001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.xbean.kernel; 018 019 import java.util.Set; 020 import java.util.Collections; 021 import java.util.HashSet; 022 023 /** 024 * AbstractServiceFactory is an implementation of ServiceFactory that handles all of the mundane issues. 025 * 026 * @author Dain Sundstrom 027 * @version $Id$ 028 * @since 2.0 029 */ 030 public abstract class AbstractServiceFactory implements ServiceFactory { 031 private boolean enabled = true; 032 private final Set startConditions = new HashSet(); 033 private final Set stopConditions = new HashSet(); 034 035 /** 036 * {@inheritDoc} 037 */ 038 public synchronized boolean isEnabled() { 039 return enabled; 040 } 041 042 /** 043 * {@inheritDoc} 044 */ 045 public synchronized void setEnabled(boolean enabled) { 046 this.enabled = enabled; 047 } 048 049 /** 050 * {@inheritDoc} 051 */ 052 public synchronized Set getStartConditions() { 053 return Collections.unmodifiableSet(new HashSet(startConditions)); 054 } 055 056 /** 057 * {@inheritDoc} 058 */ 059 public synchronized void addStartCondition(ServiceCondition startCondition) throws NullPointerException { 060 if (startCondition == null) throw new NullPointerException("startCondition is null"); 061 startConditions.add(startCondition); 062 } 063 064 /** 065 * {@inheritDoc} 066 */ 067 public synchronized void removeStartCondition(ServiceCondition startCondition) throws NullPointerException { 068 if (startCondition == null) throw new NullPointerException("startCondition is null"); 069 startConditions.remove(startCondition); 070 } 071 072 /** 073 * {@inheritDoc} 074 */ 075 public synchronized Set getStopConditions() { 076 return Collections.unmodifiableSet(new HashSet(stopConditions)); 077 } 078 079 /** 080 * {@inheritDoc} 081 */ 082 public synchronized void addStopCondition(ServiceCondition stopCondition) throws NullPointerException { 083 if (stopCondition == null) throw new NullPointerException("stopCondition is null"); 084 stopConditions.add(stopCondition); 085 } 086 087 /** 088 * {@inheritDoc} 089 */ 090 public synchronized void removeStopCondition(ServiceCondition stopCondition) throws NullPointerException { 091 if (stopCondition == null) throw new NullPointerException("stopCondition is null"); 092 stopConditions.remove(stopCondition); 093 } 094 }