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Java > Open Source Codes > org > apache > hivemind > lib > impl > SpringLookupFactory


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.lib.impl;
16
17 import org.apache.hivemind.ServiceImplementationFactory;
18 import org.apache.hivemind.ServiceImplementationFactoryParameters;
19 import org.apache.hivemind.impl.BaseLocatable;
20 import org.springframework.beans.factory.BeanFactory;
21
22 /**
23  * Implementation of {@link org.apache.hivemind.ServiceImplementationFactory} that doesn't create
24  * beans, but instead it looks them up inside a Spring
25  * {@link org.springframework.beans.factory.BeanFactory}.
26  *
27  * @author Howard Lewis Ship
28  */
29 public class SpringLookupFactory extends BaseLocatable implements ServiceImplementationFactory
30 {
31     /** @since 1.1 */
32     private BeanFactory _defaultBeanFactory;
33
34     public Object JavaDoc createCoreServiceImplementation(
35             ServiceImplementationFactoryParameters factoryParameters)
36     {
37         SpringBeanParameter p = (SpringBeanParameter) factoryParameters.getFirstParameter();
38         String JavaDoc beanName = p.getName();
39
40         BeanFactory f = p.getBeanFactory();
41
42         if (f == null)
43             f = _defaultBeanFactory;
44
45         return f.getBean(beanName, factoryParameters.getServiceInterface());
46     }
47
48     /** @since 1.1 */
49     public void setDefaultBeanFactory(BeanFactory defaultBeanFactory)
50     {
51         _defaultBeanFactory = defaultBeanFactory;
52     }
53 }
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