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1 package com.genimen.djeneric.web.util;
2
3 import java.io.FileNotFoundException  ;
4 import java.io.InputStream ;
5 import java.io.Serializable ;
6 import java.util.ArrayList ;
7 import java.util.Iterator ;
8
9 import com.genimen.djeneric.repository.DjContext;
10 import com.genimen.djeneric.repository.DjCredentials;
11 import com.genimen.djeneric.repository.DjExtent;
12 import com.genimen.djeneric.repository.DjMessenger;
13 import com.genimen.djeneric.repository.DjModelView;
14 import com.genimen.djeneric.repository.DjPersistenceManager;
15 import com.genimen.djeneric.repository.DjPersistenceManagerFactory;
16 import com.genimen.djeneric.repository.DjRepositoryDescriptor;
17 import com.genimen.djeneric.repository.DjSession;
18 import com.genimen.djeneric.repository.exceptions.DjenericException;
19 import com.genimen.djeneric.repository.exceptions.LogonException;
20 import com.genimen.djeneric.repository.exceptions.ObjectNotDefinedException;
21 import com.genimen.djeneric.structure.ResourceDefinition;
22 import com.genimen.djeneric.tools.io.DjenericDocumentHandler;
23 import com.genimen.djeneric.web.renderers.tree.WebTree;
24
25 public class DjenericSessionManager implements Serializable , DjMessenger
26 {
27 private static final long serialVersionUID = 1L;
28
29 private DjPersistenceManager _mgr;
30 private DjSession _primarySession;
31 private DjModelView _view;
32 private WebTree _tree;
33 private DjenericDocumentHandler _viewHandler;
34 private ResourceDefinition[] _images;
35 private ArrayList _activeSessions = new ArrayList ();
36 private DjenericXSLTransform _transformer = null;
37 private boolean _loggedIn = false;
38
39 private String _password;
40 private String _userid;
41 DjPersistenceManagerFactory _mgrFactory;
42
43 public DjenericSessionManager(InputStream repositories) throws FileNotFoundException , DjenericException
44 {
45 _mgrFactory = new DjPersistenceManagerFactory(this, repositories);
46 }
47
48 public DjSession getPrimarySession()
49 {
50 return _primarySession;
51 }
52
53 public WebTree getTree() throws DjenericException
54 {
55 if (_tree == null)
56 {
57 _tree = new WebTree(getPrimarySession(), getView().getExtentUsages());
58 }
59 return _tree;
60 }
61
62 public void releaseDatasources()
63 {
64 Iterator it = _activeSessions.iterator();
65 while (it.hasNext())
66 {
67 DjSession session = (DjSession) it.next();
68 if (session.isValid()) session.releaseDatasources();
69 else it.remove();
70 }
71 }
72
73 public DjCredentials getCredentials(DjRepositoryDescriptor repository) throws LogonException
74 {
75 DjCredentials cred = new DjCredentials();
76 cred.setUserid(getUserId());
77 cred.setPassword(getPassword());
78 return cred;
79 }
80
81 public DjContext selectContext(DjContext[] ctxts) throws LogonException
82 {
83 for (int i = 0; i < ctxts.length; i++)
84 {
85 if (ctxts[i].getCode().equals(getContextCode())) return ctxts[i];
86 }
87 throw new LogonException("Context " + getContextCode() + " not found");
88 }
89
90 public DjRepositoryDescriptor selectRepository(DjRepositoryDescriptor[] descriptors) throws DjenericException
91 {
92 for (int i = 0; i < descriptors.length; i++)
93 {
94 if (descriptors[i].getName().equals(getRepositoryName())) return descriptors[i];
95 }
96 throw new DjenericException("Repository " + getRepositoryName() + " not found");
97 }
98
99 public DjModelView getView() throws DjenericException
100 {
101 if (_view == null)
102 {
103 DjModelView[] views = _mgr.getCurrentUser().getViews();
104 if (views.length == 0) throw new DjenericException("No views defined for current user");
105
106 if (getViewCode() == null) _view = views[0];
107 else
108 {
109 for (int i = 0; i < views.length; i++)
110 {
111 if (views[i].getCode().equals(getViewCode())) _view = views[i];
112 }
113 }
114
115 if (_view == null) throw new DjenericException("View " + getViewCode() + " not found");
116
117 }
118 return _view;
119 }
120
121 public void showMessage(String title, String msg)
123 {
124 System.out.println(msg);
125 }
126
127 public void showWarning(String title, String msg)
129 {
130 System.err.println(msg);
131 }
132
133 public String getPassword()
135 {
136 return _password;
137 }
138
139 public String getUserId()
140 {
141 return _userid;
142 }
143
144 public String getContextCode()
145 {
146 return "dflt";
147 }
148
149 public String getRepositoryName()
150 {
151 return "Hypersonic";
152 }
153
154 public String getViewCode()
155 {
156 return null;
158 }
159
160 public ResourceDefinition getResource(String fileName) throws DjenericException
161 {
162 DjenericDocumentHandler vh = getViewHandler();
163 return vh.getResource(fileName);
164 }
165
166 private DjenericDocumentHandler getViewHandler() throws DjenericException
167 {
168 if (_viewHandler == null)
169 {
170 _viewHandler = getView().getDocumentHandler();
171 }
172 return _viewHandler;
173 }
174
175 public ResourceDefinition[] getImages() throws DjenericException
176 {
177 if (_images == null)
178 {
179 DjenericDocumentHandler vh = getViewHandler();
180 ResourceDefinition[] res = vh.getResources();
181 ArrayList result = new ArrayList ();
182 for (int i = 0; i < res.length; i++)
183 {
184 if (res[i].isImageIcon()) result.add(res[i]);
185 }
186 _images = (ResourceDefinition[]) result.toArray(new ResourceDefinition[result.size()]);
187 }
188
189 return _images;
190 }
191
192 public DjSession createSession() throws DjenericException
193 {
194 DjSession session = _mgr.createSession();
195 _activeSessions.add(session);
196 return session;
197 }
198
199 public DjExtent getExtent(String extentName) throws ObjectNotDefinedException
200 {
201 return _mgr.getExtent(extentName);
202 }
203
204 public DjenericXSLTransform getTransformer()
205 {
206 if (_transformer == null) _transformer = new DjenericXSLTransform("com/genimen/djeneric/templates/dflt");
207 return _transformer;
208 }
209
210 public boolean isLoggedIn()
211 {
212 return _loggedIn;
213 }
214
215 public void login(String userid, String password) throws DjenericException
216 {
217 _userid = userid;
218 _password = password;
219
220 if(_mgr != null) _mgr.close();
221 _mgr = _mgrFactory.createInstance();
222 _mgr.determineContext();
223
224 _mgr.setEstimatedConcurrentSessions(0);
226 _primarySession = _mgr.createSession();
227 _activeSessions.add(_primarySession);
228 _loggedIn = true;
229 }
230 }
231 |
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