svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.jdbc / src / main / java / org / gvsig / fmap / dal / store / jdbc2 / spi / operations / AbstractConnectionOperation.java @ 44058
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1 | 43020 | jjdelcerro | package org.gvsig.fmap.dal.store.jdbc2.spi.operations; |
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2 | |||
3 | import java.sql.Connection; |
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4 | import java.sql.SQLException; |
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5 | 43377 | jjdelcerro | import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
6 | 43020 | jjdelcerro | import org.gvsig.fmap.dal.store.jdbc.exception.JDBCTransactionRollbackException; |
7 | import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper; |
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8 | import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase; |
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9 | import org.slf4j.Logger; |
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10 | import org.slf4j.LoggerFactory; |
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11 | |||
12 | public abstract class AbstractConnectionOperation implements ConnectionOperation { |
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13 | |||
14 | 44058 | jjdelcerro | final static protected Logger LOGGER = LoggerFactory.getLogger(AbstractConnectionOperation.class); |
15 | 43020 | jjdelcerro | |
16 | final protected JDBCHelper helper; |
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17 | 43114 | jjdelcerro | |
18 | 43377 | jjdelcerro | protected Connection conn = null; |
19 | 43020 | jjdelcerro | |
20 | public AbstractConnectionOperation(JDBCHelper helper) {
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21 | this.helper = helper;
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22 | } |
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23 | |||
24 | @Override
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25 | public boolean continueTransactionAllowed() { |
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26 | return false; |
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27 | } |
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28 | |||
29 | @Override
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30 | public boolean needTransaction() { |
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31 | return true; |
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32 | } |
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33 | |||
34 | protected JDBCSQLBuilderBase createSQLBuilder() {
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35 | return this.helper.createSQLBuilder(); |
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36 | } |
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37 | |||
38 | @Override
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39 | public Object perform() { |
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40 | try {
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41 | return this.perform_operation(); |
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42 | } catch (RuntimeException ex) { |
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43 | throw ex;
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44 | } catch (Exception ex) { |
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45 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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46 | } |
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47 | } |
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48 | |||
49 | 43377 | jjdelcerro | protected Connection getConnection() throws AccessResourceException { |
50 | if( this.conn == null ) { |
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51 | this.conn = this.helper.getConnection(); |
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52 | } |
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53 | 43114 | jjdelcerro | return this.conn; |
54 | } |
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55 | |||
56 | 43377 | jjdelcerro | protected Object perform_operation() throws Exception { |
57 | Object result = null; |
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58 | 44058 | jjdelcerro | LOGGER.debug("preparing execution of "+this.getClass().getSimpleName()+"."); |
59 | 43377 | jjdelcerro | if( needTransaction() ) {
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60 | try {
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61 | // XXX OJO esta condicion NO ES FIABLE
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62 | if (!this.getConnection().getAutoCommit()) { |
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63 | if (!continueTransactionAllowed()) {
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64 | throw new SQLException("nested operations not allowed."); |
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65 | } |
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66 | 43020 | jjdelcerro | } |
67 | 43377 | jjdelcerro | this.getConnection().setAutoCommit(false); |
68 | try {
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69 | 44058 | jjdelcerro | LOGGER.debug("Excuting operation {}.", this.getClass().getSimpleName()); |
70 | 43377 | jjdelcerro | result = perform(this.getConnection());
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71 | } catch (Exception ex) { |
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72 | try {
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73 | this.getConnection().rollback();
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74 | } catch (Exception e1) { |
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75 | throw new JDBCTransactionRollbackException(e1, ex); |
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76 | } |
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77 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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78 | } |
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79 | this.getConnection().commit();
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80 | } finally {
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81 | helper.closeConnection(this.getConnection());
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82 | conn = null;
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83 | 43020 | jjdelcerro | } |
84 | 43377 | jjdelcerro | } else {
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85 | 43020 | jjdelcerro | try {
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86 | 44058 | jjdelcerro | LOGGER.debug("Excuting operation {}.", this.getClass().getSimpleName()); |
87 | 43377 | jjdelcerro | result = perform(this.getConnection());
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88 | 43020 | jjdelcerro | } catch (Exception ex) { |
89 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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90 | 43377 | jjdelcerro | } finally {
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91 | helper.closeConnection(this.getConnection());
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92 | conn = null;
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93 | 43020 | jjdelcerro | } |
94 | } |
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95 | 43377 | jjdelcerro | return result;
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96 | 43020 | jjdelcerro | } |
97 | } |