net.sf.mmm.util.value.base

Class SimpleValueConverterIdentity<V>

java.lang.Object

net.sf.mmm.util.value.base.SimpleValueConverterIdentity<V>

Type Parameters:

V - is the generic type of the value.

All Implemented Interfaces:

SimpleValueConverter<V,V>

public class SimpleValueConverterIdentity<V>
extends Object
implements SimpleValueConverter<V,V>

This is an implementation of SimpleValueConverter that returns the unmodified value (identity conversion).

Since:

3.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
private static SimpleValueConverterIdentity	INSTANCE

Constructor Summary

Constructors

Constructor and Description
SimpleValueConverterIdentity() The constructor.

Method Summary

Modifier and Type	Method and Description
<T extends V> T	convert(V value, Object valueSource, Class<T> targetClass) This method converts the given pojo to the <TARGET>-type.
static <V> SimpleValueConverterIdentity<V>	getInstance()

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

private static final SimpleValueConverterIdentity INSTANCE

Constructor Detail

SimpleValueConverterIdentity

public SimpleValueConverterIdentity()

The constructor.

Method Detail

convert

public <T extends V> T convert(V value,
                               Object valueSource,
                               Class<T> targetClass)
                        throws ValueException

Description copied from interface: SimpleValueConverter

This method converts the given pojo to the <TARGET>-type.

Specified by:

convert in interface SimpleValueConverter<V,V>

Type Parameters:

T - is the generic type of targetClass.

Parameters:

value - is the value to convert.

valueSource - describes the source of the value. This may be the filename where the value was read from, an XPath where the value was located in an XML document, etc. It is used in exceptions thrown if something goes wrong. This will help to find the problem easier.

targetClass - is the type to convert the value to.

Returns:

the converted value or null if the conversion is NOT possible. The returned value has to be an instance of the given targetType.

Throws:

ValueException - if the conversion failed (e.g. the given value is illegal for the given targetClass).

ValueException

getInstance

public static <V> SimpleValueConverterIdentity<V> getInstance()

Type Parameters:

V - is the generic type of the value.

Returns:

the instance