Mercurial > dive4elements > gnv-client

annotate geo-backend/src/main/java/de/intevation/gnv/geobackend/base/connectionpool/ConnectionPoolFactory.java @ 887:b757def3ff55

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Bring @author javadoc tags in form '@author <a href="john.doe@example.com">John Doe</a>' geo-backend/trunk@859 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 29 Mar 2010 09:45:05 +0000
parents 8b442223741c
children ebeb56428409
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1 package de.intevation.gnv.geobackend.base.connectionpool;
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2
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3 import de.intevation.gnv.geobackend.sde.connectionpool.ArcSDEConnectionPool;
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5 import java.util.Properties;
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7 import org.apache.log4j.Logger;
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8
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9 /**
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10 * Factoryimplementation for the Interface ConnectionPool.
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11 * This factory delivers Instances of the Interface ConnectionPool.
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12 * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
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13 */
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14 public class ConnectionPoolFactory {
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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(ConnectionPoolFactory.class);
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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 ConnectionPoolFactory instance = null;
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26
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27 /**
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28 * The ConnectionPool providing the Connections to the DatabaseBackends
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29 */
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30 private ConnectionPool connectionPool = null;
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31
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32 /**
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33 * Basic-Constructor of this Class
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34 */
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35 private ConnectionPoolFactory() {
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36 super();
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37 }
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38
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39 /**
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40 * This Method provides an singleton Instance of this Class.
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41 * @return an singleton Instance of this Class
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42 */
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43 public static ConnectionPoolFactory getInstance(){
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44 if (instance == null){
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45 instance = new ConnectionPoolFactory();
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46 }
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47 return instance;
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48 }
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50 /**
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51 * Getting the ConnectionPool
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52 * @return the ConnectionPool
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53 */
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54 public ConnectionPool getConnectionPool(){
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55 return this.connectionPool;
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56 }
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57
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58 /**
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59 * Initializes the ConnectionPool.
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60 * Should only be called once on system startup
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61 * @param properties the Properties for the Individual Configuration of the ConnectionPool
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62 */
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63 public void initializeConnectionPool(Properties properties){
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64 log.debug("ConnectionPoolFactory.initializeConnectionPool");
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65 if (this.connectionPool == null){
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66 //TODO: Here it might be possible to switch the ConnectionPoolInstance using a FLAG.
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67 this.connectionPool = new ArcSDEConnectionPool();
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68 this.connectionPool.initialize(properties);
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69 }else{
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70 log.warn("ConnectionPool already initialized");
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71 }
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72 }
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73
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74 /**
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75 * Checks if the ConnectionPool has already been initialized.
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76 * @return true if the ConnectionPool is initialized.
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77 */
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78 public boolean isInitialized(){
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79 return this.connectionPool != null;
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80 }
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81 }
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