org.javalite.activejdbc.conversion
Enum ZeroToNullConverter

java.lang.Object
  java.lang.Enum<ZeroToNullConverter>
      org.javalite.activejdbc.conversion.ZeroToNullConverter

All Implemented Interfaces:

Serializable, Comparable<ZeroToNullConverter>, Converter<Number,Object>

public enum ZeroToNullConverter
extends Enum<ZeroToNullConverter>
implements Converter<Number,Object>

Converts instances of Number that are zero to null.

Author:

Eric Nielsen

Enum Constant Summary

INSTANCE

Method Summary

boolean	canConvert(Class sourceClass, Class destinationClass) Returns true if this converter can convert instances of sourceClass to destinationClass.
Object	convert(Number source) Converts instance of S to T.
static ZeroToNullConverter	instance()
static ZeroToNullConverter	valueOf(String name) Returns the enum constant of this type with the specified name.
static ZeroToNullConverter[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INSTANCE

public static final ZeroToNullConverter INSTANCE

Method Detail

values

public static ZeroToNullConverter[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (ZeroToNullConverter c : ZeroToNullConverter.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static ZeroToNullConverter valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

instance

public static ZeroToNullConverter instance()

canConvert

public boolean canConvert(Class sourceClass,
                          Class destinationClass)

Description copied from interface: Converter

Returns true if this converter can convert instances of sourceClass to destinationClass.

Specified by:

canConvert in interface Converter<Number,Object>

Parameters:

sourceClass - source Class

destinationClass - destination Class

Returns:

true if sourceClass is a subclass of Number

convert

public Object convert(Number source)

Description copied from interface: Converter

Converts instance of S to T.

Specified by:

convert in interface Converter<Number,Object>

Parameters:

source - instance of String

Returns:

null if source.intValue() is zero, source otherwise