it.unibz.inf.ontop.model.term.functionsymbol.impl

Class SPARQLLikeFunctionSymbolImpl

java.lang.Object

it.unibz.inf.ontop.model.term.impl.PredicateImpl

it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl

it.unibz.inf.ontop.model.term.functionsymbol.impl.SPARQLLikeFunctionSymbolImpl

All Implemented Interfaces:

FunctionSymbol, Predicate

Direct Known Subclasses:

EBVSPARQLLikeFunctionSymbolImpl, SPARQLFunctionSymbolImpl

public abstract class SPARQLLikeFunctionSymbolImpl
extends FunctionSymbolImpl

May not implement the SPARQLFunctionSymbol interface. Abstraction useful for EBV, which is not strictly a SPARQL function/operator

Nested Class Summary

Nested classes/interfaces inherited from interface it.unibz.inf.ontop.model.term.functionsymbol.FunctionSymbol

FunctionSymbol.FunctionalTermNullability

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SPARQLLikeFunctionSymbolImpl(String name, it.unibz.inf.ontop.com.google.common.collect.ImmutableList<TermType> expectedBaseTypes)

Method Summary

Modifier and Type	Method and Description
protected ImmutableTerm	extractLexicalTerm(ImmutableTerm rdfTerm, TermFactory termFactory)
protected ImmutableTerm	extractRDFTermTypeTerm(ImmutableTerm rdfTerm, TermFactory termFactory)
protected boolean	isRDFFunctionalTerm(ImmutableTerm term)
protected boolean	mayReturnNullWithoutNullArguments() Default value for SPARQL functions as they may produce NULL due to SPARQL errors

Methods inherited from class it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl

analyzeInjectivity, buildTermAfterEvaluation, canBeSafelyDecomposedIntoConjunction, decomposeInjectiveTopFunctionalTerm, enableIfElseNullLifting, evaluateIsNotNull, evaluateNullability, evaluateStrictEq, evaluateStrictEqWithFunctionalTerm, evaluateStrictEqWithNonNullConstant, getExpectedBaseType, getExpectedBaseTypes, isAggregation, isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms, isDeterministic, isInjective, isNullable, proposeProvenanceVariables, simplify, simplifyAsGuaranteedToBeNonNull, tolerateNulls, transformIntoRegularArguments, tryToLiftMagicNumbers

Methods inherited from class it.unibz.inf.ontop.model.term.impl.PredicateImpl

equals, getArity, getName, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unibz.inf.ontop.model.term.functionsymbol.FunctionSymbol

canBePostProcessed, inferType

Methods inherited from interface it.unibz.inf.ontop.model.term.functionsymbol.Predicate

getArity, getName

Constructor Detail

SPARQLLikeFunctionSymbolImpl

protected SPARQLLikeFunctionSymbolImpl(@Nonnull
                                       String name,
                                       @Nonnull
                                       it.unibz.inf.ontop.com.google.common.collect.ImmutableList<TermType> expectedBaseTypes)

Method Detail

mayReturnNullWithoutNullArguments

protected boolean mayReturnNullWithoutNullArguments()

Default value for SPARQL functions as they may produce NULL due to SPARQL errors

Specified by:

mayReturnNullWithoutNullArguments in class FunctionSymbolImpl

isRDFFunctionalTerm

protected boolean isRDFFunctionalTerm(ImmutableTerm term)

extractRDFTermTypeTerm

protected ImmutableTerm extractRDFTermTypeTerm(ImmutableTerm rdfTerm,
                                               TermFactory termFactory)

extractLexicalTerm

protected ImmutableTerm extractLexicalTerm(ImmutableTerm rdfTerm,
                                           TermFactory termFactory)