@finos/legend-graph
Version:
Legend graph and graph manager
39 lines • 1.43 kB
JavaScript
/**
* Copyright (c) 2020-present, Goldman Sachs
*
* 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.
*/
import { CORE_HASH_STRUCTURE } from '../../../../../graph/Core_HashUtils.js';
import { hashArray } from '@finos/legend-shared';
export class Multiplicity {
lowerBound;
upperBound;
constructor(lowerBound, upperBound) {
this.lowerBound = lowerBound;
this.upperBound = upperBound;
}
get hashCode() {
return hashArray([
CORE_HASH_STRUCTURE.MULTIPLICITY,
this.lowerBound.toString(),
this.upperBound?.toString() ?? '',
]);
}
// common multiplicities
static ZERO = new Multiplicity(0, 0);
static ZERO_ONE = new Multiplicity(0, 1);
static ZERO_MANY = new Multiplicity(0, undefined);
static ONE = new Multiplicity(1, 1);
static ONE_MANY = new Multiplicity(1, undefined);
}
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