org.objectweb.medor.eval.lib
Class BinaryIteratifNodeEvaluator
java.lang.Object
org.objectweb.medor.eval.lib.BinaryIteratifNodeEvaluator
- NodeEvaluator
public class BinaryIteratifNodeEvaluator
extends java.lang.Object
MEDOR: Middleware Enabling Distributed Object Requests
Copyright (C) 2001-2004 France Telecom R&D
Contact: alexandre.lefebvre@rd.francetelecom.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Initial developers: M. Alia, A. Lefebvre
fetchData
public TupleCollection fetchData(ParameterOperand[] parameters)
throws MedorException
This method executes the query on the underlying node.
It controls the evaluation locally for this node.
It returns the TupleCollection containing the result of the execution.
- fetchData in interface NodeEvaluator
linkChildren
public boolean linkChildren()
Opens the links between the current NodeEvaluator and the NodeEvaluators
of the children QueryTrees for pipelining operations.
TODO complete comments
- linkChildren in interface NodeEvaluator
unlinkChildren
public boolean unlinkChildren()
Closes the links between the current NodeEvaluator and the NodeEvaluators
of the children QueryTrees for pipelining operations.
TODO complete comments
- unlinkChildren in interface NodeEvaluator