Package weka.experiment

Interface InstanceQueryAdapter

All Known Implementing Classes:
InstanceQuery
public interface InstanceQueryAdapter
An interface implemented by InstanceQuery and any user class that is to be passed as the first argument to InstanceQuery.retrieveInstances(InstanceQueryAdapter, ResultSet).
Version:
$Revision: 8034 $
Author:
Wes Munsil (wes_munsil@cytoanalytics.com)

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    attributeCaseFix(String columnName)
    returns key column headings in their original case.
    boolean
    getDebug()
    Gets whether there should be printed some debugging output to stderr or not.
    boolean
    getSparseData()
    Gets whether data is to be returned as a set of sparse instances
    int
    translateDBColumnType(String type)
    translates the column data type string to an integer value that indicates which data type / get()-Method to use in order to retrieve values from the database (see DatabaseUtils.Properties, InstanceQuery()).

  • Method Details

    • attributeCaseFix

      String attributeCaseFix(String columnName)
      returns key column headings in their original case. Used for those databases that create uppercase column names.
      Parameters:
      columnName - the column to retrieve the original case for
      Returns:
      the original case

    • getDebug

      boolean getDebug()
      Gets whether there should be printed some debugging output to stderr or not.
      Returns:
      true if output should be printed

    • getSparseData

      boolean getSparseData()
      Gets whether data is to be returned as a set of sparse instances
      Returns:
      true if data is to be encoded as sparse instances

    • translateDBColumnType

      int translateDBColumnType(String type)
      translates the column data type string to an integer value that indicates which data type / get()-Method to use in order to retrieve values from the database (see DatabaseUtils.Properties, InstanceQuery()). Blanks in the type are replaced with underscores "_", since Java property names can't contain blanks.
      Parameters:
      type - the column type as retrieved with java.sql.MetaData.getColumnTypeName(int)
      Returns:
      an integer value that indicates which data type / get()-Method to use in order to retrieve values from the