io.druid.segment.data.BitmapCompressedIndexedInts Maven / Gradle / Ivy
/*
* 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.data;
import com.google.common.collect.Ordering;
import io.druid.collections.bitmap.ImmutableBitmap;
import io.druid.query.monomorphicprocessing.RuntimeShapeInspector;
import io.druid.segment.IntIteratorUtils;
import it.unimi.dsi.fastutil.ints.IntIterator;
import javax.annotation.Nullable;
import java.io.IOException;
/**
*/
public class BitmapCompressedIndexedInts implements IndexedInts, Comparable
{
private static final Ordering COMPARATOR = new Ordering()
{
@Override
public int compare(
ImmutableBitmap set, ImmutableBitmap set1
)
{
if (set.isEmpty() && set1.isEmpty()) {
return 0;
}
if (set.isEmpty()) {
return -1;
}
if (set1.isEmpty()) {
return 1;
}
return set.compareTo(set1);
}
}.nullsFirst();
private final ImmutableBitmap immutableBitmap;
public BitmapCompressedIndexedInts(ImmutableBitmap immutableBitmap)
{
this.immutableBitmap = immutableBitmap;
}
@Override
public int compareTo(@Nullable ImmutableBitmap otherBitmap)
{
return COMPARATOR.compare(immutableBitmap, otherBitmap);
}
@Override
public int size()
{
return immutableBitmap.size();
}
@Override
public int get(int index)
{
throw new UnsupportedOperationException("This is really slow, so it's just not supported.");
}
public ImmutableBitmap getImmutableBitmap()
{
return immutableBitmap;
}
@Override
public IntIterator iterator()
{
return IntIteratorUtils.fromRoaringBitmapIntIterator(immutableBitmap.iterator());
}
@Override
public void close() throws IOException
{
}
@Override
public void inspectRuntimeShape(RuntimeShapeInspector inspector)
{
inspector.visit("immutableBitmap", immutableBitmap);
}
}