/*
 * Copyright (c) nosqlbench
 *
 * 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.nosqlbench.engine.extensions.vectormath;

import com.datastax.oss.driver.api.core.cql.Row;
import io.nosqlbench.nb.api.components.core.NBBaseComponent;
import io.nosqlbench.nb.api.components.core.NBComponent;

import java.util.List;
import java.util.Objects;

public class CqlUtils extends NBBaseComponent {

    public CqlUtils(NBComponent parentComponent) {
        super(parentComponent);
    }

    public static long[] cqlRowFieldsToLongArray(String fieldName, List<Row> rows) {
        return rows.stream().mapToLong(r -> r.getLong(fieldName)).toArray();
    }

    public static String[] cqlRowFieldsToStringArray(String fieldName, List<Row> rows) {
        return rows.stream().map(r -> r.getString(fieldName)).toArray(String[]::new);
    }

    public static int[] cqlRowListToIntArray(String fieldName, List<Row> rows) {
        return rows.stream().mapToInt(r -> r.getInt(fieldName)).toArray();
    }

    public static int[] cqlStringColumnToIntArray(String fieldName, List<Row> rows) {
        return rows.stream().mapToInt(r -> Integer.parseInt(Objects.requireNonNull(r.getString(fieldName)))).toArray();
    }

}
