Trait TenantFilterProvider 

pub trait TenantFilterProvider {
    // Required method
    fn tenant_condition<E>(scope: &AccessScope) -> Option<Condition>
       where E: ScopableEntity + EntityTrait,
             E::Column: ColumnTrait + Copy;
}

Provides tenant filtering logic for scoped queries.

This trait abstracts the tenant filtering mechanism, allowing for future enhancements like hierarchical tenant structures (“effective tenants”) without changing calling code.

Current Implementation

SimpleTenantFilter uses direct tenant_id IN (...) filtering.

Future Enhancement

A HierarchicalTenantFilter could query “effective tenant IDs” from a tenant hierarchy service and expand the filter accordingly.

Required Methods

fn tenant_condition<E>(scope: &AccessScope) -> Option<Condition>

where E: ScopableEntity + EntityTrait, E::Column: ColumnTrait + Copy,

Build a condition for tenant filtering based on the scope.

Returns:

• None if no tenant filtering needed (no tenant IDs in scope)
• Some(deny_all) if entity has no tenant column but tenants requested
• Some(filter) with appropriate tenant IN clause

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl TenantFilterProvider for SimpleTenantFilter