Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/SQL.java @ 47:4ae4dc99127d
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author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Thu, 01 Oct 2009 09:04:17 +0000 |
parents | 5a6b6a3debc7 |
children | 8447467cef86 |
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1 package de.intevation.artifactdatabase; |
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2 |
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3 import java.util.Properties; |
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4 |
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5 import java.io.IOException; |
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6 import java.io.InputStream; |
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7 |
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8 import org.apache.log4j.Logger; |
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9 |
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10 /** |
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11 * @author Sascha L. Teichmann |
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12 */ |
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13 public final class SQL |
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14 { |
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15 private static Logger logger = Logger.getLogger(SQL.class); |
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16 |
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17 private SQL() { |
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18 } |
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19 |
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20 private static Properties statements; |
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21 |
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22 public static final synchronized Properties getStatements() { |
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23 if (statements == null) { |
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24 statements = loadStatements(); |
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25 } |
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26 return statements; |
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27 } |
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28 |
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29 private static final Properties loadStatements() { |
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30 String driver = Config.getStringXPath( |
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31 DBConnection.DB_DRIVER, DBConnection.DEFAULT_DRIVER); |
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32 |
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33 Properties properties = new Properties(); |
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34 |
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35 InputStream in = null; |
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36 try { |
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37 String res = "/sql/" + driver.replace('.', '-').toLowerCase() |
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38 + ".properties"; |
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39 in = SQL.class.getResourceAsStream(res); |
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40 |
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41 if (in == null) { |
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42 logger.warn("No SQL file for driver '" + driver + "' found."); |
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43 res = "/sql/" + DBConnection.DEFAULT_DRIVER.replace('.', '-').toLowerCase() |
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44 + ".properties"; |
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45 if ((in = SQL.class.getResourceAsStream(res)) == null) { |
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46 logger.error("No SQL file found"); |
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47 } |
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48 } |
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49 |
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50 properties.load(in); |
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51 } |
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52 catch (IOException ioe) { |
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53 logger.error(ioe.getLocalizedMessage(), ioe); |
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54 } |
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55 finally { |
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56 if (in != null) { |
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57 try { in.close(); } catch (IOException ioe) {} |
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58 } |
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59 } |
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60 |
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61 return properties; |
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62 } |
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63 |
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64 public static final String get(String key) { |
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65 return getStatements().getProperty(key); |
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66 } |
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67 } |
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68 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |