com.bigdata.rdf.internal.constraints

Class ProjectedConstraint

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.BOpBase

com.bigdata.bop.constraint.Constraint

com.bigdata.rdf.internal.constraints.ProjectedConstraint

All Implemented Interfaces:

BOp, IConstraint, IValueExpressionConstraint, IPropertySet, Serializable, Cloneable

public class ProjectedConstraint
extends Constraint

This class implements 'AS' in a projection as found in both subselects and bind, e.g.

    { SUBSELECT (Foo(?x) AS ?y) ...
      {  ...
      }
    }
 

or

    BIND (Bar(?x) AS ?y) 
 

The bind fails if the expression evaluates to some value that is different from a pre-existing binding for the target variable. If the expr (Foo or Bar above) has an error then the specification is that no binding is done, but the unbound value is a success. The specification for this operation is found as Extend.

See Also:

Serialized Form

Nested Class Summary

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

BOp.Annotations

Field Summary

Fields inherited from class com.bigdata.bop.CoreBaseBOp

DEFAULT_INITIAL_CAPACITY

Fields inherited from interface com.bigdata.bop.IConstraint

EMPTY

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Constructor Summary

Constructors

Constructor and Description
ProjectedConstraint(BOp[] args, Map<String,Object> annotations)
ProjectedConstraint(ConditionalBind bind)
ProjectedConstraint(ProjectedConstraint op)

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 class com.bigdata.bop.constraint.Constraint

getValueExpression, wrap

Methods inherited from class com.bigdata.bop.BOpBase

__replaceArg, _clearProperty, _set, _setProperty, annotations, annotationsCopy, annotationsEqual, annotationsRef, argIterator, args, argsCopy, arity, clearAnnotations, clearProperty, deepCopy, deepCopy, get, getProperty, setArg, setProperty, setUnboundProperty, toArray, toArray

Methods inherited from class com.bigdata.bop.CoreBaseBOp

annotationsEqual, annotationsToString, annotationsToString, annotationValueToString, checkArgs, clone, equals, getEvaluationContext, getId, getProperty, getRequiredProperty, hashCode, indent, isController, mutation, shortenName, toShortString, toString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

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

Constructor Detail

ProjectedConstraint

public ProjectedConstraint(BOp[] args,
                   Map<String,Object> annotations)

ProjectedConstraint

public ProjectedConstraint(ProjectedConstraint op)

ProjectedConstraint

public ProjectedConstraint(ConditionalBind bind)

Method Detail

accept

public boolean accept(IBindingSet bindingSet)

Description copied from interface: IConstraint

Return true if the binding set satisfies the constraint.

Specified by:

accept in interface IConstraint

Overrides:

accept in class Constraint

Parameters:

bindingSet - The binding set.