/*
 * 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.storage.basic;

import org.apache.ignite.internal.storage.DataRow;
import org.apache.ignite.internal.storage.InvokeClosure;
import org.apache.ignite.internal.storage.OperationType;
import org.jetbrains.annotations.Nullable;

/** Invoke closure implementation for read operation. */
public class SimpleReadInvokeClosure implements InvokeClosure<Void> {
    /** Copy of the row that was passed to {@link #call(DataRow)} method. */
    @Nullable
    private DataRow row;

    /** {@inheritDoc} */
    @Override
    public void call(@Nullable DataRow row) {
        this.row = row == null ? null : new SimpleDataRow(row.keyBytes(), row.valueBytes());
    }

    /** {@inheritDoc} */
    @Nullable
    @Override
    public DataRow newRow() {
        return null;
    }

    /** {@inheritDoc} */
    @Nullable
    @Override
    public OperationType operationType() {
        return OperationType.NOOP;
    }

    /**
     * Copy of the row that was passed to {@link #call(DataRow)} method.
     *
     * @return Copy of data row.
     */
    @Nullable
    public DataRow row() {
        return row;
    }
}
