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Optimize lookup table in join operator
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65 changes: 65 additions & 0 deletions
65
...runtime/src/main/java/org/apache/pinot/query/runtime/operator/join/DoubleLookupTable.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /** | ||
| * 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.pinot.query.runtime.operator.join; | ||
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| import it.unimi.dsi.fastutil.doubles.Double2ObjectMap; | ||
| import it.unimi.dsi.fastutil.doubles.Double2ObjectOpenHashMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import javax.annotation.Nullable; | ||
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| /** | ||
| * The {@code DoubleLookupTable} is a lookup table for double keys. | ||
| */ | ||
| @SuppressWarnings("unchecked") | ||
| public class DoubleLookupTable extends LookupTable { | ||
| private final Double2ObjectOpenHashMap<Object> _lookupTable = new Double2ObjectOpenHashMap<>(INITIAL_CAPACITY); | ||
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| @Override | ||
| public void addRow(Object key, Object[] row) { | ||
| _lookupTable.compute((double) key, (k, v) -> calculateValue(row, v)); | ||
| } | ||
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| @Override | ||
| public void finish() { | ||
| if (!_keysUnique) { | ||
| for (Double2ObjectMap.Entry<Object> entry : _lookupTable.double2ObjectEntrySet()) { | ||
| convertValueToList(entry); | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public boolean containsKey(Object key) { | ||
| return _lookupTable.containsKey((double) key); | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public Object[] lookup(Object key) { | ||
| return (Object[]) _lookupTable.get((double) key); | ||
| } | ||
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| @SuppressWarnings("rawtypes") | ||
| @Override | ||
| public Set<Map.Entry> entrySet() { | ||
| return (Set) _lookupTable.double2ObjectEntrySet(); | ||
| } | ||
| } |
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