Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18680#discussion_r128503537
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ArrowColumnVector.java
---
@@ -0,0 +1,545 @@
+/*
+ * 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.spark.sql.execution.vectorized;
+
+import org.apache.arrow.vector.*;
+import org.apache.arrow.vector.complex.*;
+import org.apache.arrow.vector.holders.NullableVarCharHolder;
+
+import org.apache.spark.memory.MemoryMode;
+import org.apache.spark.sql.execution.arrow.ArrowUtils;
+import org.apache.spark.sql.types.*;
+import org.apache.spark.unsafe.types.UTF8String;
+
+/**
+ * A column backed by Apache Arrow.
+ */
+public final class ArrowColumnVector extends ReadOnlyColumnVector {
+
+ private final ArrowVectorAccessor accessor;
+
+ @Override
+ public long nullsNativeAddress() {
+ throw new RuntimeException("Cannot get native address for arrow
column");
+ }
+
+ @Override
+ public long valuesNativeAddress() {
+ throw new RuntimeException("Cannot get native address for arrow
column");
+ }
+
+ @Override
+ public void close() {
+ if (childColumns != null) {
+ for (int i = 0; i < childColumns.length; i++) {
+ childColumns[i].close();
+ }
+ }
+ accessor.close();
+ }
+
+ //
+ // APIs dealing with nulls
+ //
+
+ @Override
+ public boolean isNullAt(int rowId) {
+ return accessor.isNullAt(rowId);
+ }
+
+ //
+ // APIs dealing with Booleans
+ //
+
+ @Override
+ public boolean getBoolean(int rowId) {
+ return accessor.getBoolean(rowId);
+ }
+
+ @Override
+ public boolean[] getBooleans(int rowId, int count) {
+ boolean[] array = new boolean[count];
+ for (int i = 0; i < count; ++i) {
+ array[i] = accessor.getBoolean(rowId + i);
--- End diff --
I checked Arrow's API docs. I didn't find batch read API.
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