//$Id: BasicCollectionLoader.java 7123 2005-06-13 20:10:20Z oneovthafew $
package org.hibernate.loader.collection;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.MappingException;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.loader.JoinWalker;
import org.hibernate.persister.collection.QueryableCollection;
/**
* Loads a collection of values or a many-to-many association.
* <br>
* The collection persister must implement <tt>QueryableCOllection<tt>. For
* other collections, create a customized subclass of <tt>Loader</tt>.
*
* @see OneToManyLoader
* @author Gavin King
*/
public class BasicCollectionLoader extends CollectionLoader {
private static final Log log = LogFactory.getLog(BasicCollectionLoader.class);
public BasicCollectionLoader(
QueryableCollection collectionPersister,
SessionFactoryImplementor session,
Map enabledFilters)
throws MappingException {
this(collectionPersister, 1, session, enabledFilters);
}
public BasicCollectionLoader(
QueryableCollection collectionPersister,
int batchSize,
SessionFactoryImplementor factory,
Map enabledFilters)
throws MappingException {
this(collectionPersister, batchSize, null, factory, enabledFilters);
}
protected BasicCollectionLoader(
QueryableCollection collectionPersister,
int batchSize,
String subquery,
SessionFactoryImplementor factory,
Map enabledFilters)
throws MappingException {
super(collectionPersister, factory, enabledFilters);
JoinWalker walker = new BasicCollectionJoinWalker(
collectionPersister,
batchSize,
subquery,
factory,
enabledFilters
);
initFromWalker( walker );
postInstantiate();
log.debug( "Static select for collection " + collectionPersister.getRole() + ": " + getSQLString() );
}
}
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