org.apache.derby.iapi.sql.execute
Interface TupleFilter

All Known Implementing Classes:
DropDependencyFilter

public interface TupleFilter

A TupleFilter is used to qualify rows from a tuple stream.

Author:
Rick

Method Summary
 BooleanDataValue execute(ExecRow currentRow)
          Pump a row through the Filter.
 void init(ExecRow parameters)
          Initialize a Filter with a vector of parameters.
 

Method Detail

init

public void init(ExecRow parameters)
          throws StandardException
Initialize a Filter with a vector of parameters.

Parameters:
parameters - An ExecRow of parameter values
Throws:
StandardException - Thrown on error

execute

public BooleanDataValue execute(ExecRow currentRow)
                         throws StandardException
Pump a row through the Filter.

Returns:
True if the row qualifies. False otherwise.
Throws:
StandardException - Thrown on error

Built on Mon 2007-06-04 09:58:47+0400, from revision ???

Apache Derby V10.1 Engine Documentation - Copyright © 1997,2005 The Apache Software Foundation or its licensors, as applicable.