/*
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
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* and therefore, elected the GPL Version 2 license, then the option applies
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/*
* Copyright 2009 Richard Zschech.
*
* 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.atmosphere.gwt.client;
import com.google.gwt.core.client.GWT;
import java.io.Serializable;
import com.google.gwt.rpc.client.impl.ClientWriterFactory;
import com.google.gwt.user.client.rpc.SerializationException;
import com.google.gwt.user.client.rpc.SerializationStreamReader;
import com.google.gwt.user.client.rpc.impl.ClientSerializationStreamReader;
import com.google.gwt.user.client.rpc.impl.ClientSerializationStreamWriter;
import com.google.gwt.user.client.rpc.impl.Serializer;
/**
* The base class for comet serializers. To instantiate this class follow this example:
*
* <code>
* @SerialTypes({ MyType1.class, MyType2.class })
* public static abstract class MyCometSerializer extends CometSerializer {}
*
* CometSerializer serializer = GWT.create(MyCometSerializer.class);
* serializer.parse(...);
* </code>
*
* Where MyType1 and MyType2 are the types that your expecting to receive from the server.
*
* @author Richard Zschech
*/
public abstract class AtmosphereGWTSerializer {
@SuppressWarnings("unchecked")
public <T extends Serializable> T parse(String message) throws SerializationException {
if (getMode() == SerialMode.RPC) {
try {
Serializer serializer = getSerializer();
ClientSerializationStreamReader reader = new ClientSerializationStreamReader(serializer);
reader.prepareToRead(message);
return (T) reader.readObject();
}
catch (RuntimeException e) {
throw new SerializationException(e);
}
}
else if (getMode() == SerialMode.DE_RPC) {
try {
SerializationStreamReader reader = ClientWriterFactory.createReader(message);
return (T) reader.readObject();
}
catch (RuntimeException e) {
throw new SerializationException(e);
}
} else if (getMode() == SerialMode.PLAIN) {
return (T) message;
} else {
throw new UnsupportedOperationException("Not implemented yet");
}
}
@SuppressWarnings("unchecked")
public <T extends Serializable> String serialize(T message) throws SerializationException {
if (getPushMode() == SerialMode.RPC) {
try {
Serializer serializer = getSerializer();
ClientSerializationStreamWriter writer = new ClientSerializationStreamWriter(serializer, GWT.getModuleBaseURL(), GWT.getPermutationStrongName());
writer.prepareToWrite();
writer.writeObject(message);
return writer.toString();
}
catch (RuntimeException e) {
throw new SerializationException(e);
}
} else if (getPushMode() == SerialMode.PLAIN) {
return message.toString();
} else {
throw new UnsupportedOperationException("Not implemented yet");
}
}
protected abstract Serializer getSerializer();
public abstract SerialMode getMode();
public abstract SerialMode getPushMode();
}