| /* |
| * 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.schemas.utils; |
| |
| import static org.hamcrest.Matchers.containsInAnyOrder; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertThat; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| import org.apache.beam.sdk.schemas.Schema; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Joiner; |
| import org.junit.Test; |
| |
| /** Tests for {@link SchemaZipFold} with examples. */ |
| public class SchemaZipFoldTest { |
| |
| private static final Schema LEFT = |
| Schema.of( |
| Schema.Field.of("left", Schema.FieldType.INT32), |
| Schema.Field.of("f0", Schema.FieldType.INT32), |
| Schema.Field.of("f1", Schema.FieldType.INT32), |
| Schema.Field.of("f2", Schema.FieldType.INT32), |
| Schema.Field.of( |
| "f3", |
| Schema.FieldType.row( |
| Schema.of( |
| Schema.Field.of("inner_left", Schema.FieldType.INT32), |
| Schema.Field.of("f0", Schema.FieldType.INT32), |
| Schema.Field.of("f1", Schema.FieldType.INT32))))); |
| |
| private static final Schema RIGHT = |
| Schema.of( |
| Schema.Field.of("right", Schema.FieldType.INT32), |
| Schema.Field.of("f0", Schema.FieldType.INT32), |
| Schema.Field.of("f1", Schema.FieldType.INT32), |
| Schema.Field.of("f2", Schema.FieldType.STRING), |
| Schema.Field.of( |
| "f3", |
| Schema.FieldType.row( |
| Schema.of( |
| Schema.Field.of("inner_right", Schema.FieldType.INT32), |
| Schema.Field.of("f0", Schema.FieldType.INT32), |
| Schema.Field.of("f1", Schema.FieldType.STRING))))); |
| |
| @Test |
| public void testCountCommonLeafs() { |
| assertEquals(3, new CountCommonLeafs().apply(LEFT, RIGHT).intValue()); |
| } |
| |
| @Test |
| public void testCountCommonFields() { |
| assertEquals(6, new CountCommonFields().apply(LEFT, RIGHT).intValue()); |
| } |
| |
| @Test |
| public void testCountMissingFields() { |
| assertEquals(4, new CountMissingFields().apply(LEFT, RIGHT).intValue()); |
| } |
| |
| @Test |
| public void testListCommonFields() { |
| assertThat( |
| new ListCommonFields().apply(LEFT, RIGHT), |
| containsInAnyOrder("f0", "f1", "f2", "f3", "f3.f0", "f3.f1")); |
| } |
| |
| static class CountCommonLeafs extends SchemaZipFold<Integer> { |
| |
| @Override |
| public Integer accumulate(Integer left, Integer right) { |
| return left + right; |
| } |
| |
| @Override |
| public Integer accept(Context context, Schema.FieldType left, Schema.FieldType right) { |
| |
| if (left.getTypeName() != right.getTypeName()) { |
| return 0; |
| } |
| |
| if (left.getTypeName() == Schema.TypeName.ROW) { |
| return 0; |
| } |
| |
| if (left.getTypeName() == Schema.TypeName.ARRAY) { |
| return 0; |
| } |
| |
| if (left.getTypeName() == Schema.TypeName.MAP) { |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| @Override |
| public Integer accept( |
| Context context, Optional<Schema.Field> left, Optional<Schema.Field> right) { |
| return 0; |
| } |
| } |
| |
| static class CountCommonFields extends SchemaZipFold<Integer> { |
| |
| @Override |
| public Integer accumulate(Integer left, Integer right) { |
| return left + right; |
| } |
| |
| @Override |
| public Integer accept(Context context, Schema.FieldType left, Schema.FieldType right) { |
| |
| return 0; |
| } |
| |
| @Override |
| public Integer accept( |
| Context context, Optional<Schema.Field> left, Optional<Schema.Field> right) { |
| if (left.isPresent() && right.isPresent()) { |
| return 1; |
| } else { |
| return 0; |
| } |
| } |
| } |
| |
| static class CountMissingFields extends SchemaZipFold<Integer> { |
| |
| @Override |
| public Integer accumulate(Integer left, Integer right) { |
| return left + right; |
| } |
| |
| @Override |
| public Integer accept(Context context, Schema.FieldType left, Schema.FieldType right) { |
| |
| return 0; |
| } |
| |
| @Override |
| public Integer accept( |
| Context context, Optional<Schema.Field> left, Optional<Schema.Field> right) { |
| if (!left.isPresent() || !right.isPresent()) { |
| return 1; |
| } else { |
| return 0; |
| } |
| } |
| } |
| |
| static class ListCommonFields extends SchemaZipFold<List<String>> { |
| |
| @Override |
| public List<String> accumulate(List<String> left, List<String> right) { |
| return Stream.concat(left.stream(), right.stream()).collect(Collectors.toList()); |
| } |
| |
| @Override |
| public List<String> accept(Context context, Schema.FieldType left, Schema.FieldType right) { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public List<String> accept( |
| Context context, Optional<Schema.Field> left, Optional<Schema.Field> right) { |
| if (left.isPresent() && right.isPresent()) { |
| String pathStr = Joiner.on('.').join(context.path()); |
| return Collections.singletonList(pathStr); |
| } else { |
| return Collections.emptyList(); |
| } |
| } |
| } |
| } |