/*
 * 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.geode.cache;

import org.apache.geode.GemFireException;

/**
 * A generic exception, which indicates a cache error has occurred. All the other cache exceptions
 * are subclasses of this class. This class is abstract and therefore only subclasses are
 * instantiated.
 *
 * @since GemFire 2.0
 */
public abstract class CacheException extends GemFireException {
  private static final long serialVersionUID = 7699432887938858940L;

  /** Constructs a new {@code CacheException}. */
  public CacheException() {
    super();
  }

  /** Constructs a new {@code CacheException} with a message string. */
  public CacheException(String s) {
    super(s);
  }

  /**
   * Constructs a {@code CacheException} with a message string and a base exception
   */
  public CacheException(String s, Throwable cause) {
    super(s, cause);
  }

  /** Constructs a {@code CacheException} with a cause */
  public CacheException(Throwable cause) {
    super(cause);
  }

  @Override
  public String toString() {
    String result = super.toString();
    Throwable cause = getCause();
    if (cause != null) {
      String causeStr = cause.toString();
      final String glue = ", caused by ";
      StringBuilder sb = new StringBuilder(result.length() + causeStr.length() + glue.length());
      sb.append(result).append(glue).append(causeStr);
      result = sb.toString();
    }
    return result;
  }
}
