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Kafka Compatible Schema Registry

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/**
 * Copyright (c) 2019 - 2024 StreamNative, Inc.. All Rights Reserved.
 */
/**
 * 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 io.streamnative.pulsar.handlers.kop.schemaregistry.model;

import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import lombok.experimental.SuperBuilder;

/**
 * Schema key for storing in the schema storage cache.
 */
@Data
@SuperBuilder
@EqualsAndHashCode(callSuper = true)
@NoArgsConstructor
public class SchemaKey extends SubjectKey {

    private Integer version;

    public SchemaKey(String subject,
                     Integer version) {
        super(SchemaRegistryKeyType.SCHEMA, subject);
        this.version = version;
    }

    @Override
    public int compareTo(SchemaRegistryKey o) {
        int compare = super.compareTo(o);
        if (compare != 0) {
            return compare;
        }
        SchemaKey that = (SchemaKey) o;
        return this.version.compareTo(that.version);
    }

    @Override
    public String toString() {
        return String.format("%s/%d", getSubject(), version);
    }

}