edu.udo.cs.miningmart.operator
Class RowSelection

java.lang.Object
  extended byedu.udo.cs.miningmart.operator.ExecutableOperator
      extended byedu.udo.cs.miningmart.operator.ConceptOperator
          extended byedu.udo.cs.miningmart.operator.SingleCSOperator
              extended byedu.udo.cs.miningmart.operator.RowSelection
Direct Known Subclasses:
DeleteRecordsWithMissingValues, RowSelectionByDeleteMissingValues, RowSelectionByQuery, RowSelectionByRandomSampling, RowSelectionByUnbiasing

public abstract class RowSelection
extends SingleCSOperator

Version:
$Id: RowSelection.java,v 1.3 2006/04/11 14:10:10 euler Exp $
Author:
Timm Euler

Field Summary
 
Fields inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator
generatedSQLDefinitions
 
Constructor Summary
RowSelection()
           
 
Method Summary
abstract  java.lang.String generateConditionForOp()
          Abstract method to be implemented by all subclasses.
 java.lang.String generateSQLDefinition(java.lang.String selectPart)
          This method must return the SQL definition of the newly created ColumnSet.
 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.
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, estimateStatistics, generateColumns, getInputConcept, 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, 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

RowSelection

public RowSelection()
Method Detail

generateSQLDefinition

public java.lang.String generateSQLDefinition(java.lang.String selectPart)
                                       throws M4CompilerError
Description copied from class: SingleCSOperator
This method must return the SQL definition of the newly created ColumnSet.

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
See Also:
edu.udo.cs.miningmart.m4.core.operator.SingleCSOperator#generateSQLDefinition(String)

generateConditionForOp

public abstract java.lang.String generateConditionForOp()
                                                 throws M4CompilerError
Abstract method to be implemented by all subclasses. Must return the String for the WHERE part of the SQL definition of the output columnset.

Returns:
the WHERE condition
Throws:
M4CompilerError

getTypeOfNewColumnSet

public java.lang.String getTypeOfNewColumnSet()
Description copied from class: SingleCSOperator
This method must return the entry String for the M4 table "Columnset_t", indicating whether the new Columnset is a view or a table.

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(int)

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.
See Also:
edu.udo.cs.miningmart.m4.core.operator.ConceptOperator#mustCopyFeature(String)


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