icydb-core 0.68.2

IcyDB — A type-safe, embedded ORM and schema system for the Internet Computer
Documentation 
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//! Module: db::executor::route::contracts::capabilities
//! Responsibility: module-local ownership and contracts for db::executor::route::contracts::capabilities.
//! Does not own: cross-module orchestration outside this module.
//! Boundary: exposes this module API while keeping implementation details internal.

use crate::db::executor::aggregate::capability::AggregateFieldExtremaIneligibilityReason;

///
/// FieldExtremaIneligibilityReason
///
/// Route-surfaced alias of aggregate-policy field-extrema ineligibility reasons.
/// This preserves route diagnostics while aggregate capability policy owns derivation.
///

pub(in crate::db::executor) type FieldExtremaIneligibilityReason =
    AggregateFieldExtremaIneligibilityReason;

///
/// RouteCapabilities
///
/// Canonical derived capability snapshot for one logical plan and direction.
/// Route planning derives this once, then consumes it for eligibility and hint
/// decisions to reduce drift across helpers.
///

#[expect(clippy::struct_excessive_bools)]
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub(in crate::db::executor) struct RouteCapabilities {
    pub(in crate::db::executor) stream_order_contract_safe: bool,
    pub(in crate::db::executor) pk_order_fast_path_eligible: bool,
    pub(in crate::db::executor) desc_physical_reverse_supported: bool,
    pub(in crate::db::executor) count_pushdown_shape_supported: bool,
    pub(in crate::db::executor) count_pushdown_existing_rows_shape_supported: bool,
    pub(in crate::db::executor) index_range_limit_pushdown_shape_supported: bool,
    pub(in crate::db::executor) composite_aggregate_fast_path_eligible: bool,
    pub(in crate::db::executor) bounded_probe_hint_safe: bool,
    pub(in crate::db::executor) field_min_fast_path_eligible: bool,
    pub(in crate::db::executor) field_max_fast_path_eligible: bool,
    pub(in crate::db::executor) field_min_fast_path_ineligibility_reason:
        Option<FieldExtremaIneligibilityReason>,
    pub(in crate::db::executor) field_max_fast_path_ineligibility_reason:
        Option<FieldExtremaIneligibilityReason>,
}