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AbstractBeanDefinitionReader (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.beans.factory.support
Class AbstractBeanDefinitionReader

java.lang.Object
  org.springframework.beans.factory.support.AbstractBeanDefinitionReader

All Implemented Interfaces:

BeanDefinitionReader

Direct Known Subclasses:

PropertiesBeanDefinitionReader, XmlBeanDefinitionReader

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public abstract class AbstractBeanDefinitionReader
extends Object
implements BeanDefinitionReader

Abstract base class for bean definition readers which implement the BeanDefinitionReader interface.

Provides common properties like the bean factory to work on and the class loader to use for loading bean classes.

Since:

11.12.2003

Author:

Juergen Hoeller

See Also:

BeanDefinitionReaderUtils

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Field Summary
protected  Log	logger           Logger available to subclasses

 

Constructor Summary
protected	AbstractBeanDefinitionReader(BeanDefinitionRegistry registry)           Create a new AbstractBeanDefinitionReader for the given bean factory.

 

Method Summary
ClassLoader	getBeanClassLoader()           Return the class loader to use for bean classes.
BeanDefinitionRegistry	getBeanFactory()           Return the bean factory to register the bean definitions with.
BeanNameGenerator	getBeanNameGenerator()           Return the BeanNameGenerator to use for anonymous beans (without explicit bean name specified).
BeanDefinitionRegistry	getRegistry()           Return the bean factory to register the bean definitions with.
ResourceLoader	getResourceLoader()           Return the resource loader to use for resource locations.
int	loadBeanDefinitions(Resource[] resources)           Load bean definitions from the specified resources.
int	loadBeanDefinitions(String location)           Load bean definitions from the specified resource location.
int	loadBeanDefinitions(String[] locations)           Load bean definitions from the specified resource locations.
void	setBeanClassLoader(ClassLoader beanClassLoader)           Set the ClassLoader to use for bean classes.
void	setBeanNameGenerator(BeanNameGenerator beanNameGenerator)           Set the BeanNameGenerator to use for anonymous beans (without explicit bean name specified).
void	setResourceLoader(ResourceLoader resourceLoader)           Set the ResourceLoader to use for resource locations.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Methods inherited from interface org.springframework.beans.factory.support.BeanDefinitionReader
loadBeanDefinitions

 

Field Detail

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

AbstractBeanDefinitionReader

protected AbstractBeanDefinitionReader(BeanDefinitionRegistry registry)

Create a new AbstractBeanDefinitionReader for the given bean factory.

If the passed-in bean factory does not only implement the BeanDefinitionRegistry interface but also the ResourceLoader interface, it will be used as default ResourceLoader as well. This will usually be the case for ApplicationContext implementations.

If given a plain BeanDefinitionRegistry, the default ResourceLoader will be a PathMatchingResourcePatternResolver.

Parameters:

registry - the BeanFactory to load bean definitions into, in the form of a BeanDefinitionRegistry

See Also:

setResourceLoader(org.springframework.core.io.ResourceLoader)

Method Detail

getBeanFactory

public final BeanDefinitionRegistry getBeanFactory()

Description copied from interface: BeanDefinitionReader

Return the bean factory to register the bean definitions with.

The factory is exposed through the BeanDefinitionRegistry interface, encapsulating the methods that are relevant for bean definition handling.

Specified by:

getBeanFactory in interface BeanDefinitionReader

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getRegistry

public final BeanDefinitionRegistry getRegistry()

Description copied from interface: BeanDefinitionReader

Return the bean factory to register the bean definitions with.

The factory is exposed through the BeanDefinitionRegistry interface, encapsulating the methods that are relevant for bean definition handling.

Specified by:

getRegistry in interface BeanDefinitionReader

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setResourceLoader

public void setResourceLoader(ResourceLoader resourceLoader)

Set the ResourceLoader to use for resource locations. If specifying a ResourcePatternResolver, the bean definition reader will be capable of resolving resource patterns to Resource arrays.

Default is PathMatchingResourcePatternResolver, also capable of resource pattern resolving through the ResourcePatternResolver interface.

Setting this to null suggests that absolute resource loading is not available for this bean definition reader.

See Also:

ResourcePatternResolver, PathMatchingResourcePatternResolver

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getResourceLoader

public ResourceLoader getResourceLoader()

Description copied from interface: BeanDefinitionReader

Return the resource loader to use for resource locations. Can be checked for the ResourcePatternResolver interface and cast accordingly, for loading multiple resources for a given resource pattern.

Null suggests that absolute resource loading is not available for this bean definition reader.

This is mainly meant to be used for importing further resources from within a bean definition resource, for example via the "import" tag in XML bean definitions. It is recommended, however, to apply such imports relative to the defining resource; only explicit full resource locations will trigger absolute resource loading.

There is also a loadBeanDefinitions(String) method available, for loading bean definitions from a resource location (or location pattern). This is a convenience to avoid explicit ResourceLoader handling.

Specified by:

getResourceLoader in interface BeanDefinitionReader

See Also:

BeanDefinitionReader.loadBeanDefinitions(String), ResourcePatternResolver

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setBeanClassLoader

public void setBeanClassLoader(ClassLoader beanClassLoader)

Set the ClassLoader to use for bean classes.

Default is null, which suggests to not load bean classes eagerly but rather to just register bean definitions with class names, with the corresponding Classes to be resolved later (or never).

See Also:

Thread.getContextClassLoader()

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getBeanClassLoader

public ClassLoader getBeanClassLoader()

Description copied from interface: BeanDefinitionReader

Return the class loader to use for bean classes.

null suggests to not load bean classes eagerly but rather to just register bean definitions with class names, with the corresponding Classes to be resolved later (or never).

Specified by:

getBeanClassLoader in interface BeanDefinitionReader

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setBeanNameGenerator

public void setBeanNameGenerator(BeanNameGenerator beanNameGenerator)

Set the BeanNameGenerator to use for anonymous beans (without explicit bean name specified).

Default is a DefaultBeanNameGenerator.

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getBeanNameGenerator

public BeanNameGenerator getBeanNameGenerator()

Description copied from interface: BeanDefinitionReader

Return the BeanNameGenerator to use for anonymous beans (without explicit bean name specified).

Specified by:

getBeanNameGenerator in interface BeanDefinitionReader

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loadBeanDefinitions

public int loadBeanDefinitions(Resource[] resources)
                        throws BeanDefinitionStoreException

Description copied from interface: BeanDefinitionReader

Load bean definitions from the specified resources.

Specified by:

loadBeanDefinitions in interface BeanDefinitionReader

Parameters:

resources - the resource descriptors

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

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loadBeanDefinitions

public int loadBeanDefinitions(String location)
                        throws BeanDefinitionStoreException

Description copied from interface: BeanDefinitionReader

Load bean definitions from the specified resource location.

The location can also be a location pattern, provided that the ResourceLoader of this bean definition reader is a ResourcePatternResolver.

Specified by:

loadBeanDefinitions in interface BeanDefinitionReader

Parameters:

location - the resource location, to be loaded with the ResourceLoader (or ResourcePatternResolver) of this bean definition reader

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

See Also:

BeanDefinitionReader.getResourceLoader(), BeanDefinitionReader.loadBeanDefinitions(org.springframework.core.io.Resource), BeanDefinitionReader.loadBeanDefinitions(org.springframework.core.io.Resource[])

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loadBeanDefinitions

public int loadBeanDefinitions(String[] locations)
                        throws BeanDefinitionStoreException

Description copied from interface: BeanDefinitionReader

Load bean definitions from the specified resource locations.

Specified by:

loadBeanDefinitions in interface BeanDefinitionReader

Parameters:

locations - the resource locations, to be loaded with the ResourceLoader (or ResourcePatternResolver) of this bean definition reader

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

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