rdblue commented on a change in pull request #828: URL: https://github.com/apache/incubator-iceberg/pull/828#discussion_r420291880
########## File path: spark/src/main/java/org/apache/iceberg/spark/data/vectorized/IcebergArrowColumnVector.java ########## @@ -0,0 +1,153 @@ +/* + * 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.iceberg.spark.data.vectorized; + +import org.apache.iceberg.arrow.vectorized.NullabilityHolder; +import org.apache.iceberg.arrow.vectorized.VectorHolder; +import org.apache.iceberg.spark.SparkSchemaUtil; +import org.apache.parquet.Preconditions; +import org.apache.spark.sql.types.Decimal; +import org.apache.spark.sql.vectorized.ArrowColumnVector; +import org.apache.spark.sql.vectorized.ColumnVector; +import org.apache.spark.sql.vectorized.ColumnarArray; +import org.apache.spark.sql.vectorized.ColumnarMap; +import org.apache.spark.unsafe.types.UTF8String; + +/** + * Implementation of Spark's {@link ColumnVector} interface. The code for this class is heavily inspired from Spark's + * {@link ArrowColumnVector} The main difference is in how nullability checks are made in this class by relying on + * {@link NullabilityHolder} instead of the validity vector in the Arrow vector. + */ +public class IcebergArrowColumnVector extends ColumnVector { + + private final ArrowVectorAccessor accessor; + private final NullabilityHolder nullabilityHolder; + + public IcebergArrowColumnVector(VectorHolder holder) { + super(SparkSchemaUtil.convert(holder.icebergType())); + this.nullabilityHolder = holder.nullabilityHolder(); + this.accessor = ArrowVectorAccessors.getVectorAccessor(holder); + } + + @Override + public void close() { + accessor.close(); + } + + @Override + public boolean hasNull() { + return nullabilityHolder.hasNulls(); + } + + @Override + public int numNulls() { + return nullabilityHolder.numNulls(); + } + + @Override + public boolean isNullAt(int rowId) { + return nullabilityHolder.isNullAt(rowId) == 1; + } + + @Override + public boolean getBoolean(int rowId) { + return accessor.getBoolean(rowId); + } + + @Override + public byte getByte(int rowId) { + throw new UnsupportedOperationException("Unsupported type - byte"); + } + + @Override + public short getShort(int rowId) { + throw new UnsupportedOperationException("Unsupported type - short"); + } + + @Override + public int getInt(int rowId) { + return accessor.getInt(rowId); + } + + @Override + public long getLong(int rowId) { + return accessor.getLong(rowId); + } + + @Override + public float getFloat(int rowId) { + return accessor.getFloat(rowId); + } + + @Override + public double getDouble(int rowId) { + return accessor.getDouble(rowId); + } + + @Override + public ColumnarArray getArray(int rowId) { + if (isNullAt(rowId)) { + return null; + } + return accessor.getArray(rowId); + } + + @Override + public ColumnarMap getMap(int rowId) { + throw new UnsupportedOperationException("Unsupported type - map"); + } + + @Override + public Decimal getDecimal(int rowId, int precision, int scale) { + if (isNullAt(rowId)) { + return null; + } + return accessor.getDecimal(rowId, precision, scale); + } + + @Override + public UTF8String getUTF8String(int rowId) { + if (isNullAt(rowId)) { Review comment: But doesn't Spark already check nullability before calling this method? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
