/*
* (C) 2007-2012 Alibaba Group Holding Limited.
*
* 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.
* Authors:
* wuhua <wq163@163.com> , boyan <killme2008@gmail.com>
*/
package com.taobao.metamorphosis.transaction;
import java.io.Serializable;
/**
* ����id��װ��
*
* @author boyan
*
*/
public abstract class TransactionId implements Serializable {
/**
*
*/
private static final long serialVersionUID = 2157471469471230263L;
public static final NullTransactionId Null = new NullTransactionId();
public abstract boolean isXATransaction();
public abstract boolean isLocalTransaction();
public abstract String getTransactionKey();
public abstract boolean isNull();
public static TransactionId valueOf(final String key) {
if (key.equals("null")) {
return TransactionId.Null;
}
else if (key.startsWith("XID:")) {
return new XATransactionId(key);
}
else if (key.startsWith("TX:")) {
return new LocalTransactionId(key);
}
else {
throw new IllegalArgumentException("Illegal transaction key:" + key);
}
}
}