Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/utils/DBCPConnectionProvider.java @ 5844:4dd33b86dc61

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Added header to river backend.
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 26 Apr 2013 08:25:41 +0200
parents 5aa05a7a34b7
children 4c3ccf2b0304
rev   line source
5844
4dd33b86dc61 Added header to river backend.
Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 /*
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10 * Copyright 2004 The Apache Software Foundation.
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11 *
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12 * Licensed under the Apache License, Version 2.0 (the "License");
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13 * you may not use this file except in compliance with the License.
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14 * You may obtain a copy of the License at
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15 *
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16 * http://www.apache.org/licenses/LICENSE-2.0
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17 *
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18 * Unless required by applicable law or agreed to in writing, software
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19 * distributed under the License is distributed on an "AS IS" BASIS,
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20 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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21 * See the License for the specific language governing permissions and
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22 * limitations under the License.
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23 */
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24 package org.dive4elements.river.utils;
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25
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26 import java.sql.Connection;
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27 import java.sql.SQLException;
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28
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29 import java.util.Iterator;
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30 import java.util.Properties;
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31 import java.util.Map;
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32 import java.util.Collections;
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33 import java.util.StringTokenizer;
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34
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35 import org.apache.commons.dbcp.BasicDataSource;
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36 import org.apache.commons.dbcp.BasicDataSourceFactory;
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37
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38 import org.apache.log4j.Logger;
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39
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40 import org.hibernate.HibernateException;
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41
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42 import org.hibernate.connection.ConnectionProviderFactory;
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43 import org.hibernate.connection.ConnectionProvider;
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44
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45 import org.hibernate.cfg.Environment;
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46
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47 /**
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48 * <p>A connection provider that uses an Apache commons DBCP connection pool.</p>
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49 *
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50 * <p>To use this connection provider set:<br>
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51 * <code>hibernate.connection.provider_class&nbsp;org.hibernate.connection.DBCPConnectionProvider</code></p>
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52 *
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53 * <pre>Supported Hibernate properties:
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54 * hibernate.connection.driver_class
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55 * hibernate.connection.url
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56 * hibernate.connection.username
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57 * hibernate.connection.password
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58 * hibernate.connection.isolation
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59 * hibernate.connection.autocommit
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60 * hibernate.connection.pool_size
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61 * hibernate.connection (JDBC driver properties)</pre>
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62 * <br>
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63 * All DBCP properties are also supported by using the hibernate.dbcp prefix.
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64 * A complete list can be found on the DBCP configuration page:
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65 * <a href="http://jakarta.apache.org/commons/dbcp/configuration.html">http://jakarta.apache.org/commons/dbcp/configuration.html</a>.
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66 * <br>
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67 * <pre>Example:
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68 * hibernate.connection.provider_class org.hibernate.connection.DBCPConnectionProvider
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69 * hibernate.connection.driver_class org.hsqldb.jdbcDriver
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70 * hibernate.connection.username sa
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71 * hibernate.connection.password
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72 * hibernate.connection.url jdbc:hsqldb:test
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73 * hibernate.connection.pool_size 20
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74 * hibernate.dbcp.initialSize 10
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75 * hibernate.dbcp.maxWait 3000
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76 * hibernate.dbcp.validationQuery select 1 from dual</pre>
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77 *
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78 * <p>More information about configuring/using DBCP can be found on the
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79 * <a href="http://jakarta.apache.org/commons/dbcp/">DBCP website</a>.
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80 * There you will also find the DBCP wiki, mailing lists, issue tracking
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81 * and other support facilities</p>
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82 *
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83 * @see org.hibernate.connection.ConnectionProvider
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84 * @author Dirk Verbeeck
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85 */
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86 public class DBCPConnectionProvider
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87 implements ConnectionProvider
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88 {
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89 private static Logger log = Logger.getLogger(DBCPConnectionProvider.class);
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90
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91 private static final String PREFIX = "hibernate.dbcp.";
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92
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93 private BasicDataSource ds;
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94
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95 // Old Environment property for backward-compatibility
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96 // (property removed in Hibernate3)
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97 private static final String DBCP_PS_MAXACTIVE =
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98 "hibernate.dbcp.ps.maxActive";
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99
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100 // Property doesn't exists in Hibernate2
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101 private static final String AUTOCOMMIT =
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102 "hibernate.connection.autocommit";
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103
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104 public void configure(Properties props) throws HibernateException {
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105 try {
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106 log.debug("Configure DBCPConnectionProvider");
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107
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108 // DBCP properties used to create the BasicDataSource
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109 Properties dbcpProperties = new Properties();
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110
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111 // DriverClass & url
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112 String jdbcDriverClass = props.getProperty(Environment.DRIVER);
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113 String jdbcUrl = props.getProperty(Environment.URL);
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114 dbcpProperties.put("driverClassName", jdbcDriverClass);
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115 dbcpProperties.put("url", jdbcUrl);
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116
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117 // Username / password
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118 String username = props.getProperty(Environment.USER);
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119 String password = props.getProperty(Environment.PASS);
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120 dbcpProperties.put("username", username);
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121 dbcpProperties.put("password", password);
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122
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123 // Isolation level
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124 String isolationLevel = props.getProperty(Environment.ISOLATION);
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125 if (isolationLevel != null
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126 && (isolationLevel = isolationLevel.trim()).length() > 0) {
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127 dbcpProperties.put("defaultTransactionIsolation", isolationLevel);
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128 }
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129
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130 // Turn off autocommit (unless autocommit property is set)
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diff changeset
131 String autocommit = props.getProperty(AUTOCOMMIT);
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132 if (autocommit != null
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133 && (autocommit = autocommit.trim()).length() > 0) {
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134 dbcpProperties.put("defaultAutoCommit", autocommit);
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135 } else {
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136 dbcpProperties.put("defaultAutoCommit", String.valueOf(Boolean.FALSE));
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137 }
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138
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139 // Pool size
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140 String poolSize = props.getProperty(Environment.POOL_SIZE);
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141 if (poolSize != null
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142 && (poolSize = poolSize.trim()).length() > 0
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143 && Integer.parseInt(poolSize) > 0) {
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144 dbcpProperties.put("maxActive", poolSize);
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145 }
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146
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147 // Copy all "driver" properties into "connectionProperties"
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148 Properties driverProps =
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149 ConnectionProviderFactory.getConnectionProperties(props);
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150
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151 if (driverProps.size() > 0) {
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152 StringBuilder connectionProperties = new StringBuilder();
464
d37ccb04ab5d Removed trailing whitespace.
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diff changeset
153 for (Iterator iter = driverProps.entrySet().iterator();
168
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154 iter.hasNext();
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155 ) {
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156 Map.Entry entry = (Map.Entry)iter.next();
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157 String key = (String)entry.getKey();
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158 String value = (String)entry.getValue();
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159 connectionProperties
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160 .append(key)
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161 .append('=')
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162 .append(value);
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163 if (iter.hasNext()) {
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164 connectionProperties.append(';');
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165 }
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166 }
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167 dbcpProperties.put(
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168 "connectionProperties", connectionProperties.toString());
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169 }
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170
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171 // Copy all DBCP properties removing the prefix
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diff changeset
172 for (Iterator iter = props.entrySet().iterator() ; iter.hasNext() ;) {
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diff changeset
173 Map.Entry entry = (Map.Entry)iter.next();
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174 String key = (String)entry.getKey();
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diff changeset
175 if (key.startsWith(PREFIX)) {
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diff changeset
176 String property = key.substring(PREFIX.length());
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177 String value = (String)entry.getValue();
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178 dbcpProperties.put(property, value);
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179 }
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180 }
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181
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182 // Backward-compatibility
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diff changeset
183 if (props.getProperty(DBCP_PS_MAXACTIVE) != null) {
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parents:
diff changeset
184 dbcpProperties.put(
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185 "poolPreparedStatements",
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diff changeset
186 String.valueOf(Boolean.TRUE));
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187 dbcpProperties.put(
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188 "maxOpenPreparedStatements",
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diff changeset
189 props.getProperty(DBCP_PS_MAXACTIVE));
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190 }
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191
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diff changeset
192 // Some debug info
181
4d9984411b3f Commented out a debug block because it leaks the db password.
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parents: 168
diff changeset
193 /* // commented out, because it leaks the password
168
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diff changeset
194 if (log.isDebugEnabled()) {
86a1bd9cc50e More Hibernate/JPA stuff
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parents:
diff changeset
195 log.debug("Creating a DBCP BasicDataSource" +
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parents:
diff changeset
196 " with the following DBCP factory properties:");
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diff changeset
197 StringWriter sw = new StringWriter();
86a1bd9cc50e More Hibernate/JPA stuff
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diff changeset
198 dbcpProperties.list(new PrintWriter(sw, true));
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diff changeset
199 log.debug(sw.toString());
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diff changeset
200 }
181
4d9984411b3f Commented out a debug block because it leaks the db password.
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parents: 168
diff changeset
201 */
168
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diff changeset
202
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203 // Let the factory create the pool
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diff changeset
204 ds = (BasicDataSource)BasicDataSourceFactory
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diff changeset
205 .createDataSource(dbcpProperties);
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diff changeset
206
5200
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
207 // This needs to be done manually as it is somehow ignored
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Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
208 // by the BasicDataSourceFactory if you set it as a dbcpProperty
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
209 String connectionInitSqls = props.getProperty("connectionInitSqls");
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
210 if (connectionInitSqls != null) {
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
211 StringTokenizer tokenizer = new StringTokenizer(connectionInitSqls, ";");
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
Andre Heinecke <aheinecke@intevation.de>
parents: 5193
diff changeset
212 ds.setConnectionInitSqls(Collections.list(tokenizer));
42bb6ff78d1b Directly set the connectionInitSqls on the datasource
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parents: 5193
diff changeset
213 }
168
86a1bd9cc50e More Hibernate/JPA stuff
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diff changeset
214 // The BasicDataSource has lazy initialization
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diff changeset
215 // borrowing a connection will start the DataSource
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parents:
diff changeset
216 // and make sure it is configured correctly.
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diff changeset
217
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218 // Connection conn = ds.getConnection();
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parents:
diff changeset
219 // conn.close();
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diff changeset
220 }
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diff changeset
221 catch (Exception e) {
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parents:
diff changeset
222 String message = "Could not create a DBCP pool";
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parents:
diff changeset
223 log.fatal(message, e);
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diff changeset
224 if (ds != null) {
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diff changeset
225 BasicDataSource x = ds; ds = null;
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diff changeset
226 try {
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diff changeset
227 x.close();
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diff changeset
228 }
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diff changeset
229 catch (SQLException sqle) {
86a1bd9cc50e More Hibernate/JPA stuff
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diff changeset
230 }
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231 }
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232 throw new HibernateException(message, e);
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233 }
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diff changeset
234 log.debug("Configure DBCPConnectionProvider complete");
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235 }
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236
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237 public Connection getConnection() throws SQLException {
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238 return ds.getConnection();
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239 }
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240
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241 public void closeConnection(Connection conn) throws SQLException {
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242 conn.close();
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243 }
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244
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245 public void close() throws HibernateException {
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diff changeset
246 try {
86a1bd9cc50e More Hibernate/JPA stuff
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diff changeset
247 if (ds != null) {
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248 BasicDataSource x = ds; ds = null;
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249 x.close();
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250 }
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251 }
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252 catch (SQLException sqle) {
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diff changeset
253 throw new HibernateException("Could not close DBCP pool", sqle);
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254 }
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255 }
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256
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257 public boolean supportsAggressiveRelease() {
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diff changeset
258 return false;
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259 }
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260 }
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261 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org