/*
* Hibernate OGM, Domain model persistence for NoSQL datastores
*
* 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.ogm.datastore.mongodb.query.parsing.impl;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.hql.ast.spi.AstProcessingChain;
import org.hibernate.hql.ast.spi.AstProcessor;
import org.hibernate.hql.ast.spi.EntityNamesResolver;
import org.hibernate.hql.ast.spi.QueryRendererProcessor;
import org.hibernate.hql.ast.spi.QueryResolverProcessor;
/**
* AST processing chain for creating MongoDB queries (in form of {@link com.mongodb.DBObject}s from HQL queries.
*
* @author Gunnar Morling
*/
public class MongoDBProcessingChain implements AstProcessingChain<MongoDBQueryParsingResult> {
private final QueryResolverProcessor resolverProcessor;
private final QueryRendererProcessor rendererProcessor;
private final MongoDBQueryRendererDelegate rendererDelegate;
public MongoDBProcessingChain(SessionFactoryImplementor sessionFactory, EntityNamesResolver entityNames, Map<String, Object> namedParameters) {
this.resolverProcessor = new QueryResolverProcessor( new MongoDBQueryResolverDelegate() );
MongoDBPropertyHelper propertyHelper = new MongoDBPropertyHelper( sessionFactory, entityNames );
MongoDBQueryRendererDelegate rendererDelegate = new MongoDBQueryRendererDelegate(
entityNames,
propertyHelper,
namedParameters );
this.rendererProcessor = new QueryRendererProcessor( rendererDelegate );
this.rendererDelegate = rendererDelegate;
}
@Override
public Iterator<AstProcessor> iterator() {
return Arrays.asList( resolverProcessor, rendererProcessor ).iterator();
}
@Override
public MongoDBQueryParsingResult getResult() {
return rendererDelegate.getResult();
}
}