Module eclipselink

Package org.eclipse.persistence.oxm.annotations

Annotation Interface XmlClassExtractor

@Target(TYPE)
@Retention(RUNTIME)
public @interface XmlClassExtractor

A ClassExtractor allows for a user defined class indicator in place of using xsi:type. The class has the following restrictions:

• It must extend the ClassExtractor class and implement the ClassExtractor.extractClassFromRow(org.eclipse.persistence.sessions.DataRecord, org.eclipse.persistence.sessions.Session) method.
• That method must take a database row (a DataRecord/Map) as an argument and must return the class to use for that row.

This method will be used to decide which class to instantiate when unmarshalling an instance document.

The ClassExtractor must only be set on the root of an entity class or sub-hierarchy in which a different inheritance strategy is applied.

Required Element Summary

Required Elements

Modifier and Type	Required Element	Description
Class<?>	value	Defines the name of the class extractor that should be applied to this entity's descriptor.

Element Details

value

Class<?> value

Defines the name of the class extractor that should be applied to this entity's descriptor.