本文整理汇总了Java中weka.experiment.InstanceQuery.connectToDatabase方法的典型用法代码示例。如果您正苦于以下问题：Java InstanceQuery.connectToDatabase方法的具体用法？Java InstanceQuery.connectToDatabase怎么用？Java InstanceQuery.connectToDatabase使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类weka.experiment.InstanceQuery的用法示例。
在下文中一共展示了InstanceQuery.connectToDatabase方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: setInstancesFromDBQ
import weka.experiment.InstanceQuery; //导入方法依赖的package包/类
/**
* Loads instances from an SQL query the user provided with the
* SqlViewerDialog, then loads the instances in a background process. This is
* done in the IO thread, and an error message is popped up if the IO thread
* is busy.
*
* @param url the database URL
* @param user the user to connect as
* @param pw the password of the user
* @param query the query for retrieving instances from
* @param sparse whether to create sparse or non-sparse instances
*/
public void setInstancesFromDBQ(String url, String user,
String pw, String query,
boolean sparse) {
if (m_IOThread == null) {
try {
InstanceQuery InstQ = new InstanceQuery();
InstQ.setDatabaseURL(url);
InstQ.setUsername(user);
InstQ.setPassword(pw);
InstQ.setQuery(query);
InstQ.setSparseData(sparse);
// we have to disconnect, otherwise we can't change the DB!
if (InstQ.isConnected())
InstQ.disconnectFromDatabase();
InstQ.connectToDatabase();
try {
addUndoPoint();
} catch (Exception ignored) {}
setInstancesFromDB(InstQ);
} catch (Exception ex) {
JOptionPane.showMessageDialog(this,
"Problem connecting to database:\n"
+ ex.getMessage(),
"Load Instances",
JOptionPane.ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(this,
"Can't load at this time,\n"
+ "currently busy with other IO",
"Load Instances",
JOptionPane.WARNING_MESSAGE);
}
}
示例2: setInstancesFromDBQ
import weka.experiment.InstanceQuery; //导入方法依赖的package包/类
/**
* Loads instances from an SQL query the user provided with the
* SqlViewerDialog, then loads the instances in a background process. This is
* done in the IO thread, and an error message is popped up if the IO thread
* is busy.
* @param url the database URL
* @param user the user to connect as
* @param pw the password of the user
* @param query the query for retrieving instances from
*/
public void setInstancesFromDBQ(String url, String user,
String pw, String query) {
if (m_IOThread == null) {
try {
InstanceQuery InstQ = new InstanceQuery();
InstQ.setDatabaseURL(url);
InstQ.setUsername(user);
InstQ.setPassword(pw);
InstQ.setQuery(query);
// we have to disconnect, otherwise we can't change the DB!
if (InstQ.isConnected())
InstQ.disconnectFromDatabase();
InstQ.connectToDatabase();
try {
addUndoPoint();
} catch (Exception ignored) {}
setInstancesFromDB(InstQ);
} catch (Exception ex) {
JOptionPane.showMessageDialog(this,
Messages.getInstance().getString("PreprocessPanel_SetInstancesFromDBQ_JOptionPaneShowMessageDialog_Text_First")
+ ex.getMessage(),
Messages.getInstance().getString("PreprocessPanel_SetInstancesFromDBQ_JOptionPaneShowMessageDialog_Text_Second"),
JOptionPane.ERROR_MESSAGE);
}
} else {
JOptionPane.showMessageDialog(this,
Messages.getInstance().getString("PreprocessPanel_SetInstancesFromDBQ_JOptionPaneShowMessageDialog_Text_Third"),
Messages.getInstance().getString("PreprocessPanel_SetInstancesFromDBQ_JOptionPaneShowMessageDialog_Text_Fourth"),
JOptionPane.WARNING_MESSAGE);
}
}