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 @ 45534
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1 | 45065 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2020 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 43020 | jjdelcerro | package org.gvsig.fmap.dal.store.jdbc2.spi.operations; |
25 | |||
26 | import java.sql.Connection; |
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27 | import java.sql.SQLException; |
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28 | 43377 | jjdelcerro | import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
29 | 43020 | jjdelcerro | import org.gvsig.fmap.dal.store.jdbc.exception.JDBCTransactionRollbackException; |
30 | import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper; |
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31 | import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase; |
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32 | import org.slf4j.Logger; |
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33 | import org.slf4j.LoggerFactory; |
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34 | |||
35 | 44191 | jjdelcerro | @SuppressWarnings("UseSpecificCatch") |
36 | 43020 | jjdelcerro | public abstract class AbstractConnectionOperation implements ConnectionOperation { |
37 | |||
38 | 44058 | jjdelcerro | final static protected Logger LOGGER = LoggerFactory.getLogger(AbstractConnectionOperation.class); |
39 | 43020 | jjdelcerro | |
40 | final protected JDBCHelper helper; |
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41 | 43114 | jjdelcerro | |
42 | 43377 | jjdelcerro | protected Connection conn = null; |
43 | 43020 | jjdelcerro | |
44 | public AbstractConnectionOperation(JDBCHelper helper) {
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45 | this.helper = helper;
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46 | } |
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47 | |||
48 | @Override
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49 | public boolean continueTransactionAllowed() { |
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50 | return false; |
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51 | } |
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52 | |||
53 | @Override
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54 | public boolean needTransaction() { |
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55 | return true; |
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56 | } |
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57 | |||
58 | protected JDBCSQLBuilderBase createSQLBuilder() {
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59 | return this.helper.createSQLBuilder(); |
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60 | } |
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61 | |||
62 | @Override
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63 | public Object perform() { |
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64 | try {
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65 | 44198 | jjdelcerro | if( this.helper.isThreadSafe() ) { |
66 | return this.perform_operation(); |
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67 | } |
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68 | synchronized(AbstractConnectionOperation.class) {
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69 | return this.perform_operation(); |
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70 | } |
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71 | 43020 | jjdelcerro | } catch (RuntimeException ex) { |
72 | throw ex;
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73 | } catch (Exception ex) { |
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74 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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75 | } |
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76 | } |
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77 | |||
78 | 43377 | jjdelcerro | protected Connection getConnection() throws AccessResourceException { |
79 | if( this.conn == null ) { |
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80 | this.conn = this.helper.getConnection(); |
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81 | } |
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82 | 43114 | jjdelcerro | return this.conn; |
83 | } |
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84 | |||
85 | 43377 | jjdelcerro | protected Object perform_operation() throws Exception { |
86 | Object result = null; |
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87 | 44750 | jjdelcerro | LOGGER.trace("preparing execution of "+this.getClass().getSimpleName()+"."); |
88 | 43377 | jjdelcerro | if( needTransaction() ) {
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89 | try {
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90 | 44191 | jjdelcerro | if( this.helper.allowNestedOperations() ) { |
91 | boolean commitOnFinish = true; |
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92 | if (!this.getConnection().getAutoCommit()) { |
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93 | // Casi seguro que es una operacion anidada, asi que no
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94 | // terminamos la transaccion.
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95 | commitOnFinish = false;
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96 | } |
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97 | this.getConnection().setAutoCommit(false); |
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98 | try {
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99 | 44750 | jjdelcerro | LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
100 | 44191 | jjdelcerro | result = perform(this.getConnection());
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101 | } catch (Exception ex) { |
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102 | try {
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103 | this.getConnection().rollback();
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104 | } catch (Exception e1) { |
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105 | throw new JDBCTransactionRollbackException(e1, ex); |
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106 | } |
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107 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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108 | 43377 | jjdelcerro | } |
109 | 44191 | jjdelcerro | if( commitOnFinish ) {
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110 | this.getConnection().commit();
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111 | this.getConnection().setAutoCommit(true); |
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112 | } |
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113 | } else {
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114 | if (!this.getConnection().getAutoCommit()) { |
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115 | // Casi seguro que es una transaccion anidada, si no
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116 | // esta permitido, petamos.
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117 | if (!continueTransactionAllowed()) {
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118 | throw new SQLException("nested operations not allowed."); |
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119 | } |
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120 | } |
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121 | this.getConnection().setAutoCommit(false); |
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122 | 43377 | jjdelcerro | try {
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123 | 44750 | jjdelcerro | LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
124 | 44191 | jjdelcerro | result = perform(this.getConnection());
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125 | } catch (Exception ex) { |
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126 | try {
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127 | this.getConnection().rollback();
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128 | } catch (Exception e1) { |
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129 | throw new JDBCTransactionRollbackException(e1, ex); |
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130 | } |
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131 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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132 | 43377 | jjdelcerro | } |
133 | 44191 | jjdelcerro | this.getConnection().commit();
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134 | 43377 | jjdelcerro | } |
135 | } finally {
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136 | 45437 | fdiaz | closeConnection(result); |
137 | 43020 | jjdelcerro | } |
138 | 43377 | jjdelcerro | } else {
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139 | 43020 | jjdelcerro | try {
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140 | 44750 | jjdelcerro | LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
141 | 43377 | jjdelcerro | result = perform(this.getConnection());
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142 | 43020 | jjdelcerro | } catch (Exception ex) { |
143 | throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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144 | 43377 | jjdelcerro | } finally {
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145 | 45437 | fdiaz | closeConnection(result); |
146 | 43020 | jjdelcerro | } |
147 | } |
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148 | 43377 | jjdelcerro | return result;
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149 | 43020 | jjdelcerro | } |
150 | 45437 | fdiaz | |
151 | /**
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152 | *
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153 | * @param result the result of the operation recently executed
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154 | * @throws Exception
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155 | */
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156 | protected void closeConnection(Object result) throws Exception { |
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157 | helper.closeConnection(this.getConnection());
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158 | conn = null;
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159 | } |
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160 | 43020 | jjdelcerro | } |