1 /*
2 * Copyright 2002-2012 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
17 package org.springframework.scripting.support;
18
19 import org.springframework.aop.target.dynamic.BeanFactoryRefreshableTargetSource;
20 import org.springframework.beans.factory.BeanFactory;
21 import org.springframework.scripting.ScriptFactory;
22 import org.springframework.scripting.ScriptSource;
23 import org.springframework.util.Assert;
24
25 /**
26 * Subclass of {@link BeanFactoryRefreshableTargetSource} that determines whether
27 * a refresh is required through the given {@link ScriptFactory}.
28 *
29 * @author Rob Harrop
30 * @author Juergen Hoeller
31 * @author Mark Fisher
32 * @since 2.0
33 */
34 public class RefreshableScriptTargetSource extends BeanFactoryRefreshableTargetSource {
35
36 private final ScriptFactory scriptFactory;
37
38 private final ScriptSource scriptSource;
39
40 private final boolean isFactoryBean;
41
42
43 /**
44 * Create a new RefreshableScriptTargetSource.
45 * @param beanFactory the BeanFactory to fetch the scripted bean from
46 * @param beanName the name of the target bean
47 * @param scriptFactory the ScriptFactory to delegate to for determining
48 * whether a refresh is required
49 * @param scriptSource the ScriptSource for the script definition
50 * @param isFactoryBean whether the target script defines a FactoryBean
51 */
52 public RefreshableScriptTargetSource(BeanFactory beanFactory, String beanName,
53 ScriptFactory scriptFactory, ScriptSource scriptSource, boolean isFactoryBean) {
54
55 super(beanFactory, beanName);
56 Assert.notNull(scriptFactory, "ScriptFactory must not be null");
57 Assert.notNull(scriptSource, "ScriptSource must not be null");
58 this.scriptFactory = scriptFactory;
59 this.scriptSource = scriptSource;
60 this.isFactoryBean = isFactoryBean;
61 }
62
63
64 /**
65 * Determine whether a refresh is required through calling
66 * ScriptFactory's {@code requiresScriptedObjectRefresh} method.
67 * @see ScriptFactory#requiresScriptedObjectRefresh(ScriptSource)
68 */
69 @Override
70 protected boolean requiresRefresh() {
71 return this.scriptFactory.requiresScriptedObjectRefresh(this.scriptSource);
72 }
73
74 /**
75 * Obtain a fresh target object, retrieving a FactoryBean if necessary.
76 */
77 @Override
78 protected Object obtainFreshBean(BeanFactory beanFactory, String beanName) {
79 return super.obtainFreshBean(beanFactory,
80 (this.isFactoryBean ? BeanFactory.FACTORY_BEAN_PREFIX + beanName : beanName));
81 }
82
83 }