org.evrete.api

Interface Evaluator

All Superinterfaces:

ValuesPredicate

public interface Evaluator
extends ValuesPredicate

An internal representation of every condition in the rule engine.

Field Summary

Fields

Modifier and Type	Field and Description
static int	RELATION_EQUALS
static int	RELATION_INVERSE
static int	RELATION_NONE

Method Summary

Modifier and Type	Method and Description
default int	compare(Evaluator other)
FieldReference[]	descriptor() Describes fields and their ordering to be used during the evaluation
default Object[]	toArray(IntToValue values) A convenience method to convert evaluator's arguments to object array.

Methods inherited from interface org.evrete.api.ValuesPredicate

test

Field Detail

RELATION_NONE

static final int RELATION_NONE

See Also:

Constant Field Values

RELATION_EQUALS

static final int RELATION_EQUALS

See Also:

Constant Field Values

RELATION_INVERSE

static final int RELATION_INVERSE

See Also:

Constant Field Values

Method Detail

descriptor

FieldReference[] descriptor()

Describes fields and their ordering to be used during the evaluation

Returns:

fields in correct order

compare

default int compare(Evaluator other)

Parameters:

other - predicate

Returns:

positive integer (>0) if predicates are logically the same, negative integer (<0) if predicates are logically inverted (like a == 2 and a != 2) zero (0) if there is no knowledge about the two or if they are independent

toArray

default Object[] toArray(IntToValue values)

A convenience method to convert evaluator's arguments to object array.

Parameters:

values - evaluator's arguments as a functional interface

Returns:

arguments as an array