/*
============================================================================
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
apache@apache.org.
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 <stefano@apache.org>. For more information on the Apache
Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.cocoon.portal.source;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.avalon.framework.component.ComponentException;
import org.apache.avalon.framework.component.ComponentManager;
import org.apache.avalon.framework.component.ComponentSelector;
import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.ServiceSelector;
import org.apache.avalon.framework.service.Serviceable;
import org.apache.cocoon.CascadingIOException;
import org.apache.cocoon.components.CocoonComponentManager;
import org.apache.cocoon.portal.coplet.CopletInstanceData;
import org.apache.cocoon.portal.coplet.adapter.CopletAdapter;
import org.apache.cocoon.serialization.Serializer;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.source.SourceNotFoundException;
import org.apache.excalibur.source.SourceValidity;
import org.apache.excalibur.xml.sax.XMLizable;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* This is the source implementation of the coplet source
*
* @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
* @author <a href="mailto:volker.schmitt@basf-it-services.com">Volker Schmitt</a>
*
* @version CVS $Id: CopletSource.java,v 1.5 2004/02/02 08:39:09 cziegeler Exp $
*/
public class CopletSource
implements Source, XMLizable, Serviceable {
protected ServiceManager manager;
protected String uri;
protected String copletControllerName;
protected CopletInstanceData copletInstanceData;
/** The used protocol */
protected String scheme;
/* (non-Javadoc)
* @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager)
*/
public void service(ServiceManager manager) throws ServiceException {
this.manager = manager;
}
public CopletSource(String location, String protocol,
CopletInstanceData coplet) {
this.uri = location;
this.scheme = (protocol == null ? "coplet" : protocol);
this.copletInstanceData = coplet;
this.copletControllerName = this.copletInstanceData.getCopletData().getCopletBaseData().getCopletAdapterName();
}
/**
* @see org.apache.excalibur.source.Source#getInputStream()
*/
public InputStream getInputStream() throws IOException, SourceNotFoundException {
ComponentManager sitemapManager = CocoonComponentManager.getSitemapComponentManager();
ComponentSelector serializerSelector = null;
Serializer serializer = null;
try {
serializerSelector = (ComponentSelector) sitemapManager.lookup(Serializer.ROLE+"Selector");
serializer = (Serializer) serializerSelector.select("html");
ByteArrayOutputStream os = new ByteArrayOutputStream();
serializer.setOutputStream(os);
this.toSAX(serializer);
return new ByteArrayInputStream(os.toByteArray());
} catch (SAXException se) {
throw new CascadingIOException("Unable to stream content.", se);
} catch (ComponentException ce) {
throw new CascadingIOException("Unable to get components for serializing.", ce);
} finally {
if ( serializer != null ) {
serializerSelector.release(serializer);
}
sitemapManager.release(serializerSelector);
}
}
/**
* @see org.apache.excalibur.source.Source#getURI()
*/
public String getURI() {
return this.uri;
}
/**
* @see org.apache.excalibur.source.Source#getValidity()
*/
public SourceValidity getValidity() {
return null;
}
/**
* @see org.apache.excalibur.source.Source#refresh()
*/
public void refresh() {
}
/**
* @see org.apache.excalibur.source.Source#getMimeType()
*/
public String getMimeType() {
return null;
}
/**
* @see org.apache.excalibur.source.Source#getContentLength()
*/
public long getContentLength() {
return -1;
}
/**
* @see org.apache.excalibur.source.Source#getLastModified()
*/
public long getLastModified() {
return 0;
}
/**
* @see org.apache.excalibur.xml.sax.XMLizable#toSAX(ContentHandler)
*/
public void toSAX(ContentHandler handler)
throws SAXException {
ServiceSelector copletAdapterSelector = null;
CopletAdapter copletAdapter = null;
try {
copletAdapterSelector = (ServiceSelector)this.manager.lookup(CopletAdapter.ROLE+"Selector");
copletAdapter = (CopletAdapter)copletAdapterSelector.select(this.copletControllerName);
copletAdapter.toSAX(this.copletInstanceData, handler);
} catch (ServiceException ce) {
throw new SAXException("Unable to lookup coplet adaptor or adaptor selector.", ce);
} finally {
if ( null != copletAdapter ) {
copletAdapterSelector.release( copletAdapter );
}
this.manager.release(copletAdapterSelector);
}
}
/**
* @see org.apache.excalibur.source.Source#exists()
*/
public boolean exists() {
return true;
}
/**
* @see org.apache.excalibur.source.Source#getScheme()
*/
public String getScheme() {
return this.scheme;
}
}