com.bigdata.rdf.internal.constraints

Class CompareBOp

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.CompareBOp

All Implemented Interfaces:

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

public class CompareBOp
extends XSDBooleanIVValueExpression
implements INeedsMaterialization

Perform open-world value comparison operations per the SPARQL spec (the LT operator). This does NOT implement the broader ordering for ORDER BY. That is handled by IVComparator.

See Also:

<, IVComparator, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	CompareBOp.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
CompareBOp(BOp[] args, Map<String,Object> anns) Required shallow copy constructor.
CompareBOp(CompareBOp op) Constructor required for com.bigdata.bop.BOpUtility#deepCopy(FilterNode).
CompareBOp(IValueExpression<? extends IV> left, IValueExpression<? extends IV> right, org.openrdf.query.algebra.Compare.CompareOp op)

Method Summary

Methods

Modifier and Type	Method and Description
protected static boolean	_accept(int compare, org.openrdf.query.algebra.Compare.CompareOp op)
boolean	accept(IBindingSet s) Implement this method.
static boolean	compare(IV<BigdataValue,?> left, IV<BigdataValue,?> right, org.openrdf.query.algebra.Compare.CompareOp op)
INeedsMaterialization.Requirement	getRequirement() The CompareBOp can work with non-materialized terms in the case of inline numerical compare operations.
org.openrdf.query.algebra.Compare.CompareOp	op()

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

CompareBOp

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

CompareBOp

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

Required shallow copy constructor.

CompareBOp

public CompareBOp(CompareBOp op)

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

Method Detail

op

public org.openrdf.query.algebra.Compare.CompareOp op()

compare

public static boolean compare(IV<BigdataValue,?> left,
              IV<BigdataValue,?> right,
              org.openrdf.query.algebra.Compare.CompareOp op)

accept

public boolean accept(IBindingSet s)

Description copied from class: XSDBooleanIVValueExpression

Implement this method.

Specified by:

accept in class XSDBooleanIVValueExpression

Parameters:

s - The source solution.

Returns:

true iff the function accepts the solution.

_accept

protected static boolean _accept(int compare,
              org.openrdf.query.algebra.Compare.CompareOp op)

getRequirement

public INeedsMaterialization.Requirement getRequirement()

The CompareBOp can work with non-materialized terms in the case of inline numerical compare operations. It is only when the bop encounters non-inlined numerics or needs to compare strings that it needs materialized terms.

Specified by:

getRequirement in interface INeedsMaterialization