at.chrl.nutils.configuration.transformers

Class EnumTransformer

java.lang.Object

at.chrl.nutils.configuration.transformers.EnumTransformer

All Implemented Interfaces:

PropertyTransformer<Enum<?>>

public class EnumTransformer
extends Object
implements PropertyTransformer<Enum<?>>

Transforms enum string representation to enum. String must match case definition of enum, for instance:

 enum{
  FILE,
  URL
 }
 

will be parsed with string "FILE" but not "file".

Author:

SoulKeeper

Field Summary

Fields

Modifier and Type	Field and Description
static EnumTransformer	SHARED_INSTANCE Shared instance of this transformer.

Constructor Summary

Constructors

Constructor and Description
EnumTransformer()

Method Summary

Modifier and Type	Method and Description
Enum<?>	transform(String value, Field field) Transforms string to enum

Methods inherited from class java.lang.Object

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

Methods inherited from interface at.chrl.nutils.configuration.PropertyTransformer

transform

Field Detail

SHARED_INSTANCE

public static final EnumTransformer SHARED_INSTANCE

Shared instance of this transformer. It's thread-safe so no need of multiple instances

Constructor Detail

EnumTransformer

public EnumTransformer()

Method Detail

transform

public Enum<?> transform(String value,
                         Field field)
                  throws TransformationException

Transforms string to enum

Specified by:

transform in interface PropertyTransformer<Enum<?>>

Parameters:

value - value that will be transformed

field - value will be assigned to this field

Returns:

Enum object representing the value

Throws:

TransformationException - if somehting went wrong