com.google.cloud.dataflow.sdk.util.IllegalMutationException Maven / Gradle / Ivy

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Google Cloud Dataflow Java SDK provides a simple, Java-based interface for processing virtually any size data using Google cloud resources. This artifact includes entire Dataflow Java SDK.

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/*
 * Copyright (C) 2015 Google Inc.
 *
 * Licensed 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 com.google.cloud.dataflow.sdk.util;

/**
 * Thrown when a value appears to have been mutated, but that mutation is forbidden.
 */
public class IllegalMutationException extends RuntimeException {
  private Object savedValue;
  private Object newValue;

  public IllegalMutationException(String message, Object savedValue, Object newValue) {
    super(message);
    this.savedValue = savedValue;
    this.newValue = newValue;
  }

  public IllegalMutationException(
      String message, Object savedValue, Object newValue, Throwable cause) {
    super(message, cause);
    this.savedValue = savedValue;
    this.newValue = newValue;
  }

  /**
   * The original value, before the illegal mutation.
   */
  public Object getSavedValue() {
    return savedValue;
  }

  /**
   * The value after the illegal mutation.
   */
  public Object getNewValue() {
    return newValue;
  }
}