net.sf.basedb.util.jep.convert
Class ConverterFactory

java.lang.Object
  net.sf.basedb.util.jep.convert.ConverterFactory

public class ConverterFactory
extends Object

Keep JepConversionFunction objects for converting built-in JEP object to Query API Expression or Restriction objects.

Version:

2.4

Author:

nicklas

See Also:

JepConversionFunction

Last modified

$Date: 2008-09-11 22:08:14 +0200 (Thu, 11 Sep 2008) $

Field Summary

private static Map<Object,JepConversionFunction<?>>

converters

Constructor Summary

ConverterFactory()

Method Summary

static JepConversionFunction<?>	getConverter(Object o) Get a converter for the specified built-in JEP object.
static JepConversionFunction<?>	getConverterByClass(Object o) Get a converter for the specified built-in JEP object by checking if a converter has been registered for it's class.
static Collection<JepConversionFunction<?>>	getConverters() Get all registered converters.
static void	registerConverter(Object o, JepConversionFunction<?> converter) Add a converter for a specific object.

Methods inherited from class java.lang.Object

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

Field Detail

converters

private static Map<Object,JepConversionFunction<?>> converters

Constructor Detail

ConverterFactory

public ConverterFactory()

Method Detail

getConverter

public static JepConversionFunction<?> getConverter(Object o)

Get a converter for the specified built-in JEP object.

Parameters:

o - The object to convert

Returns:

A JepConversionFunction or null if no converter is found

getConverterByClass

public static JepConversionFunction<?> getConverterByClass(Object o)

Get a converter for the specified built-in JEP object by checking if a converter has been registered for it's class.

Parameters:

o - The object to convert

Returns:

A JepConversionFunction or null if no converter is found

registerConverter

public static void registerConverter(Object o,
                                     JepConversionFunction<?> converter)

Add a converter for a specific object. It can for example, be the class of a JEP function, the symbol for an operator:

registerConverter(Add.class, new AddConverter());
registerConverter("==", new EqualsConverter());

Parameters:

o - The object defining what the converter can convert

converter - The converter

Throws:

ItemAlreadyExistsException - If a converter already exists for the given class

getConverters

public static Collection<JepConversionFunction<?>> getConverters()

Get all registered converters.