edu.udo.cs.miningmart.operator
Class SingleCSOperator

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

Direct Known Subclasses:

Apriori, AttributeDerivation, CreatePrimaryKey, FeatureConstructionByRelation, FeatureConstructionWithTFIDF, FeatureSelection, JoinByKey, Materialize, ModelApplier, MultiRelationalFeatureConstruction, Pivotize, RemoveDuplicates, ReversePivotize, RowSelection, SpecifiedStatistics, TimeOperator, Union, UnionByKey, Windowing

public abstract class SingleCSOperator
extends ConceptOperator

This abstract class is the superclass for all operators that create a single ColumnSet for the output concept.

Version:

$Id: SingleCSOperator.java,v 1.6 2006/09/27 14:59:55 euler Exp $

Author:

Timm Euler

See Also:

edu.udo.cs.miningmart.m4.core.operator.MultipleCSOperator, edu.udo.cs.miningmart.m4.core.operator.ConceptOperator

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

SingleCSOperator()

Method Summary

Columnset[]	generateColumnSetsForOp(boolean lazy) Abstract method to be implemented by subclasses.
abstract java.lang.String	generateSQLDefinition(java.lang.String selectPart) This method must return the SQL definition of the newly created ColumnSet.
java.lang.String	generateSQLDefinition(java.lang.String selectPart, int index) This method must return the SQL definition of the newly created ColumnSet.
java.lang.String	getNewCSName() For a SingleConcept operator the index is always -1, so this method can be defined without an argument.
abstract java.lang.String	getTypeOfNewColumnSet() This method must return the entry String for the M4 table "Columnset_t", indicating whether the new Columnset is a view or a table.
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.
protected java.lang.String	handleExtraOutputFeature(Feature outputFeature, Columnset csForOuputConcept) The standard handling of extra output features is printing out a warning.

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

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

Constructor Detail

SingleCSOperator

public SingleCSOperator()

Method Detail

generateColumnSetsForOp

public Columnset[] generateColumnSetsForOp(boolean lazy)
                                    throws M4CompilerError,
                                           M4CompilerWarning

Description copied from class: ConceptOperator

Abstract method to be implemented by subclasses.

Specified by:

generateColumnSetsForOp in class ConceptOperator

Returns:

An array of ColumnSet objects

Throws:

M4CompilerError

M4CompilerWarning

See Also:

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

generateSQLDefinition

public java.lang.String generateSQLDefinition(java.lang.String selectPart,
                                              int index)
                                       throws M4CompilerError,
                                              M4CompilerWarning

Description copied from class: ConceptOperator

This method must return the SQL definition of the newly created ColumnSet.

Specified by:

generateSQLDefinition in class ConceptOperator

Parameters:

selectPart - The String for the SELECT-part of the SQL definition to be created.

index - An index for MultipleCSOperators.

Returns:

The SQL definition for the new ColumnSet.

Throws:

M4CompilerError

M4CompilerWarning

See Also:

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

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.

Specified by:

getTypeOfNewColumnSet in class ConceptOperator

Parameters:

index - An index for MulipleCSOperators.

Returns:

The type of the new Columnset, either Columnset.CS_TYPE_TABLE or Columnset.CS_TYPE_VIEW.

See Also:

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

handleExtraOutputFeature

protected java.lang.String handleExtraOutputFeature(Feature outputFeature,
                                                    Columnset csForOuputConcept)
                                             throws M4CompilerError

The standard handling of extra output features is printing out a warning. Subclasses may overwrite this method.

Specified by:

handleExtraOutputFeature in class ConceptOperator

Parameters:

outputFeature - Feature to be dealt with

csForOuputConcept - Columnset that was created for the output concept

Returns:

a String with a column definition

Throws:

M4CompilerError

getNewCSName

public java.lang.String getNewCSName()
                              throws M4CompilerError

For a SingleConcept operator the index is always -1, so this method can be defined without an argument.

Throws:

M4CompilerError

See Also:

ConceptOperator.getNewCSName(int)

getTypeOfNewColumnSet

public abstract java.lang.String getTypeOfNewColumnSet()

This method must return the entry String for the M4 table "Columnset_t", indicating whether the new Columnset is a view or a table.

Returns:

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

See Also:

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

generateSQLDefinition

public abstract java.lang.String generateSQLDefinition(java.lang.String selectPart)
                                                throws M4CompilerError,
                                                       M4CompilerWarning

This method must return the SQL definition of the newly created ColumnSet.

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

M4CompilerWarning