org.nuiton.converter

Class ConverterUtil

java.lang.Object

org.nuiton.converter.ConverterUtil

public class ConverterUtil
extends Object

Useful class to get / register converter from ConvertUtils or trying to get it from this package.

Since:

1.0

Author:

Tony Chemit - chemit@codelutin.com

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	CONVERTER_PACKAGE Default package where to find the converter.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ConverterUtil()

Method Summary

Modifier and Type	Method and Description
static byte[]	convert(char[] chars) Converts a array of char to an array of bytes.
static <T> T	convert(Class<T> type, Object toConvert) Try to convert a value.
static void	deregister() To remove any registered converter.
static <T> org.apache.commons.beanutils.Converter	getConverter(Class<T> type) Try to find amatching converter for the given type.
static void	initConverters() To init default converters (using the service loader mecanism on contract NuitonConverter).
static void	registerConverter(Class<?> type)
protected static void	registerConverter0(Class<?> type)
static <E extends Enum> void	registerEnumConverter(Class<E> type) Register a new converter for a given enum type, not using any default value.
static <E extends Enum> void	registerEnumConverter(Class<E> type, Object defaultValue) Register a new converter for a given enum type, using the given default value.

Methods inherited from class java.lang.Object

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

Field Detail

CONVERTER_PACKAGE

protected static final String CONVERTER_PACKAGE

Default package where to find the converter.

See Also:

Constant Field Values

Constructor Detail

ConverterUtil

protected ConverterUtil()

Method Detail

getConverter

public static <T> org.apache.commons.beanutils.Converter getConverter(Class<T> type)

Try to find amatching converter for the given type.

If required, init defaults converters (see initConverters()).

If not found and type is an enum, then will register a enum type converter.

If still not found, try to register a converter having the NuitonConverter contract named typeConverter in the current package (CONVERTER_PACKAGE).

For example with type MyType, will try to find the converter org.nuiton.converter.MyTypeConverter.

Type Parameters:

T - type to convert

Parameters:

type - type to convert

Returns:

the found converter, or null if not found

convert

public static <T> T convert(Class<T> type,
                            Object toConvert)

Try to convert a value.

Will first try to find a matching converter, if not found return then null.

Note: will init default converters or matching data type converter if required.

Type Parameters:

T - type of data to convert

Parameters:

type - type of data to convert

toConvert - data to convert

Returns:

the converted data or null if no converter found for the type of data.

registerConverter

public static void registerConverter(Class<?> type)
                              throws IllegalAccessException,
                                     InstantiationException,
                                     ClassNotFoundException

Throws:

IllegalAccessException

InstantiationException

ClassNotFoundException

registerConverter0

protected static void registerConverter0(Class<?> type)
                                  throws IllegalAccessException,
                                         InstantiationException,
                                         ClassNotFoundException

Throws:

IllegalAccessException

InstantiationException

ClassNotFoundException

registerEnumConverter

public static <E extends Enum> void registerEnumConverter(Class<E> type,
                                                          Object defaultValue)

Register a new converter for a given enum type, using the given default value.

Parameters:

type - enum type to convert

defaultValue - default value to use.

See Also:

EnumConverter

registerEnumConverter

public static <E extends Enum> void registerEnumConverter(Class<E> type)

Register a new converter for a given enum type, not using any default value.

Parameters:

type - enum type to convert

See Also:

EnumConverter

convert

public static byte[] convert(char[] chars)

Converts a array of char to an array of bytes.

TODO Find out who uses this ?

Parameters:

chars - array of characters to converter

Returns:

the array of bytes

deregister

public static void deregister()

To remove any registered converter.

At the next call to method convert(Class, Object) or getConverter(Class), default converters will be registred again.

initConverters

public static void initConverters()

To init default converters (using the service loader mecanism on contract NuitonConverter).

If was already init, then will do nothing.

Note: the getConverter(Class) or convert(Class, Object) methods always invoke this method if the class was not initialized (see the wasInit internal flag).