| /* |
| * 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.wan; |
| |
| import org.apache.geode.cache.CacheCallback; |
| import org.apache.geode.cache.EntryEvent; |
| |
| /** |
| * Interface <code>GatewayEventSubstitutionFilter</code> provides a way to specify a substitute |
| * value to be stored in the <code>GatewayQueueEvent</code> and enqueued in the |
| * <code>RegionQueue</code>. |
| */ |
| public interface GatewayEventSubstitutionFilter<K, V> extends CacheCallback { |
| |
| /** |
| * Return the substitute value to be stored in the <code>GatewayQueueEvent</code> and enqueued in |
| * the <code>RegionQueue</code> |
| * |
| * @param event The originating <code>EntryEvent</code> |
| * @return the substitute value to be stored in the <code>GatewayQueueEvent</code> and enqueued in |
| * the <code>RegionQueue</code> |
| */ |
| Object getSubstituteValue(EntryEvent<K, V> event); |
| } |