it.unibz.inf.ontop.answering.connection.impl

Class SQLQuestStatement

java.lang.Object

it.unibz.inf.ontop.answering.connection.impl.QuestStatement

it.unibz.inf.ontop.answering.connection.impl.SQLQuestStatement

All Implemented Interfaces:

OBDAStatement, OntopStatement, AutoCloseable

public class SQLQuestStatement
extends QuestStatement

SQL-specific implementation of OBDAStatement. Derived from QuestStatement.

Constructor Summary

Constructors

Constructor and Description
SQLQuestStatement(it.unibz.inf.ontop.answering.reformulation.QueryReformulator queryProcessor, Statement sqlStatement, JDBCStatementFinalizer statementFinalizer, it.unibz.inf.ontop.model.term.TermFactory termFactory, org.apache.commons.rdf.api.RDF rdfFactory, it.unibz.inf.ontop.substitution.SubstitutionFactory substitutionFactory, OntopSystemSQLSettings settings)

Method Summary

Modifier and Type	Method and Description
protected void	cancelExecution()
void	close()
BooleanResultSet	executeBooleanQuery(it.unibz.inf.ontop.iq.IQ executableQuery, it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger)
protected GraphResultSet	executeConstructQuery(it.unibz.inf.ontop.answering.reformulation.input.ConstructTemplate constructTemplate, it.unibz.inf.ontop.iq.IQ executableQuery, it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger, boolean shouldAlsoCloseStatement) TODO: make it SQL-independent
protected TupleResultSet	executeSelectQuery(it.unibz.inf.ontop.iq.IQ executableQuery, it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger, boolean shouldAlsoCloseStatement)
int	getMaxRows()
void	getMoreResults()
int	getQueryTimeout()
int	getTupleCount(it.unibz.inf.ontop.answering.reformulation.input.InputQuery inputQuery) Returns the number of tuples returned by the query
boolean	isClosed()
void	setMaxRows(int max)
void	setQueryTimeout(int seconds)

Methods inherited from class it.unibz.inf.ontop.answering.connection.impl.QuestStatement

cancel, execute, execute, executeConstructQuery, executeDescribeQuery, executeSelectQuery, getExecutableQuery, getRewritingRendering, isCanceled

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLQuestStatement

public SQLQuestStatement(it.unibz.inf.ontop.answering.reformulation.QueryReformulator queryProcessor,
                         Statement sqlStatement,
                         JDBCStatementFinalizer statementFinalizer,
                         it.unibz.inf.ontop.model.term.TermFactory termFactory,
                         org.apache.commons.rdf.api.RDF rdfFactory,
                         it.unibz.inf.ontop.substitution.SubstitutionFactory substitutionFactory,
                         OntopSystemSQLSettings settings)

Method Detail

getMaxRows

public int getMaxRows()
               throws OntopConnectionException

Throws:

OntopConnectionException

getMoreResults

public void getMoreResults()
                    throws OntopConnectionException

Throws:

OntopConnectionException

setMaxRows

public void setMaxRows(int max)
                throws OntopConnectionException

Throws:

OntopConnectionException

setQueryTimeout

public void setQueryTimeout(int seconds)
                     throws OntopConnectionException

Throws:

OntopConnectionException

getQueryTimeout

public int getQueryTimeout()
                    throws OntopConnectionException

Throws:

OntopConnectionException

isClosed

public boolean isClosed()
                 throws OntopConnectionException

Throws:

OntopConnectionException

getTupleCount

public int getTupleCount(it.unibz.inf.ontop.answering.reformulation.input.InputQuery inputQuery)
                  throws OntopReformulationException,
                         OntopQueryEvaluationException

Returns the number of tuples returned by the query

Throws:

OntopReformulationException

OntopQueryEvaluationException

close

public void close()
           throws OntopConnectionException

Throws:

OntopConnectionException

cancelExecution

protected void cancelExecution()
                        throws OntopQueryEvaluationException

Specified by:

cancelExecution in class QuestStatement

Throws:

OntopQueryEvaluationException

executeBooleanQuery

public BooleanResultSet executeBooleanQuery(it.unibz.inf.ontop.iq.IQ executableQuery,
                                            it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger)
                                     throws OntopQueryEvaluationException

Throws:

OntopQueryEvaluationException

executeSelectQuery

protected TupleResultSet executeSelectQuery(it.unibz.inf.ontop.iq.IQ executableQuery,
                                            it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger,
                                            boolean shouldAlsoCloseStatement)
                                     throws OntopQueryEvaluationException

Specified by:

executeSelectQuery in class QuestStatement

Throws:

OntopQueryEvaluationException

executeConstructQuery

protected GraphResultSet executeConstructQuery(it.unibz.inf.ontop.answering.reformulation.input.ConstructTemplate constructTemplate,
                                               it.unibz.inf.ontop.iq.IQ executableQuery,
                                               it.unibz.inf.ontop.answering.logging.QueryLogger queryLogger,
                                               boolean shouldAlsoCloseStatement)
                                        throws OntopQueryEvaluationException,
                                               OntopResultConversionException,
                                               OntopConnectionException

TODO: make it SQL-independent

Specified by:

executeConstructQuery in class QuestStatement

Throws:

OntopQueryEvaluationException

OntopResultConversionException

OntopConnectionException