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## edu.udo.cs.miningmart.operator
Class MultipleCSOperator

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

Direct Known Subclasses:
  Segmentation, Unsegment

    public abstract class MultipleCSOperator

extends ConceptOperator

This abstract class is the superclass for all operators that create more than one ColumnSet for the output concept.

Version:
  $Id: MultipleCSOperator.java,v 1.5 2006/09/27 14:59:55 euler Exp $
Author:
  Timm Euler
See Also:
  `edu.udo.cs.miningmart.m4.core.operator.SingleCSOperator`, `edu.udo.cs.miningmart.m4.core.operator.ConceptOperator`, `edu.udo.cs.miningmart.m4.core.operator.Segmentation`

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
`MultipleCSOperator()`

Method Summary
`Columnset[]` | `generateColumnSetsForOp(boolean lazy)` Abstract method to be implemented by subclasses.
`protected java.lang.String` | `handleExtraOutputFeature(Feature outputFeature, Columnset csForOuputConcept)` The standard handling of extra output features is printing out a warning.
`abstract int` | `numberOfColumnSets()` Must return the number of ColumnSets this operator will produce.

Methods inherited from class edu.udo.cs.miningmart.operator.ConceptOperator
`compileStatement, createMetadata, createMetadataForOneBA, createSingleColumnSet, createStatement, generateColumns, generateSQLDefinition, getInputConcept, getNewCSName, getOutputConcept, getStringForSelection, getTypeOfNewColumnSet, 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

### MultipleCSOperator

    public MultipleCSOperator()

Method Detail

### numberOfColumnSets

    public abstract int numberOfColumnSets()
                                    throws M4CompilerError

  Must return the number of ColumnSets this operator will produce.

  Returns:
    the number of Columnsets this operator will produce
  Throws:
    `M4CompilerError`

### 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`

### 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`

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