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.dao.orm.hibernate;
016    
017    import com.liferay.portal.kernel.dao.orm.Criterion;
018    import com.liferay.portal.kernel.dao.orm.DynamicQuery;
019    import com.liferay.portal.kernel.dao.orm.Order;
020    import com.liferay.portal.kernel.dao.orm.Projection;
021    import com.liferay.portal.kernel.dao.orm.ProjectionFactoryUtil;
022    import com.liferay.portal.kernel.dao.orm.QueryUtil;
023    import com.liferay.portal.kernel.dao.orm.Session;
024    import com.liferay.portal.kernel.util.ListUtil;
025    import com.liferay.portal.kernel.util.UnmodifiableList;
026    
027    import java.util.List;
028    
029    import org.hibernate.Criteria;
030    import org.hibernate.criterion.DetachedCriteria;
031    
032    /**
033     * @author Brian Wing Shun Chan
034     */
035    public class DynamicQueryImpl implements DynamicQuery {
036    
037            public DynamicQueryImpl(DetachedCriteria detachedCriteria) {
038                    _detachedCriteria = detachedCriteria;
039            }
040    
041            @Override
042            public DynamicQuery add(Criterion criterion) {
043                    CriterionImpl criterionImpl = (CriterionImpl)criterion;
044    
045                    _detachedCriteria.add(criterionImpl.getWrappedCriterion());
046    
047                    return this;
048            }
049    
050            @Override
051            public DynamicQuery addOrder(Order order) {
052                    OrderImpl orderImpl = (OrderImpl)order;
053    
054                    _detachedCriteria.addOrder(orderImpl.getWrappedOrder());
055    
056                    return this;
057            }
058    
059            @Override
060            public void compile(Session session) {
061                    org.hibernate.Session hibernateSession =
062                            (org.hibernate.Session)session.getWrappedSession();
063    
064                    _criteria = _detachedCriteria.getExecutableCriteria(hibernateSession);
065    
066                    if ((_start == null) || (_end == null)) {
067                            return;
068                    }
069    
070                    int start = _start.intValue();
071                    int end = _end.intValue();
072    
073                    if ((start == QueryUtil.ALL_POS) && (end == QueryUtil.ALL_POS)) {
074                            return;
075                    }
076    
077                    _criteria = _criteria.setFirstResult(start);
078                    _criteria = _criteria.setMaxResults(end - start);
079            }
080    
081            public DetachedCriteria getDetachedCriteria() {
082                    return _detachedCriteria;
083            }
084    
085            @Override
086            @SuppressWarnings("rawtypes")
087            public List list() {
088                    return list(true);
089            }
090    
091            @Override
092            @SuppressWarnings("rawtypes")
093            public List list(boolean unmodifiable) {
094                    List list = _criteria.list();
095    
096                    if (unmodifiable) {
097                            return new UnmodifiableList(list);
098                    }
099                    else {
100                            return ListUtil.copy(list);
101                    }
102            }
103    
104            @Override
105            public void setLimit(int start, int end) {
106                    _start = Integer.valueOf(start);
107                    _end = Integer.valueOf(end);
108            }
109    
110            @Override
111            public DynamicQuery setProjection(Projection projection) {
112                    return setProjection(projection, true);
113            }
114    
115            @Override
116            public DynamicQuery setProjection(
117                    Projection projection, boolean useColumnAlias) {
118    
119                    if (!useColumnAlias) {
120                            projection = ProjectionFactoryUtil.sqlProjection(
121                                    _detachedCriteria.getAlias() + "_." + projection.toString(),
122                                    null, null);
123                    }
124    
125                    ProjectionImpl projectionImpl = (ProjectionImpl)projection;
126    
127                    _detachedCriteria.setProjection(projectionImpl.getWrappedProjection());
128    
129                    return this;
130            }
131    
132            private Criteria _criteria;
133            private DetachedCriteria _detachedCriteria;
134            private Integer _end;
135            private Integer _start;
136    
137    }