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Java > Open Source Codes > com > blandware > atleap > persistence > hibernate > core > ContentImageDAOHibernate


1 /*
2  * Copyright 2004 Blandware (http://www.blandware.com)
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.blandware.atleap.persistence.hibernate.core;
17
18 import com.blandware.atleap.common.util.PartialCollection;
19 import com.blandware.atleap.common.util.QueryInfo;
20 import com.blandware.atleap.model.core.ContentImage;
21 import com.blandware.atleap.model.core.ResourceData;
22 import com.blandware.atleap.model.core.Role;
23 import com.blandware.atleap.persistence.core.ContentImageDAO;
24 import com.blandware.atleap.persistence.exception.DeleteException;
25
26 import java.util.ArrayList JavaDoc;
27 import java.util.List JavaDoc;
28 import java.util.Date JavaDoc;
29
30 /**
31  * <p>Hibernate implementation of ContentImageDAO</p>
32  * <p><a HREF="ContentImageDAOHibernate.java.htm"><i>View Source</i></a></p>
33  *
34  * @author Sergey Zubtcovskii <a HREF="mailto:sergey.zubtcovskii@blandware.com">&lt;sergey.zubtcovskii@blandware.com&gt;</a>
35  * @version $Revision: 1.9 $ $Date: 2005/08/06 17:13:04 $
36  */
37 public class ContentImageDAOHibernate extends ContentResourceDAOHibernate implements ContentImageDAO {
38
39     /**
40      * Creates new instance of ContentImageDAOHibernate
41      */
42     public ContentImageDAOHibernate() {
43     }
44
45     // ~ CRUD Methods ================================================================
46
47     /**
48      * @see com.blandware.atleap.persistence.core.ContentImageDAO#createContentImage(com.blandware.atleap.model.core.ContentImage, com.blandware.atleap.model.core.ResourceData)
49      */
50     public Long JavaDoc createContentImage(ContentImage contentImage, ResourceData resourceData) {
51         contentImage.setLastUpdatedDatetime(new Date JavaDoc());
52         contentImage.setUsageCounter(new Integer JavaDoc(0));
53         getHibernateTemplate().save(resourceData);
54         contentImage.setResourceData(resourceData);
55         return (Long JavaDoc) getHibernateTemplate().save(contentImage);
56     }
57
58     /**
59      * @see com.blandware.atleap.persistence.core.ContentImageDAO#retrieveContentImage(Long)
60      */
61     public ContentImage retrieveContentImage(Long JavaDoc contentImageId) {
62         return (ContentImage) getHibernateTemplate().get(ContentImage.class, contentImageId);
63     }
64
65     /**
66      * @see com.blandware.atleap.persistence.core.ContentImageDAO#updateContentImage(com.blandware.atleap.model.core.ContentImage, com.blandware.atleap.model.core.ResourceData)
67      */
68     public void updateContentImage(ContentImage contentImage, ResourceData resourceData) {
69         contentImage.setLastUpdatedDatetime(new Date JavaDoc());
70         getHibernateTemplate().saveOrUpdate(resourceData);
71         contentImage.setResourceData(resourceData);
72         getHibernateTemplate().update(contentImage);
73     }
74
75     /**
76      * @see com.blandware.atleap.persistence.core.ContentImageDAO#deleteContentImage(com.blandware.atleap.model.core.ContentImage)
77      */
78     public void deleteContentImage(ContentImage contentImage) throws DeleteException {
79         getHibernateTemplate().delete(contentImage);
80
81         // break relations between roles and deleted image
82 List JavaDoc roles = new ArrayList JavaDoc(contentImage.getRoles());
83         for ( int i = 0; i < roles.size(); i++ ) {
84             Role role = (Role) roles.get(i);
85             contentImage.removeRole(role);
86         }
87     }
88
89     // ~ Additional methods ================================================================
90
91     /**
92      * @see com.blandware.atleap.persistence.core.ContentImageDAO#listContentImages(com.blandware.atleap.common.util.QueryInfo)
93      */
94     public PartialCollection listContentImages(QueryInfo queryInfo) {
95         String JavaDoc whereClause = new String JavaDoc();
96         String JavaDoc orderByClause = new String JavaDoc();
97         if ( queryInfo != null ) {
98             whereClause = queryInfo.getWhereClause();
99             orderByClause = queryInfo.getOrderByClause();
100             if ( whereClause != null ) {
101                 whereClause = " where " + whereClause;
102             } else {
103                 whereClause = new String JavaDoc();
104             }
105             if ( orderByClause != null && orderByClause.length() != 0 ) {
106                 orderByClause = " order by " + orderByClause;
107             } else {
108                 orderByClause = new String JavaDoc();
109             }
110         }
111
112         List JavaDoc list = null;
113         Integer JavaDoc total = null;
114         String JavaDoc hqlPart = null;
115         hqlPart = "from ContentImage r left outer join r.roles as role";
116
117         hqlPart += whereClause;
118
119         if ( queryInfo != null && (queryInfo.getLimit() != null || queryInfo.getOffset() != null) ) {
120             String JavaDoc hqlForTotal = "select count(distinct r.id) " + hqlPart;
121             total = (Integer JavaDoc) findUniqueResult(hqlForTotal);
122             if ( total == null ) {
123                 total = new Integer JavaDoc(0);
124             }
125         }
126
127         // If we don't have any info about the total number of results yet or
128 // we know that there's something that will be found, then fetch data
129 if ( total == null || total.intValue() > 0 ) {
130             String JavaDoc hql = "select distinct r " + hqlPart + orderByClause;
131             list = executeFind(hql, queryInfo);
132             if ( total == null ) {
133                 total = new Integer JavaDoc(list.size());
134             }
135         } else {
136             list = new ArrayList JavaDoc();
137         }
138         return new PartialCollection(list, total);
139
140     }
141
142     /**
143      * @see com.blandware.atleap.persistence.core.ContentImageDAO#findContentImageByUri(String)
144      */
145     public ContentImage findContentImageByUri(String JavaDoc uri) {
146         return (ContentImage) findUniqueResult("from ContentImage r where r.uri = ?", new Object JavaDoc[]{uri});
147     }
148 }
149
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