edu.udo.cs.miningmart.operator
Class Binarify

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.FeatureConstruction
          edu.udo.cs.miningmart.operator.Binarify

public class Binarify

extends FeatureConstruction

This operator creates new binary attributes that realise a boolean flag indicating for each value of the target attribute whether it occurs in that row/entity.

Version:

$Id: Binarify.java,v 1.4 2006/04/11 14:10:12 euler Exp $

Author:

Timm Euler

Field Summary

static java.lang.String	PARAMETER_TARGETATTR
static java.lang.String	PARAMETER_VALUES

Constructor Summary

Binarify()

Method Summary

java.lang.String	generateSQL(Column targetAttributeColumn) Abstract method to be implemented by all subclasses.
BaseAttribute	getTheTargetAttribute(int loopNr) All FeatureConstruction operators have a target attribute which is different from loop to loop.

Methods inherited from class edu.udo.cs.miningmart.operator.FeatureConstruction

compileStatement, createStatement, estimateStatistics, execute, generateColumnForOp, getCurrentLoopNumber, getTheInputConcept, getTheOutputAttribute, getTheOutputAttribute, getTheTargetAttribute, load, writeResults

Methods inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator

autoPrint, checkConditions, doPrint, doPrint, executeBusinessSingleValueSqlRead, executeBusinessSingleValueSqlReadL, executeBusinessSqlRead, executeBusinessSqlWrite, executeM4SingleValueSqlRead, executeM4SingleValueSqlReadL, executeM4SqlRead, executeM4SqlWrite, getArtificalColumnName, getBusinessDbms, getHighestLoopNr, getM4Db, getM4Dbms, getM4ObjectFromCache, getName, getNextM4SequenceValue, getNumberOfLoops, getOperator, getOpParamsIterator, getParameter, getParameter, getSingleParameter, getSingleParameter, getStep, handleAssertions, isDeselectedParameter, isLoopable, isManual, isStepable, print, putM4ObjectToCache, showCreateStatement, storedProceduresAvailable

Methods inherited from class java.lang.Object

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

Field Detail

PARAMETER_VALUES

public static final java.lang.String PARAMETER_VALUES

See Also:

Constant Field Values

PARAMETER_TARGETATTR

public static final java.lang.String PARAMETER_TARGETATTR

See Also:

Constant Field Values

Constructor Detail

Binarify

public Binarify()

Method Detail

generateSQL

public java.lang.String generateSQL(Column targetAttributeColumn)
                             throws M4CompilerError

Description copied from class: FeatureConstruction

Abstract method to be implemented by all subclasses. In this method the SQL definition for the Column which this operator creates is created.

Specified by:

generateSQL in class FeatureConstruction

Parameters:

targetAttributeColumn - The Column to which this FeatureConstruction Operator is applied. Some subclasses may ignore this parameter.

Returns:

An SQL definition for the newly constructed Column.

Throws:

M4CompilerError - A simple exception object with an error message.

getTheTargetAttribute

public BaseAttribute getTheTargetAttribute(int loopNr)
                                    throws M4CompilerError

All FeatureConstruction operators have a target attribute which is different from loop to loop. Only this operator, Binarify, has got the same target attribute in all loops. So the super class method is overwritten.

Overrides:

getTheTargetAttribute in class FeatureConstruction

Parameters:

loopNr - the number of the loop for which the target attribute is wanted

Returns:

the target attribute for this operator

Throws:

M4CompilerError