com.bigdata.rdf.internal.constraints

Class SameTermBOp

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.BOpBase

com.bigdata.rdf.internal.constraints.IVValueExpression<XSDBooleanIV>

com.bigdata.rdf.internal.constraints.XSDBooleanIVValueExpression

com.bigdata.rdf.internal.constraints.SameTermBOp

All Implemented Interfaces:

BOp, IValueExpression<XSDBooleanIV>, INeedsMaterialization, IPropertySet, Serializable, Cloneable

public class SameTermBOp
extends XSDBooleanIVValueExpression
implements INeedsMaterialization

Compare two terms for exact equality.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	SameTermBOp.Annotations

Nested classes/interfaces inherited from interface com.bigdata.rdf.internal.constraints.INeedsMaterialization

INeedsMaterialization.Requirement

Field Summary

Fields inherited from class com.bigdata.bop.CoreBaseBOp

DEFAULT_INITIAL_CAPACITY

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Constructor Summary

Constructors

Constructor and Description
SameTermBOp(BOp[] args, Map<String,Object> anns) Required shallow copy constructor.
SameTermBOp(IValueExpression<? extends IV> left, IValueExpression<? extends IV> right) Constructor for sameTerm using Compare.CompareOp.EQ.
SameTermBOp(IValueExpression<? extends IV> left, IValueExpression<? extends IV> right, org.openrdf.query.algebra.Compare.CompareOp op) Constructor for sameTerm using either Compare.CompareOp.EQ or Compare.CompareOp.NE.
SameTermBOp(SameTermBOp op) Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).

Method Summary

Methods

Modifier and Type	Method and Description
boolean	accept(IBindingSet bs) Implement this method.
INeedsMaterialization.Requirement	getRequirement() Does the bop always need materialized variables, or can it sometimes operate on inline terms without materialization? If sometimes, we'll run it before the materialization pipeline steps in an effort to avoid unnecessary materialization overhead.

Methods inherited from class com.bigdata.rdf.internal.constraints.XSDBooleanIVValueExpression

areGlobalsRequired, get, wrap

Methods inherited from class com.bigdata.rdf.internal.constraints.IVValueExpression

anns, asIV, asIV, asLiteral, asValue, get, getAndCheckBound, getAndCheckLiteral, getAndCheckLiteralValue, getLexiconConfiguration, getNamespace, getTimestamp, getValueFactory, literalLabel

Methods inherited from class com.bigdata.bop.BOpBase

__replaceArg, _clearProperty, _set, _setProperty, annotations, annotationsCopy, annotationsEqual, annotationsRef, argIterator, args, argsCopy, arity, clearAnnotations, clearProperty, deepCopy, deepCopy, 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.IValueExpression

toString

Methods inherited from interface com.bigdata.bop.BOp

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

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Constructor Detail

SameTermBOp

public SameTermBOp(IValueExpression<? extends IV> left,
           IValueExpression<? extends IV> right)

Constructor for sameTerm using Compare.CompareOp.EQ.

SameTermBOp

public SameTermBOp(IValueExpression<? extends IV> left,
           IValueExpression<? extends IV> right,
           org.openrdf.query.algebra.Compare.CompareOp op)

Constructor for sameTerm using either Compare.CompareOp.EQ or Compare.CompareOp.NE.

Parameters:

left -

right -

op -

SameTermBOp

public SameTermBOp(BOp[] args,
           Map<String,Object> anns)

Required shallow copy constructor.

SameTermBOp

public SameTermBOp(SameTermBOp op)

Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).

Method Detail

getRequirement

public INeedsMaterialization.Requirement getRequirement()

Description copied from interface: INeedsMaterialization

Does the bop always need materialized variables, or can it sometimes operate on inline terms without materialization? If sometimes, we'll run it before the materialization pipeline steps in an effort to avoid unnecessary materialization overhead. If it fails to evaluate for a particular solution, then it will be run again after the materialization steps for that solution.

Specified by:

getRequirement in interface INeedsMaterialization

accept

public boolean accept(IBindingSet bs)

Description copied from class: XSDBooleanIVValueExpression

Implement this method.

Specified by:

accept in class XSDBooleanIVValueExpression

Parameters:

bs - The source solution.

Returns:

true iff the function accepts the solution.