| /** |
| * 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.curator.framework.imps; |
| |
| import com.google.common.base.Preconditions; |
| import org.apache.curator.framework.api.transaction.CuratorOp; |
| import org.apache.curator.framework.api.transaction.TypeAndPath; |
| import org.apache.zookeeper.Op; |
| |
| class ExtractingCuratorOp implements CuratorOp |
| { |
| private final CuratorMultiTransactionRecord record = new CuratorMultiTransactionRecord(); |
| |
| CuratorMultiTransactionRecord getRecord() |
| { |
| return record; |
| } |
| |
| @Override |
| public TypeAndPath getTypeAndPath() |
| { |
| validate(); |
| return record.getMetadata(0); |
| } |
| |
| @Override |
| public Op get() |
| { |
| validate(); |
| return record.iterator().next(); |
| } |
| |
| private void validate() |
| { |
| Preconditions.checkArgument(record.size() > 0, "No operation has been added"); |
| Preconditions.checkArgument(record.size() == 1, "Multiple operations added"); |
| } |
| } |