com.metamatrix.query.processor.xml
Interface PlanExecutor

public interface PlanExecutor

This interface is responsible for executing the queries for the XML processing environment.

Method Summary

void	close() close the plan and cleanup the resultset.
java.util.List	currentRow() Get the result set values of the current row.
void	execute(java.util.Map referenceValues) Execute the plan
java.util.List	getOutputElements() Get the ElementSymbol list which represents the schema of the result set
java.util.List	nextRow() Advance the resultset cursor to next row and retun the row values

Method Detail

execute

void execute(java.util.Map referenceValues)
             throws MetaMatrixComponentException,
                    BlockedException,
                    MetaMatrixProcessingException

Execute the plan

Parameters:

referenceValues - - values for any external references

Throws:

MetaMatrixComponentException

BlockedException

MetaMatrixProcessingException

getOutputElements

java.util.List getOutputElements()
                                 throws MetaMatrixComponentException

Get the ElementSymbol list which represents the schema of the result set

Returns:

Throws:

MetaMatrixComponentException

nextRow

java.util.List nextRow()
                       throws MetaMatrixComponentException,
                              MetaMatrixProcessingException

Advance the resultset cursor to next row and retun the row values

Returns:

values of the row

Throws:

MetaMatrixComponentException

MetaMatrixProcessingException

currentRow

java.util.List currentRow()
                          throws MetaMatrixComponentException,
                                 MetaMatrixProcessingException

Get the result set values of the current row.

Returns:

Throws:

MetaMatrixComponentException

MetaMatrixProcessingException

close

void close()
           throws MetaMatrixComponentException

close the plan and cleanup the resultset.

Throws:

MetaMatrixComponentException