org.eclipse.persistence.core.mappings.transformers

Interface CoreFieldTransformer<SESSION extends CoreSession>

All Superinterfaces:

java.io.Serializable

All Known Subinterfaces:

FieldTransformer

All Known Implementing Classes:

ConstantTransformer, FieldTransformerAdapter, MethodBasedFieldTransformer

public interface CoreFieldTransformer<SESSION extends CoreSession>
extends java.io.Serializable

This interface is used by the Transformation Mapping to build the value for a specific field. The user must provide implementations of this interface to the Transformation Mapping.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	BUILD_FIELD_VALUE_METHOD Method name should be same as the value of this field.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	buildFieldValue(java.lang.Object instance, java.lang.String fieldName, SESSION session)

Field Detail

BUILD_FIELD_VALUE_METHOD

static final java.lang.String BUILD_FIELD_VALUE_METHOD

Method name should be same as the value of this field. This field is used to find method name in reflection call.

See Also:

Constant Field Values

Method Detail

buildFieldValue

java.lang.Object buildFieldValue(java.lang.Object instance,
                                 java.lang.String fieldName,
                                 SESSION session)

Parameters:

instance - - an instance of the domain class which contains the attribute

session - - the current session

fieldName - - the name of the field being transformed. Used if the user wants to use this transformer for multiple fields.

Returns:

- The value to be written for the field associated with this transformer