org.springframework.context.support
Class AbstractXmlApplicationContext

java.lang.Object
  org.springframework.core.io.DefaultResourceLoader
      org.springframework.context.support.AbstractApplicationContext
          org.springframework.context.support.AbstractRefreshableApplicationContext
              org.springframework.context.support.AbstractXmlApplicationContext

All Implemented Interfaces:

BeanFactory, DisposableBean, HierarchicalBeanFactory, ListableBeanFactory, ApplicationContext, ApplicationEventPublisher, ConfigurableApplicationContext, Lifecycle, MessageSource, ResourceLoader, ResourcePatternResolver

Direct Known Subclasses:

ClassPathXmlApplicationContext, FileSystemXmlApplicationContext

public abstract class AbstractXmlApplicationContext
extends AbstractRefreshableApplicationContext

Convenient base class for ApplicationContext implementations, drawing configuration from XML documents containing bean definitions understood by an XmlBeanDefinitionReader.

Subclasses just have to implement the getConfigResources() and/or the getConfigLocations() method. Furthermore, they might override the DefaultResourceLoader.getResourceByPath(java.lang.String) hook to interpret relative paths in an environment-specific fashion, and/or AbstractApplicationContext.getResourcePatternResolver() for extended pattern resolution.

Author:

Rod Johnson, Juergen Hoeller

See Also:

getConfigResources(), getConfigLocations(), XmlBeanDefinitionReader

Field Summary

Fields inherited from class org.springframework.context.support.AbstractApplicationContext

APPLICATION_EVENT_MULTICASTER_BEAN_NAME, logger, MESSAGE_SOURCE_BEAN_NAME

Fields inherited from interface org.springframework.beans.factory.BeanFactory

FACTORY_BEAN_PREFIX

Fields inherited from interface org.springframework.beans.factory.BeanFactory

FACTORY_BEAN_PREFIX

Fields inherited from interface org.springframework.core.io.support.ResourcePatternResolver

CLASSPATH_ALL_URL_PREFIX

Fields inherited from interface org.springframework.core.io.ResourceLoader

CLASSPATH_URL_PREFIX

Constructor Summary

AbstractXmlApplicationContext()
Create a new AbstractXmlApplicationContext with no parent.

AbstractXmlApplicationContext(ApplicationContext parent)
Create a new AbstractXmlApplicationContext with the given parent context.

Method Summary

protected String[]	getConfigLocations() Return an array of resource locations, referring to the XML bean definition files that this context should be built with.
protected Resource[]	getConfigResources() Return an array of Resource objects, referring to the XML bean definition files that this context should be built with.
protected void	initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader) Initialize the bean definition reader used for loading the bean definitions of this context.
protected void	loadBeanDefinitions(DefaultListableBeanFactory beanFactory) Loads the bean definitions via an XmlBeanDefinitionReader.
protected void	loadBeanDefinitions(XmlBeanDefinitionReader reader) Load the bean definitions with the given XmlBeanDefinitionReader.

Methods inherited from class org.springframework.context.support.AbstractRefreshableApplicationContext

closeBeanFactory, createBeanFactory, customizeBeanFactory, getBeanFactory, refreshBeanFactory

Methods inherited from class org.springframework.context.support.AbstractApplicationContext

addBeanFactoryPostProcessor, addListener, close, containsBean, containsBeanDefinition, containsLocalBean, destroy, destroyBeans, doClose, getAliases, getAutowireCapableBeanFactory, getBean, getBean, getBeanDefinitionCount, getBeanDefinitionNames, getBeanFactoryPostProcessors, getBeanNamesForType, getBeanNamesForType, getBeansOfType, getBeansOfType, getDisplayName, getInternalParentBeanFactory, getInternalParentMessageSource, getLifecycleBeans, getMessage, getMessage, getMessage, getParent, getParentBeanFactory, getResourcePatternResolver, getResources, getStartupDate, getType, isActive, isPrototype, isRunning, isSingleton, isTypeMatch, onClose, onRefresh, postProcessBeanFactory, publishEvent, refresh, registerShutdownHook, setDisplayName, setParent, start, stop, toString

Methods inherited from class org.springframework.core.io.DefaultResourceLoader

getClassLoader, getResource, getResourceByPath, setClassLoader

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.core.io.ResourceLoader

getClassLoader, getResource

Constructor Detail

AbstractXmlApplicationContext

public AbstractXmlApplicationContext()

Create a new AbstractXmlApplicationContext with no parent.

AbstractXmlApplicationContext

public AbstractXmlApplicationContext(ApplicationContext parent)

Create a new AbstractXmlApplicationContext with the given parent context.

Parameters:

parent - the parent context

Method Detail

loadBeanDefinitions

protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory)
                            throws IOException

Loads the bean definitions via an XmlBeanDefinitionReader.

Specified by:

loadBeanDefinitions in class AbstractRefreshableApplicationContext

Parameters:

beanFactory - the bean factory to load bean definitions into

Throws:

IOException - if loading of bean definition files failed

See Also:

XmlBeanDefinitionReader, initBeanDefinitionReader(org.springframework.beans.factory.xml.XmlBeanDefinitionReader), loadBeanDefinitions(org.springframework.beans.factory.support.DefaultListableBeanFactory)

initBeanDefinitionReader

protected void initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader)

Initialize the bean definition reader used for loading the bean definitions of this context. Default implementation is empty.

Can be overridden in subclasses, e.g. for turning off XML validation or using a different XmlBeanDefinitionParser implementation.

Parameters:

beanDefinitionReader - the bean definition reader used by this context

See Also:

XmlBeanDefinitionReader.setDocumentReaderClass(java.lang.Class)

loadBeanDefinitions

protected void loadBeanDefinitions(XmlBeanDefinitionReader reader)
                            throws BeansException,
                                   IOException

Load the bean definitions with the given XmlBeanDefinitionReader.

The lifecycle of the bean factory is handled by the AbstractRefreshableApplicationContext.refreshBeanFactory() method; hence this method is just supposed to load and/or register bean definitions.

Parameters:

reader - the XmlBeanDefinitionReader to use

Throws:

BeansException - in case of bean registration errors

IOException - if the required XML document isn't found

See Also:

AbstractRefreshableApplicationContext.refreshBeanFactory(), getConfigLocations(), AbstractApplicationContext.getResources(java.lang.String), AbstractApplicationContext.getResourcePatternResolver()

getConfigResources

protected Resource[] getConfigResources()

Return an array of Resource objects, referring to the XML bean definition files that this context should be built with.

The default implementation returns null. Subclasses can override this to provide pre-built Resource objects rather than location Strings.

Returns:

an array of Resource objects, or null if none

See Also:

getConfigLocations()

getConfigLocations

protected String[] getConfigLocations()

Return an array of resource locations, referring to the XML bean definition files that this context should be built with. Can also include location patterns, which will get resolved via a ResourcePatternResolver.

The default implementation returns null. Subclasses can override this to provide a set of resource locations to load bean definitions from.

Returns:

an array of resource locations, or null if none

See Also:

AbstractApplicationContext.getResources(java.lang.String), AbstractApplicationContext.getResourcePatternResolver()