Mercurial > dive4elements > gnv-client

annotate gnv/src/main/java/de/intevation/gnv/action/sessionmodel/SessionModelFactory.java @ 699:af22fa5567a6

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Removed trailing whitespace. gnv/trunk@935 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sat, 17 Apr 2010 09:31:48 +0000
parents 254f062e334b
children 89ade245ca7a
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1 package de.intevation.gnv.action.sessionmodel;
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2
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3 import javax.servlet.http.HttpServletRequest;
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5 import org.apache.log4j.Logger;
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7 /**
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8 * Creates and restores <code>SessionModel</code> objects from <code>
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9 * HttpServletRequest</code>.
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10 *
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11 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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12 */
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13 public class SessionModelFactory {
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15 public final static String SESSION_MODEL_ID = "de.intevation.gnv.action.sessionmodel.SessionModel.ID";
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16 /**
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17 * the logger, used to log exceptions and additonaly information
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18 */
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19 private static Logger log = Logger.getLogger(SessionModelFactory.class);
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20
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21 /**
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22 * The singleton Instance of this Factory.
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23 */
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24 private static SessionModelFactory instance = null;
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25
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26 /**
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27 * Constructor
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28 */
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29 private SessionModelFactory() {
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30 super();
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31 }
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32
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33 /**
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34 * This Method provides an singleton Instance of this Class.
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35 *
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36 * @return an singleton Instance of this Class
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37 */
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38 public synchronized static SessionModelFactory getInstance() {
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39 if (instance == null) {
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40 instance = new SessionModelFactory();
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41 }
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42 return instance;
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43 }
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44
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45 /**
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46 * Getting the ArtifactDatabaseClient
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47 *
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48 * @return the ArtifactDatabaseClient
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49 */
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50 public SessionModel getSessionModel(HttpServletRequest request) {
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51 synchronized (request) {
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52 SessionModel sm = null;
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53 Object obj = request.getSession().getAttribute(SESSION_MODEL_ID);
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54 if (obj instanceof SessionModel) {
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55 sm = (SessionModel) obj;
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56 } else {
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57 sm = new DefaultSessionModel();
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58 request.getSession().setAttribute(SESSION_MODEL_ID, sm);
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59 }
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60
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61 return sm;
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62 }
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63 }
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64 }
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65 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org