uk.ac.bbk.dcs.automed.qproc.optimise
Class AbstractOptimisationProvider

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.optimise.AbstractOptimisationProvider

All Implemented Interfaces:

QueryOptimisationProvider

Direct Known Subclasses:

StandardOptimisationProvider

public abstract class AbstractOptimisationProvider
extends java.lang.Object
implements QueryOptimisationProvider

Author:

Lucas Zamboulis

Field Summary

protected java.util.logging.Logger	logger
protected ParameterisedQueryCache	qcache
protected boolean	valueBasedOptimisation

Constructor Summary

AbstractOptimisationProvider()

Method Summary

boolean	getValueBasedOptimisation()
protected abstract void	logicalOptimisation(ASG query, Schema[] targets, QueryProcessorConfiguration qpc)
void	optimise(ASG query, Schema[] targets, QueryProcessorConfiguration qpc) Optimise an IQL query based on a given configuration
protected abstract void	physicalOptimisation(ASG query, Schema[] targets, QueryProcessorConfiguration qpc)
void	setValueBasedOptimisation(boolean value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.ic.doc.automed.qproc.opti.QueryOptimisationProvider

getName

Field Detail

logger

protected java.util.logging.Logger logger

valueBasedOptimisation

protected boolean valueBasedOptimisation

qcache

protected ParameterisedQueryCache qcache

Constructor Detail

AbstractOptimisationProvider

public AbstractOptimisationProvider()

Method Detail

setValueBasedOptimisation

public void setValueBasedOptimisation(boolean value)

Specified by:

setValueBasedOptimisation in interface QueryOptimisationProvider

getValueBasedOptimisation

public boolean getValueBasedOptimisation()

Specified by:

getValueBasedOptimisation in interface QueryOptimisationProvider

optimise

public void optimise(ASG query,
                     Schema[] targets,
                     QueryProcessorConfiguration qpc)
              throws QueryOptimisationException

Description copied from interface: QueryOptimisationProvider

Optimise an IQL query based on a given configuration

Specified by:

optimise in interface QueryOptimisationProvider

Parameters:

query - an ASG object of an IQL query

Throws:

QueryOptimisationException

logicalOptimisation

protected abstract void logicalOptimisation(ASG query,
                                            Schema[] targets,
                                            QueryProcessorConfiguration qpc)
                                     throws QueryOptimisationException

Throws:

QueryOptimisationException

physicalOptimisation

protected abstract void physicalOptimisation(ASG query,
                                             Schema[] targets,
                                             QueryProcessorConfiguration qpc)
                                      throws QueryOptimisationException

Throws:

QueryOptimisationException