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:

java.io.Serializable, Loador<E>

Direct Known Subclasses:

EntityLoador

public class BeanPropertyLoador<E>
extends java.lang.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 java.beans.PropertyDescriptor[]	descriptors
protected java.lang.Class<E>	klass
protected java.util.List<java.lang.String>	properties
protected static java.lang.Integer	ZERO
protected static java.lang.Byte	ZEROB
protected static java.lang.Double	ZEROD
protected static java.lang.Float	ZEROF
protected static java.lang.Long	ZEROL

Constructor Summary

protected

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

Method Summary

protected void	checkProperties()
java.beans.PropertyDescriptor[]	getDescriptors()
protected static java.lang.Object	getNullValue(java.lang.Class<?> type) Deprecated. use TopiaEntityHelper.getNullValue(Class)
java.util.List<java.lang.String>	getProperties()
static boolean	isNullValue(java.lang.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(java.lang.Class<E> klass, java.lang.String... properties)
java.util.Map<java.lang.String,java.lang.Object>	obtainProgperties(E from) Deprecated.
java.util.Map<java.lang.String,java.lang.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, java.beans.PropertyDescriptor descriptor, java.lang.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 java.lang.Integer ZERO

ZEROF

protected static final java.lang.Float ZEROF

ZEROL

protected static final java.lang.Long ZEROL

ZEROD

protected static final java.lang.Double ZEROD

ZEROB

protected static final java.lang.Byte ZEROB

properties

protected java.util.List<java.lang.String> properties

descriptors

protected transient java.beans.PropertyDescriptor[] descriptors

klass

protected java.lang.Class<E> klass

Constructor Detail

BeanPropertyLoador

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

Method Detail

newLoador

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

getProperties

public java.util.List<java.lang.String> getProperties()

getDescriptors

public java.beans.PropertyDescriptor[] getDescriptors()

obtainProperties

public java.util.Map<java.lang.String,java.lang.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 java.util.Map<java.lang.String,java.lang.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,
                           java.beans.PropertyDescriptor descriptor,
                           java.lang.Object value)

getNullValue

@Deprecated
protected static java.lang.Object getNullValue(java.lang.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(java.lang.Object value)

Deprecated. use TopiaEntityHelper.isNullValue(Object)

Parameters:

value - the value to test

Returns:

true if value is null

checkProperties

protected void checkProperties()