| /* |
| * 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.sql.meta.provider.test; |
| |
| import static java.util.stream.Collectors.toList; |
| import static org.apache.beam.sdk.schemas.Schema.toSchema; |
| import static org.apache.beam.sdk.values.Row.toRow; |
| |
| import java.util.List; |
| import java.util.stream.Stream; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.schemas.Schema; |
| import org.apache.beam.sdk.schemas.Schema.FieldType; |
| import org.apache.beam.sdk.values.Row; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Lists; |
| |
| /** Utility functions for mock classes. */ |
| @Experimental |
| public class TestTableUtils { |
| |
| /** |
| * Create a RowsBuilder with the specified row type info. |
| * |
| * <p>For example: |
| * |
| * <pre>{@code |
| * TestUtils.RowsBuilder.of( |
| * Types.INTEGER, "order_id", |
| * Types.INTEGER, "sum_site_id", |
| * Types.VARCHAR, "buyer" |
| * ) |
| * }</pre> |
| * |
| * @param args pairs of column type and column names. |
| */ |
| public static Schema buildBeamSqlSchema(Object... args) { |
| return Stream.iterate(0, i -> i + 2) |
| .limit(args.length / 2) |
| .map(i -> toRecordField(args, i)) |
| .collect(toSchema()); |
| } |
| |
| // TODO: support nested. |
| public static Schema.Field toRecordField(Object[] args, int i) { |
| return Schema.Field.of((String) args[i + 1], (FieldType) args[i]); |
| } |
| |
| /** |
| * Convenient way to build a {@code BeamSqlRow}s. |
| * |
| * <p>e.g. |
| * |
| * <pre>{@code |
| * buildRows( |
| * schema, |
| * 1, 1, 1, // the first row |
| * 2, 2, 2, // the second row |
| * ... |
| * ) |
| * }</pre> |
| */ |
| public static List<Row> buildRows(Schema type, List<?> rowsValues) { |
| return Lists.partition(rowsValues, type.getFieldCount()).stream() |
| .map(values -> values.stream().collect(toRow(type))) |
| .collect(toList()); |
| } |
| } |