/*******************************************************************************
 *     ___                  _   ____  ____
 *    / _ \ _   _  ___  ___| |_|  _ \| __ )
 *   | | | | | | |/ _ \/ __| __| | | |  _ \
 *   | |_| | |_| |  __/\__ \ |_| |_| | |_) |
 *    \__\_\\__,_|\___||___/\__|____/|____/
 *
 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2022 QuestDB
 *
 *  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.questdb.griffin.engine.groupby;

import io.questdb.cairo.sql.Function;
import io.questdb.cairo.sql.Record;
import io.questdb.cairo.sql.VirtualRecord;
import io.questdb.cairo.sql.VirtualRecordNoRowid;
import io.questdb.griffin.engine.functions.GroupByFunction;
import io.questdb.std.ObjList;

public abstract class AbstractVirtualRecordSampleByCursor extends AbstractNoRecordSampleByCursor {
    protected final VirtualRecord record;

    public AbstractVirtualRecordSampleByCursor(
            ObjList<Function> recordFunctions,
            int timestampIndex, // index of timestamp column in base cursor
            TimestampSampler timestampSampler,
            ObjList<GroupByFunction> groupByFunctions,
            Function timezoneNameFunc,
            int timezoneNameFuncPos,
            Function offsetFunc,
            int offsetFuncPos
    ) {
        super(
                recordFunctions,
                timestampIndex,
                timestampSampler,
                groupByFunctions,
                timezoneNameFunc,
                timezoneNameFuncPos,
                offsetFunc,
                offsetFuncPos
        );
        this.record = new VirtualRecordNoRowid(recordFunctions);
        for (int i = 0, n = recordFunctions.size(); i < n; i++) {
            Function f = recordFunctions.getQuick(i);
            if (f == null) {
                recordFunctions.setQuick(i, new TimestampFunc());
            }
        }
    }

    @Override
    public Record getRecord() {
        return record;
    }
}
