001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
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 sqlProjection(
045                    String sql, String[] columnAliases, Type[] types);
046    
047            public Projection sum(String propertyName);
048    
049    }