org.apache.velocity.util.introspection

Class ConversionHandlerImpl

java.lang.Object

org.apache.velocity.util.introspection.ConversionHandlerImpl

All Implemented Interfaces:

ConversionHandler

public class ConversionHandlerImpl
extends Object
implements ConversionHandler

A conversion handler adds admissible conversions between Java types whenever Velocity introspection has to map VTL methods and property accessors to Java methods. This implementation is the default Conversion Handler for Velocity.

Since:

2.0

Version:

$Id: ConversionHandlerImpl.java $

Author:

Claude Brisson

Constructor Summary

Constructors

Constructor and Description
ConversionHandlerImpl() Constructor

Method Summary

Modifier and Type	Method and Description
void	addConverter(Class formal, Class actual, Converter converter) Add the given converter to the handler.
Converter	getNeededConverter(Class formal, Class actual) Returns the appropriate Converter object needed for an explicit conversion Returns null if no conversion is needed.
boolean	isExplicitlyConvertible(Class formal, Class actual, boolean possibleVarArg) Check to see if the conversion can be done using an explicit conversion

Methods inherited from class java.lang.Object

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

Constructor Detail

ConversionHandlerImpl

public ConversionHandlerImpl()

Constructor

Method Detail

isExplicitlyConvertible

public boolean isExplicitlyConvertible(Class formal,
                                       Class actual,
                                       boolean possibleVarArg)

Check to see if the conversion can be done using an explicit conversion

Specified by:

isExplicitlyConvertible in interface ConversionHandler

Parameters:

actual - found argument type

formal - expected formal type

Returns:

null if no conversion is needed, or the appropriate Converter object

Since:

2.0

getNeededConverter

public Converter getNeededConverter(Class formal,
                                    Class actual)

Returns the appropriate Converter object needed for an explicit conversion Returns null if no conversion is needed.

Specified by:

getNeededConverter in interface ConversionHandler

Parameters:

actual - found argument type

formal - expected formal type

Returns:

null if no conversion is needed, or the appropriate Converter object

Since:

2.0

addConverter

public void addConverter(Class formal,
                         Class actual,
                         Converter converter)

Add the given converter to the handler.

Specified by:

addConverter in interface ConversionHandler

Parameters:

formal - expected formal type

actual - provided argument type

converter - converter

Since:

2.0