ai.grakn.graql.internal.reasoner

Enum UnifierType

java.lang.Object

java.lang.Enum<UnifierType>

ai.grakn.graql.internal.reasoner.UnifierType

All Implemented Interfaces:

UnifierComparison, Serializable, Comparable<UnifierType>

public enum UnifierType
extends Enum<UnifierType>
implements UnifierComparison

Class defining different unifier types.

Author:

Kasper Piskorski

Enum Constant Summary

Enum Constants

Enum Constant and Description
EXACT Exact unifier, requires type and id predicate bindings to match.
RULE Rule unifier, found between queries and rule heads, allows rule heads to be more specific than matched queries.
STRUCTURAL Similar to rule one with addition to allowing id predicates to differ.

Method Summary

Modifier and Type	Method and Description
static UnifierType	valueOf(String name) Returns the enum constant of this type with the specified name.
static UnifierType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ai.grakn.graql.admin.UnifierComparison

atomicCompatibility, typeCompatibility, typePlayability

Enum Constant Detail

EXACT

public static final UnifierType EXACT

Exact unifier, requires type and id predicate bindings to match.

RULE

public static final UnifierType RULE

Rule unifier, found between queries and rule heads, allows rule heads to be more specific than matched queries.

STRUCTURAL

public static final UnifierType STRUCTURAL

Similar to rule one with addition to allowing id predicates to differ.

Method Detail

values

public static UnifierType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (UnifierType c : UnifierType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static UnifierType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null