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/*
* Copyright 2001-2009 OFFIS, Tammo Freese
*
* Licensed 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.easymock.internal;
import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
public class ObjectMethodsFilter implements InvocationHandler, Serializable {
private static final long serialVersionUID = -2120581954279966998L;
private transient Method equalsMethod;
private transient Method hashCodeMethod;
private transient Method toStringMethod;
private final MockInvocationHandler delegate;
private final String name;
public ObjectMethodsFilter(Class<?> toMock, MockInvocationHandler delegate,
String name) {
if (name != null && !Invocation.isJavaIdentifier(name)) {
throw new IllegalArgumentException(String.format("'%s' is not a valid Java identifier.", name));
}
try {
if (toMock.isInterface()) {
toMock = Object.class;
}
equalsMethod = toMock.getMethod("equals",
new Class[] { Object.class });
hashCodeMethod = toMock.getMethod("hashCode", (Class[]) null);
toStringMethod = toMock.getMethod("toString", (Class[]) null);
} catch (NoSuchMethodException e) {
// ///CLOVER:OFF
throw new RuntimeException("An Object method could not be found!");
// ///CLOVER:ON
}
this.delegate = delegate;
this.name = name;
}
public final Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
if (equalsMethod.equals(method)) {
return Boolean.valueOf(proxy == args[0]);
}
if (hashCodeMethod.equals(method)) {
return Integer.valueOf(System.identityHashCode(proxy));
}
if (toStringMethod.equals(method)) {
return mockToString(proxy);
}
return delegate.invoke(proxy, method, args);
}
private String mockToString(Object proxy) {
return (name != null) ? name : "EasyMock for " + mockType(proxy);
}
private String mockType(Object proxy) {
if (Proxy.isProxyClass(proxy.getClass()))
return proxy.getClass().getInterfaces()[0].toString();
else
return proxy.getClass().getSuperclass().toString();
}
public MockInvocationHandler getDelegate() {
return delegate;
}
private void readObject(java.io.ObjectInputStream stream) throws IOException, ClassNotFoundException {
stream.defaultReadObject();
try {
toStringMethod = ((MethodSerializationWrapper) stream.readObject()).getMethod();
equalsMethod = ((MethodSerializationWrapper) stream.readObject()).getMethod();
hashCodeMethod = ((MethodSerializationWrapper) stream.readObject()).getMethod();
} catch (NoSuchMethodException e) {
// ///CLOVER:OFF
throw new IOException(e.toString());
// ///CLOVER:ON
}
}
private void writeObject(java.io.ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
stream.writeObject(new MethodSerializationWrapper(toStringMethod));
stream.writeObject(new MethodSerializationWrapper(equalsMethod));
stream.writeObject(new MethodSerializationWrapper(hashCodeMethod));
}
}
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