Mercurial > hg > monetdb-java
annotate src/main/java/nl/cwi/monetdb/jdbc/MonetDataSource.java @ 0:a5a898f6886c
Copy of MonetDB java directory changeset e6e32756ad31.
author | Sjoerd Mullender <sjoerd@acm.org> |
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date | Wed, 21 Sep 2016 09:34:48 +0200 (2016-09-21) |
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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 - 2016 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.sql.*; |
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12 import javax.sql.*; |
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13 import java.util.*; |
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14 import java.io.*; |
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15 import java.util.logging.Logger; |
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16 |
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17 /** |
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18 * A DataSource suitable for the MonetDB database. |
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19 * |
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20 * This DataSource allows retrieval of a Connection using the JNDI bean like |
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21 * framework. A DataSource has numerous advantages over using the DriverManager |
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22 * to retrieve a Connection object. Using the DataSource interface enables a |
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23 * more transparent application where the location or database can be changed |
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24 * without changing any application code. |
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25 * |
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26 * Additionally, pooled connections can be used when using a DataSource. |
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27 * |
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28 * @author Fabian Groffen |
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29 * @version 0.1 |
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30 */ |
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31 public class MonetDataSource extends MonetWrapper implements DataSource { |
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32 private String description; |
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33 private int loginTimeout = 0; |
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34 private String user; |
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35 // insecure, but how to do it better? |
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36 private String password; |
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37 private String url; |
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38 |
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39 // the following properties are also standard: |
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40 // private String dataSourceName; |
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41 // private String networkProtocol; |
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42 // private String serverName; |
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43 // private String role; |
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44 |
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45 |
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46 private final MonetDriver driver; |
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47 |
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48 /** |
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49 * Constructor of a MonetDataSource which uses default settings for a |
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50 * connection. You probably want to change this setting using the |
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51 * method setURL. |
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52 */ |
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53 public MonetDataSource() { |
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54 description = "MonetDB database"; |
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55 url = "jdbc:monetdb://localhost/"; |
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56 |
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57 driver = new MonetDriver(); |
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58 } |
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59 |
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60 /** |
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61 * Attempts to establish a connection with the data source that this |
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62 * DataSource object represents. |
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63 * |
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64 * @return a MonetConnection |
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65 * @throws SQLException if connecting to the database fails |
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66 */ |
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67 @Override |
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68 public Connection getConnection() throws SQLException { |
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69 return getConnection(user, password); |
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70 } |
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71 |
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72 /** |
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73 * Attempts to establish a connection with the data source that this |
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74 * DataSource object represents. |
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75 * |
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76 * @param username the username to use |
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77 * @param password the password to use |
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78 * @return a MonetConnection |
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79 * @throws SQLException if connecting to the database fails |
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80 */ |
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81 @Override |
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82 public Connection getConnection(String username, String password) |
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83 throws SQLException |
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84 { |
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85 if (loginTimeout > 0) { |
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86 /// could enable Socket.setSoTimeout(int timeout) here... |
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87 } |
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88 Properties props = new Properties(); |
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89 props.put("user", username); |
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90 props.put("password", password); |
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91 |
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92 return driver.connect(url, props); |
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93 } |
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94 |
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95 |
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96 /** |
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97 * Gets the maximum time in seconds that this data source can wait while |
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98 * attempting to connect to a database. |
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99 * |
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100 * @return login timeout default is 0 (infinite) |
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101 */ |
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102 @Override |
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103 public int getLoginTimeout() { |
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104 return loginTimeout; |
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105 } |
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106 |
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107 /** |
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108 * Sets the maximum time in seconds that this data source will wait while |
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109 * attempting to connect to a database. |
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110 * |
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111 * @param seconds the number of seconds to wait before aborting the connect |
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112 */ |
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113 @Override |
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114 public void setLoginTimeout(int seconds) { |
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115 loginTimeout = seconds; |
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116 } |
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117 |
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118 /** |
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119 * Retrieves the log writer for this DataSource object. |
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120 * |
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121 * @return null, since there is no log writer |
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122 */ |
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123 @Override |
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124 public PrintWriter getLogWriter() { |
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125 return null; |
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126 } |
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127 |
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128 /** |
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129 * Sets the log writer for this DataSource object to the given |
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130 * java.io.PrintWriter object. |
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131 * |
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132 * @param out a PrintWriter - ignored |
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133 */ |
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134 @Override |
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135 public void setLogWriter(PrintWriter out) { |
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136 } |
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137 |
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138 /** |
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139 * Sets the password to use when connecting. There is no getter |
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140 * for obvious reasons. |
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141 * |
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142 * @param password the password |
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143 */ |
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144 public void setPassword(String password) { |
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145 this.password = password; |
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146 } |
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147 |
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148 /** |
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149 * Gets the username |
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150 * |
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151 * @return the username |
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152 */ |
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153 public String getUser() { |
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154 return user; |
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155 } |
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156 |
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157 /** |
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158 * Sets the username |
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159 * |
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160 * @param user the username |
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161 */ |
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162 public void setUser(String user) { |
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163 this.user = user; |
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164 } |
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165 |
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166 /** |
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167 * Gets the connection URL |
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168 * |
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169 * @return the connection URL |
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170 */ |
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171 public String getURL() { |
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172 return url; |
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173 } |
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174 |
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175 /** |
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176 * Sets the connection URL |
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177 * |
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178 * @param url the connection URL |
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179 */ |
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180 public void setDatabaseName(String url) { |
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181 this.url = url; |
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182 } |
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183 |
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184 /** |
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185 * Gets the description |
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186 * |
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187 * @return the description |
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188 */ |
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189 public String getDescription() { |
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190 return description; |
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191 } |
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192 |
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193 /** |
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194 * Sets the description |
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195 * |
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196 * @param description the description |
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197 */ |
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198 public void setDescription(String description) { |
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199 this.description = description; |
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200 } |
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201 |
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202 /** |
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203 * Return the parent Logger of all the Loggers used by this data |
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204 * source. This should be the Logger farthest from the root Logger |
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205 * that is still an ancestor of all of the Loggers used by this data |
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206 * source. Configuring this Logger will affect all of the log |
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207 * messages generated by the data source. In the worst case, this |
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208 * may be the root Logger. |
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209 * |
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210 * @return the parent Logger for this data source |
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211 * @throws SQLFeatureNotSupportedException if the data source does |
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212 * not use java.util.logging |
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213 */ |
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214 @Override |
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215 public Logger getParentLogger() throws SQLFeatureNotSupportedException { |
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216 throw new SQLFeatureNotSupportedException("java.util.logging not in use", "0A000"); |
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217 } |
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218 } |