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annotate src/main/java/org/monetdb/jdbc/MonetDataSource.java @ 973:32f246853ec4 default tip

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Optimisation, call connection.mapClobAsVarChar() and connection.mapBlobAsVarBinary() outside the for-loop, as it does not change.
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 10 Apr 2025 19:26:59 +0200 (3 hours ago)
parents d416e9b6b3d0
children
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1 /*
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2 * SPDX-License-Identifier: MPL-2.0
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3 *
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4 * This Source Code Form is subject to the terms of the Mozilla Public
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7 *
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8 * Copyright 2024, 2025 MonetDB Foundation;
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9 * Copyright August 2008 - 2023 MonetDB B.V.;
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10 * Copyright 1997 - July 2008 CWI.
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11 */
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12
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f523727db392 Moved Java classes from packages starting with nl.cwi.monetdb.* to package org.monetdb.*
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13 package org.monetdb.jdbc;
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14
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15 import java.io.PrintWriter;
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16 import java.sql.Connection;
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17 import java.sql.SQLException;
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18 import java.sql.SQLFeatureNotSupportedException;
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19 import javax.sql.DataSource;
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20 import java.util.Properties;
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22 /**
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23 *<pre>
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24 * A DataSource suitable for the MonetDB database.
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25 *
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26 * This DataSource allows retrieval of a Connection using the JNDI bean like
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27 * framework. A DataSource has numerous advantages over using the DriverManager
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28 * to retrieve a Connection object. Using the DataSource interface enables a
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29 * more transparent application where the location or database can be changed
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30 * without changing any application code.
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31 *
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32 * Additionally, pooled connections can be used when using a DataSource.
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33 *</pre>
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34 *
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35 * @author Fabian Groffen
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36 * @version 0.2
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37 */
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38 public final class MonetDataSource
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39 extends MonetWrapper
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40 implements DataSource
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41 {
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42 private String description;
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43 private int loginTimeout;
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44 private String user;
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45 // insecure, but how to do it better?
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46 private String password;
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47 private String url;
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48
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49 // the following properties are also standard:
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50 // private String dataSourceName;
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51 // private String networkProtocol;
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52 // private String serverName;
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53 // private String role;
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54
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55
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56 private final MonetDriver driver;
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57
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58 /**
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59 * Constructor of a MonetDataSource which uses default settings for a
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60 * connection. You probably want to change this setting using the
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61 * method setURL.
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62 */
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63 public MonetDataSource() {
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64 description = "MonetDB database";
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65 url = "jdbc:monetdb://localhost/";
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66
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67 driver = new MonetDriver();
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68 }
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70 /**
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71 * Attempts to establish a connection with the data source that this
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72 * DataSource object represents.
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73 *
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74 * @return a MonetConnection
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75 * @throws SQLException if connecting to the database fails
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76 */
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77 @Override
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78 public Connection getConnection() throws SQLException {
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79 return getConnection(user, password);
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80 }
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81
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82 /**
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83 * Attempts to establish a connection with the data source that this
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84 * DataSource object represents.
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85 *
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86 * @param username the username to use
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87 * @param password the password to use
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88 * @return a MonetConnection
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89 * @throws SQLException if connecting to the database fails
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90 */
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91 @Override
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92 public Connection getConnection(final String username, final String password)
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93 throws SQLException
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94 {
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95 if (loginTimeout > 0) {
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96 /// could enable Socket.setSoTimeout(int timeout) here...
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97 }
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98 final Properties props = new Properties();
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99 props.put("user", username);
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100 props.put("password", password);
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101
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102 return driver.connect(url, props);
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103 }
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104
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105
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106 /**
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107 * Gets the maximum time in seconds that this data source can wait while
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108 * attempting to connect to a database.
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109 *
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110 * @return login timeout default is 0 (infinite)
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111 */
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112 @Override
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113 public int getLoginTimeout() {
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114 return loginTimeout;
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115 }
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116
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117 /**
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118 * Sets the maximum time in seconds that this data source will wait while
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119 * attempting to connect to a database.
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120 *
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121 * @param seconds the number of seconds to wait before aborting the connect
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122 */
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123 @Override
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124 public void setLoginTimeout(final int seconds) {
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125 loginTimeout = seconds;
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126 }
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127
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128 /**
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129 * Retrieves the log writer for this DataSource object.
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130 *
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131 * @return null, since there is no log writer
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132 */
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133 @Override
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134 public PrintWriter getLogWriter() {
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135 return null;
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136 }
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137
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138 /**
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139 * Sets the log writer for this DataSource object to the given
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140 * java.io.PrintWriter object.
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141 *
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142 * @param out a PrintWriter - ignored
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143 */
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144 @Override
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145 public void setLogWriter(final PrintWriter out) {
0
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146 }
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147
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148 /**
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149 * Sets the password to use when connecting. There is no getter
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150 * for obvious reasons.
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151 *
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152 * @param password the password
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153 */
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154 public void setPassword(final String password) {
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155 this.password = password;
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156 }
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157
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158 /**
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159 * Gets the username
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160 *
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161 * @return the username
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162 */
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163 public String getUser() {
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164 return user;
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165 }
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166
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167 /**
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168 * Sets the username
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169 *
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170 * @param user the username
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171 */
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172 public void setUser(final String user) {
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173 this.user = user;
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174 }
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175
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176 /**
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177 * Gets the connection URL
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178 *
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179 * @return the connection URL
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180 */
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181 public String getURL() {
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182 return url;
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183 }
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184
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185 /**
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186 * Sets the connection URL
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187 *
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188 * @param url the connection URL
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189 */
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190 public void setDatabaseName(final String url) {
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191 this.url = url;
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192 }
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193
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194 /**
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195 * Gets the description
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196 *
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197 * @return the description
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198 */
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199 public String getDescription() {
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200 return description;
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201 }
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202
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203 /**
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204 * Sets the description
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205 *
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206 * @param description the description
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207 */
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208 public void setDescription(final String description) {
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209 this.description = description;
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210 }
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211
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212 /**
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213 * Return the parent Logger of all the Loggers used by this data
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214 * source. This should be the Logger farthest from the root Logger
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215 * that is still an ancestor of all of the Loggers used by this data
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216 * source. Configuring this Logger will affect all of the log
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217 * messages generated by the data source. In the worst case, this
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218 * may be the root Logger.
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219 *
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220 * @return the parent Logger for this data source
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221 * @throws SQLFeatureNotSupportedException if the data source does
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222 * not use java.util.logging
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223 */
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224 @Override
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225 public java.util.logging.Logger getParentLogger() throws SQLFeatureNotSupportedException {
262
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226 throw newSQLFeatureNotSupportedException("getParentLogger");
0
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227 }
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228 }