Purpose: Conversion interface to allow conversion between object and data types. This can be used in any mapping to convert between the object and data types without requiring code placed in the object model. TopLink provides several common converters, but the application can also define it own.
DirectToFieldMapping#setConverter(Converter), DirectCollectionMapping#setValueConverter(Converter), ObjectTypeConverter, TypeConversionConverter
| Modifier and Type | Method and Description |
|---|---|
| public Object | convertDataValueToObjectValue(Object dataValue, Session session)
Redeclares org. |
| public Object | convertObjectValueToDataValue(Object objectValue, Session session)
Redeclares org. |
| public void | initialize(DatabaseMapping mapping, Session session)
Redeclares org. |
| public boolean | isMutable()
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. |
| convertDataValueToObjectValue | back to summary |
|---|---|
| public Object convertDataValueToObjectValue(Object dataValue, Session session) Redeclares org. 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.
| |
| convertObjectValueToDataValue | back to summary |
|---|---|
| public Object convertObjectValueToDataValue(Object objectValue, Session session) Redeclares org. 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.
| |
| initialize | back to summary |
|---|---|
| public void initialize(DatabaseMapping mapping, Session session) Redeclares org. PUBLIC: Allow for any initialization.
| |
| isMutable | back to summary |
|---|---|
| public boolean isMutable() 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. | |