edu.udo.cs.miningmart.operator
Class MultiRelationalFeatureConstruction

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.ConceptOperator
          edu.udo.cs.miningmart.operator.SingleCSOperator
              edu.udo.cs.miningmart.operator.MultiRelationalFeatureConstruction

public class MultiRelationalFeatureConstruction
extends SingleCSOperator

Version:

$Id: MultiRelationalFeatureConstruction.java,v 1.9 2006/09/27 14:59:57 euler Exp $

Author:

Timm Euler

Field Summary

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

suffixForIntermediateViews

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

generatedSQLDefinitions

Constructor Summary

MultiRelationalFeatureConstruction()

Method Summary

protected java.lang.String	generateColumns(Columnset csForOutputConcept) This method overrides the method in ConceptOperator.
java.lang.String	generateSQLDefinition(java.lang.String selectPart) Implementation of the abstract method from SingleCSOperator.
protected java.lang.String	getCondition() Gets the condition.
protected java.lang.String	getListOfColumnSets() Gets the listOfColumnSets.
protected Concept[]	getMyChainConcepts() Gets the myChainConcepts.
protected Relation[]	getMyRelations() Gets the myRelations.
protected Feature[]	getSelectedFeatures() Gets the selectedFeatures.
java.lang.String	getTypeOfNewColumnSet() Must implement this method from ConceptOperator().
void	load(Step st) Loads all parameters for this operator.
protected boolean	mustCopyFeature(java.lang.String nameOfFeature) This method is for operators that do not copy all Features of the input concept to the output concept.
protected void	setCondition(java.lang.String condition) Sets the condition.
protected void	setListOfColumnSets(java.lang.String listOfColumnSets) Sets the listOfColumnSets.
protected void	setNewCSMultiStepBranch(Columnset newCS, int index) MultiStepBranch information of all Concepts need to be merged.

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

generateColumnSetsForOp, generateSQLDefinition, getNewCSName, getTypeOfNewColumnSet, handleExtraOutputFeature

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

compileStatement, createMetadata, createMetadataForOneBA, createSingleColumnSet, createStatement, 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, getParameterObjectsOfAllLoops, getSingleParameter, getSingleParameter, getStep, giveWarningForChangedInputData, 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

Constructor Detail

MultiRelationalFeatureConstruction

public MultiRelationalFeatureConstruction()

Method Detail

getMyChainConcepts

protected Concept[] getMyChainConcepts()
                                throws M4CompilerError

Gets the myChainConcepts.

Returns:

Returns a Concept[]

Throws:

M4CompilerError

getMyRelations

protected Relation[] getMyRelations()
                             throws M4CompilerError

Gets the myRelations.

Returns:

Returns a Relation[]

Throws:

M4CompilerError

getSelectedFeatures

protected Feature[] getSelectedFeatures()
                                 throws M4CompilerError

Gets the selectedFeatures.

Returns:

Returns a Feature[]

Throws:

M4CompilerError

getCondition

protected java.lang.String getCondition()

Gets the condition.

Returns:

Returns a String

getListOfColumnSets

protected java.lang.String getListOfColumnSets()

Gets the listOfColumnSets.

Returns:

Returns a String

setCondition

protected void setCondition(java.lang.String condition)

Sets the condition.

Parameters:

condition - The condition to set

setListOfColumnSets

protected void setListOfColumnSets(java.lang.String listOfColumnSets)

Sets the listOfColumnSets.

Parameters:

listOfColumnSets - The listOfColumnSets to set

load

public void load(Step st)
          throws ParameterDeselectedError,
                 M4CompilerError

Description copied from class: ExecutableOperator

Loads all parameters for this operator.

Overrides:

load in class ExecutableOperator

Parameters:

st - This executable operator's step

Throws:

ParameterDeselectedError

M4CompilerError

getTypeOfNewColumnSet

public java.lang.String getTypeOfNewColumnSet()

Must implement this method from ConceptOperator().

Specified by:

getTypeOfNewColumnSet in class SingleCSOperator

Returns:

The type of the new Columnset, either "V" or "T".

See Also:

edu.udo.cs.miningmart.m4.core.operator.ConceptOperator#getTypeOfNewColumnSet

mustCopyFeature

protected boolean mustCopyFeature(java.lang.String nameOfFeature)

Description copied from class: ConceptOperator

This method is for operators that do not copy all Features of the input concept to the output concept.

Specified by:

mustCopyFeature in class ConceptOperator

Parameters:

nameOfFeature - Name of the feature in question.

Returns:

TRUE if this feature should be copied to the output concept, FALSE if not.

generateSQLDefinition

public java.lang.String generateSQLDefinition(java.lang.String selectPart)
                                       throws M4CompilerError

Implementation of the abstract method from SingleCSOperator.

Specified by:

generateSQLDefinition in class SingleCSOperator

Parameters:

selectPart - The SQL string between "SELECT" and "FROM" for the SQL definition to be returned.

Returns:

The SQL definition for the new ColumnSet.

Throws:

M4CompilerError

generateColumns

protected java.lang.String generateColumns(Columnset csForOutputConcept)
                                    throws M4CompilerError

This method overrides the method in ConceptOperator.

Overrides:

generateColumns in class ConceptOperator

Parameters:

csForOutputConcept - The ColumnSet for which Columns are to be produced.

Returns:

A String for the "SELECT"-part of the view definition for the given ColumnSet.

Throws:

M4CompilerError

See Also:

miningmart.operator.ConceptOperator#generateColumns(Columnset)

setNewCSMultiStepBranch

protected void setNewCSMultiStepBranch(Columnset newCS,
                                       int index)
                                throws M4CompilerError

MultiStepBranch information of all Concepts need to be merged. In order to reduce the risk of different permutations of entries, which might be problematic with the current implementation of the Unsegment operator, the MultiStepBranch-Strings of all Columnsets are sorted before merging them. Multiple occurences of the same attribute are not supported; after the first occurence of an attribute each further occurence is removed.

Overrides:

setNewCSMultiStepBranch in class ConceptOperator

Parameters:

newCS - the Columnset that is created by this operator

index - An index for MulipleCSOperators.

Throws:

M4CompilerError

See Also:

ConceptOperator.setNewCSMultiStepBranch(Columnset, int)