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A json schema validator that supports draft v4, v6, v7, v2019-09 and v2020-12

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/*
 * Copyright (c) 2020 Network New Technologies Inc.
 *
 * 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.
 */
package com.networknt.schema;

import java.util.Optional;

public class SpecVersion {

    public enum VersionFlag {

        V4(1 << 0, SchemaId.V4),
        V6(1 << 1, SchemaId.V6),
        V7(1 << 2, SchemaId.V7),
        V201909(1 << 3, SchemaId.V201909),
        V202012(1 << 4, SchemaId.V202012);


        private final long versionFlagValue;
        private final String id;

        VersionFlag(long versionFlagValue, String id) {
            this.versionFlagValue = versionFlagValue;
            this.id = id;
        }

        public String getId() {
            return this.id;
        }

        public long getVersionFlagValue() {
            return this.versionFlagValue;
        }

        public static Optional fromId(String id) {
            for (VersionFlag v: VersionFlag.values()) {
                if (v.id.equals(id)) return Optional.of(v);
            }
            return Optional.empty();
        }
    }

}