org.nuiton.topia.persistence.util
Class BeanPropertyLoador<E>

java.lang.Object
  org.nuiton.topia.persistence.util.BeanPropertyLoador<E>

Type Parameters:

E - type of bean to bind

All Implemented Interfaces:

Serializable, Loador<E>

Direct Known Subclasses:

EntityLoador

public class BeanPropertyLoador<E>
extends Object
implements Loador<E>

A implementation fo the Loador contract using PropertyDescriptor.

Some factory methods are defined to simplify the generic cast, prefer used them instead of the (protected) constructor.

Author:

chemit

See Also:

Serialized Form

Field Summary

protected PropertyDescriptor[]	descriptors
protected Class<E>	klass
protected List<String>	properties
protected static Integer	ZERO
protected static Byte	ZEROB
protected static Double	ZEROD
protected static Float	ZEROF
protected static Long	ZEROL

Constructor Summary

protected

BeanPropertyLoador(Class<E> klass, String... properties)

Method Summary

protected void	checkProperties()
PropertyDescriptor[]	getDescriptors()
protected static Object	getNullValue(Class<?> type) Deprecated. use TopiaEntityHelper.getNullValue(Class)
List<String>	getProperties()
static boolean	isNullValue(Object value) Deprecated. use TopiaEntityHelper.isNullValue(Object)
void	load(E from, E dst, boolean tech) Bind an entity to another.
static <E> BeanPropertyLoador<E>	newLoador(Class<E> klass, String... properties)
Map<String,Object>	obtainProgperties(E from) Deprecated.
Map<String,Object>	obtainProperties(E from) Obtain from an entity all data to bind to another one according the definition of the loador.
protected void	setProperty(E dst, PropertyDescriptor descriptor, Object value)

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

protected static final Integer ZERO

ZEROF

protected static final Float ZEROF

ZEROL

protected static final Long ZEROL

ZEROD

protected static final Double ZEROD

ZEROB

protected static final Byte ZEROB

properties

protected List<String> properties

descriptors

protected transient PropertyDescriptor[] descriptors

klass

protected Class<E> klass

Constructor Detail

BeanPropertyLoador

protected BeanPropertyLoador(Class<E> klass,
                             String... properties)

Method Detail

newLoador

public static <E> BeanPropertyLoador<E> newLoador(Class<E> klass,
                                                  String... properties)

getProperties

public List<String> getProperties()

getDescriptors

public PropertyDescriptor[] getDescriptors()

obtainProperties

public Map<String,Object> obtainProperties(E from)

Description copied from interface: Loador

Obtain from an entity all data to bind to another one according the definition of the loador.

This method is usefull when you can not directly used the Loador.load(Object, Object, boolean) method.

For example, when an entity has a immutable business key (says with an hibernate naturalId for example), and that you want to create the data in a db, you must give all the properties at the create time so this method allow you to do it).

Specified by:

obtainProperties in interface Loador<E>

Parameters:

from - the entity to bind

Returns:

the map of properties to bind from the given entity.

obtainProgperties

@Deprecated
public Map<String,Object> obtainProgperties(E from)

Deprecated.

Specified by:

obtainProgperties in interface Loador<E>

load

public void load(E from,
                 E dst,
                 boolean tech)

Description copied from interface: Loador

Bind an entity to another.

Specified by:

load in interface Loador<E>

Parameters:

from - the source entity

dst - the destination entity

tech - a flag to bind or not the technical values of the entity (says TopiaId, TopiaVersion and TopiaCreateDate).

setProperty

protected void setProperty(E dst,
                           PropertyDescriptor descriptor,
                           Object value)

getNullValue

@Deprecated
protected static Object getNullValue(Class<?> type)

Deprecated. use TopiaEntityHelper.getNullValue(Class)

Parameters:

type - type to test

Returns:

the null value for the given type

isNullValue

@Deprecated
public static boolean isNullValue(Object value)

Deprecated. use TopiaEntityHelper.isNullValue(Object)

Parameters:

value - the value to test

Returns:

true if value is null

checkProperties

protected void checkProperties()