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 * Copyright (C) 2014-2019 Appsicle
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 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
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package com.questdb.griffin.model;

import com.questdb.std.IntList;
import com.questdb.std.ObjList;
import com.questdb.std.ObjectFactory;

public final class AnalyticColumn extends QueryColumn {
    public final static ObjectFactory FACTORY = AnalyticColumn::new;
    private final ObjList partitionBy = new ObjList<>(2);
    private final ObjList orderBy = new ObjList<>(2);
    private final IntList orderByDirection = new IntList(2);

    private AnalyticColumn() {
    }

    public void addOrderBy(ExpressionNode node, int direction) {
        orderBy.add(node);
        orderByDirection.add(direction);
    }

    @Override
    public void clear() {
        super.clear();
        partitionBy.clear();
        orderBy.clear();
        orderByDirection.clear();
    }

    public ObjList getPartitionBy() {
        return partitionBy;
    }

    public ObjList getOrderBy() {
        return orderBy;
    }

    public IntList getOrderByDirection() {
        return orderByDirection;
    }

    @Override
    public AnalyticColumn of(CharSequence alias, ExpressionNode ast) {
        return (AnalyticColumn) super.of(alias, ast);
    }
}