com.bigdata.rdf.internal.constraints

Class ReplaceBOp

java.lang.Object

com.bigdata.bop.CoreBaseBOp

com.bigdata.bop.BOpBase

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

com.bigdata.rdf.internal.constraints.ReplaceBOp

All Implemented Interfaces:

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

public class ReplaceBOp
extends IVValueExpression<IV>
implements INeedsMaterialization

See Also:

http://www.w3.org/2009/sparql/docs/query-1.1/rq25.xml#func-replace, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ReplaceBOp.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
ReplaceBOp(BOp[] args, Map<String,Object> anns) Required shallow copy constructor.
ReplaceBOp(IValueExpression<? extends IV> var, IValueExpression<? extends IV> pattern, IValueExpression<? extends IV> replacement, GlobalAnnotations globals) Construct a replace bop without flags.
ReplaceBOp(IValueExpression<? extends IV> var, IValueExpression<? extends IV> pattern, IValueExpression<? extends IV> replacement, IValueExpression<? extends IV> flags, GlobalAnnotations globals) Construct a replace bop with flags.
ReplaceBOp(ReplaceBOp op) Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).

Method Summary

Methods

Modifier and Type	Method and Description
BigdataLiteral	evaluate(BigdataValueFactory valueFactory, org.openrdf.model.Value... args) Lifted directly from Sesame's Replace operator.
IV	get(IBindingSet bs) Return the as bound value of the variable, constant, or expression.
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.IVValueExpression

anns, areGlobalsRequired, 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

ReplaceBOp

public ReplaceBOp(IValueExpression<? extends IV> var,
          IValueExpression<? extends IV> pattern,
          IValueExpression<? extends IV> replacement,
          GlobalAnnotations globals)

Construct a replace bop without flags.

ReplaceBOp

public ReplaceBOp(IValueExpression<? extends IV> var,
          IValueExpression<? extends IV> pattern,
          IValueExpression<? extends IV> replacement,
          IValueExpression<? extends IV> flags,
          GlobalAnnotations globals)

Construct a replace bop with flags.

ReplaceBOp

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

Required shallow copy constructor.

ReplaceBOp

public ReplaceBOp(ReplaceBOp 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

get

public IV get(IBindingSet bs)

Description copied from interface: IValueExpression

Return the as bound value of the variable, constant, or expression. The as bound value of an IConstant is the contant's value. The as bound value of an IVariable is the bound value in the given IBindingSet -or- null if the variable is not bound in the IBindingSet.

Specified by:

get in interface IValueExpression<IV>

Parameters:

bs - The binding set.

Returns:

The as bound value of the constant, variable, or expression.

evaluate

public BigdataLiteral evaluate(BigdataValueFactory valueFactory,
                      org.openrdf.model.Value... args)
                        throws org.openrdf.query.algebra.evaluation.ValueExprEvaluationException

Lifted directly from Sesame's Replace operator. FIXME The Pattern should be cached if the pattern argument and flags are constants.

Throws:

org.openrdf.query.algebra.evaluation.ValueExprEvaluationException

See Also:

REGEXBOp should cache the Pattern when it is a constant