/*
* 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
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* 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:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.loader.custom.sql;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.hibernate.HibernateException;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.query.spi.sql.NativeSQLQueryReturn;
import org.hibernate.loader.custom.CustomQuery;
import org.hibernate.persister.collection.SQLLoadableCollection;
import org.hibernate.persister.entity.SQLLoadable;
import org.jboss.logging.Logger;
/**
* Implements Hibernate's built-in support for native SQL queries.
* <p/>
* This support is built on top of the notion of "custom queries"...
*
* @author Gavin King
* @author Max Andersen
* @author Steve Ebersole
*/
public class SQLCustomQuery implements CustomQuery {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, SQLCustomQuery.class.getName());
private final String sql;
private final Set querySpaces = new HashSet();
private final Map namedParameterBindPoints = new HashMap();
private final List customQueryReturns = new ArrayList();
public String getSQL() {
return sql;
}
public Set getQuerySpaces() {
return querySpaces;
}
public Map getNamedParameterBindPoints() {
return namedParameterBindPoints;
}
public List getCustomQueryReturns() {
return customQueryReturns;
}
public SQLCustomQuery(
final String sqlQuery,
final NativeSQLQueryReturn[] queryReturns,
final Collection additionalQuerySpaces,
final SessionFactoryImplementor factory) throws HibernateException {
LOG.trace("Starting processing of sql query [" + sqlQuery + "]");
SQLQueryReturnProcessor processor = new SQLQueryReturnProcessor(queryReturns, factory);
SQLQueryReturnProcessor.ResultAliasContext aliasContext = processor.process();
// Map[] propertyResultMaps = (Map[]) processor.getPropertyResults().toArray( new Map[0] );
// Map[] collectionResultMaps = (Map[]) processor.getCollectionPropertyResults().toArray( new Map[0] );
//
// List collectionSuffixes = new ArrayList();
// List collectionOwnerAliases = processor.getCollectionOwnerAliases();
// List collectionPersisters = processor.getCollectionPersisters();
// int size = collectionPersisters.size();
// if (size!=0) {
// collectionOwners = new int[size];
// collectionRoles = new String[size];
// //collectionDescriptors = new CollectionAliases[size];
// for ( int i=0; i<size; i++ ) {
// CollectionPersister collectionPersister = (CollectionPersister) collectionPersisters.get(i);
// collectionRoles[i] = ( collectionPersister ).getRole();
// collectionOwners[i] = processor.getAliases().indexOf( collectionOwnerAliases.get(i) );
// String suffix = i + "__";
// collectionSuffixes.add(suffix);
// //collectionDescriptors[i] = new GeneratedCollectionAliases( collectionResultMaps[i], collectionPersister, suffix );
// }
// }
// else {
// collectionRoles = null;
// //collectionDescriptors = null;
// collectionOwners = null;
// }
//
// String[] aliases = ArrayHelper.toStringArray( processor.getAliases() );
// String[] collAliases = ArrayHelper.toStringArray( processor.getCollectionAliases() );
// String[] collSuffixes = ArrayHelper.toStringArray(collectionSuffixes);
//
// SQLLoadable[] entityPersisters = (SQLLoadable[]) processor.getPersisters().toArray( new SQLLoadable[0] );
// SQLLoadableCollection[] collPersisters = (SQLLoadableCollection[]) collectionPersisters.toArray( new SQLLoadableCollection[0] );
// lockModes = (LockMode[]) processor.getLockModes().toArray( new LockMode[0] );
//
// scalarColumnAliases = ArrayHelper.toStringArray( processor.getScalarColumnAliases() );
// scalarTypes = ArrayHelper.toTypeArray( processor.getScalarTypes() );
//
// // need to match the "sequence" of what we return. scalar first, entity last.
// returnAliases = ArrayHelper.join(scalarColumnAliases, aliases);
//
// String[] suffixes = BasicLoader.generateSuffixes(entityPersisters.length);
SQLQueryParser parser = new SQLQueryParser( sqlQuery, new ParserContext( aliasContext ), factory );
this.sql = parser.process();
this.namedParameterBindPoints.putAll( parser.getNamedParameters() );
// SQLQueryParser parser = new SQLQueryParser(
// sqlQuery,
// processor.getAlias2Persister(),
// processor.getAlias2Return(),
// aliases,
// collAliases,
// collPersisters,
// suffixes,
// collSuffixes
// );
//
// sql = parser.process();
//
// namedParameterBindPoints = parser.getNamedParameters();
customQueryReturns.addAll( processor.generateCustomReturns( parser.queryHasAliases() ) );
// // Populate entityNames, entityDescrptors and querySpaces
// entityNames = new String[entityPersisters.length];
// entityDescriptors = new EntityAliases[entityPersisters.length];
// for (int i = 0; i < entityPersisters.length; i++) {
// SQLLoadable persister = entityPersisters[i];
// //alias2Persister.put( aliases[i], persister );
// //TODO: Does not consider any other tables referenced in the query
// ArrayHelper.addAll( querySpaces, persister.getQuerySpaces() );
// entityNames[i] = persister.getEntityName();
// if ( parser.queryHasAliases() ) {
// entityDescriptors[i] = new DefaultEntityAliases(
// propertyResultMaps[i],
// entityPersisters[i],
// suffixes[i]
// );
// }
// else {
// entityDescriptors[i] = new ColumnEntityAliases(
// propertyResultMaps[i],
// entityPersisters[i],
// suffixes[i]
// );
// }
// }
if ( additionalQuerySpaces != null ) {
querySpaces.addAll( additionalQuerySpaces );
}
// if (size!=0) {
// collectionDescriptors = new CollectionAliases[size];
// for ( int i=0; i<size; i++ ) {
// CollectionPersister collectionPersister = (CollectionPersister) collectionPersisters.get(i);
// String suffix = i + "__";
// if( parser.queryHasAliases() ) {
// collectionDescriptors[i] = new GeneratedCollectionAliases( collectionResultMaps[i], collectionPersister, suffix );
// } else {
// collectionDescriptors[i] = new ColumnCollectionAliases( collectionResultMaps[i], (SQLLoadableCollection) collectionPersister );
// }
// }
// }
// else {
// collectionDescriptors = null;
// }
//
//
// // Resolve owners
// Map alias2OwnerAlias = processor.getAlias2OwnerAlias();
// int[] ownersArray = new int[entityPersisters.length];
// for ( int j=0; j < aliases.length; j++ ) {
// String ownerAlias = (String) alias2OwnerAlias.get( aliases[j] );
// if ( StringHelper.isNotEmpty(ownerAlias) ) {
// ownersArray[j] = processor.getAliases().indexOf( ownerAlias );
// }
// else {
// ownersArray[j] = -1;
// }
// }
// if ( ArrayHelper.isAllNegative(ownersArray) ) {
// ownersArray = null;
// }
// this.entityOwners = ownersArray;
}
private static class ParserContext implements SQLQueryParser.ParserContext {
private final SQLQueryReturnProcessor.ResultAliasContext aliasContext;
public ParserContext(SQLQueryReturnProcessor.ResultAliasContext aliasContext) {
this.aliasContext = aliasContext;
}
public boolean isEntityAlias(String alias) {
return getEntityPersisterByAlias( alias ) != null;
}
public SQLLoadable getEntityPersisterByAlias(String alias) {
return aliasContext.getEntityPersister( alias );
}
public String getEntitySuffixByAlias(String alias) {
return aliasContext.getEntitySuffix( alias );
}
public boolean isCollectionAlias(String alias) {
return getCollectionPersisterByAlias( alias ) != null;
}
public SQLLoadableCollection getCollectionPersisterByAlias(String alias) {
return aliasContext.getCollectionPersister( alias );
}
public String getCollectionSuffixByAlias(String alias) {
return aliasContext.getCollectionSuffix( alias );
}
public Map getPropertyResultsMapByAlias(String alias) {
return aliasContext.getPropertyResultsMap( alias );
}
}
}