edu.udo.cs.miningmart.operator
Class MaterializeRelation

java.lang.Object
  edu.udo.cs.miningmart.operator.ExecutableOperator
      edu.udo.cs.miningmart.operator.MaterializeRelation

public class MaterializeRelation
extends ExecutableOperator

Author:

Martin Scholz

Field Summary

Fields inherited from class edu.udo.cs.miningmart.operator.ExecutableOperator

generatedSQLDefinitions

Constructor Summary

MaterializeRelation()

Method Summary

void	compileStatement() Not required.
void	createStatement(boolean lazy) Abstract method for generating an sql-statement.
EstimatedStatistics	estimateStatistics(Step theStep) Not required.
protected java.lang.String	getCrossTableName() Only n:m relations are currently supported.
protected Relation	getRelation() Gets the Relation.
protected java.lang.String	getSchema()
java.lang.String	getTableName() Gets the table name.

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

MaterializeRelation

public MaterializeRelation()

Method Detail

createStatement

public void createStatement(boolean lazy)
                     throws M4CompilerError

Description copied from class: ExecutableOperator

Abstract method for generating an sql-statement. This method handles the process of generating an sql-statement for an operator. The implementation is done individually by every operator.

Specified by:

createStatement in class ExecutableOperator

Parameters:

lazy - If TRUE, run in lazy mode: create atmost one output ColumnSet

Throws:

M4CompilerError

See Also:

ExecutableOperator.createStatement(boolean)

compileStatement

public void compileStatement()

Not required. Dummy method.

Specified by:

compileStatement in class ExecutableOperator

estimateStatistics

public EstimatedStatistics estimateStatistics(Step theStep)
                                       throws M4Exception

Not required. Dummy method.

Throws:

M4Exception

getTableName

public java.lang.String getTableName()
                              throws M4CompilerError

Gets the table name.

Returns:

a Concept

Throws:

M4CompilerError

getRelation

protected Relation getRelation()
                        throws M4CompilerError

Gets the Relation.

Returns:

a Relation

Throws:

M4CompilerError

getSchema

protected java.lang.String getSchema()
                              throws M4CompilerError,
                                     M4Exception

Returns:

the business schema of the cross-table as a String

Throws:

M4CompilerError

M4Exception

getCrossTableName

protected java.lang.String getCrossTableName()
                                      throws M4CompilerError

Only n:m relations are currently supported.

Returns:

the schemaPlusName String of the relation's cross-table

Throws:

M4CompilerError