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

Class QuestStatement

java.lang.Object

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

All Implemented Interfaces:

OBDAStatement, OntopStatement, AutoCloseable

public abstract class QuestStatement
extends Object
implements OntopStatement

Abstract implementation of OntopStatement.

Constructor Summary

Constructors

Constructor and Description
QuestStatement(QueryReformulator queryProcessor, InputQueryFactory inputQueryFactory)

Method Summary

Modifier and Type	Method and Description
void	cancel()
protected abstract void	cancelExecution() Cancel the processing of the target query.
<R extends OBDAResultSet> R	execute(InputQuery<R> inputQuery) Calls the necessary tuple or graph query execution Implements describe uri or var logic Returns the result set for the given query
protected abstract BooleanResultSet	executeBooleanQuery(it.unibz.inf.ontop.iq.IQ executableQuery, QueryLogger queryLogger)
protected abstract SimpleGraphResultSet	executeGraphQuery(ConstructQuery query, it.unibz.inf.ontop.iq.IQ executableQuery, boolean collectResults, QueryLogger queryLogger) TODO: refactor
protected abstract TupleResultSet	executeSelectQuery(it.unibz.inf.ontop.iq.IQ executableQuery, QueryLogger queryLogger)
it.unibz.inf.ontop.iq.IQ	getExecutableQuery(InputQuery inputQuery)
String	getRewritingRendering(InputQuery query)
boolean	isCanceled() Called to check whether the statement was cancelled on purpose

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.connection.OntopStatement

getTupleCount

Methods inherited from interface it.unibz.inf.ontop.answering.connection.OBDAStatement

close, getMaxRows, getMoreResults, getQueryTimeout, isClosed, setMaxRows, setQueryTimeout

Constructor Detail

QuestStatement

public QuestStatement(QueryReformulator queryProcessor,
                      InputQueryFactory inputQueryFactory)

Method Detail

executeSelectQuery

protected abstract TupleResultSet executeSelectQuery(it.unibz.inf.ontop.iq.IQ executableQuery,
                                                     QueryLogger queryLogger)
                                              throws OntopQueryEvaluationException

Throws:

OntopQueryEvaluationException

executeBooleanQuery

protected abstract BooleanResultSet executeBooleanQuery(it.unibz.inf.ontop.iq.IQ executableQuery,
                                                        QueryLogger queryLogger)
                                                 throws OntopQueryEvaluationException

Throws:

OntopQueryEvaluationException

executeGraphQuery

protected abstract SimpleGraphResultSet executeGraphQuery(ConstructQuery query,
                                                          it.unibz.inf.ontop.iq.IQ executableQuery,
                                                          boolean collectResults,
                                                          QueryLogger queryLogger)
                                                   throws OntopQueryEvaluationException,
                                                          OntopResultConversionException,
                                                          OntopConnectionException

TODO: refactor

Throws:

OntopQueryEvaluationException

OntopResultConversionException

OntopConnectionException

cancelExecution

protected abstract void cancelExecution()
                                 throws OntopQueryEvaluationException

Cancel the processing of the target query.

Throws:

OntopQueryEvaluationException

execute

public <R extends OBDAResultSet> R execute(InputQuery<R> inputQuery)
                                    throws OntopConnectionException,
                                           OntopReformulationException,
                                           OntopQueryEvaluationException,
                                           OntopResultConversionException

Calls the necessary tuple or graph query execution Implements describe uri or var logic Returns the result set for the given query

Specified by:

execute in interface OBDAStatement

Throws:

OntopConnectionException

OntopReformulationException

OntopQueryEvaluationException

OntopResultConversionException

cancel

public void cancel()
            throws OntopConnectionException

Specified by:

cancel in interface OBDAStatement

Throws:

OntopConnectionException

isCanceled

public boolean isCanceled()

Called to check whether the statement was cancelled on purpose

getRewritingRendering

public String getRewritingRendering(InputQuery query)
                             throws OntopReformulationException

Specified by:

getRewritingRendering in interface OntopStatement

Throws:

OntopReformulationException

getExecutableQuery

public it.unibz.inf.ontop.iq.IQ getExecutableQuery(InputQuery inputQuery)
                                            throws OntopReformulationException

Specified by:

getExecutableQuery in interface OntopStatement

Throws:

OntopReformulationException