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A module that is everything required to understands Druid Segments
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.druid.collections.bitmap;
import org.apache.druid.extendedset.intset.ImmutableConciseSet;
import org.roaringbitmap.IntIterator;
import org.roaringbitmap.PeekableIntIterator;
import java.nio.IntBuffer;
public class WrappedImmutableConciseBitmap implements ImmutableBitmap
{
/**
* Underlying bitmap.
*/
private final ImmutableConciseSet bitmap;
public WrappedImmutableConciseBitmap(IntBuffer buffer)
{
this.bitmap = new ImmutableConciseSet(buffer);
}
/**
* Wrap an ImmutableConciseSet
*
* @param immutableConciseSet bitmap to be wrapped
*/
public WrappedImmutableConciseBitmap(ImmutableConciseSet immutableConciseSet)
{
this.bitmap = immutableConciseSet;
}
public ImmutableConciseSet getBitmap()
{
return bitmap;
}
@Override
public boolean get(int value)
{
return bitmap.contains(value);
}
@Override
public byte[] toBytes()
{
return bitmap.toBytes();
}
@Override
public String toString()
{
return getClass().getSimpleName() + bitmap;
}
@Override
public IntIterator iterator()
{
return bitmap.iterator();
}
@Override
public PeekableIntIterator peekableIterator()
{
return new ConcisePeekableIteratorAdapter(bitmap.iterator());
}
@Override
public int size()
{
return bitmap.size();
}
@Override
public boolean isEmpty()
{
return bitmap.size() == 0;
}
@Override
public ImmutableBitmap intersection(ImmutableBitmap otherBitmap)
{
WrappedImmutableConciseBitmap other = (WrappedImmutableConciseBitmap) otherBitmap;
ImmutableConciseSet unwrappedOtherBitmap = other.bitmap;
return new WrappedImmutableConciseBitmap(ImmutableConciseSet.intersection(bitmap, unwrappedOtherBitmap));
}
}