/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.ignite.internal.table.distributed.command.response;

import java.io.Serializable;
import org.apache.ignite.internal.schema.BinaryRow;
import org.apache.ignite.internal.schema.ByteBufferRow;
import org.apache.ignite.internal.table.distributed.command.CommandUtils;
import org.jetbrains.annotations.Nullable;

/**
 * This class represents a response object message that contains a single {@link BinaryRow}.
 */
public class SingleRowResponse implements Serializable {
    /** Binary row. */
    @Nullable
    private transient BinaryRow row;

    /**
     * Row bytes. It is a temporary solution, before network have not implement correct serialization BinaryRow.
     * TODO: Remove the field after (IGNITE-14793).
     */
    private byte[] rowBytes;

    /**
     * Creates a new instance of SingleRowResponse with the given binary row.
     *
     * @param row Binary row.
     */
    public SingleRowResponse(@Nullable BinaryRow row) {
        this.row = row;

        rowBytes = CommandUtils.rowToBytes(row);
    }

    /**
     * Returns binary row.
     */
    @Nullable
    public BinaryRow getValue() {
        if (row == null && rowBytes != null) {
            row = new ByteBufferRow(rowBytes);
        }

        return row;
    }
}
