//
// 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 java.lang.reflect.Type;
import org.msgpack.MessagePackable;
import org.msgpack.MessageTypeException;
import org.msgpack.packer.Packer;
import org.msgpack.unpacker.Unpacker;
public class DefaultTemplate<T> extends AbstractTemplate<T> {
private TemplateRegistry registry;
// this field should be deleted?
//private Class<?> targetClass;
private Type lookupType;
private boolean messagePackable;
public DefaultTemplate(TemplateRegistry registry, Class<T> targetClass) {
this(registry, targetClass, (Type) targetClass);
}
public DefaultTemplate(TemplateRegistry registry, Class<T> targetClass, Type lookupType) {
this.registry = registry;
//this.targetClass = targetClass;
this.lookupType = lookupType;
this.messagePackable = MessagePackable.class.isAssignableFrom(targetClass);
}
public void write(Packer pk, Object target, boolean required) throws IOException {
if (messagePackable) {
if (target == null) {
if (required) {
throw new NullPointerException("Attempted to write nil");
}
pk.writeNil();
return;
}
((MessagePackable) target).writeTo(pk);
return;
}
Template<Object> tmpl = registry.tryLookup(lookupType);
if (tmpl == this || tmpl == null) {
throw new MessageTypeException("Template lookup fail: " + lookupType);
}
tmpl.write(pk, target);
}
public Object read(Unpacker u, Object to, boolean required) throws IOException {
if (!required && u.trySkipNil()) {
return null;
}
// TODO #MN
Template<Object> tmpl = registry.tryLookup(lookupType);
if (tmpl == this || tmpl == null) {
throw new MessageTypeException("Template lookup fail: " + lookupType);
}
return tmpl.read(u, to);
}
}