com.bigdata.bop

Interface IConstraint

All Superinterfaces:

BOp, Cloneable, IPropertySet, Serializable

All Known Subinterfaces:

IValueExpressionConstraint<X>

All Known Implementing Classes:

Constraint, ProjectedConstraint, SPARQLConstraint, TryBeforeMaterializationConstraint

public interface IConstraint
extends BOp, Serializable

An interface for specifying constraints on the allowable states of an IBindingSet. For example, you can impose the constraint that two variables must have distinct bindings the constraint that a binding must be (or must not be) a particular value type, or that the binding must take on one of a set of enumerated values.

Version:

$Id$

Author:

Bryan Thompson

Nested Class Summary

Nested classes/interfaces inherited from interface com.bigdata.bop.BOp

BOp.Annotations

Field Summary

Fields

Modifier and Type	Field and Description
static IConstraint[]	EMPTY A zero length empty IConstraint array.

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Method Summary

Methods

Modifier and Type	Method and Description
boolean	accept(IBindingSet bindingSet) Return true if the binding set satisfies the constraint.

Methods inherited from interface com.bigdata.bop.BOp

annotations, argIterator, args, arity, clone, get, getEvaluationContext, getId, getProperty, getRequiredProperty, isController, setProperty, toArray, toArray, toShortString, toString, toString

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Field Detail

EMPTY

static final IConstraint[] EMPTY

A zero length empty IConstraint array.

Method Detail

accept

boolean accept(IBindingSet bindingSet)

Return true if the binding set satisfies the constraint.

Parameters:

bindingSet - The binding set.