//
// MessagePack for Java
//
// Copyright (C) 2009-2011 FURUHASHI Sadayuki
//
// 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.msgpack.template;
import java.io.IOException;
import org.msgpack.packer.Packer;
import org.msgpack.unpacker.Unpacker;
import org.msgpack.MessagePackable;
import org.msgpack.MessageTypeException;
public class MessagePackableTemplate extends AbstractTemplate<MessagePackable> {
private Class<?> targetClass;
MessagePackableTemplate(Class<?> targetClass) {
this.targetClass = targetClass;
}
public void write(Packer pk, MessagePackable target, boolean required) throws IOException {
if (target == null) {
if (required) {
throw new MessageTypeException("Attempted to write null");
}
pk.writeNil();
return;
}
target.writeTo(pk);
}
public MessagePackable read(Unpacker u, MessagePackable to, boolean required) throws IOException {
if (!required && u.trySkipNil()) {
return null;
}
if (to == null) {
try {
to = (MessagePackable) targetClass.newInstance();
} catch (InstantiationException e) {
throw new MessageTypeException(e);
} catch (IllegalAccessException e) {
throw new MessageTypeException(e);
}
}
to.readFrom(u);
return to;
}
}