com.metamx.druid.query.segment.LegacySegmentSpec.java Source code

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Here is the source code for com.metamx.druid.query.segment.LegacySegmentSpec.java

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/*
 * Druid - a distributed column store.
 * Copyright (C) 2012  Metamarkets Group Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package com.metamx.druid.query.segment;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.metamx.common.IAE;

import org.joda.time.Interval;

import java.util.Arrays;
import java.util.List;
import java.util.Map;

/**
 */
public class LegacySegmentSpec extends MultipleIntervalSegmentSpec {
    private static List<Interval> convertValue(Object intervals) {
        final List<?> intervalStringList;
        if (intervals instanceof String) {
            intervalStringList = Arrays.asList((((String) intervals).split(",")));
        } else if (intervals instanceof Map) {
            intervalStringList = (List) ((Map) intervals).get("intervals");
        } else if (intervals instanceof List) {
            intervalStringList = (List) intervals;
        } else {
            throw new IAE("Unknown type[%s] for intervals[%s]", intervals.getClass(), intervals);
        }

        return Lists.transform(intervalStringList, new Function<Object, Interval>() {
            @Override
            public Interval apply(Object input) {
                return new Interval(input);
            }
        });
    }

    @JsonCreator
    public LegacySegmentSpec(Object intervals) {
        super(convertValue(intervals));
    }
}