Class FactIdentityComparerRegistry

Namespace

NRules

Assembly

NRules.dll

Registry of custom equality comparers for specific fact types used by IFactIdentityComparer when managing facts in the rules session.

public class FactIdentityComparerRegistry

Inheritance

object

FactIdentityComparerRegistry

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Properties

DefaultFactIdentityComparer

Default equality comparer used to compare fact identity, when inserting, updating, removing facts within the rules session. Used by IFactIdentityComparer when no custom comparer is registered for the fact type.

public IEqualityComparer<object> DefaultFactIdentityComparer { get; set; }

Property Value

IEqualityComparer<object>

Remarks

Built-in implementation uses IIdentityProvider if implemented by the fact, to compare fact identity. Otherwise, it uses the fact's equality for identity comparison.

Methods

RegisterComparer<TFact>(IEqualityComparer<TFact>)

Register a custom fact identity comparer for a specific fact type. Used by IFactIdentityComparer to compare identity of facts of the specified type.

public void RegisterComparer<TFact>(IEqualityComparer<TFact> comparer)

Parameters

comparer IEqualityComparer<TFact>

Custom fact identity comparer.

Type Parameters

TFact

Type of fact for which identity comparer is registered.

Remarks

Custom comparers are not polymorphic. They are used only for the exact type they are registered for.