| /* |
| * 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.modules.session.internal.filter.attributes; |
| |
| import org.apache.geode.DataSerializable; |
| import org.apache.geode.Instantiator; |
| |
| /** |
| * This class implements synchronous attribute delta propagation. Updates to attributes are |
| * immediately propagated. |
| */ |
| public class DeltaSessionAttributes extends AbstractDeltaSessionAttributes { |
| |
| // Register ourselves for de-serialization |
| static { |
| registerInstantiator(); |
| } |
| |
| public static void registerInstantiator() { |
| Instantiator.register(new Instantiator(DeltaSessionAttributes.class, 347) { |
| @Override |
| public DataSerializable newInstance() { |
| return new DeltaSessionAttributes(); |
| } |
| }); |
| } |
| |
| /** |
| * Default constructor |
| */ |
| public DeltaSessionAttributes() {} |
| |
| /** |
| * {@inheritDoc} Put an attribute, setting the dirty flag and immediately flushing the delta |
| * queue. |
| */ |
| @Override |
| public Object putAttribute(String attr, Object value) { |
| Object obj = attributes.put(attr, value); |
| deltas.put(attr, new DeltaEvent(true, attr, value)); |
| flush(); |
| return obj; |
| } |
| |
| /** |
| * {@inheritDoc} Remove an attribute, setting the dirty flag and immediately flushing the delta |
| * queue. |
| */ |
| @Override |
| public Object removeAttribute(String attr) { |
| Object obj = attributes.remove(attr); |
| deltas.put(attr, new DeltaEvent(false, attr, null)); |
| flush(); |
| return obj; |
| } |
| } |