Package org.springframework.beans.factory.xml

Class DefaultNamespaceHandlerResolver

java.lang.Object

org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver

All Implemented Interfaces:

NamespaceHandlerResolver

public class DefaultNamespaceHandlerResolver
extends Object
implements NamespaceHandlerResolver

Default implementation of the NamespaceHandlerResolver interface. Resolves namespace URIs to implementation classes based on the mappings contained in mapping file.

By default, this implementation looks for the mapping file at META-INF/spring.handlers, but this can be changed using the DefaultNamespaceHandlerResolver(ClassLoader, String) constructor.

Since:

2.0

Author:

Rob Harrop, Juergen Hoeller

See Also:

• NamespaceHandler
• DefaultBeanDefinitionDocumentReader

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_HANDLER_MAPPINGS_LOCATION	The location to look for the mapping files.
protected final Log	logger	Logger available to subclasses.

Constructor Summary

Constructors

Constructor	Description
DefaultNamespaceHandlerResolver()	Create a new DefaultNamespaceHandlerResolver using the default mapping file location.
DefaultNamespaceHandlerResolver(ClassLoader classLoader)	Create a new DefaultNamespaceHandlerResolver using the default mapping file location.
DefaultNamespaceHandlerResolver(ClassLoader classLoader, String handlerMappingsLocation)	Create a new DefaultNamespaceHandlerResolver using the supplied mapping file location.

Method Summary

Modifier and Type	Method	Description
NamespaceHandler	resolve(String namespaceUri)	Locate the NamespaceHandler for the supplied namespace URI from the configured mappings.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_HANDLER_MAPPINGS_LOCATION

public static final String DEFAULT_HANDLER_MAPPINGS_LOCATION

The location to look for the mapping files. Can be present in multiple JAR files.

See Also:

• Constant Field Values

logger

protected final Log logger

Logger available to subclasses.

Constructor Details

DefaultNamespaceHandlerResolver

public DefaultNamespaceHandlerResolver()

Create a new DefaultNamespaceHandlerResolver using the default mapping file location.

This constructor will result in the thread context ClassLoader being used to load resources.

See Also:

• DEFAULT_HANDLER_MAPPINGS_LOCATION

DefaultNamespaceHandlerResolver

public DefaultNamespaceHandlerResolver(@Nullable
 ClassLoader classLoader)

Create a new DefaultNamespaceHandlerResolver using the default mapping file location.

Parameters:

classLoader - the ClassLoader instance used to load mapping resources (may be null, in which case the thread context ClassLoader will be used)

See Also:

• DEFAULT_HANDLER_MAPPINGS_LOCATION

DefaultNamespaceHandlerResolver

public DefaultNamespaceHandlerResolver(@Nullable
 ClassLoader classLoader,
 String handlerMappingsLocation)

Create a new DefaultNamespaceHandlerResolver using the supplied mapping file location.

Parameters:

classLoader - the ClassLoader instance used to load mapping resources may be null, in which case the thread context ClassLoader will be used

handlerMappingsLocation - the mapping file location

Method Details

resolve

@Nullable
public NamespaceHandler resolve(String namespaceUri)

Locate the NamespaceHandler for the supplied namespace URI from the configured mappings.

Specified by:

resolve in interface NamespaceHandlerResolver

Parameters:

namespaceUri - the relevant namespace URI

Returns:

the located NamespaceHandler, or null if none found

toString

public String toString()

Overrides:

toString in class Object