| /* |
| * 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 is used to modify the listeners that are associated with a CQ. Each CqQuery has an |
| * CqAttributesMutator interface which supports modification of certain CQ attributes after the CQ |
| * has been created. |
| * |
| * @since GemFire 5.5 |
| */ |
| public interface CqAttributesMutator { |
| |
| /** |
| * Adds a CQ listener to the end of the list of CQ listeners on this CqQuery. |
| * |
| * @param aListener the user defined CQ listener to add to the CqQuery. |
| * @throws IllegalArgumentException if <code>aListener</code> is null |
| */ |
| void addCqListener(CqListener aListener); |
| |
| /** |
| * Removes given CQ listener from the list of CQ listeners on this CqQuery. Does nothing if the |
| * specified listener has not been added. If the specified listener has been added then will be |
| * called on it; otherwise does nothing. |
| * |
| * @param aListener the CQ listener to remove from the CqQuery. |
| * @throws IllegalArgumentException if <code>aListener</code> is null |
| */ |
| void removeCqListener(CqListener aListener); |
| |
| /** |
| * Adds the given set CqListner on this CQ. If the CQ already has CqListeners, this removes those |
| * old CQs and initializes with the newListeners. |
| * |
| * @param newListeners a possibly null or empty array of listeners to add to this CqQuery. |
| * @throws IllegalArgumentException if the <code>newListeners</code> array has a null element |
| */ |
| void initCqListeners(CqListener[] newListeners); |
| |
| } |