class AvailibilityQuerySolver(
  db_manager: SyncDBManager,
  query: AvailabilityQuery
)

_find_concepts() -> dict:

_solve_rules() -> None:

solve_query() -> int:

class BaseDistributionQuerySolver

solve_query() -> Tuple[str, int]:

class CodeDistributionQuerySolver(
  db_manager: SyncDBManager,
  query: DistributionQuery
)

solve_query() -> Tuple[str, int]:

class DemographicsDistributionQuerySolver(
  db_manager: SyncDBManager,
  query: DistributionQuery
)

solve_query() -> Tuple[str, int]:

solve_availability(
    db_manager: SyncDBManager, query: AvailabilityQuery
) -> RquestResult

def _get_distribution_solver(
    db_manager: SyncDBManager, query: DistributionQuery
) -> BaseDistributionQuerySolver

def solve_distribution(
    db_manager: SyncDBManager, query: DistributionQuery
) -> RquestResult