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Java > Open Source Codes > dlog4j > CategoryManager


1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 2 of the License, or
5  * (at your option) any later version.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU Library General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15  */
16 package dlog4j;
17
18 import java.util.Iterator JavaDoc;
19 import java.util.List JavaDoc;
20
21 import dlog4j.formbean.CategoryForm;
22 import dlog4j.formbean.SiteForm;
23 import dlog4j.formbean.UserForm;
24 import dlog4j.security.DlogRole;
25
26 import net.sf.hibernate.Criteria;
27 import net.sf.hibernate.HibernateException;
28 import net.sf.hibernate.Session;
29 import net.sf.hibernate.expression.Expression;
30 import net.sf.hibernate.expression.Order;
31
32 /**
33  * 日记分类管理器
34  * @author Liudong
35  */
36 public class CategoryManager {
37
38     /**
39      * 读取日记分类的详细信息(管理级别的方法)
40      * DlogCategoryAction的删除和更新分类方法用到该方法
41      * @param ssn
42      * @param site
43      * @param loginUser
44      * @param cat_id
45      * @return
46      * @throws HibernateException
47      */
48     public static CategoryForm getCategory(Session ssn, SiteForm site, int cat_id)
49         throws HibernateException {
50         Criteria crit = ssn.createCriteria(CategoryForm.class);
51         crit = crit.add(Expression.eq("site.id", new Integer JavaDoc(site.getId())));
52         crit = crit.add(Expression.eq("id", new Integer JavaDoc(cat_id)));
53         try {
54             List JavaDoc cats = crit.list();
55             if(cats.size()>0)
56                 return (CategoryForm)cats.get(0);
57         }catch(HibernateException e) {}
58         return null;
59     }
60     
61     /**
62      * 查询指定站点的所有日记分类(管理级别的方法)
63      * DlogCategoryAction: doCreateCategory, doMoveDown, doMoveUp
64      * @param ssn
65      * @param site
66      * @return
67      * @throws SQLException
68      * @throws HibernateException
69      */
70     public static List JavaDoc listCategories(Session ssn, SiteForm site)
71         throws HibernateException {
72         Criteria crit = ssn.createCriteria(CategoryForm.class);
73         crit = crit.add(Expression.eq("site.id", new Integer JavaDoc(site.getId())));
74         crit = crit.addOrder(Order.asc("order"));
75         return crit.list();
76     }
77     /**
78      * 查询某个用户可见的所有日记分类,用于浏览日记而非添加日记
79      * CategoryTag.java (一般用途)
80      * @param ssn
81      * @param site
82      * @return
83      * @throws SQLException
84      * @throws HibernateException
85      */
86     public static List JavaDoc listCategories(Session ssn, SiteForm site, UserForm loginUser)
87         throws HibernateException {
88         Criteria crit = ssn.createCriteria(CategoryForm.class);
89         crit = crit.add(Expression.eq("site.id", new Integer JavaDoc(site.getId())));
90         crit = crit.addOrder(Order.asc("order"));
91         List JavaDoc cats = crit.list();
92         Iterator JavaDoc icats = cats.iterator();
93         int role = (loginUser!=null)?loginUser.getUserRole():DlogRole.ROLE_GUEST;
94         int[] ncats = (loginUser!=null)?loginUser.getOwnerCatids():new int[0];
95         
96         while(role!=DlogRole.ROLE_MANAGER && icats.hasNext()){
97             CategoryForm cat = (CategoryForm)icats.next();
98             if(role==DlogRole.ROLE_BUDDY){
99                 if(cat.getType()==CategoryForm.TYPE_OWNER){
100                     int i=0;
101                     for(;i<ncats.length;i++){
102                         if(cat.getId()==ncats[i])
103                             break;
104                     }
105                     if(i>=ncats.length)
106                         icats.remove();
107                 }
108             }
109             else{
110                 if(cat.getType()==CategoryForm.TYPE_OWNER)
111                     icats.remove();
112             }
113         }
114         return cats;
115     }
116
117     /**
118      * 查询某个用户可见的所有日记分类,用于浏览日记而非添加日记
119      * CategoryTag.java (一般用途)
120      * @param ssn
121      * @param site
122      * @return
123      * @throws SQLException
124      * @throws HibernateException
125      */
126     public static List JavaDoc listCategoriesForModify(Session ssn, SiteForm site, UserForm loginUser)
127         throws HibernateException {
128         Criteria crit = ssn.createCriteria(CategoryForm.class);
129         crit = crit.add(Expression.eq("site.id", new Integer JavaDoc(site.getId())));
130         crit = crit.addOrder(Order.asc("order"));
131         List JavaDoc cats = crit.list();
132         Iterator JavaDoc icats = cats.iterator();
133         int role = (loginUser!=null)?loginUser.getRole().getId():DlogRole.ROLE_GUEST;
134         int[] ncats = (loginUser!=null)?loginUser.getOwnerCatids():new int[0];
135         
136         while(role!=DlogRole.ROLE_MANAGER && icats.hasNext()){
137             CategoryForm cat = (CategoryForm)icats.next();
138             if(role==DlogRole.ROLE_BUDDY){
139                 if(cat.getType()==CategoryForm.TYPE_OWNER){
140                     int i=0;
141                     for(;i<ncats.length;i++){
142                         if(cat.getId()==ncats[i])
143                             break;
144                     }
145                     if(i<ncats.length)
146                         continue;
147                 }
148                 else
149                 if(cat.getType()==CategoryForm.TYPE_COMMON)
150                     continue;
151             }
152             if(role==DlogRole.ROLE_FRIEND){
153                 if(cat.getType()==CategoryForm.TYPE_COMMON){
154                     int i=0;
155                     for(;i<ncats.length;i++){
156                         if(cat.getId()==ncats[i])
157                             break;
158                     }
159                     if(i<ncats.length)
160                         continue;
161                 }
162             }
163             icats.remove();
164         }
165         return cats;
166     }
167 }
168
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