org.hibernate.loader.collection.SubselectOneToManyLoader Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
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* copy, or redistribute it subject to the terms and conditions of the GNU
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* This program is distributed in the hope that it will be useful,
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
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package org.hibernate.loader.collection;
import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.engine.spi.EntityKey;
import org.hibernate.engine.spi.LoadQueryInfluencers;
import org.hibernate.engine.spi.QueryParameters;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.engine.spi.TypedValue;
import org.hibernate.persister.collection.QueryableCollection;
import org.hibernate.type.Type;
/**
* Implements subselect fetching for a one to many association
* @author Gavin King
*/
public class SubselectOneToManyLoader extends OneToManyLoader {
private final Serializable[] keys;
private final Type[] types;
private final Object[] values;
private final Map namedParameters;
private final Map namedParameterLocMap;
public SubselectOneToManyLoader(
QueryableCollection persister,
String subquery,
Collection entityKeys,
QueryParameters queryParameters,
Map namedParameterLocMap,
SessionFactoryImplementor factory,
LoadQueryInfluencers loadQueryInfluencers) throws MappingException {
super( persister, 1, subquery, factory, loadQueryInfluencers );
keys = new Serializable[ entityKeys.size() ];
Iterator iter = entityKeys.iterator();
int i=0;
while ( iter.hasNext() ) {
keys[i++] = ( (EntityKey) iter.next() ).getIdentifier();
}
this.namedParameters = queryParameters.getNamedParameters();
this.types = queryParameters.getFilteredPositionalParameterTypes();
this.values = queryParameters.getFilteredPositionalParameterValues();
this.namedParameterLocMap = namedParameterLocMap;
}
@Override
public void initialize(Serializable id, SessionImplementor session) throws HibernateException {
loadCollectionSubselect(
session,
keys,
values,
types,
namedParameters,
getKeyType()
);
}
@Override
public int[] getNamedParameterLocs(String name) {
return namedParameterLocMap.get( name );
}
}