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annotate gnv/src/main/java/de/intevation/gnv/action/sessionmodel/SessionModelFactory.java @ 36:ad381cc47217

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Format Code to max 80 Chars per Row gnv/trunk@172 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Fri, 02 Oct 2009 08:54:13 +0000
parents 4405f31bbc30
children 14eecfde4607
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1 /**
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2 *
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3 */
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4 package de.intevation.gnv.action.sessionmodel;
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5
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6 import javax.servlet.http.HttpServletRequest;
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7
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8 import org.apache.log4j.Logger;
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9
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10 /**
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11 * @author Tim Englich <tim.englich@intevation.de>
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12 *
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13 */
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14 public class SessionModelFactory {
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16 public final static String SESSION_MODEL_ID = "de.intevation.gnv.action.sessionmodel.SessionModel.ID";
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17 /**
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18 * the logger, used to log exceptions and additonaly information
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19 */
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20 private static Logger log = Logger.getLogger(SessionModelFactory.class);
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21
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22 /**
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23 * The singleton Instance of this Factory.
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24 */
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25 private static SessionModelFactory instance = null;
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26
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27 /**
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28 * Constructor
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29 */
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30 private SessionModelFactory() {
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31 super();
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32 }
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33
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34 /**
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35 * This Method provides an singleton Instance of this Class.
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36 *
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37 * @return an singleton Instance of this Class
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38 */
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39 public static SessionModelFactory getInstance() {
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40 if (instance == null) {
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41 instance = new SessionModelFactory();
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42 }
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43 return instance;
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44 }
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45
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46 /**
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47 * Getting the ArtifactDatabaseClient
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48 *
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49 * @return the ArtifactDatabaseClient
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50 */
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51 public SessionModel getSessionModel(HttpServletRequest request) {
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52 synchronized (this.getClass()) {
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53 SessionModel sm = null;
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54 if (request.getSession().getAttribute(SESSION_MODEL_ID) != null) {
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55 sm = (SessionModel) request.getSession().getAttribute(
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56 SESSION_MODEL_ID);
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57 ;
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58 } else {
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59 sm = new DefaultSessionModel();
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60 request.getSession().setAttribute(SESSION_MODEL_ID, sm);
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61 }
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62
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63 return sm;
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64 }
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65 }
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67 }
http://dive4elements.wald.intevation.org