de.schwarzrot.data.support
Interface Converter

All Known Implementing Classes:

BooleanConverter, ByteConverter, ColorConverter, DateConverter, DoubleConverter, EntityConverter, EnumConverter, FileConverter, FloatConverter, IntConverter, LongConverter, NullConverter, ShortConverter, StringConverter

public interface Converter

interface for property conversion between java world and persistence. Converters are requested from a ConverterFactory, with the (java-)property type as value type. The ConverterFactory is setup by ApplicationContext.

Author:

Reinhard Mantey

See Also:

EntityUtils.fillEntity(de.schwarzrot.data.Entity, de.schwarzrot.data.access.support.EntityDescriptor, de.schwarzrot.data.access.DataAccessor, de.schwarzrot.data.access.support.EntityIntrospector)

Method Summary

Object	fromPersistence(Class<?> type, Object value) convert a value from persistence into a value of the java world.
Class<?>	getValueType() returns the type, this converter cares about
Object	toPersistence(Object value, int physicalSize) convert a value from java world into a value for persistence.

Method Detail

fromPersistence

Object fromPersistence(Class<?> type,
                       Object value)

convert a value from persistence into a value of the java world.

Parameters:

type - the type of the property (target type)

value - the value from persistence

Returns:

the converted value

getValueType

Class<?> getValueType()

returns the type, this converter cares about

Returns:

a Class

toPersistence

Object toPersistence(Object value,
                     int physicalSize)

convert a value from java world into a value for persistence.

Parameters:

value - a property value

physicalSize - size of physical datafield (i.e. database column)

Returns:

the converted value