Package tools.refinery.interpreter.matchers.psystem.basicdeferred

Class AggregatorConstraint

java.lang.Object

tools.refinery.interpreter.matchers.psystem.BasePConstraint

tools.refinery.interpreter.matchers.psystem.DeferredPConstraint

tools.refinery.interpreter.matchers.psystem.VariableDeferredPConstraint

tools.refinery.interpreter.matchers.psystem.basicdeferred.PatternCallBasedDeferred

tools.refinery.interpreter.matchers.psystem.basicdeferred.AggregatorConstraint

All Implemented Interfaces:

IMultiQueryReference, IQueryReference, ITypeInfoProviderConstraint, PConstraint, PTraceable

public class AggregatorConstraint
extends PatternCallBasedDeferred
implements ITypeInfoProviderConstraint

The PSystem representation of an aggregation.

Since:

1.4

Field Summary

Fields

Modifier and Type	Field	Description
protected int	aggregatedColumn
protected PVariable	resultVariable

Fields inherited from class tools.refinery.interpreter.matchers.psystem.basicdeferred.PatternCallBasedDeferred

actualParametersTuple, query

Fields inherited from class tools.refinery.interpreter.matchers.psystem.BasePConstraint

pBody

Fields inherited from interface tools.refinery.interpreter.matchers.psystem.PConstraint

COMPARE_BY_MONOTONOUS_ID

Constructor Summary

Constructors

Constructor	Description
AggregatorConstraint(BoundAggregator aggregator, PBody pBody, Tuple actualParametersTuple, PQuery query, PVariable resultVariable, int aggregatedColumn)

Method Summary

Modifier and Type	Method	Description
protected void	doDoReplaceVariables(PVariable obsolete, PVariable replacement)
int	getAggregatedColumn()
BoundAggregator	getAggregator()
protected Set<PVariable>	getCandidateQuantifiedVariables()
Set<PVariable>	getDeducedVariables()	The set of variables whose potential values can be enumerated (once all non-deduced variables have known values).
Map<Set<PVariable>,Set<PVariable>>	getFunctionalDependencies(IQueryMetaContext context)	A (preferably minimal) cover of known functional dependencies between variables.
Set<TypeJudgement>	getImpliedJudgements(IQueryMetaContext context)	Returns type information implied by this constraint.
PVariable	getResultVariable()
protected String	toStringRest()

Methods inherited from class tools.refinery.interpreter.matchers.psystem.basicdeferred.PatternCallBasedDeferred

checkSanity, doReplaceVariable, getActualParametersTuple, getDeferringVariables, getReferredQuery

Methods inherited from class tools.refinery.interpreter.matchers.psystem.VariableDeferredPConstraint

isReadyAt

Methods inherited from class tools.refinery.interpreter.matchers.psystem.BasePConstraint

delete, getAffectedVariables, getBody, getMonotonousID, getPSystem, replaceVariable, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface tools.refinery.interpreter.matchers.psystem.IQueryReference

getReferredQueries

Methods inherited from interface tools.refinery.interpreter.matchers.psystem.PConstraint

checkSanity, delete, getAffectedVariables, getBody, getMonotonousID, replaceVariable

Field Details

resultVariable

protected PVariable resultVariable

aggregatedColumn

protected int aggregatedColumn

Constructor Details

AggregatorConstraint

public AggregatorConstraint(BoundAggregator aggregator,
 PBody pBody,
 Tuple actualParametersTuple,
 PQuery query,
 PVariable resultVariable,
 int aggregatedColumn)

Method Details

getAggregatedColumn

public int getAggregatedColumn()

getAggregator

public BoundAggregator getAggregator()

getDeducedVariables

public Set<PVariable> getDeducedVariables()

Description copied from interface: PConstraint

The set of variables whose potential values can be enumerated (once all non-deduced variables have known values).

Specified by:

getDeducedVariables in interface PConstraint

getFunctionalDependencies

public Map<Set<PVariable>,Set<PVariable>> getFunctionalDependencies(IQueryMetaContext context)

Description copied from interface: PConstraint

A (preferably minimal) cover of known functional dependencies between variables.

Specified by:

getFunctionalDependencies in interface PConstraint

Overrides:

getFunctionalDependencies in class BasePConstraint

Returns:

non-trivial functional dependencies in the form of {variables} --> {variables}, where dependencies with the same lhs are unified.

doDoReplaceVariables

protected void doDoReplaceVariables(PVariable obsolete,
 PVariable replacement)

Specified by:

doDoReplaceVariables in class PatternCallBasedDeferred

getCandidateQuantifiedVariables

protected Set<PVariable> getCandidateQuantifiedVariables()

Specified by:

getCandidateQuantifiedVariables in class PatternCallBasedDeferred

toStringRest

protected String toStringRest()

Specified by:

toStringRest in class BasePConstraint

getResultVariable

public PVariable getResultVariable()

getImpliedJudgements

public Set<TypeJudgement> getImpliedJudgements(IQueryMetaContext context)

Description copied from interface: ITypeInfoProviderConstraint

Returns type information implied by this constraint.

Specified by:

getImpliedJudgements in interface ITypeInfoProviderConstraint