EntityPolicy

classin packageklyn.data

public abstract class EntityPolicy<T> implements EntityPolicyRegistration:

EntityPolicy

All Implemented Interfaces: EntityPolicyRegistration

Typed mandatory filter applied before provider lowering.

Implementations return a KQL query over the supplied source. The compiler therefore validates the policy with ordinary KQL rules, and SQL providers receive its canonical QIR rather than an opaque callback.

Example

@QueryPolicy
public class ActiveCustomerPolicy extends EntityPolicy<Customer>:
public override apply(
source as Queryable<Customer>,
context as PolicyContext
) as Query<Customer>:
return query:
from source customer
where customer.active

Properties

Modifier and Type	Member	Description
public readonly property	entityType `entityType as Type:`	Exact entity type protected by this policy.
public readonly property	policyType `policyType as Type:`	Concrete policy type used by authorization and audit events.

Methods

Modifier and Type	Member	Description
public	allows `allows(entity as Object, context as PolicyContext) as Boolean:`	Evaluates the identical policy over one materialized entity.
public abstract	apply `apply( source as Queryable<T>, context as PolicyContext ) as Query<T>`	Builds the mandatory typed query filter.
public	applyUntyped `applyUntyped(source as Object, context as PolicyContext) as Object:`	Applies this policy through the heterogeneous factory registry.
public	canonicalPolicy `canonicalPolicy(context as PolicyContext) as QirEntityPolicy:`	Compiles this policy once to the canonical QIR used by all providers.