mbeckerle commented on code in PR #2836: URL: https://github.com/apache/drill/pull/2836#discussion_r1461099077
########## contrib/format-daffodil/src/main/java/org/apache/drill/exec/store/daffodil/schema/DrillDaffodilSchemaVisitor.java: ########## @@ -0,0 +1,229 @@ +/* + * 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.drill.exec.store.daffodil.schema; + +import org.apache.daffodil.runtime1.api.ChoiceMetadata; +import org.apache.daffodil.runtime1.api.ComplexElementMetadata; +import org.apache.daffodil.runtime1.api.ElementMetadata; +import org.apache.daffodil.runtime1.api.InfosetSimpleElement; +import org.apache.daffodil.runtime1.api.MetadataHandler; +import org.apache.daffodil.runtime1.api.SequenceMetadata; +import org.apache.daffodil.runtime1.api.SimpleElementMetadata; +import org.apache.drill.common.types.TypeProtos.MinorType; +import org.apache.drill.exec.record.metadata.MapBuilder; +import org.apache.drill.exec.record.metadata.SchemaBuilder; +import org.apache.drill.exec.record.metadata.TupleMetadata; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.Stack; + +/** + * This class transforms a DFDL/Daffodil schema into a Drill Schema. + */ +public class DrillDaffodilSchemaVisitor extends MetadataHandler { + private static final Logger logger = LoggerFactory.getLogger(DrillDaffodilSchemaVisitor.class); + /** + * Unfortunately, SchemaBuilder and MapBuilder, while similar, do not share a base class so we + * have a stack of MapBuilders, and when empty we use the SchemaBuilder Review Comment: This is fixed in the latest commit. Created MapBuilderLike interface shared by SchemaBuilder and MapBuilder. I only populated it with the methods I needed. The corresponding problem doesn't really occur in the rowWriter area as tupleWriter is the common underlying class used. -- 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. To unsubscribe, e-mail: dev-unsubscr...@drill.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
