it.unibz.inf.ontop.answering.resultset.impl

Class DistinctJDBCTupleResultSet

java.lang.Object

it.unibz.inf.ontop.answering.resultset.impl.AbstractTupleResultSet

it.unibz.inf.ontop.answering.resultset.impl.JDBCTupleResultSet

it.unibz.inf.ontop.answering.resultset.impl.DistinctJDBCTupleResultSet

All Implemented Interfaces:

IterativeOBDAResultSet<OntopBindingSet,OntopResultConversionException>, OBDAResultSet, TupleResultSet, AutoCloseable

public class DistinctJDBCTupleResultSet
extends JDBCTupleResultSet
implements TupleResultSet

Class to handle distinct in SPARQL query. Avoid returning duplicate rows. See test case DistinctResultSetTest

Field Summary

Fields inherited from class it.unibz.inf.ontop.answering.resultset.impl.AbstractTupleResultSet

rs, signature

Constructor Summary

Constructors

Constructor and Description

DistinctJDBCTupleResultSet(ResultSet rs, it.unibz.inf.ontop.com.google.common.collect.ImmutableSortedSet<it.unibz.inf.ontop.model.term.Variable> sqlSignature, it.unibz.inf.ontop.com.google.common.collect.ImmutableMap<it.unibz.inf.ontop.model.term.Variable,it.unibz.inf.ontop.model.type.DBTermType> sqlTypes, it.unibz.inf.ontop.iq.node.ConstructionNode constructionNode, it.unibz.inf.ontop.model.atom.DistinctVariableOnlyDataAtom answerAtom, it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger, it.unibz.inf.ontop.model.term.TermFactory termFactory, it.unibz.inf.ontop.substitution.SubstitutionFactory substitutionFactory)

Method Summary

Modifier and Type	Method and Description
protected boolean	moveCursor() Moves cursor until we get a fresh row

Methods inherited from class it.unibz.inf.ontop.answering.resultset.impl.JDBCTupleResultSet

readCurrentRow

Methods inherited from class it.unibz.inf.ontop.answering.resultset.impl.AbstractTupleResultSet

close, getColumnCount, getFetchSize, getSignature, hasNext, next

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface it.unibz.inf.ontop.answering.resultset.TupleResultSet

getColumnCount, getFetchSize, getSignature

Methods inherited from interface it.unibz.inf.ontop.answering.resultset.IterativeOBDAResultSet

hasNext, next

Methods inherited from interface it.unibz.inf.ontop.answering.resultset.OBDAResultSet

close

Constructor Detail

DistinctJDBCTupleResultSet

public DistinctJDBCTupleResultSet(ResultSet rs,
                                  it.unibz.inf.ontop.com.google.common.collect.ImmutableSortedSet<it.unibz.inf.ontop.model.term.Variable> sqlSignature,
                                  it.unibz.inf.ontop.com.google.common.collect.ImmutableMap<it.unibz.inf.ontop.model.term.Variable,it.unibz.inf.ontop.model.type.DBTermType> sqlTypes,
                                  it.unibz.inf.ontop.iq.node.ConstructionNode constructionNode,
                                  it.unibz.inf.ontop.model.atom.DistinctVariableOnlyDataAtom answerAtom,
                                  it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger,
                                  it.unibz.inf.ontop.model.term.TermFactory termFactory,
                                  it.unibz.inf.ontop.substitution.SubstitutionFactory substitutionFactory)

Method Detail

moveCursor

protected boolean moveCursor()
                      throws SQLException,
                             OntopConnectionException

Moves cursor until we get a fresh row

Overrides:

moveCursor in class AbstractTupleResultSet

Throws:

SQLException

OntopConnectionException