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Spring Framework example source code file (InstantiationStrategy.java)

This example Spring Framework source code file (InstantiationStrategy.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

beanfactory, beansexception, beansexception, constructor, instantiationstrategy, method, object, object, reflection, rootbeandefinition, rootbeandefinition, string, string

The Spring Framework InstantiationStrategy.java source code

/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.beans.factory.support;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;

/**
 * Interface responsible for creating instances corresponding to a root bean definition.
 *
 * <p>This is pulled out into a strategy as various approaches are possible,
 * including using CGLIB to create subclasses on the fly to support Method Injection.
 *
 * @author Rod Johnson
 * @since 1.1
 */
public interface InstantiationStrategy {
	
	/**
	 * Return an instance of the bean with the given name in this factory.
	 * @param beanDefinition the bean definition
	 * @param beanName name of the bean when it's created in this context.
	 * The name can be <code>null if we're autowiring a bean that
	 * doesn't belong to the factory.
	 * @param owner owning BeanFactory
	 * @return a bean instance for this bean definition
	 * @throws BeansException if the instantiation failed
	 */
	Object instantiate(
			RootBeanDefinition beanDefinition, String beanName, BeanFactory owner) throws BeansException;
	
	/**
	 * Return an instance of the bean with the given name in this factory,
	 * creating it via the given constructor.
	 * @param beanDefinition the bean definition
	 * @param beanName name of the bean when it's created in this context.
	 * The name can be <code>null if we're autowiring a bean
	 * that doesn't belong to the factory.
	 * @param owner owning BeanFactory
	 * @param ctor the constructor to use
	 * @param args the constructor arguments to apply
	 * @return a bean instance for this bean definition
	 * @throws BeansException if the instantiation failed
	 */
	Object instantiate(
			RootBeanDefinition beanDefinition, String beanName, BeanFactory owner,
			Constructor ctor, Object[] args) throws BeansException;
	
	/**
	 * Return an instance of the bean with the given name in this factory,
	 * creating it via the given factory method.
	 * @param beanDefinition bean definition
	 * @param beanName name of the bean when it's created in this context.
	 * The name can be <code>null if we're autowiring a bean
	 * that doesn't belong to the factory.
	 * @param owner owning BeanFactory
	 * @param factoryBean the factory bean instance to call the factory method on,
	 * or <code>null in case of a static factory method
	 * @param factoryMethod the factory method to use
	 * @param args the factory method arguments to apply
	 * @return a bean instance for this bean definition
	 * @throws BeansException if the instantiation failed
	 */
	Object instantiate(
			RootBeanDefinition beanDefinition, String beanName, BeanFactory owner,
			Object factoryBean, Method factoryMethod, Object[] args) throws BeansException;
	
}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework InstantiationStrategy.java source code file:

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