Mercurial > dive4elements > framework
annotate artifact-database/src/main/java/de/intevation/artifactdatabase/SQLExecutor.java @ 255:efbad8c5c0e5
Improved the ClientProtocolUtils - new function to create a document that is used to set the attribute of a CollectionItem.
artifacts/trunk@1753 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Thu, 28 Apr 2011 08:10:03 +0000 |
parents | 25d472a67a9f |
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1 /* |
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2 * Copyright (c) 2011 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 package de.intevation.artifactdatabase; |
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9 |
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10 import java.sql.Connection; |
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11 import java.sql.PreparedStatement; |
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12 import java.sql.ResultSet; |
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13 import java.sql.SQLException; |
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14 |
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15 import javax.sql.DataSource; |
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16 |
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17 import org.apache.log4j.Logger; |
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18 |
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19 public class SQLExecutor { |
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20 |
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21 private static Logger logger = Logger.getLogger(SQLExecutor.class); |
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22 |
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23 public Connection conn; |
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24 public PreparedStatement stmnt; |
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25 public ResultSet result; |
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26 |
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27 public SQLExecutor() { |
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28 } |
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29 |
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30 public void reset() throws SQLException { |
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31 if (result != null) { |
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32 result.close(); |
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33 result = null; |
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34 } |
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35 if (stmnt != null) { |
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36 result = null; |
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37 stmnt.close(); |
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38 } |
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39 } |
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40 |
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41 public PreparedStatement prepareStatement(String query) |
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42 throws SQLException { |
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43 return stmnt = conn.prepareStatement(query); |
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44 } |
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45 |
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46 public void close() { |
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47 if (result != null) { |
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48 try { result.close(); } |
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49 catch (SQLException sqle) {} |
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50 } |
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51 if (stmnt != null) { |
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52 try { stmnt.close(); } |
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53 catch (SQLException sqle) {} |
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54 } |
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55 if (conn != null) { |
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56 try { conn.close(); } |
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57 catch (SQLException sqle) {} |
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58 } |
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59 } |
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60 |
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61 public boolean runWrite() { |
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62 DataSource dataSource = DBConnection.getDataSource(); |
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63 try { |
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64 conn = dataSource.getConnection(); |
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65 try { |
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66 conn.setAutoCommit(false); |
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67 return doIt(); |
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68 } |
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69 catch (SQLException sqle) { |
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70 conn.rollback(); |
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71 throw sqle; |
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72 } |
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73 } |
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74 catch (SQLException sqle) { |
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75 logger.error(sqle.getLocalizedMessage(), sqle); |
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76 } |
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77 finally { |
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78 close(); |
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79 } |
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80 return false; |
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81 } |
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82 |
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83 public boolean runRead() { |
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84 DataSource dataSource = DBConnection.getDataSource(); |
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85 try { |
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86 conn = dataSource.getConnection(); |
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87 return doIt(); |
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88 } |
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89 catch (SQLException sqle) { |
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90 logger.error(sqle.getLocalizedMessage(), sqle); |
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91 } |
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92 finally { |
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93 close(); |
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94 } |
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95 return false; |
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96 } |
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97 |
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98 public boolean doIt() throws SQLException { |
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99 return true; |
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100 } |
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101 } |
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102 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |