| 1 | /* |
| 2 | * Copyright 2002-2008 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.springframework.batch.core.listener; |
| 17 | |
| 18 | import org.springframework.batch.core.StepListener; |
| 19 | |
| 20 | /** |
| 21 | * This {@link AbstractListenerFactoryBean} implementation is used to create a |
| 22 | * {@link StepListener}. |
| 23 | * |
| 24 | * @author Lucas Ward |
| 25 | * @author Dan Garrette |
| 26 | * @since 2.0 |
| 27 | * @see AbstractListenerFactoryBean |
| 28 | * @see StepListenerMetaData |
| 29 | */ |
| 30 | public class StepListenerFactoryBean extends AbstractListenerFactoryBean { |
| 31 | |
| 32 | protected ListenerMetaData getMetaDataFromPropertyName(String propertyName) { |
| 33 | return StepListenerMetaData.fromPropertyName(propertyName); |
| 34 | } |
| 35 | |
| 36 | protected ListenerMetaData[] getMetaDataValues() { |
| 37 | return StepListenerMetaData.values(); |
| 38 | } |
| 39 | |
| 40 | protected Class<?> getDefaultListenerClass() { |
| 41 | return StepListener.class; |
| 42 | } |
| 43 | |
| 44 | @SuppressWarnings("unchecked") |
| 45 | public Class getObjectType() { |
| 46 | return StepListener.class; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Convenience method to wrap any object and expose the appropriate |
| 51 | * {@link StepListener} interfaces. |
| 52 | * |
| 53 | * @param delegate a delegate object |
| 54 | * @return a StepListener instance constructed from the delegate |
| 55 | */ |
| 56 | public static StepListener getListener(Object delegate) { |
| 57 | StepListenerFactoryBean factory = new StepListenerFactoryBean(); |
| 58 | factory.setDelegate(delegate); |
| 59 | return (StepListener) factory.getObject(); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Convenience method to check whether the given object is or can be made |
| 64 | * into a {@link StepListener}. |
| 65 | * |
| 66 | * @param delegate the object to check |
| 67 | * @return true if the delegate is an instance of any of the |
| 68 | * {@link StepListener} interfaces, or contains the marker |
| 69 | * annotations |
| 70 | */ |
| 71 | public static boolean isListener(Object delegate) { |
| 72 | return AbstractListenerFactoryBean.isListener(delegate, StepListener.class, StepListenerMetaData.values()); |
| 73 | } |
| 74 | } |