Mercurial > dive4elements > river

annotate flys-aft/src/main/java/de/intevation/db/ConnectionBuilder.java @ 4077:97de7a552b79

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Load DIPS XML flys-aft/trunk@3452 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 16 Dec 2011 16:21:59 +0000
parents 100c4e0a45e1
children ee0c60757a94
rev   line source
4072
88f801888d85 load configuration an setup db connections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.db;
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2
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3 import de.intevation.utils.XML;
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4
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5 import java.util.HashMap;
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6
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7 import org.w3c.dom.Document;
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8
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9 import javax.xml.xpath.XPathConstants;
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10
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11 import java.sql.Connection;
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12 import java.sql.SQLException;
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13 import java.sql.DriverManager;
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14
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15 import org.apache.log4j.Logger;
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16
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17 public class ConnectionBuilder
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18 {
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19 private static Logger log = Logger.getLogger(ConnectionBuilder.class);
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20
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21 public static final String XPATH_DRIVER = "/sync/side[@name=$type]/db/driver/text()";
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22 public static final String XPATH_USER = "/sync/side[@name=$type]/db/user/text()";
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23 public static final String XPATH_PASSWORD = "/sync/side[@name=$type]/db/password/text()";
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24 public static final String XPATH_URL = "/sync/side[@name=$type]/db/url/text()";
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25
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26 protected String type;
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27 protected String driver;
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28 protected String user;
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29 protected String password;
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30 protected String url;
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31
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32 public ConnectionBuilder(String type, Document document) {
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33 this.type = type;
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34 extractCredentials(document);
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35 }
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36
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37 protected void extractCredentials(Document document) {
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38 HashMap<String, String> map = new HashMap<String, String>();
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39 map.put("type", type);
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40
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41 driver = (String)XML.xpath(
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42 document, XPATH_DRIVER, XPathConstants.STRING, null, map);
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43 user = (String)XML.xpath(
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44 document, XPATH_USER, XPathConstants.STRING, null, map);
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45 password = (String)XML.xpath(
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46 document, XPATH_PASSWORD, XPathConstants.STRING, null, map);
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47 url = (String)XML.xpath(
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48 document, XPATH_URL, XPathConstants.STRING, null, map);
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49
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50 if (log.isDebugEnabled()) {
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51 log.debug("driver: " + driver);
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52 log.debug("user: " + user);
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53 log.debug("password: *******");
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54 log.debug("url: " + url);
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55 }
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56 }
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57
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58 public Connection getConnection() throws SQLException {
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59
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60 if (driver != null && driver.length() > 0) {
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61 try {
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62 Class.forName(driver);
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63 }
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64 catch (ClassNotFoundException cnfe) {
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65 throw new SQLException(cnfe);
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66 }
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67 }
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68
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69 return DriverManager.getConnection(url, user, password);
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70 }
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71
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72 public ConnectedStatements getConnectedStatements() throws SQLException {
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73 return new ConnectedStatements(
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74 getConnection(),
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75 new Statements(type, driver != null ? driver : "")
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76 .getStatements());
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77 }
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78 }
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79 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org