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[core] Introduce bitmap index record reader (#4502)
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.../src/main/java/org/apache/paimon/fileindex/bitmap/ApplyBitmapIndexFileRecordIterator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.paimon.fileindex.bitmap; | ||
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| import org.apache.paimon.data.InternalRow; | ||
| import org.apache.paimon.fs.Path; | ||
| import org.apache.paimon.reader.FileRecordIterator; | ||
| import org.apache.paimon.utils.RoaringBitmap32; | ||
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| import javax.annotation.Nullable; | ||
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| import java.io.IOException; | ||
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| /** | ||
| * A {@link FileRecordIterator} wraps a {@link FileRecordIterator} and {@link BitmapIndexResult}. | ||
| */ | ||
| public class ApplyBitmapIndexFileRecordIterator implements FileRecordIterator<InternalRow> { | ||
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| private final FileRecordIterator<InternalRow> iterator; | ||
| private final RoaringBitmap32 bitmap; | ||
| private final int last; | ||
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| public ApplyBitmapIndexFileRecordIterator( | ||
| FileRecordIterator<InternalRow> iterator, BitmapIndexResult fileIndexResult) { | ||
| this.iterator = iterator; | ||
| this.bitmap = fileIndexResult.get(); | ||
| this.last = bitmap.last(); | ||
| } | ||
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| @Override | ||
| public long returnedPosition() { | ||
| return iterator.returnedPosition(); | ||
| } | ||
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| @Override | ||
| public Path filePath() { | ||
| return iterator.filePath(); | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public InternalRow next() throws IOException { | ||
| while (true) { | ||
| InternalRow next = iterator.next(); | ||
| if (next == null) { | ||
| return null; | ||
| } | ||
| int position = (int) returnedPosition(); | ||
| if (position > last) { | ||
| return null; | ||
| } | ||
| if (bitmap.contains(position)) { | ||
| return next; | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public void releaseBatch() { | ||
| iterator.releaseBatch(); | ||
| } | ||
| } |
64 changes: 64 additions & 0 deletions
64
...common/src/main/java/org/apache/paimon/fileindex/bitmap/ApplyBitmapIndexRecordReader.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.paimon.fileindex.bitmap; | ||
|
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| import org.apache.paimon.data.InternalRow; | ||
| import org.apache.paimon.reader.FileRecordIterator; | ||
| import org.apache.paimon.reader.RecordReader; | ||
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| import javax.annotation.Nullable; | ||
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| import java.io.IOException; | ||
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| import static org.apache.paimon.utils.Preconditions.checkArgument; | ||
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| /** A {@link RecordReader} which apply {@link BitmapIndexResult} to filter record. */ | ||
| public class ApplyBitmapIndexRecordReader implements RecordReader<InternalRow> { | ||
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| private final RecordReader<InternalRow> reader; | ||
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| private final BitmapIndexResult fileIndexResult; | ||
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| public ApplyBitmapIndexRecordReader( | ||
| RecordReader<InternalRow> reader, BitmapIndexResult fileIndexResult) { | ||
| this.reader = reader; | ||
| this.fileIndexResult = fileIndexResult; | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public RecordIterator<InternalRow> readBatch() throws IOException { | ||
| RecordIterator<InternalRow> batch = reader.readBatch(); | ||
| if (batch == null) { | ||
| return null; | ||
| } | ||
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| checkArgument( | ||
| batch instanceof FileRecordIterator, | ||
| "There is a bug, RecordIterator in ApplyBitmapIndexRecordReader must be FileRecordIterator"); | ||
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| return new ApplyBitmapIndexFileRecordIterator( | ||
| (FileRecordIterator<InternalRow>) batch, fileIndexResult); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| reader.close(); | ||
| } | ||
| } |
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