org.eclipse.persistence.mappings
Class AttributeAccessor

java.lang.Object
  org.eclipse.persistence.mappings.AttributeAccessor

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

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

public abstract class AttributeAccessor
extends java.lang.Object
implements java.lang.Cloneable, java.io.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

protected java.lang.String	attributeName Stores the name of the attribute
protected boolean	isReadOnly
protected boolean	isWriteOnly

Constructor Summary

AttributeAccessor()

Method Summary

java.lang.Object	clone() INTERNAL: Clones itself.
java.lang.Class	getAttributeClass() Return the class type of the attribute.
java.lang.String	getAttributeName() INTERNAL: Return the attribute name.
abstract java.lang.Object	getAttributeValueFromObject(java.lang.Object object) Return the attribute value from the object.
void	initializeAttributes(java.lang.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(java.lang.String attributeName) INTERNAL: Set the attribute name.
abstract void	setAttributeValueInObject(java.lang.Object object, java.lang.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 java.lang.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 java.lang.Object clone()

INTERNAL: Clones itself.

Overrides:

clone in class java.lang.Object

getAttributeName

public java.lang.String getAttributeName()

INTERNAL: Return the attribute name.

setAttributeName

public void setAttributeName(java.lang.String attributeName)

INTERNAL: Set the attribute name.

getAttributeClass

public java.lang.Class getAttributeClass()

Return the class type of the attribute.

initializeAttributes

public void initializeAttributes(java.lang.Class descriptorClass)
                          throws DescriptorException

Allow any initialization to be performed with the descriptor class.

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()

isMapValueAttributeAccessor

public boolean isMapValueAttributeAccessor()

isMethodAttributeAccessor

public boolean isMethodAttributeAccessor()

isValuesAccessor

public boolean isValuesAccessor()

isVirtualAttributeAccessor

public boolean isVirtualAttributeAccessor()

isWriteOnly

public boolean isWriteOnly()

INTERNAL:

Returns:

setIsWriteOnly

public void setIsWriteOnly(boolean aBoolean)

INTERNAL:

Parameters:

aBoolean -

isReadOnly

public boolean isReadOnly()

INTERNAL

Returns:

setIsReadOnly

public void setIsReadOnly(boolean aBoolean)

INTERNAL

Parameters:

aBoolean -

getAttributeValueFromObject

public abstract java.lang.Object getAttributeValueFromObject(java.lang.Object object)
                                                      throws DescriptorException

Return the attribute value from the object.

Throws:

DescriptorException

setAttributeValueInObject

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

Set the attribute value into the object.

Throws:

DescriptorException