edu.udo.cs.miningmart.operator
Class SegmentationByPartitioning

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.ConceptOperator
          edu.udo.cs.miningmart.operator.MultipleCSOperator
              edu.udo.cs.miningmart.operator.Segmentation
                  edu.udo.cs.miningmart.operator.SegmentationByPartitioning

public final class SegmentationByPartitioning

extends Segmentation

This operator segments an input concept randomly.

Version:

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

Author:

Martin Scholz

See Also:

edu.udo.cs.miningmart.m4.core.operator.Segmentation

Field Summary

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

generatedSQLDefinitions

Constructor Summary

SegmentationByPartitioning()

Method Summary

java.lang.String	generateConditionForOp(int columnSetIndex) Only for the java compiler.
java.lang.String	generateSQLDefinition(java.lang.String selectPart, int index) Overrides the method from Segmentation.java because a nested view definition is needed.
Value	getHowManyPartitions() Getter method for parameter "HowManyPartitions".
java.lang.String	getSourceAttributeDefinitions()
java.lang.String	getSourceAttributes()
java.lang.String	getTypeOfNewColumnSet(int index) This method must return the entry String for the M4 table "Columnset_t", indicating whether the new Columnset is a view or a table.
int	numberOfSegments() Abstract method to be implemented by all Segmentation operators.
void	setCSSegmentInfo(java.lang.String inputMultiStepBranch, Columnset cs, int index) Abstract method to be implemented by all Segmentation operators.

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

mustCopyFeature, numberOfColumnSets, setNewCSMultiStepBranch

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

generateColumnSetsForOp

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

compileStatement, createMetadata, createMetadataForOneBA, createSingleColumnSet, createStatement, estimateStatistics, generateColumns, getInputConcept, getNewCSName, getOutputConcept, getStringForSelection

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

autoPrint, checkConditions, doPrint, doPrint, execute, 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, load, print, putM4ObjectToCache, showCreateStatement, storedProceduresAvailable

Methods inherited from class java.lang.Object

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

Constructor Detail

SegmentationByPartitioning

public SegmentationByPartitioning()

Method Detail

generateSQLDefinition

public java.lang.String generateSQLDefinition(java.lang.String selectPart,
                                              int index)
                                       throws M4CompilerError

Overrides the method from Segmentation.java because a nested view definition is needed.

Overrides:

generateSQLDefinition in class Segmentation

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.operator.ConceptOperator#generateSQLDefinition(String, int)

getSourceAttributeDefinitions

public java.lang.String getSourceAttributeDefinitions()
                                               throws M4CompilerError

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.utils.RandomPartition#getSourceAttributeDefinitions()

getSourceAttributes

public java.lang.String getSourceAttributes()
                                     throws M4CompilerError

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.utils.RandomPartition#getSourceAttributes()

getTypeOfNewColumnSet

public java.lang.String getTypeOfNewColumnSet(int index)

Description copied from class: ConceptOperator

This method must return the entry String for the M4 table "Columnset_t", indicating whether the new Columnset is a view or a table. Use the constants in the class Columnset, either CS_TYPE_TABLE or CS_TYPE_VIEW.

Overrides:

getTypeOfNewColumnSet in class Segmentation

See Also:

edu.udo.cs.miningmart.m4.core.operator.ConceptOperator#getTypeOfNewColumnSet(int)

generateConditionForOp

public java.lang.String generateConditionForOp(int columnSetIndex)
                                        throws M4CompilerError

Only for the java compiler.

Specified by:

generateConditionForOp in class Segmentation

Parameters:

columnSetIndex - The number of the columnset for which the condition is to be generated

Returns:

the SQL condition as a String

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.operator.Segmentation#generateConditionForOp(int)

getHowManyPartitions

public Value getHowManyPartitions()
                           throws M4CompilerError

Getter method for parameter "HowManyPartitions".

Returns:

the parameter "HowManyPartitions" as a Value

Throws:

M4CompilerError

numberOfSegments

public int numberOfSegments()
                     throws M4CompilerError

Description copied from class: Segmentation

Abstract method to be implemented by all Segmentation operators. The number of segments that will be created is returned.

Specified by:

numberOfSegments in class Segmentation

Returns:

the number of segments that will be created

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.operator.Segmentation#numberOfSegments

setCSSegmentInfo

public void setCSSegmentInfo(java.lang.String inputMultiStepBranch,
                             Columnset cs,
                             int index)
                      throws M4CompilerError

Description copied from class: Segmentation

Abstract method to be implemented by all Segmentation operators. The multistep information about how the segmentation was done is set into the newly created columnset.

Specified by:

setCSSegmentInfo in class Segmentation

Parameters:

inputMultiStepBranch - the multistep information of the input columnset

cs - the current output columnset

index - the index of the output columnset

Throws:

M4CompilerError

See Also:

edu.udo.cs.miningmart.m4.core.operator.Segmentation#setCSSegmentInfo(String, Columnset, int)