/*
* $Id: StrutsVariableResolver.java 651946 2008-04-27 13:41:38Z apetrelli $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.struts2.jsf;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.VariableResolver;
import com.opensymphony.xwork2.ognl.OgnlValueStack;
import com.opensymphony.xwork2.ActionContext;
/**
* Will return a reference to the current action if the action name matches the
* requested variable name. Otherwise it will attempt to resolve the name from
* the value stack. Otherwise it will delegate to the original jsf resolver.
*/
public class StrutsVariableResolver extends VariableResolver {
/** The original <code>VariableResolver</code> passed to our constructor. */
private VariableResolver original = null;
/** The variable name of our Struts action */
private static final String STRUTS_VARIABLE_NAME = "action";
/**
* Constructor
*
* @param original
* Original resolver to delegate to.
*/
public StrutsVariableResolver(VariableResolver original) {
this.original = original;
}
/**
* <p>
* Will return a reference to the current action if the action name matches
* the requested variable name. Otherwise it will attempt to resolve the
* name from the value stack. Otherwise it will delegate to the original jsf
* resolver.
* </p>
*
* @param name
* Variable name to be resolved
*/
public Object resolveVariable(FacesContext context, String name)
throws EvaluationException {
if (STRUTS_VARIABLE_NAME.equals(name)) {
return ActionContext.getContext().getActionInvocation().getAction();
}
Object obj = ActionContext.getContext().getValueStack().findValue(name);
if (obj != null) {
return obj;
} else {
return original.resolveVariable(context, name);
}
}
}
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