Package org.eclipse.persistence.mappings.converters

Class TypeConversionConverter

java.lang.Object

org.eclipse.persistence.mappings.converters.TypeConversionConverter

All Implemented Interfaces:

Serializable, CoreConverter<DatabaseMapping,Session>, org.eclipse.persistence.internal.descriptors.ClassNameConversionRequired, Converter

public class TypeConversionConverter
extends Object
implements Converter, org.eclipse.persistence.internal.descriptors.ClassNameConversionRequired

Purpose: Type conversion converters are used to explicitly map a database type to a Java type.

See Also:

Serialized Form

Author:

James Sutherland

Since:

OracleAS TopLink 10g (10.0.3)

Field Summary

Fields

Modifier and Type	Field	Description
protected Class	dataClass	Field type
protected String	dataClassName
protected DatabaseMapping	mapping
protected Class	objectClass	Object type
protected String	objectClassName

Constructor Summary

Constructors

Constructor	Description
TypeConversionConverter()	PUBLIC: Default constructor.
TypeConversionConverter(DatabaseMapping mapping)	PUBLIC: Default constructor.

Method Summary

Modifier and Type	Method	Description
void	convertClassNamesToClasses(ClassLoader classLoader)	INTERNAL: Convert all the class-name-based settings in this converter to actual class-based settings.
Object	convertDataValueToObjectValue(Object fieldValue, Session session)	INTERNAL: The field value must first be converted to the field type, then the attribute type.
Object	convertObjectValueToDataValue(Object attributeValue, Session session)	INTERNAL: Convert to the field class.
Class	getDataClass()	PUBLIC: Returns the class type of the data value.
String	getDataClassName()	INTERNAL: Return the name of the data type for the MW usage.
protected DatabaseMapping	getMapping()	INTERNAL: Return the mapping.
Class	getObjectClass()	PUBLIC: Returns the class type of the object value.
String	getObjectClassName()	INTERNAL: Return the name of the object type for the MW usage.
void	initialize(DatabaseMapping mapping, Session session)	INTERNAL: Set the mapping.
boolean	isMutable()	INTERNAL: If the converter converts the value to a non-atomic value, i.e.
void	setDataClass(Class dataClass)	PUBLIC: Set the class type of the data value.
void	setDataClassName(String dataClassName)	INTERNAL: Set the name of the data type for the MW usage.
void	setObjectClass(Class objectClass)	PUBLIC: Set the class type of the object value.
void	setObjectClassName(String objectClassName)	INTERNAL: Set the name of the object type for the MW usage.

Methods inherited from class java.lang.Object

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

Field Detail

mapping

protected DatabaseMapping mapping

dataClass

protected Class dataClass

Field type

dataClassName

protected String dataClassName

objectClass

protected Class objectClass

Object type

objectClassName

protected String objectClassName

Constructor Detail

TypeConversionConverter

public TypeConversionConverter()

PUBLIC: Default constructor.

TypeConversionConverter

public TypeConversionConverter(DatabaseMapping mapping)

PUBLIC: Default constructor.

Method Detail

convertClassNamesToClasses

public void convertClassNamesToClasses(ClassLoader classLoader)

INTERNAL: Convert all the class-name-based settings in this converter to actual class-based settings. This method is used when converting a project that has been built with class names to a project with classes. This method is implemented by subclasses as necessary.

Specified by:

convertClassNamesToClasses in interface org.eclipse.persistence.internal.descriptors.ClassNameConversionRequired

Parameters:

classLoader -

convertDataValueToObjectValue

public Object convertDataValueToObjectValue(Object fieldValue,
                                            Session session)

INTERNAL: The field value must first be converted to the field type, then the attribute type.

Specified by:

convertDataValueToObjectValue in interface Converter

Specified by:

convertDataValueToObjectValue in interface CoreConverter<DatabaseMapping,Session>

getObjectClass

public Class getObjectClass()

PUBLIC: Returns the class type of the object value.

getObjectClassName

public String getObjectClassName()

INTERNAL: Return the name of the object type for the MW usage.

getDataClass

public Class getDataClass()

PUBLIC: Returns the class type of the data value.

getDataClassName

public String getDataClassName()

INTERNAL: Return the name of the data type for the MW usage.

setDataClass

public void setDataClass(Class dataClass)

PUBLIC: Set the class type of the data value.

setDataClassName

public void setDataClassName(String dataClassName)

INTERNAL: Set the name of the data type for the MW usage.

setObjectClass

public void setObjectClass(Class objectClass)

PUBLIC: Set the class type of the object value.

setObjectClassName

public void setObjectClassName(String objectClassName)

INTERNAL: Set the name of the object type for the MW usage.

convertObjectValueToDataValue

public Object convertObjectValueToDataValue(Object attributeValue,
                                            Session session)

INTERNAL: Convert to the field class.

Specified by:

convertObjectValueToDataValue in interface Converter

Specified by:

convertObjectValueToDataValue in interface CoreConverter<DatabaseMapping,Session>

initialize

public void initialize(DatabaseMapping mapping,
                       Session session)

INTERNAL: Set the mapping.

Specified by:

initialize in interface Converter

Specified by:

initialize in interface CoreConverter<DatabaseMapping,Session>

getMapping

protected DatabaseMapping getMapping()

INTERNAL: Return the mapping.

isMutable

public boolean isMutable()

INTERNAL: If the converter converts the value to a non-atomic value, i.e. a value that can have its' parts changed without being replaced, then it must return false, serialization can be non-atomic.

Specified by:

isMutable in interface Converter