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java.lang.Objectedu.udo.cs.miningmart.operator.ExecutableOperator
edu.udo.cs.miningmart.operator.ConceptOperator
edu.udo.cs.miningmart.operator.SingleCSOperator
edu.udo.cs.miningmart.operator.CreatePrimaryKey
This operator is able to convert a view with no key and maybe multiple occurences of tuples into a view with a single primary key attribute. Elimination of multiple tuple occurences can be selected as a parameter.
Field Summary |
Fields inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator |
generatedSQLDefinitions |
Constructor Summary | |
CreatePrimaryKey()
|
Method Summary | |
protected java.lang.String |
generateColumns(Columnset csForOutputConcept)
The super method is enhanced by creating a new Column for the key. |
java.lang.String |
generateSQLDefinition(java.lang.String selectPart)
This method must return the SQL definition of the newly created ColumnSet. |
boolean |
getAllowDuplicates()
Getter for the parameter "AllowDuplicates" |
BaseAttribute |
getPrimaryKey()
Getter for the parameter "PrimaryKey" |
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, getInputConcept, getNewCSName, getOutputConcept, getStringForSelection, setNewCSMultiStepBranch |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public CreatePrimaryKey()
Method Detail |
public java.lang.String getTypeOfNewColumnSet()
SingleCSOperator
getTypeOfNewColumnSet
in class SingleCSOperator
SingleCSOperator.getTypeOfNewColumnSet()
protected java.lang.String generateColumns(Columnset csForOutputConcept) throws M4CompilerError
generateColumns
in class ConceptOperator
csForOutputConcept
- The ColumnSet for which Columns are to be produced.
M4CompilerError
miningmart.operator.ConceptOperator#generateColumns(Columnset)
public java.lang.String generateSQLDefinition(java.lang.String selectPart) throws M4CompilerError
SingleCSOperator
generateSQLDefinition
in class SingleCSOperator
selectPart
- The SQL string between "SELECT" and "FROM" for the
SQL definition to be returned.
M4CompilerError
SingleCSOperator.generateSQLDefinition(String)
protected boolean mustCopyFeature(java.lang.String nameOfFeature) throws M4CompilerError
ConceptOperator
mustCopyFeature
in class ConceptOperator
nameOfFeature
- Name of the feature in question.
M4CompilerError
ConceptOperator.mustCopyFeature(String)
public boolean getAllowDuplicates() throws M4CompilerError
boolean
, true
means that duplicates are allowed,
the default is false
.
M4CompilerError
public BaseAttribute getPrimaryKey() throws M4CompilerError
BaseAttribute
M4CompilerError
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