martin-traverse commented on code in PR #638: URL: https://github.com/apache/arrow-java/pull/638#discussion_r2010645566
########## adapter/avro/src/main/java/org/apache/arrow/adapter/avro/ArrowToAvroUtils.java: ########## @@ -0,0 +1,729 @@ +/* + * 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.adapter.avro; + +import java.util.ArrayList; +import java.util.List; +import org.apache.arrow.adapter.avro.producers.AvroBigIntProducer; +import org.apache.arrow.adapter.avro.producers.AvroBooleanProducer; +import org.apache.arrow.adapter.avro.producers.AvroBytesProducer; +import org.apache.arrow.adapter.avro.producers.AvroDenseUnionProducer; +import org.apache.arrow.adapter.avro.producers.AvroFixedSizeBinaryProducer; +import org.apache.arrow.adapter.avro.producers.AvroFixedSizeListProducer; +import org.apache.arrow.adapter.avro.producers.AvroFloat2Producer; +import org.apache.arrow.adapter.avro.producers.AvroFloat4Producer; +import org.apache.arrow.adapter.avro.producers.AvroFloat8Producer; +import org.apache.arrow.adapter.avro.producers.AvroIntProducer; +import org.apache.arrow.adapter.avro.producers.AvroListProducer; +import org.apache.arrow.adapter.avro.producers.AvroMapProducer; +import org.apache.arrow.adapter.avro.producers.AvroNullProducer; +import org.apache.arrow.adapter.avro.producers.AvroNullableProducer; +import org.apache.arrow.adapter.avro.producers.AvroSmallIntProducer; +import org.apache.arrow.adapter.avro.producers.AvroStringProducer; +import org.apache.arrow.adapter.avro.producers.AvroStructProducer; +import org.apache.arrow.adapter.avro.producers.AvroTinyIntProducer; +import org.apache.arrow.adapter.avro.producers.AvroUint1Producer; +import org.apache.arrow.adapter.avro.producers.AvroUint2Producer; +import org.apache.arrow.adapter.avro.producers.AvroUint4Producer; +import org.apache.arrow.adapter.avro.producers.AvroUint8Producer; +import org.apache.arrow.adapter.avro.producers.AvroUnionProducer; +import org.apache.arrow.adapter.avro.producers.BaseAvroProducer; +import org.apache.arrow.adapter.avro.producers.CompositeAvroProducer; +import org.apache.arrow.adapter.avro.producers.Producer; +import org.apache.arrow.adapter.avro.producers.logical.AvroDateDayProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroDateMilliProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroDecimal256Producer; +import org.apache.arrow.adapter.avro.producers.logical.AvroDecimalProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimeMicroProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimeMilliProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimeNanoProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimeSecProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampMicroProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampMicroTzProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampMilliProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampMilliTzProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampNanoProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampNanoTzProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampSecProducer; +import org.apache.arrow.adapter.avro.producers.logical.AvroTimestampSecTzProducer; +import org.apache.arrow.util.Preconditions; +import org.apache.arrow.vector.BigIntVector; +import org.apache.arrow.vector.BitVector; +import org.apache.arrow.vector.DateDayVector; +import org.apache.arrow.vector.DateMilliVector; +import org.apache.arrow.vector.Decimal256Vector; +import org.apache.arrow.vector.DecimalVector; +import org.apache.arrow.vector.FieldVector; +import org.apache.arrow.vector.FixedSizeBinaryVector; +import org.apache.arrow.vector.Float2Vector; +import org.apache.arrow.vector.Float4Vector; +import org.apache.arrow.vector.Float8Vector; +import org.apache.arrow.vector.IntVector; +import org.apache.arrow.vector.NullVector; +import org.apache.arrow.vector.SmallIntVector; +import org.apache.arrow.vector.TimeMicroVector; +import org.apache.arrow.vector.TimeMilliVector; +import org.apache.arrow.vector.TimeNanoVector; +import org.apache.arrow.vector.TimeSecVector; +import org.apache.arrow.vector.TimeStampMicroTZVector; +import org.apache.arrow.vector.TimeStampMicroVector; +import org.apache.arrow.vector.TimeStampMilliTZVector; +import org.apache.arrow.vector.TimeStampMilliVector; +import org.apache.arrow.vector.TimeStampNanoTZVector; +import org.apache.arrow.vector.TimeStampNanoVector; +import org.apache.arrow.vector.TimeStampSecTZVector; +import org.apache.arrow.vector.TimeStampSecVector; +import org.apache.arrow.vector.TinyIntVector; +import org.apache.arrow.vector.UInt1Vector; +import org.apache.arrow.vector.UInt2Vector; +import org.apache.arrow.vector.UInt4Vector; +import org.apache.arrow.vector.UInt8Vector; +import org.apache.arrow.vector.VarBinaryVector; +import org.apache.arrow.vector.VarCharVector; +import org.apache.arrow.vector.complex.DenseUnionVector; +import org.apache.arrow.vector.complex.FixedSizeListVector; +import org.apache.arrow.vector.complex.ListVector; +import org.apache.arrow.vector.complex.MapVector; +import org.apache.arrow.vector.complex.StructVector; +import org.apache.arrow.vector.complex.UnionVector; +import org.apache.arrow.vector.types.FloatingPointPrecision; +import org.apache.arrow.vector.types.TimeUnit; +import org.apache.arrow.vector.types.Types; +import org.apache.arrow.vector.types.pojo.ArrowType; +import org.apache.arrow.vector.types.pojo.Field; +import org.apache.avro.Schema; +import org.apache.avro.SchemaBuilder; + +public class ArrowToAvroUtils { + + public static final String GENERIC_RECORD_TYPE_NAME = "GenericRecord"; + + /** + * Create an Avro record schema for a given list of Arrow fields. + * + * <p>This method currently performs following type mapping for Avro data types to corresponding + * Arrow data types. + * + * <ul> + * <li>ArrowType.Null --> NULL Review Comment: I've converted the type mapping info into and HTML table - shows up nicely in the IDE auto complete :-) -- This is an automated message from the Apache Git Service. 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