| /** |
| * 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.distributedlog.selector; |
| |
| import org.apache.distributedlog.LogRecordWithDLSN; |
| |
| /** |
| * Save the first record with transaction id not less than the provided transaction id. |
| * If all records' transaction id is less than provided transaction id, save the last record. |
| */ |
| public class FirstTxIdNotLessThanSelector implements LogRecordSelector { |
| |
| LogRecordWithDLSN result; |
| final long txId; |
| boolean found = false; |
| |
| public FirstTxIdNotLessThanSelector(long txId) { |
| this.txId = txId; |
| } |
| |
| @Override |
| public void process(LogRecordWithDLSN record) { |
| if (found) { |
| return; |
| } |
| this.result = record; |
| if (record.getTransactionId() >= txId) { |
| found = true; |
| } |
| } |
| |
| @Override |
| public LogRecordWithDLSN result() { |
| return this.result; |
| } |
| } |