org.eclipse.stardust.engine.api.query

Interface OrderCriterion

All Superinterfaces:

Serializable

All Known Implementing Classes:

org.eclipse.stardust.engine.api.query.AbstractSingleOrderCriterion, AttributeOrder, DataOrder, OrderCriteria

public interface OrderCriterion
extends Serializable

Interface to be implemented by custom order criteria.

Order criteria are used to define a specific order of elements returned by a query and can be thought of an analogon to an SQL ORDER-BY-clause.

Version:

$Revision$

Author:

rsauer

Method Summary

Methods

Modifier and Type	Method and Description
Object	accept(OrderEvaluationVisitor visitor, Object context) Visitor dispatch callback used for evaluating order criteria.

Method Detail

accept

Object accept(OrderEvaluationVisitor visitor,
            Object context)

Visitor dispatch callback used for evaluating order criteria. Usually implemented as return visitor.visit(this, context), thus calling the appropriately overloaded visitation method.

Parameters:

visitor - The visitor performing the evaluation.

context - Information used by the visitor during the visitation process.

Returns:

Visitor specific result of the visitation.