diff --git a/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java b/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java new file mode 100644 index 000000000000..042e284cd527 --- /dev/null +++ b/sdks/java/io/csv/src/main/java/org/apache/beam/sdk/io/csv/CsvIOParseHelpers.java @@ -0,0 +1,55 @@ +/* + * 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.io.csv; + +import java.util.ArrayList; +import java.util.List; +import org.apache.beam.sdk.schemas.Schema; +import org.apache.commons.csv.CSVFormat; + +/** A utility class containing shared methods for parsing CSV records. */ +final class CsvIOParseHelpers { + /** Validate the {@link CSVFormat} for CSV record parsing requirements. */ + // TODO(https://github.com/apache/beam/issues/31712): implement method. + static void validate(CSVFormat format) {} + + /** + * Validate the {@link CSVFormat} in relation to the {@link Schema} for CSV record parsing + * requirements. + */ + // TODO(https://github.com/apache/beam/issues/31716): implement method. + static void validate(CSVFormat format, Schema schema) {} + + /** + * Build a {@link List} of {@link Schema.Field}s corresponding to the expected position of each + * field within the CSV record. + */ + // TODO(https://github.com/apache/beam/issues/31718): implement method. + static List mapFieldPositions(CSVFormat format, Schema schema) { + return new ArrayList<>(); + } + + /** + * Parse the given {@link String} cell of the CSV record based on the given field's {@link + * Schema.FieldType}. + */ + // TODO(https://github.com/apache/beam/issues/31719): implement method. + static Object parseCell(String cell, Schema.Field field) { + return ""; + } +}