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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.loader.plan.exec.process.internal;
import java.io.Serializable;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.cfg.NotYetImplementedException;
import org.hibernate.dialect.pagination.LimitHelper;
import org.hibernate.engine.spi.PersistenceContext;
import org.hibernate.engine.spi.QueryParameters;
import org.hibernate.engine.spi.RowSelection;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.loader.plan.exec.process.spi.ResultSetProcessor;
import org.hibernate.loader.plan.exec.process.spi.RowReader;
import org.hibernate.loader.plan.exec.process.spi.ScrollableResultSetProcessor;
import org.hibernate.loader.plan.exec.query.spi.NamedParameterContext;
import org.hibernate.loader.plan.exec.spi.AliasResolutionContext;
import org.hibernate.loader.plan.spi.CollectionReturn;
import org.hibernate.loader.plan.spi.LoadPlan;
import org.hibernate.loader.spi.AfterLoadAction;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.pretty.MessageHelper;
import org.hibernate.transform.ResultTransformer;
import org.jboss.logging.Logger;
/**
* @author Steve Ebersole
*/
public class ResultSetProcessorImpl implements ResultSetProcessor {
private static final Logger LOG = Logger.getLogger( ResultSetProcessorImpl.class );
private final LoadPlan loadPlan;
private final AliasResolutionContext aliasResolutionContext;
private final RowReader rowReader;
private final boolean hadSubselectFetches;
private final boolean shouldUseOptionalEntityInstance;
// There are times when the "optional entity information" on QueryParameters should be used and
// times when they should be ignored. Loader uses its isSingleRowLoader method to allow
// subclasses to override that. Collection initializers, batch loaders, e.g. override that
// it to be false. The 'shouldUseOptionalEntityInstance' setting is meant to fill that same role.
public ResultSetProcessorImpl(
LoadPlan loadPlan,
AliasResolutionContext aliasResolutionContext,
RowReader rowReader,
boolean shouldUseOptionalEntityInstance,
boolean hadSubselectFetches) {
this.loadPlan = loadPlan;
this.aliasResolutionContext = aliasResolutionContext;
this.rowReader = rowReader;
this.shouldUseOptionalEntityInstance = shouldUseOptionalEntityInstance;
this.hadSubselectFetches = hadSubselectFetches;
}
@Override
public ScrollableResultSetProcessor toOnDemandForm() {
// todo : implement
throw new NotYetImplementedException();
}
@Override
public List extractResults(
ResultSet resultSet,
final SharedSessionContractImplementor session,
QueryParameters queryParameters,
NamedParameterContext namedParameterContext,
boolean returnProxies,
boolean readOnly,
ResultTransformer forcedResultTransformer,
List afterLoadActionList) throws SQLException {
handlePotentiallyEmptyCollectionRootReturns( queryParameters.getCollectionKeys(), resultSet, session );
final ResultSetProcessingContextImpl context = createResultSetProcessingContext(
resultSet,
session,
queryParameters,
namedParameterContext,
returnProxies,
readOnly
);
final List loadResults = extractRows( resultSet, queryParameters, context );
rowReader.finishUp( context, afterLoadActionList );
context.wrapUp();
session.getPersistenceContextInternal().initializeNonLazyCollections();
return loadResults;
}
protected ResultSetProcessingContextImpl createResultSetProcessingContext(
ResultSet resultSet,
final SharedSessionContractImplementor session,
QueryParameters queryParameters,
NamedParameterContext namedParameterContext,
boolean returnProxies,
boolean readOnly) {
return new ResultSetProcessingContextImpl(
resultSet,
session,
loadPlan,
aliasResolutionContext,
readOnly,
shouldUseOptionalEntityInstance,
returnProxies,
queryParameters,
namedParameterContext,
hadSubselectFetches
);
}
protected List