| /** |
| * |
| * 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.hadoop.hbase.master.normalizer; |
| |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.client.Admin; |
| import org.apache.hadoop.hbase.master.normalizer.NormalizationPlan.PlanType; |
| |
| /** |
| * Plan which signifies that no normalization is required, |
| * or normalization of this table isn't allowed, this is singleton. |
| */ |
| @InterfaceAudience.Private |
| public final class EmptyNormalizationPlan implements NormalizationPlan { |
| private static final EmptyNormalizationPlan instance = new EmptyNormalizationPlan(); |
| |
| private EmptyNormalizationPlan() { |
| } |
| |
| /** |
| * @return singleton instance |
| */ |
| public static EmptyNormalizationPlan getInstance(){ |
| return instance; |
| } |
| |
| /** |
| * No-op for empty plan. |
| */ |
| @Override |
| public void execute(Admin admin) { |
| } |
| |
| @Override |
| public PlanType getType() { |
| return PlanType.NONE; |
| } |
| } |