forked from dremio/arrow
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
7 changed files
with
118 additions
and
27 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
69 changes: 69 additions & 0 deletions
69
java/gandiva/src/main/java/org/apache/arrow/gandiva/evaluator/ListVectorExpander.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| * 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.arrow.gandiva.evaluator; | ||
|
|
||
| import org.apache.arrow.vector.complex.ListVector; | ||
|
|
||
| /** | ||
| * This class provides the functionality to expand output vectors using a callback mechanism from | ||
| * gandiva. | ||
| */ | ||
| public class ListVectorExpander { | ||
| private final ListVector[] vectors; | ||
|
|
||
| public ListVectorExpander(ListVector[] vectors) { | ||
| this.vectors = vectors; | ||
| } | ||
|
|
||
| /** | ||
| * Result of vector expansion. | ||
| */ | ||
| public static class ExpandResult { | ||
| public long address; | ||
| public long capacity; | ||
|
|
||
| public ExpandResult(long address, long capacity) { | ||
| this.address = address; | ||
| this.capacity = capacity; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Expand vector at specified index. This is used as a back call from jni, and is only | ||
| * relevant for ListVectors. | ||
| * | ||
| * @param index index of buffer in the list passed to jni. | ||
| * @param toCapacity the size to which the buffer should be expanded to. | ||
| * | ||
| * @return address and size of the buffer after expansion. | ||
| */ | ||
| public ExpandResult expandOutputVectorAtIndex(int index, long toCapacity) { | ||
| if (index >= vectors.length || vectors[index] == null) { | ||
| throw new IllegalArgumentException("invalid index " + index); | ||
| } | ||
|
|
||
| ListVector vector = vectors[index]; | ||
| while (vector.getDataVector().getFieldBuffers().get(0).capacity() < toCapacity) { | ||
| vector.reAlloc(); | ||
| } | ||
| return new ExpandResult( | ||
| vector.getDataVector().getFieldBuffers().get(0).memoryAddress(), | ||
| vector.getDataVector().getFieldBuffers().get(0).capacity()); | ||
| } | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters