weka.core

Class EnumHelper

java.lang.Object

weka.core.EnumHelper

public class EnumHelper
extends java.lang.Object

Helper/wrapper class for obtaining an arbitrary enum value from an arbitrary enum type. An enum value wrapped in this class can be serialized by Weka's XML serialization mechanism.

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Constructor Summary

Constructors

Constructor and Description
EnumHelper() No-op constructor (for beans conformity)
EnumHelper(java.lang.Enum e) Constructor

Method Summary

Modifier and Type	Method and Description
java.lang.String	getEnumClass() Get the fully qualified enum class name
java.lang.String	getSelectedEnumValue() Get the selected/wrapped enum value (as obtained by calling toString() on the enum value)
static void	main(java.lang.String[] args) Main method for testing this class
void	setEnumClass(java.lang.String enumClass) Set the fully qualified enum class name
void	setSelectedEnumValue(java.lang.String selectedEnumValue) Set the selected/wrapped enum value (as obtained by calling toString() on the enum value)
static java.lang.Object	valueFromString(java.lang.Class<?> enumClass, java.lang.String enumValue) Helper method to recover an enum value given the fully qualified name of the enum and the value in question as strings
static java.lang.Object	valueFromString(java.lang.String enumClass, java.lang.String enumValue) Helper method to recover an enum value given the fully qualified name of the enum and the value in question as strings

Methods inherited from class java.lang.Object

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

Constructor Detail

EnumHelper

public EnumHelper(java.lang.Enum e)

Constructor

Parameters:

e - the enum value to wrap

EnumHelper

public EnumHelper()

No-op constructor (for beans conformity)

Method Detail

setEnumClass

public void setEnumClass(java.lang.String enumClass)

Set the fully qualified enum class name

Parameters:

enumClass - the fully qualified name of the enum class

getEnumClass

public java.lang.String getEnumClass()

Get the fully qualified enum class name

Returns:

the fully qualified name of the enum class

setSelectedEnumValue

public void setSelectedEnumValue(java.lang.String selectedEnumValue)

Set the selected/wrapped enum value (as obtained by calling toString() on the enum value)

Parameters:

selectedEnumValue - the enum value to wrap

getSelectedEnumValue

public java.lang.String getSelectedEnumValue()

Get the selected/wrapped enum value (as obtained by calling toString() on the enum value)

Returns:

the enum value to wrap

valueFromString

public static java.lang.Object valueFromString(java.lang.String enumClass,
                                               java.lang.String enumValue)
                                        throws java.lang.Exception

Helper method to recover an enum value given the fully qualified name of the enum and the value in question as strings

Parameters:

enumClass - a string containing the fully qualified name of the enum class

enumValue - a string containing the value of the enum to find

Returns:

the enum value as an Object

Throws:

java.lang.Exception - if a problem occurs

valueFromString

public static java.lang.Object valueFromString(java.lang.Class<?> enumClass,
                                               java.lang.String enumValue)
                                        throws java.lang.Exception

Helper method to recover an enum value given the fully qualified name of the enum and the value in question as strings

Parameters:

enumClass - the class of the enum

enumValue - a string containing the value of the enum to find

Returns:

the enum value as an Object

Throws:

java.lang.Exception - if a problem occurs

main

public static void main(java.lang.String[] args)

Main method for testing this class

Parameters:

args - arguments