uk.ac.bbk.dcs.automed.qproc.evaluate
Class Evaluator

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.evaluate.Evaluator

All Implemented Interfaces:

QueryEvaluationProvider

Direct Known Subclasses:

P2PQueryEvaluator

public class Evaluator
extends java.lang.Object
implements QueryEvaluationProvider

The class that coordinates the evaluation of IQL queries.

Field Summary

protected FunctionTable	_ft
protected QueryProcessorConfiguration	_qpc
protected java.util.Map	_qpCache
long	addApplyToSpine
int	applyToSpineCalls
int	builtins
long	builtinsTimeSpent
long	endApplyInSpine
long	endBuiltIn
long	endEval
long	endRL
long	endWHNF
long	evaluationTimeSpent
int	lambdaCalls
long	lambdaTimeSpent
protected java.util.logging.Logger	logger
int	performCalls
long	performEnd
long	performStart
long	performTimeSpent
int	realWHNFCalls
long	startApplyInSpine
long	startBuiltIn
long	startEval
long	startRL
long	startWHNF
int	totalEvaluateCalls
int	totalWHNFCalls
long	whnfTimeSpent

Constructor Summary

Evaluator(FunctionTable ftab)
Deprecated. use Evaluator(QueryProcessorConfiguration) instead

Evaluator(FunctionTable ftab, int sourceSchemaSID)
Deprecated. use Evaluator(QueryProcessorConfiguration) instead

Evaluator(QueryProcessorConfiguration qpc)

Method Summary

void	evaluate(ASG g, java.util.Map cache, QueryProcessorConfiguration qpc) Evaluates g to normal form.
void	evaluate(ASG g, QueryProcessorConfiguration qpc) Deprecated. use evaluate(ASG, Map, QueryProcessorConfiguration) instead
void	evaluate(Cell r) Evaluates the graph of which root is the root to normal form.
void	finalize()
QueryProcessorConfiguration	getConfiguration() Returns the specific configuration for each query processing phase
java.lang.String	getName() Return a unique name of a provider.
java.util.Map	getQPCache()
QueryDescription	getQueryDescription()
java.lang.String	getQueryID() Return the query ID
int	getSourceSchemaSID()
protected void	initialisePerformanceVars()
protected void	processConfiguration(QueryProcessorConfiguration qpc)
protected void	rangeSimplifications(ASG g)
void	setCacheStatus(boolean value) Deprecated. use QueryProcessorConfiguration.setCacheStatus instead
void	weakHeadNF(Cell root) Evaluates the input ASG to weak head normal form.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected java.util.logging.Logger logger

_qpc

protected QueryProcessorConfiguration _qpc

_qpCache

protected java.util.Map _qpCache

_ft

protected FunctionTable _ft

totalEvaluateCalls

public int totalEvaluateCalls

totalWHNFCalls

public int totalWHNFCalls

realWHNFCalls

public int realWHNFCalls

applyToSpineCalls

public int applyToSpineCalls

builtins

public int builtins

lambdaCalls

public int lambdaCalls

performCalls

public int performCalls

whnfTimeSpent

public long whnfTimeSpent

startWHNF

public long startWHNF

endWHNF

public long endWHNF

addApplyToSpine

public long addApplyToSpine

startApplyInSpine

public long startApplyInSpine

endApplyInSpine

public long endApplyInSpine

builtinsTimeSpent

public long builtinsTimeSpent

startBuiltIn

public long startBuiltIn

endBuiltIn

public long endBuiltIn

evaluationTimeSpent

public long evaluationTimeSpent

startEval

public long startEval

endEval

public long endEval

lambdaTimeSpent

public long lambdaTimeSpent

startRL

public long startRL

endRL

public long endRL

performTimeSpent

public long performTimeSpent

performStart

public long performStart

performEnd

public long performEnd

Constructor Detail

Evaluator

public Evaluator(QueryProcessorConfiguration qpc)

Evaluator

public Evaluator(FunctionTable ftab)

Deprecated. use Evaluator(QueryProcessorConfiguration) instead

Evaluator

public Evaluator(FunctionTable ftab,
                 int sourceSchemaSID)

Deprecated. use Evaluator(QueryProcessorConfiguration) instead

Method Detail

processConfiguration

protected void processConfiguration(QueryProcessorConfiguration qpc)

evaluate

public void evaluate(ASG g,
                     QueryProcessorConfiguration qpc)
              throws QueryEvaluationException

Deprecated. use evaluate(ASG, Map, QueryProcessorConfiguration) instead

Throws:

QueryEvaluationException

evaluate

public void evaluate(ASG g,
                     java.util.Map cache,
                     QueryProcessorConfiguration qpc)
              throws QueryEvaluationException

Evaluates g to normal form. Does not return a new ASG but instead changes g.

Specified by:

evaluate in interface QueryEvaluationProvider

Parameters:

g - an ASG object of an IQL query

qpc - a {@link QueryProcessingConfiguration) object specific for query evaluation

Throws:

TypeException

QProcException

QueryEvaluationException

getQueryID

public java.lang.String getQueryID()

Return the query ID

getQueryDescription

public QueryDescription getQueryDescription()

evaluate

public void evaluate(Cell r)
              throws TypeException,
                     QProcException

Evaluates the graph of which root is the root to normal form. Does not return a new ASG but instead changes the underlying ASG.

Throws:

TypeException

QProcException

initialisePerformanceVars

protected void initialisePerformanceVars()

weakHeadNF

public void weakHeadNF(Cell root)
                throws TypeException,
                       QProcException

Evaluates the input ASG to weak head normal form.

Throws:

TypeException

QProcException

getSourceSchemaSID

public int getSourceSchemaSID()

finalize

public void finalize()

Overrides:

finalize in class java.lang.Object

getName

public java.lang.String getName()

Description copied from interface: QueryEvaluationProvider

Return a unique name of a provider. This name is used as a key in a Map of provider objects

Specified by:

getName in interface QueryEvaluationProvider

getConfiguration

public QueryProcessorConfiguration getConfiguration()

Description copied from interface: QueryEvaluationProvider

Returns the specific configuration for each query processing phase

Specified by:

getConfiguration in interface QueryEvaluationProvider

rangeSimplifications

protected void rangeSimplifications(ASG g)

getQPCache

public java.util.Map getQPCache()

setCacheStatus

public void setCacheStatus(boolean value)

Deprecated. use QueryProcessorConfiguration.setCacheStatus instead