| /* |
| * 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; |
| |
| import static org.apache.beam.sdk.schemas.utils.TestJavaBeans.SIMPLE_BEAN_SCHEMA; |
| import static org.apache.beam.sdk.schemas.utils.TestPOJOs.SIMPLE_POJO_SCHEMA; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.google.auto.service.AutoService; |
| import java.util.List; |
| import org.apache.beam.sdk.schemas.annotations.DefaultSchema; |
| import org.apache.beam.sdk.schemas.utils.TestJavaBeans.SimpleBean; |
| import org.apache.beam.sdk.schemas.utils.TestPOJOs.SimplePOJO; |
| import org.apache.beam.sdk.transforms.SerializableFunction; |
| import org.apache.beam.sdk.values.Row; |
| import org.apache.beam.sdk.values.TypeDescriptor; |
| import org.apache.beam.sdk.values.TypeDescriptors; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.ExpectedException; |
| |
| /** Unit tests for {@link SchemaRegistry}. */ |
| public class SchemaRegistryTest { |
| static final Schema EMPTY_SCHEMA = Schema.builder().build(); |
| static final Schema STRING_SCHEMA = Schema.builder().addStringField("string").build(); |
| static final Schema INTEGER_SCHEMA = Schema.builder().addInt32Field("integer").build(); |
| @Rule public ExpectedException thrown = ExpectedException.none(); |
| |
| private void tryGetters(SchemaRegistry registry) throws NoSuchSchemaException { |
| assertEquals(STRING_SCHEMA, registry.getSchema(String.class)); |
| assertEquals(STRING_SCHEMA, registry.getSchema(TypeDescriptors.strings())); |
| assertEquals( |
| Row.withSchema(STRING_SCHEMA).addValue("foobar").build(), |
| registry.getToRowFunction(String.class).apply("foobar")); |
| assertEquals( |
| Row.withSchema(STRING_SCHEMA).addValue("foobar").build(), |
| registry.getToRowFunction(TypeDescriptors.strings()).apply("foobar")); |
| |
| assertEquals(INTEGER_SCHEMA, registry.getSchema(Integer.class)); |
| assertEquals(INTEGER_SCHEMA, registry.getSchema(TypeDescriptors.integers())); |
| assertEquals( |
| Row.withSchema(INTEGER_SCHEMA).addValue(42).build(), |
| registry.getToRowFunction(Integer.class).apply(42)); |
| assertEquals( |
| Row.withSchema(INTEGER_SCHEMA).addValue(42).build(), |
| registry.getToRowFunction(TypeDescriptors.integers()).apply(42)); |
| |
| thrown.expect(NoSuchSchemaException.class); |
| registry.getSchema(Double.class); |
| } |
| |
| @Test |
| public void testRegisterForClass() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| registry.registerSchemaForClass( |
| String.class, |
| STRING_SCHEMA, |
| s -> Row.withSchema(STRING_SCHEMA).addValue(s).build(), |
| r -> r.getString("string")); |
| registry.registerSchemaForClass( |
| Integer.class, |
| INTEGER_SCHEMA, |
| s -> Row.withSchema(INTEGER_SCHEMA).addValue(s).build(), |
| r -> r.getInt32("integer")); |
| tryGetters(registry); |
| } |
| |
| @Test |
| public void testRegisterForType() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| registry.registerSchemaForType( |
| TypeDescriptors.strings(), |
| STRING_SCHEMA, |
| s -> Row.withSchema(STRING_SCHEMA).addValue(s).build(), |
| r -> r.getString("string")); |
| registry.registerSchemaForType( |
| TypeDescriptors.integers(), |
| INTEGER_SCHEMA, |
| s -> Row.withSchema(INTEGER_SCHEMA).addValue(s).build(), |
| r -> r.getInt32("integer")); |
| tryGetters(registry); |
| } |
| |
| /** A test SchemaProvider. */ |
| public static final class Provider implements SchemaProvider { |
| @Override |
| public <T> Schema schemaFor(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptors.strings())) { |
| return STRING_SCHEMA; |
| } else if (typeDescriptor.equals(TypeDescriptors.integers())) { |
| return INTEGER_SCHEMA; |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public <T> SerializableFunction<T, Row> toRowFunction(TypeDescriptor<T> typeDescriptor) { |
| return v -> Row.withSchema(schemaFor(typeDescriptor)).addValue(v).build(); |
| } |
| |
| @Override |
| public <T> SerializableFunction<Row, T> fromRowFunction(TypeDescriptor<T> typeDescriptor) { |
| return r -> r.getValue(0); |
| } |
| } |
| |
| @Test |
| public void testRegisterProvider() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| registry.registerSchemaProvider(new Provider()); |
| tryGetters(registry); |
| } |
| |
| static class TestSchemaClass {} |
| |
| static final class TestAutoProvider implements SchemaProvider { |
| @Override |
| public <T> Schema schemaFor(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestSchemaClass.class))) { |
| return EMPTY_SCHEMA; |
| } |
| return null; |
| } |
| |
| @Override |
| public <T> SerializableFunction<T, Row> toRowFunction(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestSchemaClass.class))) { |
| return v -> Row.withSchema(EMPTY_SCHEMA).build(); |
| } |
| return null; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <T> SerializableFunction<Row, T> fromRowFunction(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestSchemaClass.class))) { |
| return r -> (T) new TestSchemaClass(); |
| } |
| return null; |
| } |
| } |
| |
| /** A @link SchemaProviderRegistrar} for testing. */ |
| @AutoService(SchemaProviderRegistrar.class) |
| public static class TestSchemaProviderRegistrar implements SchemaProviderRegistrar { |
| @Override |
| public List<SchemaProvider> getSchemaProviders() { |
| return ImmutableList.of(new TestAutoProvider()); |
| } |
| } |
| |
| @Test |
| public void testAutoSchemaProvider() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| assertEquals(EMPTY_SCHEMA, registry.getSchema(TestSchemaClass.class)); |
| } |
| |
| @DefaultSchema(TestDefaultSchemaProvider.class) |
| static class TestDefaultSchemaClass {} |
| |
| /** A test schema provider. */ |
| public static final class TestDefaultSchemaProvider implements SchemaProvider { |
| @Override |
| public <T> Schema schemaFor(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestDefaultSchemaClass.class))) { |
| return EMPTY_SCHEMA; |
| } |
| return null; |
| } |
| |
| @Override |
| public <T> SerializableFunction<T, Row> toRowFunction(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestDefaultSchemaClass.class))) { |
| return v -> Row.withSchema(EMPTY_SCHEMA).build(); |
| } |
| return null; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <T> SerializableFunction<Row, T> fromRowFunction(TypeDescriptor<T> typeDescriptor) { |
| if (typeDescriptor.equals(TypeDescriptor.of(TestDefaultSchemaClass.class))) { |
| return r -> (T) new TestSchemaClass(); |
| } |
| return null; |
| } |
| } |
| |
| @Test |
| public void testDefaultSchemaProvider() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| assertEquals(EMPTY_SCHEMA, registry.getSchema(TestDefaultSchemaClass.class)); |
| } |
| |
| @Test |
| public void testRegisterPojo() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| registry.registerPOJO(SimplePOJO.class); |
| Schema schema = registry.getSchema(SimplePOJO.class); |
| assertTrue(SIMPLE_POJO_SCHEMA.equivalent(schema)); |
| } |
| |
| @Test |
| public void testRegisterJavaBean() throws NoSuchSchemaException { |
| SchemaRegistry registry = SchemaRegistry.createDefault(); |
| registry.registerJavaBean(SimpleBean.class); |
| Schema schema = registry.getSchema(SimpleBean.class); |
| assertTrue(SIMPLE_BEAN_SCHEMA.equivalent(schema)); |
| } |
| } |