com.espertech.esper.epl.agg.service.common.AggregationGroupByRollupDesc Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of esper Show documentation

Complex event processing and event series analysis component

The newest version!

/*
 ***************************************************************************************
 *  Copyright (C) 2006 EsperTech, Inc. All rights reserved.                            *
 *  http://www.espertech.com/esper                                                     *
 *  http://www.espertech.com                                                           *
 *  ---------------------------------------------------------------------------------- *
 *  The software in this package is published under the terms of the GPL license       *
 *  a copy of which has been included with this distribution in the license.txt file.  *
 ***************************************************************************************
 */
package com.espertech.esper.epl.agg.service.common;

import java.util.ArrayList;
import java.util.List;

public class AggregationGroupByRollupDesc {
    private final AggregationGroupByRollupLevel[] levels;
    private final int numLevelsAggregation;

    public AggregationGroupByRollupDesc(AggregationGroupByRollupLevel[] levels) {
        this.levels = levels;

        int count = 0;
        for (AggregationGroupByRollupLevel level : levels) {
            if (!level.isAggregationTop()) {
                count++;
            }
        }
        numLevelsAggregation = count;
    }

    public static AggregationGroupByRollupDesc make(int[][] indexes) {
        List levels = new ArrayList();
        int countOffset = 0;
        int countNumber = -1;
        for (int[] mki : indexes) {
            countNumber++;
            if (mki.length == 0) {
                levels.add(new AggregationGroupByRollupLevel(countNumber, -1, null));
            } else {
                levels.add(new AggregationGroupByRollupLevel(countNumber, countOffset, mki));
                countOffset++;
            }
        }
        AggregationGroupByRollupLevel[] levelsarr = levels.toArray(new AggregationGroupByRollupLevel[levels.size()]);
        return new AggregationGroupByRollupDesc(levelsarr);
    }

    public AggregationGroupByRollupLevel[] getLevels() {
        return levels;
    }

    public int getNumLevelsAggregation() {
        return numLevelsAggregation;
    }

    public int getNumLevels() {
        return levels.length;
    }
}