Class RegistryMatcher

java.lang.Object

org.simpleframework.xml.transform.RegistryMatcher

All Implemented Interfaces:

Matcher

public class RegistryMatcher
extends Object
implements Matcher

The RegistryMatcher provides a simple matcher backed by a registry. Registration can be done to match a type to a Transform class or instance. If a transform class is registered an instance of it is created when requested using the default no argument constructor of the type, it is then cached so it can be reused on future requests.

Author:

Niall Gallagher

See Also:

• Persister

Constructor Summary

Constructors

Constructor	Description
RegistryMatcher()	Constructor for the RegistryMatcher.

Method Summary

Modifier and Type	Method	Description
void	bind(Class type, Class transform)	This is used to bind a Transform type.
void	bind(Class type, Transform transform)	This is used to bind a Transform instance to the specified type.
Transform	match(Class type)	This is used to match a Transform using the type specified.

Methods inherited from class Object

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

Constructor Details

RegistryMatcher

public RegistryMatcher()

Constructor for the RegistryMatcher. This is used to create a matcher instance that can resolve a transform by type and can also instantiate new transforms if required. It is essentially a convenience implementation.

Method Details

bind

public void bind(Class type,
 Class transform)

This is used to bind a Transform type. The first time a transform is requested for the specified type a new instance of this Transform will be instantiated.

Parameters:

type - this is the type to resolve the transform for

transform - this is the transform type to instantiate

bind

public void bind(Class type,
 Transform transform)

This is used to bind a Transform instance to the specified type. Each time a transform is requested for this type the provided instance will be returned.

Parameters:

type - this is the type to resolve the transform for

transform - this transform instance to be used

match

public Transform match(Class type)
                throws Exception

This is used to match a Transform using the type specified. If no transform can be acquired then this returns a null value indicating that no transform could be found.

Specified by:

match in interface Matcher

Parameters:

type - this is the type to acquire the transform for

Returns:

returns a transform for processing the type given

Throws:

Exception