org.deri.iris.facts
Class Facts

java.lang.Object
  org.deri.iris.facts.Facts

All Implemented Interfaces:

IFacts

public class Facts
extends Object
implements IFacts

A manager for all facts stored in a knowledge-base.

Field Summary

protected Map<IPredicate,IRelation>	mPredicateRelationMap The map storing the predicate-relation relationship.
protected IRelationFactory	mRelationFactory

Constructor Summary

Facts(IRelationFactory relationFactory)
Constructor.

Facts(Map<IPredicate,IRelation> rawFacts, IRelationFactory relationFactory)
Construct a Facts object from a predicate-relation map.

Method Summary

IRelation	get(IPredicate predicate) Get the relation associated with the given predicate and create one if one does not already exist.
Set<IPredicate>	getPredicates() Get the set of predicate identifying all relations known to this facts object.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

mPredicateRelationMap

protected final Map<IPredicate,IRelation> mPredicateRelationMap

The map storing the predicate-relation relationship.

mRelationFactory

protected final IRelationFactory mRelationFactory

Constructor Detail

Facts

public Facts(IRelationFactory relationFactory)

Constructor.

Facts

public Facts(Map<IPredicate,IRelation> rawFacts,
             IRelationFactory relationFactory)

Construct a Facts object from a predicate-relation map.

Parameters:

rawFacts - The facts to add.

Method Detail

get

public IRelation get(IPredicate predicate)

Description copied from interface: IFacts

Get the relation associated with the given predicate and create one if one does not already exist.

Specified by:

get in interface IFacts

Parameters:

predicate - The predicate identifying the relation.

Returns:

The relation associated with the given predicate.

getPredicates

public Set<IPredicate> getPredicates()

Description copied from interface: IFacts

Get the set of predicate identifying all relations known to this facts object.

Specified by:

getPredicates in interface IFacts

Returns:

toString

public String toString()

Overrides:

toString in class Object