Package org.apache.commons.collections4.functors

Class StringValueTransformer<T>

java.lang.Object

org.apache.commons.collections4.functors.StringValueTransformer<T>

Type Parameters:

T - the type of the input and result to the function.

All Implemented Interfaces:

Serializable, Function<T,String>, Transformer<T,String>

public final class StringValueTransformer<T>
extends Object
implements Transformer<T,String>, Serializable

Transformer implementation that returns the result of calling String.valueOf on the input object.

Since:

3.0

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final Transformer<Object,String>	INSTANCE	Singleton predicate instance
private static final long	serialVersionUID	Serial version UID

Constructor Summary

Constructors

Modifier	Constructor	Description
private	StringValueTransformer()	Restricted constructor.

Method Summary

Modifier and Type	Method	Description
private Object	readResolve()	Returns the singleton instance.
static <T> Transformer<T,String>	stringValueTransformer()	Factory returning the singleton instance.
String	transform(T input)	Transforms the input to result by calling String.valueOf.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface org.apache.commons.collections4.Transformer

apply

Field Details

serialVersionUID

private static final long serialVersionUID

Serial version UID

See Also:

• Constant Field Values

INSTANCE

private static final Transformer<Object,String> INSTANCE

Singleton predicate instance

Constructor Details

StringValueTransformer

private StringValueTransformer()

Restricted constructor.

Method Details

stringValueTransformer

public static <T> Transformer<T,String> stringValueTransformer()

Factory returning the singleton instance.

Type Parameters:

T - the input type

Returns:

the singleton instance

Since:

3.1

readResolve

private Object readResolve()

Returns the singleton instance.

Returns:

the singleton instance.

transform

public String transform(T input)

Transforms the input to result by calling String.valueOf.

Specified by:

transform in interface Transformer<T,String>

Parameters:

input - the input object to transform

Returns:

the transformed result