Source Code Cross Referenced for DatabaseRmsService.java in  » Workflow-Engines » wfmopen-2.1.1 » de » danet » an » workflow » rmsimpls » dbrms » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » wfmopen 2.1.1 » de.danet.an.workflow.rmsimpls.dbrms 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * This file is part of the WfMOpen project.
003:         * Copyright (C) 2001-2005 Danet GmbH (www.danet.de), BU BTS.
004:         * All rights reserved.
005:         *
006:         * This program is free software; you can redistribute it and/or modify
007:         * it under the terms of the GNU General Public License as published by
008:         * the Free Software Foundation; either version 2 of the License, or
009:         * (at your option) any later version.
010:         *
011:         * This program is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014:         * GNU General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU General Public License
017:         * along with this program; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
019:         *
020:         * $Id: DatabaseRmsService.java,v 1.10 2006/12/20 10:30:08 drmlipp Exp $
021:         *
022:         * $Log: DatabaseRmsService.java,v $
023:         * Revision 1.10  2006/12/20 10:30:08  drmlipp
024:         * Fixed id handling.
025:         *
026:         * Revision 1.9  2006/12/12 10:03:10  drmlipp
027:         * Fixed authorizers.
028:         *
029:         * Revision 1.8  2006/10/15 19:29:51  mlipp
030:         * Merged changes from 1.4.x up to 1.4ea3pre1.
031:         *
032:         * Revision 1.7.2.1  2006/10/14 21:34:05  mlipp
033:         * Simplified resource assignment service implementation.
034:         *
035:         * Revision 1.7  2006/10/03 11:13:05  mlipp
036:         * Improved.
037:         *
038:         * Revision 1.6  2006/10/02 20:54:32  mlipp
039:         * Adapted to new resource base classes.
040:         *
041:         * Revision 1.5  2006/09/29 14:01:17  drmlipp
042:         * Improved property names.
043:         *
044:         * Revision 1.4  2006/09/29 12:32:11  drmlipp
045:         * Consistently using WfMOpen as projct name now.
046:         *
047:         * Revision 1.3  2006/09/29 11:39:16  drmlipp
048:         * Various fixes.
049:         *
050:         * Revision 1.2  2006/09/28 21:28:09  mlipp
051:         * Implementation continued.
052:         *
053:         * Revision 1.1  2006/09/28 15:03:56  drmlipp
054:         * Getting started with db RMS.
055:         *
056:         */
057:        package de.danet.an.workflow.rmsimpls.dbrms;
058:
059:        import java.rmi.RemoteException;
060:        import java.security.Principal;
061:        import java.sql.Connection;
062:        import java.sql.PreparedStatement;
063:        import java.sql.ResultSet;
064:        import java.sql.SQLException;
065:        import java.util.ArrayList;
066:        import java.util.Collection;
067:        import java.util.List;
068:        import java.util.Properties;
069:
070:        import javax.naming.NamingException;
071:        import javax.sql.DataSource;
072:
073:        import de.danet.an.util.EJBUtil;
074:        import de.danet.an.util.JDBCUtil;
075:        import de.danet.an.workflow.omgcore.WfResource;
076:        import de.danet.an.workflow.spis.rms.DefaultGroupResource;
077:        import de.danet.an.workflow.spis.rms.DefaultRoleResource;
078:        import de.danet.an.workflow.spis.rms.DefaultUserResource;
079:        import de.danet.an.workflow.spis.rms.FactoryConfigurationError;
080:        import de.danet.an.workflow.spis.rms.ResourceAssignmentContext;
081:        import de.danet.an.workflow.spis.rms.ResourceManagementService;
082:        import de.danet.an.workflow.spis.rms.ResourceNotFoundException;
083:
084:        /**
085:         * Implements the {@link
086:         * de.danet.an.workflow.spis.rms.ResourceManagementService resource
087:         * management service} based on an database.
088:         *
089:         * @author <a href="mailto:lipp@danet.de">Michael Lipp</a>
090:         * @version $Revision: 1.10 $
091:         */
092:
093:        public class DatabaseRmsService implements  ResourceManagementService {
094:
095:            private static final org.apache.commons.logging.Log logger = org.apache.commons.logging.LogFactory
096:                    .getLog(DatabaseRmsService.class);
097:
098:            private ResourceAssignmentContext rasCtx = null;
099:            private Properties props = null;
100:
101:            /**
102:             * Constructs a new resource management service.
103:             *
104:             * @param props the configuration properties
105:             * @param rasvc the resource assignment service
106:             * @throws FactoryConfigurationError if the required resources
107:             * cannot be obtained
108:             */
109:            public DatabaseRmsService(Properties props,
110:                    ResourceAssignmentContext rasCtx)
111:                    throws FactoryConfigurationError {
112:                this .props = props;
113:                this .rasCtx = rasCtx;
114:            }
115:
116:            private DataSource ds() {
117:                try {
118:                    return (DataSource) EJBUtil.lookupJNDIEntry(props
119:                            .getProperty("dataSource"));
120:                } catch (NamingException e) {
121:                    throw (IllegalStateException) (new IllegalStateException(
122:                            "Configured data source "
123:                                    + props.getProperty("dataSource")
124:                                    + " is unknown: " + e.getMessage()))
125:                            .initCause(e);
126:                }
127:            }
128:
129:            /**
130:             * Given a {@link java.security.Principal principal}, return the
131:             * workflow resource associated with this principal by the
132:             * resource management facility.<P>
133:             *
134:             * @param principal the principal.
135:             * @return a <code>WfResource</code> object corresponding to the
136:             * given principal.
137:             * @throws ResourceNotFoundException if the StaffMember with the given key
138:             * can't be found or the key is not associate with an StaffMember object.
139:             * @throws RemoteException if a system-level error occurs.
140:             */
141:            public WfResource asResource(Principal principal)
142:                    throws ResourceNotFoundException, RemoteException {
143:                Connection con = null;
144:                PreparedStatement ps = null;
145:                ResultSet rs = null;
146:                try {
147:                    con = ds().getConnection();
148:                    ps = con.prepareStatement(props
149:                            .getProperty("userLookupQuery"));
150:                    ps.setString(1, principal.getName());
151:                    rs = ps.executeQuery();
152:                    if (!rs.next()) {
153:                        throw new ResourceNotFoundException("No such user: "
154:                                + principal.getName());
155:                    }
156:                    return new DefaultUserResource(rasCtx, rs.getString(1), rs
157:                            .getString(2));
158:                } catch (SQLException e) {
159:                    throw new RemoteException(e.getMessage(), e);
160:                } finally {
161:                    try {
162:                        JDBCUtil.closeAll(rs, ps, con);
163:                    } catch (SQLException e) {
164:                        logger.warn(
165:                                "Cannot close (ignored): " + e.getMessage(), e);
166:                    }
167:                }
168:            }
169:
170:            /* Comment copied from interface */
171:            public Collection authorizers(WfResource wfResource)
172:                    throws RemoteException {
173:                List result = new ArrayList();
174:                if (!(wfResource instanceof  DefaultUserResource)) {
175:                    return result;
176:                }
177:                String userId = ((DefaultUserResource) wfResource).getId();
178:                Connection con = null;
179:                PreparedStatement ps = null;
180:                ResultSet rs = null;
181:                try {
182:                    con = ds().getConnection();
183:                    ps = con.prepareStatement(props.getProperty("rolesQuery"));
184:                    ps.setString(1, userId);
185:                    rs = ps.executeQuery();
186:                    while (rs.next()) {
187:                        result.add(new DefaultRoleResource(rasCtx, rs
188:                                .getString(1), rs.getString(2)));
189:
190:                    }
191:                    rs.close();
192:                    rs = null;
193:                    ps.close();
194:                    ps = null;
195:                    ps = con.prepareStatement(props.getProperty("groupsQuery"));
196:                    ps.setString(1, userId);
197:                    rs = ps.executeQuery();
198:                    while (rs.next()) {
199:                        result.add(new DefaultGroupResource(rasCtx, rs
200:                                .getString(1), rs.getString(2)));
201:
202:                    }
203:                } catch (SQLException e) {
204:                    throw new RemoteException(e.getMessage(), e);
205:                } finally {
206:                    try {
207:                        JDBCUtil.closeAll(rs, ps, con);
208:                    } catch (SQLException e) {
209:                        logger.warn(
210:                                "Cannot close (ignored): " + e.getMessage(), e);
211:                    }
212:                }
213:                return result;
214:            }
215:
216:            /* Comment copied from interface */
217:            public WfResource resourceByKey(String key)
218:                    throws ResourceNotFoundException, RemoteException {
219:                Connection con = null;
220:                PreparedStatement ps = null;
221:                ResultSet rs = null;
222:                try {
223:                    con = ds().getConnection();
224:                    if (DefaultUserResource.isValidKey(key)) {
225:                        String resId = DefaultUserResource.getId(key);
226:                        ps = con.prepareStatement(props
227:                                .getProperty("userNameQuery"));
228:                        ps.setString(1, resId);
229:                        rs = ps.executeQuery();
230:                        if (!rs.next()) {
231:                            throw new ResourceNotFoundException(
232:                                    "No user with id: " + resId);
233:                        }
234:                        return new DefaultUserResource(rasCtx, resId, rs
235:                                .getString(1));
236:                    } else if (DefaultGroupResource.isValidKey(key)) {
237:                        String resId = DefaultGroupResource.getId(key);
238:                        ps = con.prepareStatement(props
239:                                .getProperty("groupNameQuery"));
240:                        ps.setString(1, resId);
241:                        rs = ps.executeQuery();
242:                        if (!rs.next()) {
243:                            throw new ResourceNotFoundException(
244:                                    "No group with id: " + resId);
245:                        }
246:                        return new DefaultGroupResource(rasCtx, resId, rs
247:                                .getString(1));
248:                    } else if (DefaultRoleResource.isValidKey(key)) {
249:                        String resId = DefaultRoleResource.getId(key);
250:                        ps = con.prepareStatement(props
251:                                .getProperty("roleNameQuery"));
252:                        ps.setString(1, resId);
253:                        rs = ps.executeQuery();
254:                        if (!rs.next()) {
255:                            throw new ResourceNotFoundException(
256:                                    "No role with id: " + resId);
257:                        }
258:                        return new DefaultRoleResource(rasCtx, resId, rs
259:                                .getString(1));
260:                    } else {
261:                        throw new IllegalArgumentException(
262:                                "Resource with invalid key " + key);
263:                    }
264:                } catch (SQLException e) {
265:                    throw new RemoteException(e.getMessage(), e);
266:                } finally {
267:                    try {
268:                        JDBCUtil.closeAll(rs, ps, con);
269:                    } catch (SQLException e) {
270:                        logger.warn(
271:                                "Cannot close (ignored): " + e.getMessage(), e);
272:                    }
273:                }
274:            }
275:
276:            /* Comment copied from interface. */
277:            public Collection listResources() throws RemoteException {
278:                Connection con = null;
279:                try {
280:                    List result = new ArrayList();
281:                    con = ds().getConnection();
282:                    listResourceType(result, con, "allUsersQuery");
283:                    listResourceType(result, con, "allGroupsQuery");
284:                    listResourceType(result, con, "allRolesQuery");
285:                    return result;
286:                } catch (SQLException e) {
287:                    throw new RemoteException(e.getMessage(), e);
288:                } finally {
289:                    try {
290:                        JDBCUtil.closeAll(null, null, con);
291:                    } catch (SQLException e) {
292:                        logger.warn(
293:                                "Cannot close (ignored): " + e.getMessage(), e);
294:                    }
295:                }
296:            }
297:
298:            private void listResourceType(List result, Connection con,
299:                    String queryKey) throws RemoteException {
300:                PreparedStatement ps = null;
301:                ResultSet rs = null;
302:                try {
303:                    ps = con.prepareStatement(props.getProperty(queryKey));
304:                    rs = ps.executeQuery();
305:                    while (rs.next()) {
306:                        WfResource resource = null;
307:                        if (queryKey.equals("allUsersQuery")) {
308:                            resource = new DefaultUserResource(rasCtx, rs
309:                                    .getString(1), rs.getString(2));
310:                        } else if (queryKey.equals("allGroupsQuery")) {
311:                            resource = new DefaultGroupResource(rasCtx, rs
312:                                    .getString(1), rs.getString(2));
313:                        } else {
314:                            resource = new DefaultRoleResource(rasCtx, rs
315:                                    .getString(1), rs.getString(2));
316:                        }
317:                        result.add(resource);
318:                    }
319:                } catch (SQLException e) {
320:                    throw new RemoteException(e.getMessage(), e);
321:                } finally {
322:                    try {
323:                        JDBCUtil.closeAll(rs, ps, null);
324:                    } catch (SQLException e) {
325:                        logger.warn(
326:                                "Cannot close (ignored): " + e.getMessage(), e);
327:                    }
328:                }
329:            }
330:
331:            /**
332:             * The <code>resSel</code> parameter is evaluated if it is of type
333:             * <code>java.lang.String</code> only. It takes the
334:             * following format:
335:             * <dl>
336:             *   <dt><code>R:<i>role name</i></code></dt>
337:             *   <dd>Selects the role with the given name.</dd>
338:             *   <dt><code>G:<i>group name</i></code></dt>
339:             *   <dd>Selects the group with the given name.</dd>
340:             *   <dt><code>M:<i>member id</i></code></dt>
341:             *   <dd>Selects the member with the given id.</dd>
342:             * </dl>
343:             * 
344:             * @param resSel an object that describes resource selection criteria.
345:             * @return collection of <code>WfResource</code> objects.
346:             * @throws RemoteException if a system-level error occurs.
347:             * @throws UnsupportedOperationException if the resource management
348:             * service does not support this feature.
349:             */
350:            public Collection selectResources(Object resSel)
351:                    throws RemoteException, UnsupportedOperationException {
352:                Collection res = new ArrayList();
353:                if (resSel == null || !(resSel instanceof  String)) {
354:                    return res;
355:                }
356:                String crit = (String) resSel;
357:                String resType = crit.substring(0, 1);
358:                String resAccount = crit.substring(2);
359:
360:                Connection con = null;
361:                PreparedStatement ps = null;
362:                ResultSet rs = null;
363:                try {
364:                    con = ds().getConnection();
365:                    if (resType.equals("M")) {
366:                        ps = con.prepareStatement(props
367:                                .getProperty("userLookupQuery"));
368:                        ps.setString(1, resAccount);
369:                        rs = ps.executeQuery();
370:                        if (rs.next()) {
371:                            res.add(new DefaultUserResource(rasCtx, rs
372:                                    .getString(1), rs.getString(2)));
373:                        }
374:                    } else if (resType.equals("G")) {
375:                        ps = con.prepareStatement(props
376:                                .getProperty("groupLookupQuery"));
377:                        ps.setString(1, resAccount);
378:                        rs = ps.executeQuery();
379:                        if (rs.next()) {
380:                            res.add(new DefaultGroupResource(rasCtx, rs
381:                                    .getString(1), rs.getString(2)));
382:                        }
383:                    } else if (resType.equals("R")) {
384:                        ps = con.prepareStatement(props
385:                                .getProperty("roleLookupQuery"));
386:                        ps.setString(1, resAccount);
387:                        rs = ps.executeQuery();
388:                        if (rs.next()) {
389:                            res.add(new DefaultRoleResource(rasCtx, rs
390:                                    .getString(1), rs.getString(2)));
391:                        }
392:                    }
393:                } catch (SQLException e) {
394:                    throw new RemoteException(e.getMessage(), e);
395:                } finally {
396:                    try {
397:                        JDBCUtil.closeAll(rs, ps, con);
398:                    } catch (SQLException e) {
399:                        logger.warn(
400:                                "Cannot close (ignored): " + e.getMessage(), e);
401:                    }
402:                }
403:                return res;
404:            }
405:
406:        }
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