| /* |
| * 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.runners.spark.structuredstreaming.translation.helpers; |
| |
| import org.apache.spark.sql.types.DataTypes; |
| import org.apache.spark.sql.types.Metadata; |
| import org.apache.spark.sql.types.StructField; |
| import org.apache.spark.sql.types.StructType; |
| |
| /** A {@link SchemaHelpers} for the Spark Batch Runner. */ |
| public class SchemaHelpers { |
| private static final StructType BINARY_SCHEMA = |
| new StructType( |
| new StructField[] { |
| StructField.apply("binaryStructField", DataTypes.BinaryType, true, Metadata.empty()) |
| }); |
| |
| public static StructType binarySchema() { |
| // we use a binary schema for now because: |
| // using a empty schema raises a indexOutOfBoundsException |
| // using a NullType schema stores null in the elements |
| return BINARY_SCHEMA; |
| } |
| } |