fun.langel.cql.node.GroupBy Maven / Gradle / Ivy

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/*
 * Copyright (c) 2022. Lorem ipsum dolor sit amet, consectetur adipiscing elit.
 * Morbi non lorem porttitor neque feugiat blandit. Ut vitae ipsum eget quam lacinia accumsan.
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 * Proin dapibus sapien vel ante. Aliquam erat volutpat. Pellentesque sagittis ligula eget metus.
 * Vestibulum commodo. Ut rhoncus gravida arcu.
 */

package fun.langel.cql.node;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

/**
 * @author [email protected](GuHan)
 * @date 2022/12/15 20:15
 **/
public class GroupBy implements Node {

    private final List columns = new LinkedList<>();

    private GroupBy(Column... cols) {
        this.columns.addAll(Arrays.asList(cols));
    }

    public static GroupBy of(Column col) {
        return new GroupBy(col);
    }

    public static GroupBy ofEmpty() {
        return new GroupBy();
    }

    public List columns() {
        return this.columns;
    }

    public void add(Column col) {
        this.columns.add(col);
    }
}