| /* |
| * 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.flink.configuration; |
| |
| import org.apache.flink.annotation.Public; |
| |
| import java.util.Map; |
| import java.util.Properties; |
| |
| /** |
| * Unmodifiable version of the Configuration class. |
| */ |
| @Public |
| public class UnmodifiableConfiguration extends Configuration { |
| |
| private static final long serialVersionUID = -8151292629158972280L; |
| |
| /** |
| * Creates a new UnmodifiableConfiguration, which holds a copy of the given configuration |
| * that cannot be altered. |
| * |
| * @param config The configuration with the original contents. |
| */ |
| public UnmodifiableConfiguration(Configuration config) { |
| super(config); |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| // All mutating methods must fail |
| // -------------------------------------------------------------------------------------------- |
| |
| @Override |
| public void addAllToProperties(Properties props) { |
| // override to make the UnmodifiableConfigurationTest happy |
| super.addAllToProperties(props); |
| } |
| |
| @Override |
| public final void addAll(Configuration other) { |
| error(); |
| } |
| |
| public void addAll(Map<String, String> other) { |
| error(); |
| } |
| |
| @Override |
| public final void addAll(Configuration other, String prefix) { |
| error(); |
| } |
| |
| @Override |
| final <T> void setValueInternal(String key, T value){ |
| error(); |
| } |
| |
| private void error(){ |
| throw new UnsupportedOperationException("The configuration is unmodifiable; its contents cannot be changed."); |
| } |
| } |