/*
* $Id: FactoryRule.java,v 1.6 2006/05/26 01:10:39 rlubke Exp $
*/
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* https://javaserverfaces.dev.java.net/CDDL.html or
* legal/CDDLv1.0.txt.
* See the License for the specific language governing
* permission and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* [Name of File] [ver.__] [Date]
*
* Copyright 2005 Sun Microsystems Inc. All Rights Reserved
*/
package com.sun.faces.config.rules;
import org.xml.sax.Attributes;
import com.sun.faces.config.beans.FacesConfigBean;
import com.sun.faces.config.beans.FactoryBean;
import com.sun.org.apache.commons.digester.Rule;
/**
* <p>Digester rule for the <code><factory></code> element.</p>
*/
public class FactoryRule extends Rule {
private static final String CLASS_NAME =
"com.sun.faces.config.beans.FactoryBean";
// ------------------------------------------------------------ Rule Methods
/**
* <p>Create or retrieve an instance of <code>FactoryBean</code>
* and push it on to the object stack.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param attributes The attribute list of this element
*
* @exception IllegalStateException if the parent stack element is not
* of type FacesConfigBean
*/
public void begin(String namespace, String name,
Attributes attributes) throws Exception {
FacesConfigBean fcb = null;
try {
fcb = (FacesConfigBean) digester.peek();
} catch (Exception e) {
throw new IllegalStateException
("No parent FacesConfigBean on object stack");
}
FactoryBean fb = fcb.getFactory();
if (fb == null) {
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[FactoryRule]{" +
digester.getMatch() +
"} New " + CLASS_NAME);
}
Class clazz =
digester.getClassLoader().loadClass(CLASS_NAME);
fb = (FactoryBean) clazz.newInstance();
fcb.setFactory(fb);
} else {
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[FactoryRule]{" +
digester.getMatch() +
"} Old " + CLASS_NAME);
}
}
digester.push(fb);
}
/**
* <p>No body processing is required.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
* @param text The text of the body of this element
*/
public void body(String namespace, String name,
String text) throws Exception {
}
/**
* <p>Pop the <code>FactoryBean</code> off the top of the stack.</p>
*
* @param namespace the namespace URI of the matching element, or an
* empty string if the parser is not namespace aware or the element has
* no namespace
* @param name the local name if the parser is namespace aware, or just
* the element name otherwise
*
* @exception IllegalStateException if the popped object is not
* of the correct type
*/
public void end(String namespace, String name) throws Exception {
Object top = digester.pop();
if (digester.getLogger().isDebugEnabled()) {
digester.getLogger().debug("[FactoryRule]{" +
digester.getMatch() +
"} Pop " + top.getClass());
}
if (!CLASS_NAME.equals(top.getClass().getName())) {
throw new IllegalStateException("Popped object is not a " +
CLASS_NAME + " instance");
}
}
/**
* <p>No finish processing is required.</p>
*
*/
public void finish() throws Exception {
}
// ---------------------------------------------------------- Public Methods
public String toString() {
StringBuffer sb = new StringBuffer("FactoryRule[className=");
sb.append(CLASS_NAME);
sb.append("]");
return (sb.toString());
}
}