edu.udo.cs.miningmart.storedProcedures
Class WMF

java.lang.Object
  edu.udo.cs.miningmart.storedProcedures.WMF

public class WMF
extends java.lang.Object

Version:

$Id: WMF.java,v 1.5 2006/09/27 15:00:02 euler Exp $

Author:

Martin Scholz

Field Summary

static int	AVERAGE
static int	MEDIAN
static int	MODAL

Constructor Summary

WMF(BusinessDbConnectionSource dbc, java.lang.String source, java.lang.String time, java.lang.String column, java.lang.String target, java.lang.String timeStartOut, java.lang.String timeEndOut, java.lang.String columnOut, double[] weights, int distance, int method)
Constructor

Method Summary

void	calc() Method calc() reads from the column(s) specified in the constructor and writes to the specified target, using windowing
static void	dbWMA(java.lang.Object dbc, java.lang.String source, java.lang.String time, java.lang.String column, java.lang.String target, java.lang.String timeStartOut, java.lang.String timeEndOut, java.lang.String columnOut, java.lang.String weights, int distance) This function has to be used in the database as a stored procedure for calculating an WMF.
protected edu.udo.cs.miningmart.storedProcedures.OutputColumnset	getOutputColumnset()
protected Windowing	getWindow()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

AVERAGE

public static final int AVERAGE

See Also:

Constant Field Values

MODAL

public static final int MODAL

See Also:

Constant Field Values

MEDIAN

public static final int MEDIAN

See Also:

Constant Field Values

Constructor Detail

WMF

public WMF(BusinessDbConnectionSource dbc,
           java.lang.String source,
           java.lang.String time,
           java.lang.String column,
           java.lang.String target,
           java.lang.String timeStartOut,
           java.lang.String timeEndOut,
           java.lang.String columnOut,
           double[] weights,
           int distance,
           int method)
    throws java.sql.SQLException,
           TimeOperatorException

Constructor

Parameters:

dbc - source of database connection if not used as stored procedure

source - source table

time - time column of source table

column - value column of source table

target - name of the target table to be created

timeStartOut - name of the interval start attribute for the output table

timeEndOut - name of the interval end attribute for the output table

columnOut - name of the output value attribute

weights - a vector of weights, also specifies the window size

distance - step size for windowing

method - - 0: AVERAGE, 1: MODAL, 2: MEDIAN

Throws:

java.sql.SQLException

TimeOperatorException

Method Detail

getWindow

protected Windowing getWindow()

getOutputColumnset

protected edu.udo.cs.miningmart.storedProcedures.OutputColumnset getOutputColumnset()

calc

public void calc()
          throws TimeOperatorException

Method calc() reads from the column(s) specified in the constructor and writes to the specified target, using windowing.

Throws:

TimeOperatorException

dbWMA

public static void dbWMA(java.lang.Object dbc,
                         java.lang.String source,
                         java.lang.String time,
                         java.lang.String column,
                         java.lang.String target,
                         java.lang.String timeStartOut,
                         java.lang.String timeEndOut,
                         java.lang.String columnOut,
                         java.lang.String weights,
                         int distance)
                  throws java.sql.SQLException,
                         TimeOperatorException

This function has to be used in the database as a stored procedure for calculating an WMF.

Throws:

java.sql.SQLException

TimeOperatorException