01: /*
02: * Copyright 2002-2005 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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:
17: package org.springframework.beans.factory.support;
18:
19: import java.lang.reflect.Constructor;
20: import java.lang.reflect.Method;
21:
22: import org.springframework.beans.BeansException;
23: import org.springframework.beans.factory.BeanFactory;
24:
25: /**
26: * Interface responsible for creating instances corresponding to a root bean definition.
27: *
28: * <p>This is pulled out into a strategy as various approaches are possible,
29: * including using CGLIB to create subclasses on the fly to support Method Injection.
30: *
31: * @author Rod Johnson
32: * @since 1.1
33: */
34: public interface InstantiationStrategy {
35:
36: /**
37: * Return an instance of the bean with the given name in this factory.
38: * @param beanDefinition the bean definition
39: * @param beanName name of the bean when it's created in this context.
40: * The name can be <code>null</code> if we're autowiring a bean that
41: * doesn't belong to the factory.
42: * @param owner owning BeanFactory
43: * @return a bean instance for this bean definition
44: * @throws BeansException if the instantiation failed
45: */
46: Object instantiate(RootBeanDefinition beanDefinition,
47: String beanName, BeanFactory owner) throws BeansException;
48:
49: /**
50: * Return an instance of the bean with the given name in this factory,
51: * creating it via the given constructor.
52: * @param beanDefinition the bean definition
53: * @param beanName name of the bean when it's created in this context.
54: * The name can be <code>null</code> if we're autowiring a bean
55: * that doesn't belong to the factory.
56: * @param owner owning BeanFactory
57: * @param ctor the constructor to use
58: * @param args the constructor arguments to apply
59: * @return a bean instance for this bean definition
60: * @throws BeansException if the instantiation failed
61: */
62: Object instantiate(RootBeanDefinition beanDefinition,
63: String beanName, BeanFactory owner, Constructor ctor,
64: Object[] args) throws BeansException;
65:
66: /**
67: * Return an instance of the bean with the given name in this factory,
68: * creating it via the given factory method.
69: * @param beanDefinition bean definition
70: * @param beanName name of the bean when it's created in this context.
71: * The name can be <code>null</code> if we're autowiring a bean
72: * that doesn't belong to the factory.
73: * @param owner owning BeanFactory
74: * @param factoryBean the factory bean instance to call the factory method on,
75: * or <code>null</code> in case of a static factory method
76: * @param factoryMethod the factory method to use
77: * @param args the factory method arguments to apply
78: * @return a bean instance for this bean definition
79: * @throws BeansException if the instantiation failed
80: */
81: Object instantiate(RootBeanDefinition beanDefinition,
82: String beanName, BeanFactory owner, Object factoryBean,
83: Method factoryMethod, Object[] args) throws BeansException;
84:
85: }
|