Module org.eclipse.persistence.jpa

Package org.eclipse.persistence.internal.jpa.metadata.xml

Class EmptyElementConverter

java.lang.Object

org.eclipse.persistence.internal.jpa.metadata.xml.EmptyElementConverter

All Implemented Interfaces:

Serializable, CoreConverter<DatabaseMapping,Session>, Converter

public class EmptyElementConverter
extends Object
implements Converter

Converts from empty node to true or false

Since:

EclipseLink 2.2

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
EmptyElementConverter()	Default constructor.

Method Summary

Modifier and Type	Method	Description
Object	convertDataValueToObjectValue(Object dataValue, Session session)	PUBLIC: Convert the databases' data representation of the value to the object's representation.
Object	convertObjectValueToDataValue(Object objectValue, Session session)	PUBLIC: Convert the object's representation of the value to the databases' data representation.
void	initialize(DatabaseMapping mapping, Session session)	PUBLIC: Allow for any initialization.
boolean	isMutable()	PUBLIC: If the converter converts the value to a mutable value, i.e.

Methods inherited from class java.lang.Object

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

Constructor Details

EmptyElementConverter

public EmptyElementConverter()

Default constructor.

Method Details

convertDataValueToObjectValue

public Object convertDataValueToObjectValue(Object dataValue,
 Session session)

Description copied from interface: Converter

PUBLIC: Convert the databases' data representation of the value to the object's representation. For example this could convert between an sql.Time datatype and the Java Calendar type.

Specified by:

convertDataValueToObjectValue in interface Converter

Specified by:

convertDataValueToObjectValue in interface CoreConverter<DatabaseMapping,Session>

convertObjectValueToDataValue

public Object convertObjectValueToDataValue(Object objectValue,
 Session session)

Description copied from interface: Converter

PUBLIC: Convert the object's representation of the value to the databases' data representation. For example this could convert between a Calendar Java type and the sql.Time datatype.

Specified by:

convertObjectValueToDataValue in interface Converter

Specified by:

convertObjectValueToDataValue in interface CoreConverter<DatabaseMapping,Session>

initialize

public void initialize(DatabaseMapping mapping,
 Session session)

Description copied from interface: Converter

PUBLIC: Allow for any initialization.

Specified by:

initialize in interface Converter

Specified by:

initialize in interface CoreConverter<DatabaseMapping,Session>

isMutable

public boolean isMutable()

Description copied from interface: Converter

PUBLIC: If the converter converts the value to a mutable value, i.e. a value that can have its' parts changed without being replaced, then it must return true. If the value is not mutable, cannot be changed without replacing the whole value then false must be returned. This is used within the UnitOfWork to determine how to clone.

Specified by:

isMutable in interface Converter