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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/DBConnection.java @ 979:2306340d7540

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Added schema for datacage db flys-artifacts/trunk@2406 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 26 Jul 2011 14:14:55 +0000
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rev   line source
979
2306340d7540 Added schema for datacage db
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1 package de.intevation.flys.artifacts.datacage;
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2
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3 import de.intevation.artifacts.common.utils.Config;
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4
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5 import java.sql.SQLException;
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6
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7 import javax.sql.DataSource;
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8
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9 import org.apache.commons.dbcp.BasicDataSource;
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10
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11 import org.apache.log4j.Logger;
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12
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13 public class DBConnection
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14 {
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15 private static Logger logger = Logger.getLogger(DBConnection.class);
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16
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17 /**
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18 * XPath to access the database driver within the global configuration.
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19 */
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20 public static final String DB_DRIVER =
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21 "/artifact-database/datacage/driver/text()";
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22 /**
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23 * XPath to access the database URL within the global configuration.
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24 */
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25 public static final String DB_URL =
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26 "/artifact-database/datacage/url/text()";
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27 /**
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28 * XPath to access the database use within the global configuration.
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29 */
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30 public static final String DB_USER =
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31 "/artifact-database/datacage/user/text()";
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32 /**
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33 * XPath to access the database password within the global configuration.
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34 */
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35 public static final String DB_PASSWORD =
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36 "/artifact-database/datacage/password/text()";
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37
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38 /**
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39 * The default database driver: H2
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40 */
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41 public static final String DEFAULT_DRIVER =
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42 "org.h2.Driver";
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43
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44 /**
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45 * The default database user: ""
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46 */
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47 public static final String DEFAULT_USER = "";
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48
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49 /**
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50 * The default database password: ""
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51 */
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52 public static final String DEFAULT_PASSWORD = "";
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53
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54
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55 public static final String DEFAULT_URL =
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56 "jdbc:h2:mem;INIT=RUNSCRIPT FROM '${artifacts.config.dir}/datacage.sql'";
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57
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58 private static BasicDataSource dataSource;
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59
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60 private DBConnection() {
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61 }
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62
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63 private static final void addShutdownHook() {
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64 Runtime.getRuntime().addShutdownHook(new Thread() {
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65 @Override
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66 public void run() {
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67 if (dataSource != null) {
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68 try {
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69 dataSource.close();
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70 }
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71 catch (SQLException sqle) {
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72 }
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73 dataSource = null;
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74 }
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75 }
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76 });
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77
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78 }
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79
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80 public static synchronized DataSource getDataSource() {
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81 if (dataSource == null) {
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82 dataSource = new BasicDataSource();
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83
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84 String driver = Config.getStringXPath(
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85 DB_DRIVER, DEFAULT_DRIVER);
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86
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87 String url = Config.getStringXPath(
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88 DB_URL, DEFAULT_URL);
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89
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90 url = Config.replaceConfigDir(url);
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91
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92 String user = Config.getStringXPath(
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93 DB_USER, DEFAULT_USER);
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94
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95 String password = Config.getStringXPath(
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96 DB_PASSWORD, DEFAULT_PASSWORD);
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97
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98 logger.info("database driver: " + driver);
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99 logger.info("database url: " + url);
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100
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101 dataSource.setDriverClassName(driver);
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102 dataSource.setUsername(user);
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103 dataSource.setPassword(password);
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104 dataSource.setUrl(url);
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105 addShutdownHook();
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106 }
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107
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108 return dataSource;
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109 }
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110 }
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111 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org