org.objectweb.medor.eval.lib
Class IteratifNodeEvaluatorFactory

java.lang.Object
  org.objectweb.medor.eval.lib.IteratifNodeEvaluatorFactory

All Implemented Interfaces:

NodeEvaluatorFactory

public class IteratifNodeEvaluatorFactory

extends java.lang.Object

implements NodeEvaluatorFactory

This class manage creation the iteratifs NodeEvaluators corresponding to QueryNodes. The method createNodeEvaluator is able to generate a NodeEvaluator for a Binary QueryNode and for Unary QueryNode, otherwise it throws a MedorException

Constructor Summary

IteratifNodeEvaluatorFactory()

Method Summary

NodeEvaluator

createNodeEvaluator(QueryNode node, NodeEvaluator[] subEvaluators, EvaluationMetaData evalMD) This methods creates a NodeEvaluator.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IteratifNodeEvaluatorFactory

public IteratifNodeEvaluatorFactory()

Method Detail

createNodeEvaluator

public NodeEvaluator createNodeEvaluator(QueryNode node,
                                         NodeEvaluator[] subEvaluators,
                                         EvaluationMetaData evalMD)
                                  throws MedorException

Description copied from interface: NodeEvaluatorFactory

This methods creates a NodeEvaluator. It chooses the right implementation depending on the type of operation, the EvaluationMetaData associated to the QueryNode. It does not create NodeEvaluators for the children QueryNodes of the parameter QueryNode. It is up to the Evaluator to call the Factory for creating NodeEvaluators for the subnodes.

Specified by:

createNodeEvaluator in interface NodeEvaluatorFactory

Throws:

MedorException