org.springframework.beans.factory.xml
Class XmlBeanDefinitionReader

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

All Implemented Interfaces:

BeanDefinitionReader

public class XmlBeanDefinitionReader
extends AbstractBeanDefinitionReader

Bean definition reader for XML bean definitions. Delegates the actual XML parsing to an implementation of the XmlBeanDefinitionParser interface. Typically applied to a DefaultListableBeanFactory.

This class loads a DOM document and applies the bean definition parser to it. The parser will register each bean definition with the given bean factory, relying on the latter's implementation of the BeanDefinitionRegistry interface.

Since:

26.11.2003

Author:

Juergen Hoeller

See Also:

setParserClass(java.lang.Class), XmlBeanDefinitionParser, DefaultXmlBeanDefinitionParser, BeanDefinitionRegistry, DefaultListableBeanFactory

Field Summary

Fields inherited from class org.springframework.beans.factory.support.AbstractBeanDefinitionReader

logger

Constructor Summary

XmlBeanDefinitionReader(BeanDefinitionRegistry beanFactory)
Create new XmlBeanDefinitionReader for the given bean factory.

Method Summary

protected DocumentBuilder	createDocumentBuilder(DocumentBuilderFactory factory) Create a JAXP DocumentBuilder that this bean definition reader will use for parsing XML documents.
protected DocumentBuilderFactory	createDocumentBuilderFactory() Create a JAXP DocumentBuilderFactory that this bean definition reader will use for parsing XML documents.
int	loadBeanDefinitions(Resource resource) Load bean definitions from the specified XML file.
int	registerBeanDefinitions(Document doc, Resource resource) Register the bean definitions contained in the given DOM document.
void	setEntityResolver(EntityResolver entityResolver) Set a SAX entity resolver to be used for parsing.
void	setErrorHandler(ErrorHandler errorHandler) Set an implementation of the org.xml.sax.ErrorHandler interface for custom handling of XML parsing errors and warnings.
void	setNamespaceAware(boolean namespaceAware) Set whether or not the XML parser should be XML namespace aware.
void	setParserClass(Class parserClass) Set the XmlBeanDefinitionParser implementation to use, responsible for the actual parsing of XML bean definitions.
void	setValidating(boolean validating) Set if the XML parser should validate the document and thus enforce a DTD.

Methods inherited from class org.springframework.beans.factory.support.AbstractBeanDefinitionReader

getBeanClassLoader, getBeanFactory, getResourceLoader, loadBeanDefinitions, setBeanClassLoader, setResourceLoader

Methods inherited from class java.lang.Object

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

Constructor Detail

XmlBeanDefinitionReader

public XmlBeanDefinitionReader(BeanDefinitionRegistry beanFactory)

Create new XmlBeanDefinitionReader for the given bean factory.

Method Detail

setValidating

public void setValidating(boolean validating)

Set if the XML parser should validate the document and thus enforce a DTD. Default is "true".

setNamespaceAware

public void setNamespaceAware(boolean namespaceAware)

Set whether or not the XML parser should be XML namespace aware. Default is "false".

setErrorHandler

public void setErrorHandler(ErrorHandler errorHandler)

Set an implementation of the org.xml.sax.ErrorHandler interface for custom handling of XML parsing errors and warnings.

If not set, a default SimpleSaxErrorHandler is used that simply logs warnings using the logger instance of the view class, and rethrows errors to discontinue the XML transformation.

See Also:

SimpleSaxErrorHandler

setEntityResolver

public void setEntityResolver(EntityResolver entityResolver)

Set a SAX entity resolver to be used for parsing. By default, BeansDtdResolver will be used. Can be overridden for custom entity resolution, for example relative to some specific base path.

See Also:

BeansDtdResolver

setParserClass

public void setParserClass(Class parserClass)

Set the XmlBeanDefinitionParser implementation to use, responsible for the actual parsing of XML bean definitions. Default is DefaultXmlBeanDefinitionParser.

See Also:

XmlBeanDefinitionParser, DefaultXmlBeanDefinitionParser

loadBeanDefinitions

public int loadBeanDefinitions(Resource resource)
                        throws BeansException

Load bean definitions from the specified XML file.

Parameters:

resource - the resource descriptor for the XML file

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

BeansException

createDocumentBuilderFactory

protected DocumentBuilderFactory createDocumentBuilderFactory()
                                                       throws ParserConfigurationException

Create a JAXP DocumentBuilderFactory that this bean definition reader will use for parsing XML documents. Can be overridden in subclasses, adding further initialization of the factory.

Returns:

the JAXP DocumentBuilderFactory

Throws:

ParserConfigurationException - if thrown by JAXP methods

createDocumentBuilder

protected DocumentBuilder createDocumentBuilder(DocumentBuilderFactory factory)
                                         throws ParserConfigurationException

Create a JAXP DocumentBuilder that this bean definition reader will use for parsing XML documents. Can be overridden in subclasses, adding further initialization of the builder.

Parameters:

factory - the JAXP DocumentBuilderFactory that the DocumentBuilder should be created with

Returns:

the JAXP DocumentBuilder

Throws:

ParserConfigurationException - if thrown by JAXP methods

registerBeanDefinitions

public int registerBeanDefinitions(Document doc,
                                   Resource resource)
                            throws BeansException

Register the bean definitions contained in the given DOM document. Called by loadBeanDefinitions.

Creates a new instance of the parser class and invokes registerBeanDefinitions on it.

Parameters:

doc - the DOM document

resource - the resource descriptor (for context information)

Returns:

the number of bean definitions found

Throws:

BeansException - in case of parser instantiation failure

BeanDefinitionStoreException - in case of parsing errors

See Also:

loadBeanDefinitions(org.springframework.core.io.Resource), setParserClass(java.lang.Class), XmlBeanDefinitionParser.registerBeanDefinitions(org.springframework.beans.factory.support.BeanDefinitionReader, org.w3c.dom.Document, org.springframework.core.io.Resource)