content: /*
   * 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.
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  package org.apache.beam.sdk.extensions.sql.impl.rel;
  
  import java.util.Arrays;
  import java.util.List;
  import org.apache.beam.sdk.extensions.sql.TestUtils;
  import org.apache.beam.sdk.extensions.sql.meta.provider.test.TestBoundedTable;
  import org.apache.beam.sdk.schemas.Schema;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.Row;
  import org.junit.BeforeClass;
  import org.junit.Rule;
  import org.junit.Test;
  
  /** Test for {@code BeamUnnestRel}. */
  public class BeamUnnestRelTest extends BaseRelTest {
    @Rule public final TestPipeline pipeline = TestPipeline.create();
  
    @BeforeClass
    public static void prepare() {
      Schema rowSchema =
          Schema.builder().addStringField("stringField").addInt32Field("intField").build();
      List<Row> nestedRows =
          Arrays.asList(
              Row.withSchema(rowSchema).addValues("test1", 1).build(),
              Row.withSchema(rowSchema).addValues("test2", 2).build());
      registerTable(
          "NESTED",
          TestBoundedTable.of(
                  Schema.FieldType.STRING,
                  "user_id",
                  Schema.FieldType.array(Schema.FieldType.row(rowSchema)),
                  "nested")
              .addRows("1", nestedRows));
    }
  
    @Test
    public void testUnnest() {
      String sql =
          "SELECT user_id, p.intField, p.stringField FROM NESTED as t, unnest(t.nested) as p";
  
      PCollection<Row> rows = compilePipeline(sql, pipeline);
      PAssert.that(rows)
          .containsInAnyOrder(
              TestUtils.RowsBuilder.of(
                      Schema.FieldType.STRING, "user_id",
                      Schema.FieldType.INT32, "intField",
                      Schema.FieldType.STRING, "stringField")
                  .addRows("1", 1, "test1", "1", 2, "test2")
                  .getRows());
      pipeline.run();
    }
  }
  