INSPredicateValidating Interface

Definition

Namespace:: Foundation

Assembly:: Microsoft.iOS.dll

Assembly:: Microsoft.MacCatalyst.dll

Assembly:: Microsoft.macOS.dll

Assembly:: Microsoft.tvOS.dll

Important

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Provides custom validation logic for NSPredicate and NSExpression objects before they are evaluated.

[Foundation.Protocol(BackwardsCompatibleCodeGeneration=false, Name="NSPredicateValidating", WrapperType=typeof(Foundation.NSPredicateValidatingWrapper))]
[Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitPredicate", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSPredicate), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitPredicate:error:")]
[Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitExpression", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSExpression), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitExpression:error:")]
[Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitOperatorType", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSPredicateOperatorType), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitOperatorType:error:")]
[Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitExpressionKeyPath", ParameterByRef=new System.Boolean[] { false, false, false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSExpression), typeof(System.String), typeof(System.String), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitExpressionKeyPath:scope:key:error:")]
public interface INSPredicateValidating : IDisposable, ObjCRuntime.INativeObject

[<Foundation.Protocol(BackwardsCompatibleCodeGeneration=false, Name="NSPredicateValidating", WrapperType=typeof(Foundation.NSPredicateValidatingWrapper))>]
[<Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitPredicate", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSPredicate), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitPredicate:error:")>]
[<Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitExpression", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSExpression), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitExpression:error:")>]
[<Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitOperatorType", ParameterByRef=new System.Boolean[] { false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSPredicateOperatorType), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitOperatorType:error:")>]
[<Foundation.ProtocolMember(IsProperty=false, IsRequired=false, IsStatic=false, Name="VisitExpressionKeyPath", ParameterByRef=new System.Boolean[] { false, false, false, true }, ParameterType=new System.Type[] { typeof(Foundation.NSExpression), typeof(System.String), typeof(System.String), typeof(Foundation.NSError) }, ReturnType=typeof(System.Boolean), Selector="visitExpressionKeyPath:scope:key:error:")>]
type INSPredicateValidating = interface
    interface INativeObject
    interface IDisposable

Derived: Foundation.NSPredicateValidating

Attributes: ProtocolAttribute ProtocolMemberAttribute

Implements: INativeObject IDisposable

Remarks

Implement this protocol to control which predicates and expressions are considered safe for evaluation. Each visitor method is called during validation, allowing the implementation to inspect and approve or reject individual components of a predicate tree.

Properties

Name	Description
Handle	Handle (pointer) to the unmanaged object representation. (Inherited from INativeObject)

Methods

Name	Description
VisitExpression(NSExpression, NSError)	Validates whether the specified expression is allowed to be evaluated.
VisitExpressionKeyPath(NSExpression, String, String, NSError)	Validates whether the specified key path expression is allowed to be evaluated.
VisitOperatorType(NSPredicateOperatorType, NSError)	Validates whether the specified comparison operator type is allowed to be used in a predicate.
VisitPredicate(NSPredicate, NSError)	Validates whether the specified predicate is allowed to be evaluated.

Extension Methods

Name	Description
GetHandle(INativeObject)
GetNonNullHandle(INativeObject, String)

Applies to