io.druid.segment.indexing.granularity.UniformGranularitySpec.java Source code

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Here is the source code for io.druid.segment.indexing.granularity.UniformGranularitySpec.java

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * 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.druid.segment.indexing.granularity;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.metamx.common.Granularity;
import io.druid.granularity.QueryGranularity;
import org.joda.time.DateTime;
import org.joda.time.Interval;

import java.util.List;
import java.util.SortedSet;

public class UniformGranularitySpec implements GranularitySpec {
    private static final Granularity DEFAULT_SEGMENT_GRANULARITY = Granularity.DAY;
    private static final QueryGranularity DEFAULT_QUERY_GRANULARITY = QueryGranularity.NONE;

    private final Granularity segmentGranularity;
    private final QueryGranularity queryGranularity;
    private final List<Interval> inputIntervals;
    private final ArbitraryGranularitySpec wrappedSpec;

    @JsonCreator
    public UniformGranularitySpec(@JsonProperty("segmentGranularity") Granularity segmentGranularity,
            @JsonProperty("queryGranularity") QueryGranularity queryGranularity,
            @JsonProperty("intervals") List<Interval> inputIntervals

    ) {
        this.segmentGranularity = segmentGranularity == null ? DEFAULT_SEGMENT_GRANULARITY : segmentGranularity;
        this.queryGranularity = queryGranularity == null ? DEFAULT_QUERY_GRANULARITY : queryGranularity;

        if (inputIntervals != null) {
            List<Interval> granularIntervals = Lists.newArrayList();
            for (Interval inputInterval : inputIntervals) {
                Iterables.addAll(granularIntervals, this.segmentGranularity.getIterable(inputInterval));
            }
            this.inputIntervals = ImmutableList.copyOf(inputIntervals);
            this.wrappedSpec = new ArbitraryGranularitySpec(queryGranularity, granularIntervals);
        } else {
            this.inputIntervals = null;
            this.wrappedSpec = null;
        }
    }

    @Override
    public Optional<SortedSet<Interval>> bucketIntervals() {
        if (wrappedSpec == null) {
            return Optional.absent();
        } else {
            return wrappedSpec.bucketIntervals();
        }
    }

    @Override
    public Optional<Interval> bucketInterval(DateTime dt) {
        return wrappedSpec.bucketInterval(dt);
    }

    @Override
    @JsonProperty("segmentGranularity")
    public Granularity getSegmentGranularity() {
        return segmentGranularity;
    }

    @Override
    @JsonProperty("queryGranularity")
    public QueryGranularity getQueryGranularity() {
        return queryGranularity;
    }

    @JsonProperty("intervals")
    public Optional<List<Interval>> getIntervals() {
        return Optional.fromNullable(inputIntervals);
    }
}