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

Class DefaultDBDefaultInequalityOperator

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.BooleanFunctionSymbolImpl

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

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

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

All Implemented Interfaces:

BooleanFunctionSymbol, DBBooleanFunctionSymbol, DBFunctionSymbol, DBFunctionSymbolSerializer, FunctionSymbol, Predicate

public class DefaultDBDefaultInequalityOperator
extends AbstractDBInequalityOperator

Nested Class Summary

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

FunctionSymbol.FunctionalTermNullability

Field Summary

Fields inherited from class it.unibz.inf.ontop.model.term.functionsymbol.db.impl.AbstractDBInequalityOperator

inequalityLabel

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DefaultDBDefaultInequalityOperator(InequalityLabel inequalityLabel, DBTermType rootDBTermType, DBTermType dbBoolean)

Method Summary

Modifier and Type	Method and Description
protected ImmutableExpression	buildInequality(InequalityLabel inequalityLabel, com.google.common.collect.ImmutableList<? extends ImmutableTerm> subTerms, TermFactory termFactory)
boolean	canBePostProcessed(com.google.common.collect.ImmutableList<? extends ImmutableTerm> arguments) 1.

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

blocksNegation, getNativeDBString, isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms, negate, tolerateNulls

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

inBrackets, isPreferringToBePostProcessedOverBeingBlocked, mayReturnNullWithoutNullArguments

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

buildTermAfterEvaluation, enableIfElseNullLifting, inferType, tryToLiftIfThenTerm, tryToLiftMagicNumbers

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

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

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

clone, equals, getArity, getName, hashCode, toString

Methods inherited from class java.lang.Object

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

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

simplify2VL

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

analyzeInjectivity, evaluateIsNotNull, evaluateNullability, evaluateStrictEq, getExpectedBaseType, inferType, isAggregation, isDeterministic, isNullable, proposeProvenanceVariables, simplify, simplifyAsGuaranteedToBeNonNull

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

getArity, getName

Constructor Detail

DefaultDBDefaultInequalityOperator

protected DefaultDBDefaultInequalityOperator(InequalityLabel inequalityLabel,
                                             DBTermType rootDBTermType,
                                             DBTermType dbBoolean)

Method Detail

canBePostProcessed

public boolean canBePostProcessed(com.google.common.collect.ImmutableList<? extends ImmutableTerm> arguments)

Description copied from interface: FunctionSymbol

1. When a functional term simplifies itself in a BOTTOM-UP manner: Returns true if is guaranteed to "simplify itself" as a Constant when receiving Constants as arguments (outside the optimization phase) . 2. When a functional term simplifies itself in a TOP-DOWN manner (e.g. IF-THEN-ELSE functional terms): The permission for post-processing may depend on the ability of sub-functional terms to be post-processed or safely evaluated by the DB engine. (Recall that top-down evaluation allows some arguments not to be evaluated when their pre-conditions are not met. This is particularly valuable for preventing fatal errors).

buildInequality

protected ImmutableExpression buildInequality(InequalityLabel inequalityLabel,
                                              com.google.common.collect.ImmutableList<? extends ImmutableTerm> subTerms,
                                              TermFactory termFactory)

Specified by:

buildInequality in class AbstractDBInequalityOperator