/*
* 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.beam.sdk.util;
/**
* An object for detecting illegal mutations.
*
* <p>The {@link AutoCloseable} aspect of this interface allows use in a try-with-resources
* style, where the implementing class may choose to perform a final mutation check upon
* {@link #close()}.
*/
public interface MutationDetector extends AutoCloseable {
/**
* @throws IllegalMutationException if illegal mutations are detected.
*/
void verifyUnmodified() throws IllegalMutationException;
}