Source Code Cross Referenced for ProjectFactory.java in  » Database-ORM » Speedo_1.4.5 » org » objectweb » speedo » j2eedo » bo » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » Speedo_1.4.5 » org.objectweb.speedo.j2eedo.bo 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Speedo: an implementation of JDO compliant personality on top of JORM generic
003:         * I/O sub-system.
004:         * Copyright (C) 2001-2004 France Telecom R&D
005:         *
006:         * This library is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU Lesser General Public
008:         * License as published by the Free Software Foundation; either
009:         * version 2 of the License, or (at your option) any later version.
010:         *
011:         * This library 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 GNU
014:         * Lesser General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU Lesser General Public
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
019:         *
020:         *
021:         */
022:        package org.objectweb.speedo.j2eedo.bo;
023:
024:        import java.math.BigDecimal;
025:        import java.util.Collection;
026:        import java.util.Iterator;
027:
028:        import javax.jdo.JDOException;
029:        import javax.jdo.PersistenceManager;
030:        import javax.jdo.Query;
031:
032:        import org.objectweb.speedo.Alea;
033:        import org.objectweb.speedo.j2eedo.database.Department;
034:        import org.objectweb.speedo.j2eedo.database.Employee;
035:        import org.objectweb.speedo.j2eedo.database.Project;
036:        import org.objectweb.util.monolog.Monolog;
037:        import org.objectweb.util.monolog.api.BasicLevel;
038:        import org.objectweb.util.monolog.api.Logger;
039:        import org.objectweb.util.monolog.api.LoggerFactory;
040:
041:        /**
042:         * This class define the Java class to methods used to handle employee
043:         * @author fmillevi@yahoo.com
044:         */
045:        public class ProjectFactory {
046:            static Logger logger = null;
047:            /**
048:             * the constant <code>MIN_MEMBER_PER_PROJECT</code> defines
049:             * the minimum members number to be created per project
050:             */
051:            public static final int MIN_MEMBER_PER_PROJECT = 5;
052:            /**
053:             * the constant <code>MAX_MEMBER_PER_PROJECT</code> defines
054:             * the maximum members number to be created per project
055:             */
056:            public static final int MAX_MEMBER_PER_PROJECT = 20;
057:            static {
058:                LoggerFactory lf = Monolog.initialize();
059:                logger = lf.getLogger(DatabaseImpl.class.getName());
060:            }
061:
062:            /**
063:             * Gets some projects. 2 queries are defines
064:             * <ul><li>Get a project by it's primary key</li>
065:             * <li>Get projects having one of 2 selected employees</li></ul>
066:             * @throws JDOException
067:             * @throws Exception
068:             */
069:            public void getProjects(StringBuffer outStr, PersistenceManager pm) {
070:                int testId = Alea.rand(0, 1);
071:                switch (testId) {
072:                case 0:
073:                    queryProject(outStr, pm);
074:                    break;
075:                case 1:
076:                    queryProjectsByMembers(outStr, pm);
077:                    break;
078:                }
079:            }
080:
081:            private void queryProject(StringBuffer outStr, PersistenceManager pm) {
082:                long id = DatabaseImpl.getProjectIdFromPool();
083:                logger.log(BasicLevel.DEBUG, "Query project having id :" + id);
084:                Query query = pm.newQuery(Project.class);
085:                query.declareParameters("long aId");
086:                query.setFilter("(proid==aId)");
087:                Collection col = (Collection) query.execute(new Long(id));
088:                Iterator iter = col.iterator();
089:                Project p = null;
090:                try {
091:                    if (!iter.hasNext()) {
092:                        throw new RuntimeException(
093:                                "No project found with the id: " + id);
094:                    }
095:                    p = (Project) iter.next();
096:                    if (p.getProid() != id)
097:                        throw new RuntimeException(
098:                                "Bad project found (the id is different, expected: "
099:                                        + id + ", found:" + p.getProid());
100:                    if (iter.hasNext())
101:                        throw new RuntimeException(
102:                                "More than one project corresponding to the id: "
103:                                        + id);
104:                } finally {
105:                    query.closeAll();
106:                }
107:                outStr.append("\nGet project " + id);
108:                outStr.append(", name:").append(p.getName());
109:                outStr.append(", budget:").append(p.getBudget());
110:            }
111:
112:            private void queryProjectsByMembers(StringBuffer outStr,
113:                    PersistenceManager pm) {
114:                long id1 = DatabaseImpl.getEmployeeIdFromPool();
115:                long id2 = DatabaseImpl.getEmployeeIdFromPool();
116:                while (id2 == id1) {
117:                    id2 = DatabaseImpl.getEmployeeIdFromPool();
118:                }
119:                logger.log(BasicLevel.DEBUG, "Query project having members :"
120:                        + id1 + " and " + id2);
121:                outStr.append("\nThe project for the employee ");
122:                outStr.append(id1).append(" and ").append(id2);
123:
124:                Query query = pm.newQuery(Project.class);
125:                query.declareParameters("long id1, long id2");
126:                query
127:                        .declareVariables("org.objectweb.speedo.j2eedo.database.Employee e");
128:                query
129:                        .setFilter("((members.contains(e)) && ((e.empid==id1) || (e.empid==id2)) )");
130:
131:                Collection col = (Collection) query.execute(new Long(id1),
132:                        new Long(id2));
133:                Iterator iter = col.iterator();
134:                try {
135:                    while (iter.hasNext()) {
136:                        Project p = (Project) iter.next();
137:                        outStr.append(p.getAsString());
138:                    }
139:                } finally {
140:                    query.closeAll();
141:                }
142:
143:            }
144:
145:            /**
146:             * Gets a project
147:             * @throws JDOException
148:             * @throws Exception
149:             */
150:            public void getProject(StringBuffer outStr, PersistenceManager pm) {
151:                long id = DatabaseImpl.getProjectIdFromPool();
152:                logger.log(BasicLevel.DEBUG, "Get project having id :" + id);
153:                outStr.append("\nGet the project id :").append(id);
154:                Project p = (Project) pm.getObjectById(pm.newObjectIdInstance(
155:                        Project.class, Long.toString(id)), false);
156:                outStr.append(p.getAsString());
157:            }
158:
159:            /**
160:             * Deletes a project
161:             * @throws JDOException
162:             * @throws Exception
163:             */
164:            public void deleteProject(PollsSynchronizations pollsSync,
165:                    StringBuffer outStr, PersistenceManager pm) {
166:                long id = DatabaseImpl.getProjectIdFromPool();
167:                // remove id from static pool to avoid other threatment to use it
168:                pollsSync.removeFromPool(DatabaseImpl.poolOfProjectId, id);
169:                pm.setUserObject(pollsSync);
170:                logger.log(BasicLevel.DEBUG, "Delete project having id :" + id);
171:                outStr.append("\nRemove project :").append(id);
172:                pm.deletePersistent((Project) pm.getObjectById(pm
173:                        .newObjectIdInstance(Project.class, Long.toString(id)),
174:                        false));
175:            }
176:
177:            /**
178:             * Selects an existing project, creates a new project and duplicates member list to
179:             * the new project
180:             * @throws JDOException
181:             * @throws Exception
182:             */
183:            public void splitProject(PollsSynchronizations pollsSync,
184:                    StringBuffer outStr, PersistenceManager pm) {
185:                long id = DatabaseImpl.getProjectIdFromPool();
186:                logger.log(BasicLevel.DEBUG, "Split project having id :" + id);
187:                outStr.append("\nSplit project :").append(id);
188:                Project p = (Project) pm.getObjectById(pm.newObjectIdInstance(
189:                        Project.class, Long.toString(id)), false);
190:                Project newP = new Project(p.getName() + "-splited", p
191:                        .getDepartment());
192:                newP.setBudget(BigDecimal.valueOf(Alea.rand(1, 150000)));
193:                newP.setMembers(p.getMembers());
194:                pm.makePersistent(newP);
195:                outStr.append(", new project is: ").append(newP.getProid());
196:                pollsSync.addInPool(DatabaseImpl.poolOfProjectId, newP
197:                        .getProid());
198:                pm.setUserObject(pollsSync);
199:            }
200:
201:            /**
202:             * Selects an existing department, create a new project and affects some
203:             * existing employees
204:             * @throws JDOException
205:             * @throws Exception
206:             */
207:            public void newProjectWithEmployees(
208:                    PollsSynchronizations pollsSync, StringBuffer outStr,
209:                    PersistenceManager pm) {
210:                outStr.append("\nCreate new project with its members");
211:                Department d = (Department) pm.getObjectById(pm
212:                        .newObjectIdInstance(Department.class, Long
213:                                .toString(DatabaseImpl
214:                                        .getDepartmentIdFromPool())), false);
215:
216:                Project p = new Project("Name-" + Alea.randomstring(4, 5), d);
217:                p.setBudget(BigDecimal.valueOf(Alea.rand(1, 150000)));
218:                pm.makePersistent(p);
219:
220:                logger.log(BasicLevel.DEBUG, "Create a new project id :"
221:                        + p.getProid());
222:                outStr.append("\nAdd project : ").append(p.getProid());
223:                pollsSync.addInPool(DatabaseImpl.poolOfProjectId, p.getProid());
224:                pm.setUserObject(pollsSync);
225:
226:                int nbEmployees = Alea.rand(MIN_MEMBER_PER_PROJECT,
227:                        MAX_MEMBER_PER_PROJECT);
228:                Employee e = null;
229:                for (int i = 0; i < nbEmployees; i++) {
230:                    e = (Employee) pm.getObjectById(pm.newObjectIdInstance(
231:                            Employee.class, Long.toString(DatabaseImpl
232:                                    .getEmployeeIdFromPool())), false);
233:                    if (!p.addMember(e)) {
234:                        i--;
235:                    }
236:                }
237:                outStr.append(" with ").append(nbEmployees).append(" members");
238:            }
239:        }
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