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// Copyright 2026 Nowledge
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Catalog schema helpers used by schema-maintenance operations.
pub use hawdb_core::schema::*;
/// Ensures the owning label/rel-type and the table descriptor exist.
pub fn ensure_table_descriptor(catalog: &mut Catalog, kind: TableKind, name: &str) -> TableId {
match kind {
TableKind::Node => {
catalog.get_or_create_label(name);
}
TableKind::Relationship => {
catalog.get_or_create_rel_type(name);
}
}
catalog.get_or_create_table(kind, name)
}
/// Reserves a schema-maintenance budget unit, returning `false` when it would
/// exceed the cap.
pub fn reserve_schema_maintenance_budget(
used_estimated_operations: &mut usize,
max_estimated_operations: Option<usize>,
estimated_operations: usize,
) -> bool {
let Some(max_estimated_operations) = max_estimated_operations else {
return true;
};
let next = used_estimated_operations.saturating_add(estimated_operations);
if next > max_estimated_operations {
return false;
}
*used_estimated_operations = next;
true
}