org.eclipse.persistence.mappings

Class AttributeAccessor

java.lang.Object

org.eclipse.persistence.mappings.AttributeAccessor

All Implemented Interfaces:

Serializable, Cloneable, CoreAttributeAccessor

Direct Known Subclasses:

org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor, SDOFragmentMappingAttributeAccessor

public abstract class AttributeAccessor
extends Object
implements CoreAttributeAccessor, Cloneable, Serializable

Purpose: This provides an abstract class for setting and retrieving the attribute value for the mapping from an object. It can be used in advanced situations if the attribute requires advanced conversion of the mapping value, or a real attribute does not exist.

See Also:

Serialized Form

Author:

James

Since:

OracleAS TopLink 10g (10.0.3)

Field Summary

Fields

Modifier and Type	Field and Description
protected String	attributeName Stores the name of the attribute
protected boolean	isReadOnly
protected boolean	isWriteOnly

Constructor Summary

Constructors

Constructor and Description
AttributeAccessor()

Method Summary

Modifier and Type	Method and Description
Object	clone() INTERNAL: Clones itself.
Class	getAttributeClass() Return the class type of the attribute.
String	getAttributeName() INTERNAL: Return the attribute name.
abstract Object	getAttributeValueFromObject(Object object) Return the attribute value from the object.
void	initializeAttributes(Class descriptorClass) Allow any initialization to be performed with the descriptor class.
boolean	isInitialized() Returns true if this attribute accessor has been initialized and now stores a reference to the class's attribute.
boolean	isInstanceVariableAttributeAccessor()
boolean	isMapValueAttributeAccessor()
boolean	isMethodAttributeAccessor()
boolean	isReadOnly() INTERNAL
boolean	isValuesAccessor()
boolean	isVirtualAttributeAccessor()
boolean	isWriteOnly() INTERNAL:
void	setAttributeName(String attributeName) INTERNAL: Set the attribute name.
abstract void	setAttributeValueInObject(Object object, Object value) Set the attribute value into the object.
void	setIsReadOnly(boolean aBoolean) INTERNAL
void	setIsWriteOnly(boolean aBoolean) INTERNAL:

Methods inherited from class java.lang.Object

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

Field Detail

attributeName

protected String attributeName

Stores the name of the attribute

isWriteOnly

protected boolean isWriteOnly

isReadOnly

protected boolean isReadOnly

Constructor Detail

AttributeAccessor

public AttributeAccessor()

Method Detail

clone

public Object clone()

INTERNAL: Clones itself.

Overrides:

clone in class Object

getAttributeName

public String getAttributeName()

INTERNAL: Return the attribute name.

Specified by:

getAttributeName in interface CoreAttributeAccessor

setAttributeName

public void setAttributeName(String attributeName)

INTERNAL: Set the attribute name.

getAttributeClass

public Class getAttributeClass()

Return the class type of the attribute.

Specified by:

getAttributeClass in interface CoreAttributeAccessor

initializeAttributes

public void initializeAttributes(Class descriptorClass)
                          throws DescriptorException

Allow any initialization to be performed with the descriptor class.

Specified by:

initializeAttributes in interface CoreAttributeAccessor

Throws:

DescriptorException

isInitialized

public boolean isInitialized()

Returns true if this attribute accessor has been initialized and now stores a reference to the class's attribute. An attribute accessor can become uninitialized on serialization.

isInstanceVariableAttributeAccessor

public boolean isInstanceVariableAttributeAccessor()

Specified by:

isInstanceVariableAttributeAccessor in interface CoreAttributeAccessor

isMapValueAttributeAccessor

public boolean isMapValueAttributeAccessor()

isMethodAttributeAccessor

public boolean isMethodAttributeAccessor()

Specified by:

isMethodAttributeAccessor in interface CoreAttributeAccessor

isValuesAccessor

public boolean isValuesAccessor()

isVirtualAttributeAccessor

public boolean isVirtualAttributeAccessor()

isWriteOnly

public boolean isWriteOnly()

INTERNAL:

Specified by:

isWriteOnly in interface CoreAttributeAccessor

Returns:

setIsWriteOnly

public void setIsWriteOnly(boolean aBoolean)

INTERNAL:

Specified by:

setIsWriteOnly in interface CoreAttributeAccessor

Parameters:

aBoolean -

isReadOnly

public boolean isReadOnly()

INTERNAL

Returns:

setIsReadOnly

public void setIsReadOnly(boolean aBoolean)

INTERNAL

Specified by:

setIsReadOnly in interface CoreAttributeAccessor

Parameters:

aBoolean -

getAttributeValueFromObject

public abstract Object getAttributeValueFromObject(Object object)
                                            throws DescriptorException

Return the attribute value from the object.

Specified by:

getAttributeValueFromObject in interface CoreAttributeAccessor

Throws:

DescriptorException

setAttributeValueInObject

public abstract void setAttributeValueInObject(Object object,
                                               Object value)
                                        throws DescriptorException

Set the attribute value into the object.

Specified by:

setAttributeValueInObject in interface CoreAttributeAccessor

Throws:

DescriptorException