Mercurial > hg > monetdb-java

annotate src/main/java/nl/cwi/monetdb/jdbc/MonetDataSource.java @ 261:d4baf8a4b43a

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Update Copyright year to 2019
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 03 Jan 2019 14:43:44 +0100 (2019-01-03)
parents c38d4eaf5479
children 2d62ca1f758b
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1 /*
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2 * This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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5 *
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6 * Copyright 1997 - July 2008 CWI, August 2008 - 2019 MonetDB B.V.
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7 */
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8
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9 package nl.cwi.monetdb.jdbc;
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10
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11 import java.io.PrintWriter;
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12 import java.sql.Connection;
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13 import java.sql.SQLException;
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14 import java.sql.SQLFeatureNotSupportedException;
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15 import javax.sql.DataSource;
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16 import java.util.Properties;
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17 import java.util.logging.Logger;
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18
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19 /**
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20 * A DataSource suitable for the MonetDB database.
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21 *
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22 * This DataSource allows retrieval of a Connection using the JNDI bean like
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23 * framework. A DataSource has numerous advantages over using the DriverManager
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24 * to retrieve a Connection object. Using the DataSource interface enables a
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25 * more transparent application where the location or database can be changed
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26 * without changing any application code.
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27 *
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28 * Additionally, pooled connections can be used when using a DataSource.
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29 *
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30 * @author Fabian Groffen
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31 * @version 0.1
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32 */
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33 public class MonetDataSource extends MonetWrapper implements DataSource {
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34 private String description;
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35 private int loginTimeout = 0;
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36 private String user;
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37 // insecure, but how to do it better?
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38 private String password;
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39 private String url;
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40
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41 // the following properties are also standard:
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42 // private String dataSourceName;
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43 // private String networkProtocol;
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44 // private String serverName;
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45 // private String role;
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47
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48 private final MonetDriver driver;
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49
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50 /**
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51 * Constructor of a MonetDataSource which uses default settings for a
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52 * connection. You probably want to change this setting using the
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53 * method setURL.
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54 */
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55 public MonetDataSource() {
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56 description = "MonetDB database";
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57 url = "jdbc:monetdb://localhost/";
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58
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59 driver = new MonetDriver();
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60 }
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61
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62 /**
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63 * Attempts to establish a connection with the data source that this
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64 * DataSource object represents.
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65 *
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66 * @return a MonetConnection
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67 * @throws SQLException if connecting to the database fails
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68 */
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69 @Override
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70 public Connection getConnection() throws SQLException {
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71 return getConnection(user, password);
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72 }
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73
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74 /**
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75 * Attempts to establish a connection with the data source that this
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76 * DataSource object represents.
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77 *
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78 * @param username the username to use
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79 * @param password the password to use
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80 * @return a MonetConnection
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81 * @throws SQLException if connecting to the database fails
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82 */
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83 @Override
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84 public Connection getConnection(String username, String password)
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85 throws SQLException
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86 {
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87 if (loginTimeout > 0) {
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88 /// could enable Socket.setSoTimeout(int timeout) here...
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89 }
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90 Properties props = new Properties();
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91 props.put("user", username);
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92 props.put("password", password);
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93
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94 return driver.connect(url, props);
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95 }
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96
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97
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98 /**
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99 * Gets the maximum time in seconds that this data source can wait while
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100 * attempting to connect to a database.
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101 *
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102 * @return login timeout default is 0 (infinite)
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103 */
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104 @Override
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105 public int getLoginTimeout() {
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106 return loginTimeout;
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107 }
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108
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109 /**
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110 * Sets the maximum time in seconds that this data source will wait while
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111 * attempting to connect to a database.
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112 *
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113 * @param seconds the number of seconds to wait before aborting the connect
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114 */
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115 @Override
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116 public void setLoginTimeout(int seconds) {
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117 loginTimeout = seconds;
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118 }
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119
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120 /**
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121 * Retrieves the log writer for this DataSource object.
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122 *
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123 * @return null, since there is no log writer
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124 */
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125 @Override
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126 public PrintWriter getLogWriter() {
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127 return null;
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128 }
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129
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130 /**
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131 * Sets the log writer for this DataSource object to the given
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132 * java.io.PrintWriter object.
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133 *
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134 * @param out a PrintWriter - ignored
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135 */
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136 @Override
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137 public void setLogWriter(PrintWriter out) {
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138 }
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139
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140 /**
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141 * Sets the password to use when connecting. There is no getter
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142 * for obvious reasons.
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143 *
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144 * @param password the password
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145 */
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146 public void setPassword(String password) {
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147 this.password = password;
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148 }
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149
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150 /**
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151 * Gets the username
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152 *
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153 * @return the username
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154 */
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155 public String getUser() {
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156 return user;
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157 }
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158
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159 /**
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160 * Sets the username
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161 *
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162 * @param user the username
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163 */
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164 public void setUser(String user) {
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165 this.user = user;
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166 }
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167
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168 /**
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169 * Gets the connection URL
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170 *
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171 * @return the connection URL
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172 */
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173 public String getURL() {
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174 return url;
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175 }
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176
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177 /**
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178 * Sets the connection URL
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179 *
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180 * @param url the connection URL
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181 */
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182 public void setDatabaseName(String url) {
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183 this.url = url;
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184 }
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185
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186 /**
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187 * Gets the description
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188 *
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189 * @return the description
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190 */
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191 public String getDescription() {
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192 return description;
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193 }
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194
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195 /**
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196 * Sets the description
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197 *
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198 * @param description the description
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199 */
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200 public void setDescription(String description) {
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201 this.description = description;
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202 }
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203
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204 /**
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205 * Return the parent Logger of all the Loggers used by this data
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206 * source. This should be the Logger farthest from the root Logger
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207 * that is still an ancestor of all of the Loggers used by this data
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208 * source. Configuring this Logger will affect all of the log
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209 * messages generated by the data source. In the worst case, this
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210 * may be the root Logger.
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211 *
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212 * @return the parent Logger for this data source
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213 * @throws SQLFeatureNotSupportedException if the data source does
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214 * not use java.util.logging
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215 */
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216 @Override
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217 public Logger getParentLogger() throws SQLFeatureNotSupportedException {
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218 throw new SQLFeatureNotSupportedException("java.util.logging not in use", "0A000");
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219 }
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220 }