| // Copyright 2006, 2007 The Apache Software Foundation |
| // |
| // Licensed 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.tapestry5.internal.services; |
| |
| import org.apache.tapestry5.ioc.internal.util.CollectionFactory; |
| import static org.apache.tapestry5.ioc.internal.util.CollectionFactory.newStack; |
| import org.apache.tapestry5.ioc.internal.util.Defense; |
| import org.apache.tapestry5.ioc.util.Stack; |
| import org.apache.tapestry5.services.Heartbeat; |
| |
| import java.util.List; |
| |
| public class HeartbeatImpl implements Heartbeat |
| { |
| private final Stack<List<Runnable>> stack = newStack(); |
| |
| public void begin() |
| { |
| List<Runnable> beat = CollectionFactory.newList(); |
| |
| stack.push(beat); |
| } |
| |
| public void defer(Runnable command) |
| { |
| Defense.notNull(command, "command"); |
| |
| stack.peek().add(command); |
| |
| } |
| |
| public void end() |
| { |
| List<Runnable> beat = stack.pop(); |
| |
| for (Runnable r : beat) |
| r.run(); |
| } |
| |
| } |