io.druid.segment.MMappedIndex Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of druid-processing Show documentation
A module that is everything required to understands Druid Segments
There is a newer version: 0.12.3
/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets licenses this file
 * to you 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;

import com.metamx.collections.bitmap.ImmutableBitmap;
import com.metamx.collections.spatial.ImmutableRTree;
import com.metamx.common.io.smoosh.SmooshedFileMapper;
import com.metamx.common.logger.Logger;
import io.druid.segment.data.CompressedLongsIndexedSupplier;
import io.druid.segment.data.GenericIndexed;
import io.druid.segment.data.VSizeIndexed;
import org.joda.time.Interval;

import java.io.IOException;
import java.util.Map;

/**
 */
public class MMappedIndex
{
  private static final Logger log = new Logger(MMappedIndex.class);

  final GenericIndexed availableDimensions;
  final GenericIndexed availableMetrics;
  final Interval dataInterval;
  final CompressedLongsIndexedSupplier timestamps;
  final Map metrics;
  final Map> dimValueLookups;
  final Map dimColumns;
  final Map> invertedIndexes;
  final Map spatialIndexes;
  final SmooshedFileMapper fileMapper;

  public MMappedIndex(
      GenericIndexed availableDimensions,
      GenericIndexed availableMetrics,
      Interval dataInterval,
      CompressedLongsIndexedSupplier timestamps,
      Map metrics,
      Map> dimValueLookups,
      Map dimColumns,
      Map> invertedIndexes,
      Map spatialIndexes,
      SmooshedFileMapper fileMapper
  )
  {
    this.availableDimensions = availableDimensions;
    this.availableMetrics = availableMetrics;
    this.dataInterval = dataInterval;
    this.timestamps = timestamps;
    this.metrics = metrics;
    this.dimValueLookups = dimValueLookups;
    this.dimColumns = dimColumns;
    this.invertedIndexes = invertedIndexes;
    this.spatialIndexes = spatialIndexes;
    this.fileMapper = fileMapper;
  }

  public CompressedLongsIndexedSupplier getTimestamps()
  {
    return timestamps;
  }

  public GenericIndexed getAvailableDimensions()
  {
    return availableDimensions;
  }

  public GenericIndexed getAvailableMetrics()
  {
    return availableMetrics;
  }

  public Map getMetrics()
  {
    return metrics;
  }

  public Interval getDataInterval()
  {
    return dataInterval;
  }

  public MetricHolder getMetricHolder(String metric)
  {
    final MetricHolder retVal = metrics.get(metric);

    if (retVal == null) {
      return null;
    }

    return retVal;
  }

  public GenericIndexed getDimValueLookup(String dimension)
  {
    return dimValueLookups.get(dimension);
  }

  public VSizeIndexed getDimColumn(String dimension)
  {
    return dimColumns.get(dimension);
  }

  public Map> getBitmapIndexes()
  {
    return invertedIndexes;
  }

  public Map getSpatialIndexes()
  {
    return spatialIndexes;
  }

  public SmooshedFileMapper getFileMapper()
  {
    return fileMapper;
  }

  public void close() throws IOException
  {
    if (fileMapper != null) {
      fileMapper.close();
    }
  }
}