uk.ac.bbk.dcs.automed.qproc.optimise.physicalOptimisers
Class ComprehensionHeadSimplifierUndoPhysicalOptimiser

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.optimise.Optimiser
      uk.ac.bbk.dcs.automed.qproc.optimise.optimisers.ComprehensionHeadSimplifierUndo
          uk.ac.bbk.dcs.automed.qproc.optimise.physicalOptimisers.ComprehensionHeadSimplifierUndoPhysicalOptimiser

public class ComprehensionHeadSimplifierUndoPhysicalOptimiser
extends ComprehensionHeadSimplifierUndo

Extends ComprehensionHeadSimplifierUndo so that the optimisation occurs only if:

1. the comprehension argument to the map function is a single level comprehension
2. the schemes of the comprehension are all of the same data model
3. this data model is one of the supported models as specified in supportedModels

Author:

Lucas Zamboulis

Field Summary

java.util.Set

supportedModels

Fields inherited from class uk.ac.bbk.dcs.automed.qproc.optimise.Optimiser

logger, targets

Constructor Summary

ComprehensionHeadSimplifierUndoPhysicalOptimiser(QueryOptimisationProvider qop)

Method Summary

protected boolean

match(Cell c)

Methods inherited from class uk.ac.bbk.dcs.automed.qproc.optimise.optimisers.ComprehensionHeadSimplifierUndo

optimise

Methods inherited from class uk.ac.bbk.dcs.automed.qproc.optimise.Optimiser

getValueBasedOptimisation, optimise, optimise, setValueBasedOptimisation

Methods inherited from class java.lang.Object

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

Field Detail

supportedModels

public java.util.Set supportedModels

Constructor Detail

ComprehensionHeadSimplifierUndoPhysicalOptimiser

public ComprehensionHeadSimplifierUndoPhysicalOptimiser(QueryOptimisationProvider qop)

Method Detail

match

protected boolean match(Cell c)

Overrides:

match in class ComprehensionHeadSimplifierUndo