposable,
Composable,
Contextualizable
{
/** The <code>ComponentManager</code> */
private ComponentManager manager;
/** The special Source factories */
private URLFactory urlFactory;
/** The context */
private Context context;
/**
* Configure the SourceFactories
*/
public void configure(final Configuration conf)
throws ConfigurationException {
try {
final Configuration factoryConf = conf.getChild("url-factory");
final String className = factoryConf.getAttribute("class");
if (this.getLogger().isDebugEnabled()) {
this.getLogger().debug("Getting the URLFactory " + className);
}
this.urlFactory = (URLFactory)ClassUtils.newInstance(className);
this.init(this.urlFactory, factoryConf);
} catch (ConfigurationException e) {
throw e;
} catch (Exception e) {
getLogger().error("Could not get URLFactory", e);
throw new ConfigurationException("Could not get parameters because: " +
e.getMessage(), e);
}
}
/**
* Get the context
*/
public void contextualize(Context context)
throws ContextException {
this.context = context;
}
/**
* Set the current <code>ComponentManager</code> instance used by this
* <code>Composable</code>.
*/
public void compose(ComponentManager manager)
throws ComponentException {
this.manager = manager;
}
/**
* Dispose
*/
public void dispose() {
if (this.urlFactory != null) {
this.deinit(this.urlFactory);
}
this.urlFactory = null;
}
/**
* Get a <code>Source</code> object.
* @param parameters This is optional.
*/
public Source getSource( String location, Map parameters )
throws MalformedURLException, IOException
{
if( this.getLogger().isDebugEnabled() ) {
this.getLogger().debug( "Creating source object for " + location );
}
final int protocolPos = location.indexOf("://");
final URL url = this.urlFactory.getURL(location.substring(protocolPos+3));
final URLSource source = new org.apache.excalibur.source.impl.URLSource();
source.init(url, parameters);
return source;
}
/**
* Init a url factory
*/
private void init(URLFactory factory,
Configuration config)
throws ContextException, ComponentException, ConfigurationException {
if (factory instanceof Loggable) {
((Loggable) factory).setLogger(getLogger());
}
if (factory instanceof Contextualizable) {
((Contextualizable) factory).contextualize (this.context);
}
if (factory instanceof Composable) {
((Composable) factory).compose(this.manager);
}
if (config != null && factory instanceof Configurable) {
((Configurable) factory).configure(config);
}
}
/**
* Deinit a url factory
*/
private void deinit(URLFactory factory) {
if (factory instanceof Disposable) {
((Disposable) factory).dispose();
}
}
}
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