/*
 * 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.query;

/**
 * This interface gives information on the state of a CqQuery. It is provided by the getState method
 * of the CqQuery instance.
 *
 * @since GemFire 5.5
 */

public interface CqState {

  /**
   * Returns the state in string form.
   */
  String toString();

  /**
   * Returns true if the CQ is in Running state.
   *
   * @return whether the CQ is in Running state.
   */
  boolean isRunning();

  /**
   * Returns true if the CQ is in Stopped state.
   *
   * @return whether the CQ is in Stopped state.
   */
  boolean isStopped();

  /**
   * Returns true if the CQ is in Closed state.
   *
   * @return whether the CQ is in Closed state.
   */
  boolean isClosed();

  /**
   * Returns true if the CQ is in Closing state.
   *
   * @return whether the CQ is in Closing state.
   */
  boolean isClosing();

}
