net.sansa_stack.query.spark.ontop

Class NullToleratingDBConcatFunctionSymbol

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.db.impl.AbstractTypedDBFunctionSymbol

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

net.sansa_stack.query.spark.ontop.NullToleratingDBConcatFunctionSymbol

All Implemented Interfaces:

it.unibz.inf.ontop.model.term.functionsymbol.db.DBConcatFunctionSymbol, it.unibz.inf.ontop.model.term.functionsymbol.db.DBFunctionSymbol, it.unibz.inf.ontop.model.term.functionsymbol.db.DBFunctionSymbolSerializer, it.unibz.inf.ontop.model.term.functionsymbol.FunctionSymbol, it.unibz.inf.ontop.model.term.functionsymbol.Predicate, Serializable

public class NullToleratingDBConcatFunctionSymbol
extends it.unibz.inf.ontop.model.term.functionsymbol.db.impl.AbstractDBConcatFunctionSymbol

See Also:

Serialized Form

Nested Class Summary

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

it.unibz.inf.ontop.model.term.functionsymbol.FunctionSymbol.FunctionalTermNullability

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NullToleratingDBConcatFunctionSymbol(String nameInDialect, int arity, it.unibz.inf.ontop.model.type.DBTermType dbStringType, it.unibz.inf.ontop.model.type.DBTermType rootDBTermType, boolean isOperator)

Method Summary

Modifier and Type	Method and Description
boolean	canBePostProcessed(it.unibz.inf.ontop.com.google.common.collect.ImmutableList<? extends it.unibz.inf.ontop.model.term.ImmutableTerm> arguments)
it.unibz.inf.ontop.model.term.IncrementalEvaluation	evaluateIsNotNull(it.unibz.inf.ontop.com.google.common.collect.ImmutableList<? extends it.unibz.inf.ontop.model.term.ImmutableTerm> terms, it.unibz.inf.ontop.model.term.TermFactory termFactory, it.unibz.inf.ontop.iq.node.VariableNullability variableNullability) Never returns NULL
protected String	extractString(it.unibz.inf.ontop.model.term.Constant constant)
boolean	isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms()
protected boolean	tolerateNulls()

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

analyzeInjectivity, buildTermAfterEvaluation, getNativeDBString

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

getTargetType, inferType, isPreferringToBePostProcessedOverBeingBlocked, mayReturnNullWithoutNullArguments

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

canBeSafelyDecomposedIntoConjunction, decomposeInjectiveTopFunctionalTerm, enableIfElseNullLifting, 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

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.db.DBFunctionSymbol

isPreferringToBePostProcessedOverBeingBlocked

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

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

NullToleratingDBConcatFunctionSymbol

protected NullToleratingDBConcatFunctionSymbol(String nameInDialect,
                                               int arity,
                                               it.unibz.inf.ontop.model.type.DBTermType dbStringType,
                                               it.unibz.inf.ontop.model.type.DBTermType rootDBTermType,
                                               boolean isOperator)

Method Detail

isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms

public boolean isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms()

Specified by:

isAlwaysInjectiveInTheAbsenceOfNonInjectiveFunctionalTerms in class it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl

canBePostProcessed

public boolean canBePostProcessed(it.unibz.inf.ontop.com.google.common.collect.ImmutableList<? extends it.unibz.inf.ontop.model.term.ImmutableTerm> arguments)

tolerateNulls

protected boolean tolerateNulls()

Overrides:

tolerateNulls in class it.unibz.inf.ontop.model.term.functionsymbol.db.impl.AbstractTypedDBFunctionSymbol

evaluateIsNotNull

public it.unibz.inf.ontop.model.term.IncrementalEvaluation evaluateIsNotNull(it.unibz.inf.ontop.com.google.common.collect.ImmutableList<? extends it.unibz.inf.ontop.model.term.ImmutableTerm> terms,
                                                                             it.unibz.inf.ontop.model.term.TermFactory termFactory,
                                                                             it.unibz.inf.ontop.iq.node.VariableNullability variableNullability)

Never returns NULL

Specified by:

evaluateIsNotNull in interface it.unibz.inf.ontop.model.term.functionsymbol.FunctionSymbol

Overrides:

evaluateIsNotNull in class it.unibz.inf.ontop.model.term.functionsymbol.impl.FunctionSymbolImpl

extractString

protected String extractString(it.unibz.inf.ontop.model.term.Constant constant)

Specified by:

extractString in class it.unibz.inf.ontop.model.term.functionsymbol.db.impl.AbstractDBConcatFunctionSymbol