/*
 * 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 <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.loader.collection.plan;

import java.sql.ResultSet;

import org.hibernate.LockMode;
import org.hibernate.LockOptions;
import org.hibernate.engine.spi.LoadQueryInfluencers;
import org.hibernate.internal.CoreLogging;
import org.hibernate.loader.plan.exec.query.internal.QueryBuildingParametersImpl;
import org.hibernate.loader.plan.exec.query.spi.QueryBuildingParameters;
import org.hibernate.persister.collection.QueryableCollection;
import org.hibernate.type.Type;

import org.jboss.logging.Logger;

Superclass for loaders that initialize collections
Author:Gavin King, Gail Badner
See Also:
/** * Superclass for loaders that initialize collections * * @see org.hibernate.loader.collection.OneToManyLoader * @see org.hibernate.loader.collection.BasicCollectionLoader * @author Gavin King * @author Gail Badner */
public class CollectionLoader extends AbstractLoadPlanBasedCollectionInitializer { private static final Logger log = CoreLogging.logger( CollectionLoader.class ); public static Builder forCollection(QueryableCollection collectionPersister) { return new Builder( collectionPersister ); } @Override protected int[] getNamedParameterLocs(String name) { return new int[0]; //To change body of implemented methods use File | Settings | File Templates. } @Override protected void autoDiscoverTypes(ResultSet rs) { //To change body of implemented methods use File | Settings | File Templates. } protected static class Builder { private final QueryableCollection collectionPersister; private int batchSize = 1; private LoadQueryInfluencers influencers = LoadQueryInfluencers.NONE; private Builder(QueryableCollection collectionPersister) { this.collectionPersister = collectionPersister; } public Builder withBatchSize(int batchSize) { this.batchSize = batchSize; return this; } public Builder withInfluencers(LoadQueryInfluencers influencers) { this.influencers = influencers; return this; } public CollectionLoader byKey() { // capture current values in a new instance of QueryBuildingParametersImpl final QueryBuildingParameters currentBuildingParameters = new QueryBuildingParametersImpl( influencers, batchSize, LockMode.NONE, null ); return new CollectionLoader( collectionPersister, currentBuildingParameters ) ; } } public CollectionLoader( QueryableCollection collectionPersister, QueryBuildingParameters buildingParameters) { super( collectionPersister, buildingParameters ); if ( log.isDebugEnabled() ) { log.debugf( "Static select for collection %s: %s", collectionPersister.getRole(), getStaticLoadQuery().getSqlStatement() ); } } protected Type getKeyType() { return collectionPersister().getKeyType(); } public String toString() { return getClass().getName() + '(' + collectionPersister().getRole() + ')'; } }