/*
* Copyright 2002-2007 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.beans.PropertyDescriptor;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import org.springframework.beans.BeansException;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.PropertyValue;
import org.springframework.beans.PropertyValues;
import org.springframework.beans.TypeMismatchException;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.BeanNameAware;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.UnsatisfiedDependencyException;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.factory.config.ConstructorArgumentValues;
import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;
import org.springframework.util.StringUtils;
/**
* Abstract BeanFactory superclass that implements default bean creation,
* with the full capabilities specified by the RootBeanDefinition class.
* Implements the AutowireCapableBeanFactory interface in addition to
* AbstractBeanFactory's <code>createBean</code> method.
*
* <p>Provides bean creation (with constructor resolution), property population,
* wiring (including autowiring), and initialization. Handles runtime bean
* references, resolves managed collections, calls initialization methods, etc.
* Supports autowiring constructors, properties by name, and properties by type.
*
* <p>The main template method to be implemented by subclasses is
* <code>findMatchingBeans</code>, used for autowiring by type. In case of
* a factory which is capable of searching its bean definitions, matching
* beans will typically be implemented through such a search. For other
* factory styles, simplified matching algorithms can be implemented.
*
* <p>Note that this class does <i>not</i> assume or implement bean definition
* registry capabilities. See DefaultListableBeanFactory for an implementation
* of the ListableBeanFactory and BeanDefinitionRegistry interfaces, which
* represent the API (or SPI) view of such a factory.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @author Rob Harrop
* @since 13.02.2004
* @see AutowireCapableBeanFactory
* @see AbstractBeanFactory#createBean
* @see RootBeanDefinition
* @see #findMatchingBeans(Class)
* @see DefaultListableBeanFactory
* @see BeanDefinitionRegistry
*/
public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFactory
implements AutowireCapableBeanFactory {
private InstantiationStrategy instantiationStrategy = new CglibSubclassingInstantiationStrategy();
/** Whether to automatically try to resolve circular references between beans */
private boolean allowCircularReferences = true;
/**
* Dependency types to ignore on dependency check and autowire, as Set of
* Class objects: for example, String. Default is none.
*/
private final Set ignoredDependencyTypes = new HashSet();
/**
* Dependency interfaces to ignore on dependency check and autowire, as Set of
* Class objects. By default, only the BeanFactory interface is ignored.
*/
private final Set ignoredDependencyInterfaces = new HashSet();
/**
* Create a new AbstractAutowireCapableBeanFactory.
*/
public AbstractAutowireCapableBeanFactory() {
super();
ignoreDependencyInterface(BeanNameAware.class);
ignoreDependencyInterface(BeanFactoryAware.class);
}
/**
* Create a new AbstractAutowireCapableBeanFactory with the given parent.
* @param parentBeanFactory parent bean factory, or <code>null</code> if none
*/
public AbstractAutowireCapableBeanFactory(BeanFactory parentBeanFactory) {
this();
setParentBeanFactory(parentBeanFactory);
}
/**
* Set the instantiation strategy to use for creating bean instances.
* Default is CglibSubclassingInstantiationStrategy.
* @see CglibSubclassingInstantiationStrategy
*/
public void setInstantiationStrategy(InstantiationStrategy instantiationStrategy) {
this.instantiationStrategy = instantiationStrategy;
}
/**
* Return the current instantiation strategy.
*/
public InstantiationStrategy getInstantiationStrategy() {
return instantiationStrategy;
}
/**
* Set whether to allow circular references between beans - and automatically
* try to resolve them.
* <p>Note that circular reference resolution means that one of the involved beans
* will receive a reference to another bean that is not fully initialized yet.
* This can lead to subtle and not-so-subtle side effects on initialization;
* it does work fine for many scenarios, though.
* <p>Default is "true". Turn this off to throw an exception when encountering
* a circular reference, disallowing them completely.
* <p><b>NOTE:</b> It is generally recommended to not rely on circular references
* between your beans. Refactor your application logic to have the two beans
* involved delegate to a third bean that encapsulates their common logic.
*/
public void setAllowCircularReferences(boolean allowCircularReferences) {
this.allowCircularReferences = allowCircularReferences;
}
/**
* Return whether to allow circular references between beans - and automatically
* try to resolve them.
*/
public boolean isAllowCircularReferences() {
return allowCircularReferences;
}
/**
* Ignore the given dependency type for autowiring:
* for example, String. Default is none.
*/
public void ignoreDependencyType(Class type) {
this.ignoredDependencyTypes.add(type);
}
/**
* Return the set of dependency types that will get ignored for autowiring.
* @return Set of Class objects
*/
public Set getIgnoredDependencyTypes() {
return ignoredDependencyTypes;
}
/**
* Ignore the given dependency interface for autowiring.
* <p>This will typically be used by application contexts to register
* dependencies that are resolved in other ways, like BeanFactory through
* BeanFactoryAware or ApplicationContext through ApplicationContextAware.
* <p>By default, only the BeanFactoryAware interface is ignored.
* For further types to ignore, invoke this method for each type.
* @see org.springframework.beans.factory.BeanFactoryAware
* @see org.springframework.context.ApplicationContextAware
*/
public void ignoreDependencyInterface(Class ifc) {
this.ignoredDependencyInterfaces.add(ifc);
}
/**
* Return the set of dependency interfaces that will get ignored for autowiring.
*/
public Set getIgnoredDependencyInterfaces() {
return ignoredDependencyInterfaces;
}
//-----
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