| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.jena.dboe.transaction.txn; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import org.apache.jena.atlas.lib.Bytes; |
| |
| /** |
| * Simple TxnId, mainly for debugging. |
| */ |
| public class TxnIdSimple implements TxnId { |
| private static AtomicLong counter = new AtomicLong(0); |
| |
| static TxnIdSimple create() { |
| return new TxnIdSimple(counter.incrementAndGet()); |
| } |
| |
| public static TxnIdSimple create(byte[] bytes) { |
| return new TxnIdSimple(Bytes.getLong(bytes)); |
| } |
| |
| private final long x; |
| |
| public TxnIdSimple(long x) { |
| this.x = x; |
| } |
| |
| @Override |
| public String name() { |
| return String.format("0x%04X",x); |
| } |
| |
| @Override |
| public byte[] bytes() { |
| return Bytes.packLong(x); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Long.hashCode(x); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if ( this == obj ) |
| return true; |
| if ( obj == null ) |
| return false; |
| if ( getClass() != obj.getClass() ) |
| return false; |
| TxnIdSimple other = (TxnIdSimple)obj; |
| if ( x != other.x ) |
| return false; |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return "txn:"+x; |
| } |
| |
| @Override |
| public long runtime() { |
| return x; |
| } |
| } |
| |