edu.udo.cs.miningmart.operator
Class FeatureConstructionByRelation

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.FeatureConstructionByRelation

public class FeatureConstructionByRelation
extends SingleCSOperator

Version:

$Id: FeatureConstructionByRelation.java,v 1.7 2006/09/27 14:59:57 euler Exp $

Author:

Timm Euler

Field Summary

static java.lang.String	AGGREGATION_VALUEOF
static java.lang.String	PARAMETER_AGGREGATION
static java.lang.String	PARAMETER_FROMCONCEPT
static java.lang.String	PARAMETER_OUTPUT_ATTR
static java.lang.String	PARAMETER_RELATION
static java.lang.String	PARAMETER_TARGET_ATTR

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

suffixForIntermediateViews

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

generatedSQLDefinitions

Constructor Summary

FeatureConstructionByRelation()

Method Summary

java.lang.String	generateSQLDefinition(java.lang.String selectPart) Implementation of the abstract method from SingleCSOperator.
protected java.lang.String	getCondition() Creates the WHERE part of the view definition.
Concept	getInputConcept() This method overrides the super class method because the input concept is given by the ToConcept of the relation.
protected java.lang.String	getListOfColumnSets() Creates the FROM part of the view definition.
protected Relation	getMyRelation() Gets the relation.
java.lang.String	getTypeOfNewColumnSet() Must implement this method from ConceptOperator().
protected java.lang.String	handleExtraOutputFeature(Feature outF, Columnset csForOutputConcept) Overwrites the super class method so that the newly constructed Feature can be handled.
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.

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

generateColumnSetsForOp, generateSQLDefinition, getNewCSName, getTypeOfNewColumnSet

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

compileStatement, createMetadata, createMetadataForOneBA, createSingleColumnSet, createStatement, generateColumns, getNewCSName, getOutputConcept, getStringForSelection, setNewCSMultiStepBranch

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, load, 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_AGGREGATION

public static final java.lang.String PARAMETER_AGGREGATION

See Also:

Constant Field Values

PARAMETER_RELATION

public static final java.lang.String PARAMETER_RELATION

See Also:

Constant Field Values

PARAMETER_FROMCONCEPT

public static final java.lang.String PARAMETER_FROMCONCEPT

See Also:

Constant Field Values

PARAMETER_TARGET_ATTR

public static final java.lang.String PARAMETER_TARGET_ATTR

See Also:

Constant Field Values

PARAMETER_OUTPUT_ATTR

public static final java.lang.String PARAMETER_OUTPUT_ATTR

See Also:

Constant Field Values

AGGREGATION_VALUEOF

public static final java.lang.String AGGREGATION_VALUEOF

See Also:

Constant Field Values

Constructor Detail

FeatureConstructionByRelation

public FeatureConstructionByRelation()

Method Detail

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

handleExtraOutputFeature

protected java.lang.String handleExtraOutputFeature(Feature outF,
                                                    Columnset csForOutputConcept)
                                             throws M4CompilerError

Overwrites the super class method so that the newly constructed Feature can be handled.

Overrides:

handleExtraOutputFeature in class SingleCSOperator

Parameters:

outF - Feature to be dealt with

csForOutputConcept - Columnset that was created for the output concept

Returns:

a String with a column definition

Throws:

M4CompilerError

getMyRelation

protected Relation getMyRelation()
                          throws M4CompilerError

Gets the relation.

Returns:

Returns a Relation

Throws:

M4CompilerError

getCondition

protected java.lang.String getCondition()
                                 throws M4CompilerError

Creates the WHERE part of the view definition.

Throws:

M4CompilerError

getListOfColumnSets

protected java.lang.String getListOfColumnSets()
                                        throws M4CompilerError

Creates the FROM part of the view definition.

Throws:

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.

getInputConcept

public Concept getInputConcept()
                        throws M4CompilerError

This method overrides the super class method because the input concept is given by the ToConcept of the relation.

Overrides:

getInputConcept in class ConceptOperator

Throws:

M4CompilerError