de.unidu.is.pdatalog
Class EDBComputedRelation

java.lang.Object
  de.unidu.is.pdatalog.Relation
      de.unidu.is.pdatalog.EDBComputedRelation

Direct Known Subclasses:

EqualsRelation, GreaterEqualsRelation, GreaterThanRelation, LessEqualsRelation, LessThanRelation, StartsWithRelation, VagueLessThanRelation

public abstract class EDBComputedRelation

extends Relation

A class for pDatalog++ relation which is computed on demand.

Since:

2003-10-07

Version:

$Revision: 1.5 $, $Date: 2005/02/28 22:27:54 $

Author:

Henrik Nottelmann

Field Summary

Fields inherited from class de.unidu.is.pdatalog.Relation

arity, base, name

Constructor Summary

EDBComputedRelation(RelationBase base, java.lang.String name, int arity)
Constructs a new relation, and automatically adds it to the relation base.

EDBComputedRelation(RelationBase base, java.lang.String name, int arity, boolean create)
Constructs a new relation, and automatically adds it to the relation base.

Method Summary

abstract void	addProb(Literal literal, java.util.List prob) Adds arguments for computing a probability for the literal to the specified list.
abstract void	addWhere(Literal literal, java.util.List where) Adds arguments for filtering for the literal to the specified list.

Methods inherited from class de.unidu.is.pdatalog.Relation

getArity, getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

EDBComputedRelation

public EDBComputedRelation(RelationBase base,
                           java.lang.String name,
                           int arity)

Constructs a new relation, and automatically adds it to the relation base.

Parameters:

base - corresponding relation base

name - relatio n name

arity - arity of the relation

EDBComputedRelation

public EDBComputedRelation(RelationBase base,
                           java.lang.String name,
                           int arity,
                           boolean create)

Constructs a new relation, and automatically adds it to the relation base.

Parameters:

base - corresponding relation base

name - relatio n name

arity - arity of the relation

create - if true, the relation is physically created

Method Detail

addProb

public abstract void addProb(Literal literal,
                             java.util.List prob)

Adds arguments for computing a probability for the literal to the specified list.

Parameters:

literal - literal to be handled

prob - list of arguments for computing a probability

addWhere

public abstract void addWhere(Literal literal,
                              java.util.List where)

Adds arguments for filtering for the literal to the specified list.

Parameters:

literal - literal to be handled

where - list of arguments for filtering