DatabaseConnection

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## weka.core.converters
Class DatabaseConnection

    java.lang.Object
      weka.experiment.DatabaseUtils
          weka.core.converters.DatabaseConnection

All Implemented Interfaces:
  java.io.Serializable, RevisionHandler

    public class DatabaseConnection

extends DatabaseUtils

Connects to a database.

Version:
  $Revision: 1.8 $
Author:
  Len Trigg (trigg@cs.waikato.ac.nz), Stefan Mutter (mutter@cs.waikato.ac.nz)
See Also:
  Serialized Form

Field Summary

Fields inherited from class weka.experiment.DatabaseUtils
`BOOL, BYTE, DATE, DOUBLE, EXP_INDEX_TABLE, EXP_RESULT_COL, EXP_RESULT_PREFIX, EXP_SETUP_COL, EXP_TYPE_COL, FLOAT, INTEGER, LONG, PROPERTY_FILE, SHORT, STRING, TEXT, TIME`

Constructor Summary
`DatabaseConnection()` Sets up the database drivers

Method Summary
`java.sql.DatabaseMetaData` | `getMetaData()` Gets meta data for the database connection object.
`java.lang.String` | `getRevision()` Returns the revision string.
`int` | `getUpdateCount()` Dewtermines if the current query retrieves a result set or updates a table
`boolean` | `getUpperCase()` Check if the property checkUpperCaseNames in the DatabaseUtils file is set to true or false.

Methods inherited from class weka.experiment.DatabaseUtils
`arrayToString, close, close, connectToDatabase, createExperimentIndex, createExperimentIndexEntry, createResultsTable, databaseURLTipText, debugTipText, disconnectFromDatabase, execute, experimentIndexExists, getDatabaseURL, getDebug, getPassword, getResultFromTable, getResultSet, getResultsTableName, getSupportedCursorScrollType, getUsername, isConnected, isCursorScrollable, isCursorScrollSensitive, passwordTipText, processKeyString, putResultInTable, select, setDatabaseURL, setDebug, setPassword, setUsername, tableExists, translateDBColumnType, typeName, update, usernameTipText`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DatabaseConnection

    public DatabaseConnection()
                       throws java.lang.Exception

  Sets up the database drivers

  Throws:
    `java.lang.Exception` - if an error occurs

Method Detail

### getUpperCase

    public boolean getUpperCase()

  Check if the property checkUpperCaseNames in the DatabaseUtils file is set to true or false.

  Returns:
    true if the property checkUpperCaseNames in the DatabaseUtils file is set to true, false otherwise.

### getMetaData

    public java.sql.DatabaseMetaData getMetaData()
                                          throws java.lang.Exception

  Gets meta data for the database connection object.

  Returns:
    the meta data.
  Throws:
    `java.lang.Exception` - if an error occurs

### getUpdateCount

    public int getUpdateCount()
                       throws java.sql.SQLException

  Dewtermines if the current query retrieves a result set or updates a table

  Returns:
    the update count (-1 if the query retrieves a result set).
  Throws:
    `java.sql.SQLException` - if an error occurs

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Overrides:
    `getRevision` in class `DatabaseUtils`
  Returns:
    the revision

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