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/*
* $Id: MockMethodBinding.java,v 1.1 2005/10/18 17:47:58 edburns 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.mock;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.MethodBinding;
import javax.faces.el.MethodNotFoundException;
import javax.faces.el.PropertyNotFoundException;
import javax.faces.el.PropertyResolver;
import javax.faces.el.ReferenceSyntaxException;
import javax.faces.el.ValueBinding;
import javax.faces.el.VariableResolver;
import javax.faces.component.StateHolder;
import javax.faces.component.UIComponentBase;
/**
* Mock implementation of {@link MethodBinding} that supports a limited
* subset of expression evaluation functionality:
*
* - The portion of the method reference expression before the final
* "." must conform to the limitations of {@link MockValueBinding}.
* - The name of the method to be executed cannot be delimited by "[]".
*
*/
public class MockMethodBinding extends MethodBinding implements StateHolder {
// ------------------------------------------------------------ Constructors
public MockMethodBinding() {
}
public MockMethodBinding(Application application, String ref,
Class args[]) {
this.application = application;
this.args = args;
if (ref.startsWith("#{") && ref.endsWith("}")) {
ref = ref.substring(2, ref.length() - 1);
}
this.ref = ref;
int period = ref.lastIndexOf(".");
if (period < 0) {
throw new ReferenceSyntaxException(ref);
}
vb = application.createValueBinding(ref.substring(0, period));
name = ref.substring(period + 1);
if (name.length() < 1) {
throw new ReferenceSyntaxException(ref);
}
}
// ------------------------------------------------------ Instance Variables
private Application application;
private Class args[];
private String name;
private String ref;
private ValueBinding vb;
// --------------------------------------------------- MethodBinding Methods
public Object invoke(FacesContext context, Object params[])
throws EvaluationException, MethodNotFoundException {
if (context == null) {
throw new NullPointerException();
}
Object base = vb.getValue(context);
Method method = method(base);
try {
return (method.invoke(base, params));
} catch (IllegalAccessException e) {
throw new EvaluationException(e);
} catch (InvocationTargetException e) {
throw new EvaluationException(e.getTargetException());
}
}
public Class getType(FacesContext context) {
Object base = vb.getValue(context);
Method method = method(base);
Class returnType = method.getReturnType();
if ("void".equals(returnType.getName())) {
return (null);
} else {
return (returnType);
}
}
public String getExpressionString() {
return "#{" + ref + "}";
}
// ----------------------------------------------------- StateHolder Methods
public Object saveState(FacesContext context) {
Object values[] = new Object[4];
values[0] = name;
values[1] = ref;
values[2] = UIComponentBase.saveAttachedState(context, vb);
values[3] = args;
return (values);
}
public void restoreState(FacesContext context, Object state) {
Object values[] = (Object[]) state;
name = (String) values[0];
ref = (String) values[1];
vb = (ValueBinding) UIComponentBase.restoreAttachedState(context,
values[2]);
args = (Class []) values[3];
}
private boolean transientFlag = false;
public boolean isTransient() {
return (this.transientFlag);
}
public void setTransient(boolean transientFlag) {
this.transientFlag = transientFlag;
}
public boolean equals(Object otherObj) {
MockMethodBinding other = null;
if (!(otherObj instanceof MockMethodBinding)) {
return false;
}
other = (MockMethodBinding) otherObj;
// test object reference equality
if (this.ref != other.ref) {
// test object equality
if (null != this.ref && null != other.ref) {
if (!this.ref.equals(other.ref)) {
return false;
}
}
return false;
}
// no need to test name, since it flows from ref.
// test our args array
if (this.args != other.args) {
if (this.args.length != other.args.length) {
return false;
}
for (int i = 0, len = this.args.length; i < len; i++) {
if (this.args[i] != other.args[i]) {
if (!this.ref.equals(other.ref)) {
return false;
}
}
}
}
return true;
}
// --------------------------------------------------------- Private Methods
// Package private so that unit tests can call this
Method method(Object base) {
Class clazz = base.getClass();
try {
return (clazz.getMethod(name, args));
} catch (NoSuchMethodException e) {
throw new MethodNotFoundException(ref + ": " + e.getMessage());
}
}
}