AnyPackerTemplate.java

//
// MessagePack for Java
//
// Copyright (C) 2009 - 2013 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.MessageTypeException;
import org.msgpack.packer.Packer;

public class AnyPackerTemplate<T> extends AbstractPackerTemplate<T> {

    private TemplateRegistry registry;

    public AnyPackerTemplate(TemplateRegistry registry) {
        this.registry = registry;
    }

	public void write(Packer pk, T target, boolean required) throws IOException {
		if (target == null) {
			if (required) {
				throw new MessageTypeException("Attempted to write null");
			}
			pk.writeNil();
		} else {
			@SuppressWarnings("unchecked")
			Class<T> c = (Class<T>) target.getClass();
			registry.lookupPackerTemplate(c).write(pk, target);
		}
	}
}