01: /*
02: * Copyright 2007 The Kuali Foundation
03: *
04: * Licensed under the Educational Community License, Version 1.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.opensource.org/licenses/ecl1.php
09: *
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.kuali.rice.config;
17:
18: import org.springframework.beans.factory.FactoryBean;
19:
20: /**
21: * The entire purpose of this class is to wrap an otherwise normal bean
22: * whose class is dynamically set at runtime through the PropertyPlaceholderConfigurer
23: * because the <bean> element attributes themselves are not parameterizable,
24: * only the property values.
25: * @author Kuali Rice Team (kuali-rice@googlegroups.com)
26: */
27: public class BeanHolder implements FactoryBean {
28: private Class clazz;
29: private Object instance;
30:
31: public synchronized Object getObject() throws Exception {
32: if (this .instance == null) {
33: this .instance = this .clazz.newInstance();
34: }
35: return this .instance;
36: }
37:
38: public Class getObjectType() {
39: return this .clazz;
40: }
41:
42: public void setObjectType(Class clazz) {
43: this .clazz = clazz;
44: }
45:
46: public boolean isSingleton() {
47: return true;
48: }
49: }
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