org.datanucleus.store.objectvaluegenerator

Interface ObjectValueGenerator

public interface ObjectValueGenerator

Interface providing value generation based on an input (persistable) object.

Method Summary

Methods

Modifier and Type	Method and Description
Object	generate(ExecutionContext ec, Object obj, ExtensionMetaData[] extensions) Method that takes the object being persisted by the specified ExecutionContext and generates a value (based on the contents of the object).

Method Detail

generate

Object generate(ExecutionContext ec,
              Object obj,
              ExtensionMetaData[] extensions)

Method that takes the object being persisted by the specified ExecutionContext and generates a value (based on the contents of the object). This could be used, for example, to generate a unique value for the object based on some of its fields.

Parameters:

ec - execution context

obj - The object (persistent, or being persisted)

extensions - Extensions on the field being generated

Returns:

The value