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 document reading to an implementation of the BeanDefinitionDocumentReader interface.

Typically applied to a DefaultListableBeanFactory or a GenericApplicationContext.

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

Since:

26.11.2003

Author:

Juergen Hoeller, Rob Harrop

See Also:

setDocumentReaderClass(java.lang.Class), BeanDefinitionDocumentReader, DefaultBeanDefinitionDocumentReader, BeanDefinitionRegistry, DefaultListableBeanFactory, GenericApplicationContext

Field Summary

static int	VALIDATION_AUTO Indicates that the validation mode should be detected automatically.
static int	VALIDATION_DTD Indicates that DTD validation should be used.
static int	VALIDATION_NONE Indicates that the validation should be disabled.
static int	VALIDATION_XSD Indicates that XSD validation should be used.

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 BeanDefinitionDocumentReader	createBeanDefinitionDocumentReader() Create the BeanDefinitionDocumentReader to use for actually reading bean definitions from an XML document.
protected NamespaceHandlerResolver	createDefaultNamespaceHandlerResolver() Create the default implementation of NamespaceHandlerResolver used if none is specified.
protected XmlReaderContext	createReaderContext(Resource resource) Create the XmlReaderContext to pass over to the document reader.
protected int	detectValidationMode(Resource resource) Detects which kind of validation to perform on the XML file identified by the supplied Resource.
protected int	doLoadBeanDefinitions(InputSource inputSource, Resource resource) Actually load bean definitions from the specified XML file.
protected EntityResolver	getEntityResolver() Return the EntityResolver to use, building a default resolver if none specified.
int	loadBeanDefinitions(EncodedResource encodedResource) Load bean definitions from the specified XML file.
int	loadBeanDefinitions(InputSource inputSource) Load bean definitions from the specified XML file.
int	loadBeanDefinitions(InputSource inputSource, String resourceDescription) Load bean definitions from the specified XML file.
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	setDocumentLoader(DocumentLoader documentLoader) Specify the DocumentLoader to use.
void	setDocumentReaderClass(Class documentReaderClass) Specify the BeanDefinitionDocumentReader implementation to use, responsible for the actual reading of the XML bean definition 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	setEventListener(ReaderEventListener eventListener) Specify which ReaderEventListener to use.
void	setNamespaceAware(boolean namespaceAware) Set whether or not the XML parser should be XML namespace aware.
void	setNamespaceHandlerResolver(NamespaceHandlerResolver namespaceHandlerResolver) Specify the NamespaceHandlerResolver to use.
void	setParserClass(Class parserClass) Deprecated. as of Spring 2.0: superseded by "documentReaderClass"
void	setProblemReporter(ProblemReporter problemReporter) Specify which ProblemReporter to use.
void	setSourceExtractor(SourceExtractor sourceExtractor) Specify the SourceExtractor to use.
void	setValidating(boolean validating) Deprecated. as of Spring 2.0: superseded by "validationMode"
void	setValidationMode(int validationMode) Set the validation mode to use.
void	setValidationModeName(String validationModeName) Set the validation mode to use by name.

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

getBeanClassLoader, getBeanFactory, getBeanNameGenerator, getResourceLoader, loadBeanDefinitions, loadBeanDefinitions, loadBeanDefinitions, setBeanClassLoader, setBeanNameGenerator, setResourceLoader

Methods inherited from class java.lang.Object

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

Field Detail

VALIDATION_NONE

public static final int VALIDATION_NONE

Indicates that the validation should be disabled.

See Also:

Constant Field Values

VALIDATION_AUTO

public static final int VALIDATION_AUTO

Indicates that the validation mode should be detected automatically.

See Also:

Constant Field Values

VALIDATION_DTD

public static final int VALIDATION_DTD

Indicates that DTD validation should be used.

See Also:

Constant Field Values

VALIDATION_XSD

public static final int VALIDATION_XSD

Indicates that XSD validation should be used.

See Also:

Constant Field Values

Constructor Detail

XmlBeanDefinitionReader

public XmlBeanDefinitionReader(BeanDefinitionRegistry beanFactory)

Create new XmlBeanDefinitionReader for the given bean factory.

Parameters:

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

Method Detail

setNamespaceAware

public void setNamespaceAware(boolean namespaceAware)

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

setValidating

public void setValidating(boolean validating)

Deprecated. as of Spring 2.0: superseded by "validationMode"

Set if the XML parser should validate the document and thus enforce a DTD.

See Also:

setValidationMode(int)

setValidationModeName

public void setValidationModeName(String validationModeName)

Set the validation mode to use by name. Defaults to VALIDATION_AUTO.

setValidationMode

public void setValidationMode(int validationMode)

Set the validation mode to use. Defaults to VALIDATION_AUTO.

setProblemReporter

public void setProblemReporter(ProblemReporter problemReporter)

Specify which ProblemReporter to use. Default implementation is FailFastProblemReporter which exhibits fail fast behaviour. External tools can provide an alternative implementation that collates errors and warnings for display in the tool UI.

setEventListener

public void setEventListener(ReaderEventListener eventListener)

Specify which ReaderEventListener to use. Default implementation is EmptyReaderEventListener which discards every event notification. External tools can provide an alternative implementation to monitor the components being registered in the BeanFactory.

setSourceExtractor

public void setSourceExtractor(SourceExtractor sourceExtractor)

Specify the SourceExtractor to use. The default implementation is NullSourceExtractor which simply returns null as the source object. This means that during normal runtime execution no additional source metadata is attached to the bean configuration metadata.

setNamespaceHandlerResolver

public void setNamespaceHandlerResolver(NamespaceHandlerResolver namespaceHandlerResolver)

Specify the NamespaceHandlerResolver to use. If none is specified a default instance will be created by createDefaultNamespaceHandlerResolver().

setDocumentLoader

public void setDocumentLoader(DocumentLoader documentLoader)

Specify the DocumentLoader to use. The default implementation is DefaultDocumentLoader which loads Document instances using JAXP.

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

getEntityResolver

protected EntityResolver getEntityResolver()

Return the EntityResolver to use, building a default resolver if none specified.

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

setParserClass

public void setParserClass(Class parserClass)

Deprecated. as of Spring 2.0: superseded by "documentReaderClass"

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

See Also:

setDocumentReaderClass(java.lang.Class), XmlBeanDefinitionParser

setDocumentReaderClass

public void setDocumentReaderClass(Class documentReaderClass)

Specify the BeanDefinitionDocumentReader implementation to use, responsible for the actual reading of the XML bean definition document.

Default is DefaultBeanDefinitionDocumentReader.

Parameters:

documentReaderClass - the desired BeanDefinitionDocumentReader implementation class

See Also:

BeanDefinitionDocumentReader, DefaultBeanDefinitionDocumentReader

loadBeanDefinitions

public int loadBeanDefinitions(Resource resource)
                        throws BeanDefinitionStoreException

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

loadBeanDefinitions

public int loadBeanDefinitions(EncodedResource encodedResource)
                        throws BeanDefinitionStoreException

Load bean definitions from the specified XML file.

Parameters:

encodedResource - the resource descriptor for the XML file, allowing to specify an encoding to use for parsing the file

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

loadBeanDefinitions

public int loadBeanDefinitions(InputSource inputSource)
                        throws BeanDefinitionStoreException

Load bean definitions from the specified XML file.

Parameters:

inputSource - the SAX InputSource to read from

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

loadBeanDefinitions

public int loadBeanDefinitions(InputSource inputSource,
                               String resourceDescription)
                        throws BeanDefinitionStoreException

Load bean definitions from the specified XML file.

Parameters:

inputSource - the SAX InputSource to read from

resourceDescription - a description of the resource (can be null or empty)

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

doLoadBeanDefinitions

protected int doLoadBeanDefinitions(InputSource inputSource,
                                    Resource resource)
                             throws BeanDefinitionStoreException

Actually load bean definitions from the specified XML file.

Parameters:

inputSource - the SAX InputSource to read from

resource - the resource descriptor for the XML file

Returns:

the number of bean definitions found

Throws:

BeanDefinitionStoreException - in case of loading or parsing errors

detectValidationMode

protected int detectValidationMode(Resource resource)

Detects which kind of validation to perform on the XML file identified by the supplied Resource. If the file has a DOCTYPE definition then DTD validation is used otherwise XSD validation is assumed.

registerBeanDefinitions

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

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:

BeanDefinitionStoreException - in case of parsing errors

See Also:

loadBeanDefinitions(org.springframework.core.io.Resource), setDocumentReaderClass(java.lang.Class), BeanDefinitionDocumentReader.registerBeanDefinitions(org.w3c.dom.Document, org.springframework.beans.factory.xml.XmlReaderContext)

createBeanDefinitionDocumentReader

protected BeanDefinitionDocumentReader createBeanDefinitionDocumentReader()

Create the BeanDefinitionDocumentReader to use for actually reading bean definitions from an XML document.

Default implementation instantiates the specified "documentReaderClass".

See Also:

setDocumentReaderClass(java.lang.Class)

createReaderContext

protected XmlReaderContext createReaderContext(Resource resource)

Create the XmlReaderContext to pass over to the document reader.

createDefaultNamespaceHandlerResolver

protected NamespaceHandlerResolver createDefaultNamespaceHandlerResolver()

Create the default implementation of NamespaceHandlerResolver used if none is specified. Default implementation returns an instance of DefaultNamespaceHandlerResolver.