|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectedu.udo.cs.miningmart.operator.ExecutableOperator
edu.udo.cs.miningmart.operator.FeatureConstruction
edu.udo.cs.miningmart.operator.MissingValues
The abstract superclass of all operators that replace a missing value with a new value. It implements the abstract method generateColumnForOp() inherited from FeatureConstruction. All its subclasses only have to implement the abstract generateValueForOp() method specified here.
Constructor Summary | |
MissingValues()
|
Method Summary | |
java.lang.String |
generateSQL(Column theTargetAttributeColumn)
Method to update the Column structure for missing values. - Generate the common sql-string to replace only NULL-values - call the subclass-specific method to generate the value to be filled for NULL-values |
abstract java.lang.String |
generateValueForOp(Column columnWithMissingValues)
The abstract method to be implemented by the subclasses. |
Methods inherited from class edu.udo.cs.miningmart.operator.FeatureConstruction |
compileStatement, createStatement, estimateStatistics, execute, generateColumnForOp, getCurrentLoopNumber, getTheInputConcept, getTheOutputAttribute, getTheOutputAttribute, getTheTargetAttribute, getTheTargetAttribute, load, writeResults |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public MissingValues()
Method Detail |
public java.lang.String generateSQL(Column theTargetAttributeColumn) throws M4CompilerError
generateSQL
in class FeatureConstruction
theTargetAttributeColumn
- the Column object of the column with the missing values
M4CompilerError
- A simple exception object with an error message.public abstract java.lang.String generateValueForOp(Column columnWithMissingValues) throws M4CompilerError
columnWithMissingValues
- The Column which has some missing values.
M4CompilerError
- A simple exception object with an error message.
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |