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annotate artifact-database/src/main/java/de/intevation/artifactdatabase/DBConnection.java @ 57:cf9848c85755 0.2

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RELEASE 0.2: Summarized NEWS and Changes artifacts/trunk@338 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Hans Plum <hans.plum@intevation.de>
date Fri, 13 Nov 2009 18:37:51 +0000
parents 93edc04f3a10
children 0f48188a6e02
rev   line source
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1 package de.intevation.artifactdatabase;
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2
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3 import javax.sql.DataSource;
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5 import java.sql.SQLException;
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7 import org.apache.commons.dbcp.BasicDataSource;
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8
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9 import java.io.File;
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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 /**
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14 * @author Sascha L. Teichmann
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15 */
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16 public class DBConnection
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17 {
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18 private static Logger logger = Logger.getLogger(DBConnection.class);
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20 public static final String DB_DRIVER =
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21 "/artifact-database/database/driver/text()";
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22 public static final String DB_URL =
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23 "/artifact-database/database/url/text()";
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24 public static final String DB_USER =
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25 "/artifact-database/database/user/text()";
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26 public static final String DB_PASSWORD =
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27 "/artifact-database/database/password/text()";
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29 public static final String DEFAULT_DRIVER =
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30 "org.h2.Driver";
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32 public static final String DEFAULT_DATABASE_FILE =
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33 "artifacts.db";
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34
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35 public static final String DEFAULT_URL = getDefaultURL();
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37 public static final String DEFAULT_USER = "";
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38 public static final String DEFAULT_PASSWORD = "";
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40 private DBConnection() {
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41 }
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42
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43 public static final String getDefaultURL() {
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44 File configDir = Config.getConfigDirectory();
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45 File databaseFile = new File(configDir, DEFAULT_DATABASE_FILE);
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46 return "jdbc:h2:" + databaseFile;
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47 }
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48
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49 private static BasicDataSource dataSource;
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51 private static final void addShutdownHook() {
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52 Runtime.getRuntime().addShutdownHook(new Thread() {
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53 public void run() {
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54 if (dataSource != null) {
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55 try {
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56 dataSource.close();
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57 }
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58 catch (SQLException sqle) {
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59 }
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60 dataSource = null;
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61 }
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62 }
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63 });
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64 }
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66 public static synchronized DataSource getDataSource() {
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67 if (dataSource == null) {
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68 dataSource = new BasicDataSource();
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70 String driver = Config.getStringXPath(
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71 DB_DRIVER, DEFAULT_DRIVER);
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73 String url = Config.getStringXPath(
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74 DB_URL, DEFAULT_URL);
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76 String user = Config.getStringXPath(
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77 DB_USER, DEFAULT_USER);
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79 String password = Config.getStringXPath(
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80 DB_PASSWORD, DEFAULT_PASSWORD);
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81
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82 logger.info("database driver: " + driver);
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83 logger.info("database url: " + url);
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85 dataSource.setDriverClassName(driver);
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86 dataSource.setUsername(user);
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87 dataSource.setPassword(password);
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88 dataSource.setUrl(url);
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89 addShutdownHook();
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90 }
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92 return dataSource;
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93 }
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94 }
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95 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org