| /* |
| * 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.segment.serde; |
| |
| import com.google.common.base.Supplier; |
| import org.apache.druid.collections.bitmap.BitmapFactory; |
| import org.apache.druid.collections.bitmap.ImmutableBitmap; |
| import org.apache.druid.segment.column.BitmapIndex; |
| import org.apache.druid.segment.data.GenericIndexed; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| */ |
| public class BitmapIndexColumnPartSupplier implements Supplier<BitmapIndex> |
| { |
| private final BitmapFactory bitmapFactory; |
| private final GenericIndexed<ImmutableBitmap> bitmaps; |
| private final GenericIndexed<String> dictionary; |
| |
| public BitmapIndexColumnPartSupplier( |
| BitmapFactory bitmapFactory, |
| GenericIndexed<ImmutableBitmap> bitmaps, |
| GenericIndexed<String> dictionary |
| ) |
| { |
| this.bitmapFactory = bitmapFactory; |
| this.bitmaps = bitmaps; |
| this.dictionary = dictionary; |
| } |
| |
| @Override |
| public BitmapIndex get() |
| { |
| return new BitmapIndex() |
| { |
| @Override |
| public int getCardinality() |
| { |
| return dictionary.size(); |
| } |
| |
| @Override |
| public String getValue(int index) |
| { |
| return dictionary.get(index); |
| } |
| |
| @Override |
| public boolean hasNulls() |
| { |
| return dictionary.indexOf(null) >= 0; |
| } |
| |
| @Override |
| public BitmapFactory getBitmapFactory() |
| { |
| return bitmapFactory; |
| } |
| |
| @Override |
| public int getIndex(@Nullable String value) |
| { |
| // GenericIndexed.indexOf satisfies contract needed by BitmapIndex.indexOf |
| return dictionary.indexOf(value); |
| } |
| |
| @Override |
| public ImmutableBitmap getBitmap(int idx) |
| { |
| if (idx < 0) { |
| return bitmapFactory.makeEmptyImmutableBitmap(); |
| } |
| |
| final ImmutableBitmap bitmap = bitmaps.get(idx); |
| return bitmap == null ? bitmapFactory.makeEmptyImmutableBitmap() : bitmap; |
| } |
| }; |
| } |
| } |