hazelcast-master/hazelcast/src/main/java/com/hazelcast/internal/util/UUIDSerializationUtil.java
/*
 * Copyright (c) 2008-2023, Hazelcast, 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 com.hazelcast.internal.util;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.UUID;

/**
 * Util methods for UUID serialization / deserialization operations.
 */
public final class UUIDSerializationUtil {
    private UUIDSerializationUtil() {
    }

    public static void writeUUID(DataOutput out, UUID uuid) throws IOException {
        boolean isNull = uuid == null;
        out.writeBoolean(isNull);
        if (isNull) {
            return;
        }
        out.writeLong(uuid.getMostSignificantBits());
        out.writeLong(uuid.getLeastSignificantBits());
    }

    public static UUID readUUID(DataInput in) throws IOException {
        boolean isNull = in.readBoolean();
        if (isNull) {
            return null;
        }
        long most = in.readLong();
        long least = in.readLong();
        return new UUID(most, least);
    }
}
