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ASF GitHub Bot logged work on BEAM-7274: ---------------------------------------- Author: ASF GitHub Bot Created on: 02/Oct/19 00:38 Start Date: 02/Oct/19 00:38 Worklog Time Spent: 10m Work Description: TheNeuralBit commented on pull request #8690: [BEAM-7274] Implement the Protobuf schema provider URL: https://github.com/apache/beam/pull/8690#discussion_r330330163 ########## File path: sdks/java/extensions/protobuf/src/main/java/org/apache/beam/sdk/extensions/protobuf/ProtoSchema.java ########## @@ -0,0 +1,563 @@ +/* + * 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.beam.sdk.extensions.protobuf; + +import com.google.protobuf.DescriptorProtos; +import com.google.protobuf.Descriptors; +import com.google.protobuf.DynamicMessage; +import com.google.protobuf.Message; +import com.google.protobuf.UnknownFieldSet; +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.io.Serializable; +import java.lang.reflect.Constructor; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.math.BigInteger; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.UUID; +import java.util.stream.Collectors; +import org.apache.beam.sdk.annotations.Experimental; +import org.apache.beam.sdk.schemas.Factory; +import org.apache.beam.sdk.schemas.FieldValueGetter; +import org.apache.beam.sdk.schemas.Schema; +import org.apache.beam.sdk.schemas.SchemaCoder; +import org.apache.beam.sdk.transforms.SerializableFunction; +import org.apache.beam.sdk.values.Row; +import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; + +/** + * ProtoSchema is a top level anchor point. It makes sure it can recreate the complete schema and + * overlay with just the Message raw type or if it's a DynamicMessage with the serialised + * Descriptor. + * + * <p>ProtoDomain is an integral part of a ProtoSchema, it it contains all the information needed to + * iterpret and reconstruct messages. + * + * <ul> + * <li>Protobuf oneOf fields are mapped to nullable fields and flattened into the parent row. + * <li>Protobuf primitives are mapped to it's nullable counter part. + * <li>Protobuf maps are mapped to nullable maps, where empty maps are mapped to the null value. + * <li>Protobuf repeatables are mapped to nullable arrays, where empty arrays are mapped to the + * null value. + * <li>Protobuf enums are mapped to non-nullable string values. + * <li>Enum map to their string representation Review comment: nit: Are these two lines saying the same thing? ---------------------------------------------------------------- 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 Issue Time Tracking ------------------- Worklog Id: (was: 321645) > Protobuf Beam Schema support > ---------------------------- > > Key: BEAM-7274 > URL: https://issues.apache.org/jira/browse/BEAM-7274 > Project: Beam > Issue Type: Improvement > Components: sdk-java-core > Reporter: Alex Van Boxel > Assignee: Alex Van Boxel > Priority: Minor > Fix For: 2.17.0 > > Time Spent: 7h 20m > Remaining Estimate: 0h > > Add support for the new Beam Schema to the Protobuf extension. -- This message was sent by Atlassian Jira (v8.3.4#803005)