001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.dao.orm;
016    
017    /**
018     * @author Brian Wing Shun Chan
019     */
020    public interface ProjectionFactory {
021    
022            public Projection alias(Projection projection, String alias);
023    
024            public Projection avg(String propertyName);
025    
026            public Projection count(String propertyName);
027    
028            public Projection countDistinct(String propertyName);
029    
030            public Projection distinct(Projection projection);
031    
032            public Projection groupProperty(String propertyName);
033    
034            public Projection max(String propertyName);
035    
036            public Projection min(String propertyName);
037    
038            public ProjectionList projectionList();
039    
040            public Projection property(String propertyName);
041    
042            public Projection rowCount();
043    
044            public Projection sum(String propertyName);
045    
046    }