| /* |
| * 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 |
| * |
| * https://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.trevni.avro; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.avro.Schema; |
| import org.apache.avro.file.DataFileReader; |
| import org.apache.avro.file.DataFileWriter; |
| import org.apache.avro.generic.GenericData; |
| import org.apache.avro.generic.GenericDatumReader; |
| import org.apache.avro.generic.GenericDatumWriter; |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.avro.io.DatumWriter; |
| import org.apache.trevni.ColumnFileMetaData; |
| import org.apache.trevni.avro.AvroColumnReader.Params; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestEvolvedSchema { |
| private static String writerSchema = "{" + " \"namespace\": \"org.apache.avro\"," |
| + " \"name\": \"test_evolution\"," + " \"type\": \"record\"," + " \"fields\": [" |
| + " { \"name\": \"a\", \"type\":\"string\" }," + " { \"name\": \"b\", \"type\":\"int\" }" + " ]" |
| + "}"; |
| private static String innerSchema = "{\"name\":\"c1\"," + " \"type\":\"record\"," |
| + " \"fields\":[{\"name\":\"c11\", \"type\":\"int\", \"default\": 2}," |
| + " {\"name\":\"c12\", \"type\":\"string\", \"default\":\"goodbye\"}]}"; |
| private static String evolvedSchema2 = "{" + " \"namespace\": \"org.apache.avro\"," |
| + " \"name\": \"test_evolution\"," + " \"type\": \"record\"," + " \"fields\": [" |
| + " { \"name\": \"a\", \"type\":\"string\" }," + " { \"name\": \"b\", \"type\":\"int\" }," |
| + " { \"name\": \"c\", \"type\":" + innerSchema + "," |
| + " \"default\":{\"c11\": 1, \"c12\": \"hello\"}" + " }" + " ]" + "}"; |
| |
| GenericData.Record writtenRecord; |
| GenericData.Record evolvedRecord; |
| GenericData.Record innerRecord; |
| |
| private static final Schema writer = new Schema.Parser().parse(writerSchema); |
| private static final Schema evolved = new Schema.Parser().parse(evolvedSchema2); |
| private static final Schema inner = new Schema.Parser().parse(innerSchema); |
| |
| @Before |
| public void setUp() { |
| writtenRecord = new GenericData.Record(writer); |
| writtenRecord.put("a", "record"); |
| writtenRecord.put("b", 21); |
| |
| innerRecord = new GenericData.Record(inner); |
| innerRecord.put("c11", 1); |
| innerRecord.put("c12", "hello"); |
| |
| evolvedRecord = new GenericData.Record(evolved); |
| evolvedRecord.put("a", "record"); |
| evolvedRecord.put("b", 21); |
| evolvedRecord.put("c", innerRecord); |
| } |
| |
| @Test |
| public void testTrevniEvolvedRead() throws IOException { |
| AvroColumnWriter<GenericRecord> acw = new AvroColumnWriter<>(writer, new ColumnFileMetaData()); |
| acw.write(writtenRecord); |
| File serializedTrevni = File.createTempFile("trevni", null); |
| acw.writeTo(serializedTrevni); |
| |
| AvroColumnReader.Params params = new Params(serializedTrevni); |
| params.setSchema(evolved); |
| try (AvroColumnReader<GenericRecord> acr = new AvroColumnReader<>(params)) { |
| GenericRecord readRecord = acr.next(); |
| Assert.assertEquals(evolvedRecord, readRecord); |
| Assert.assertFalse(acr.hasNext()); |
| } |
| } |
| |
| @Test |
| public void testAvroEvolvedRead() throws IOException { |
| File serializedAvro = File.createTempFile("avro", null); |
| DatumWriter<GenericRecord> dw = new GenericDatumWriter<>(writer); |
| DataFileWriter<GenericRecord> dfw = new DataFileWriter<>(dw); |
| dfw.create(writer, serializedAvro); |
| dfw.append(writtenRecord); |
| dfw.flush(); |
| dfw.close(); |
| |
| GenericDatumReader<GenericRecord> reader = new GenericDatumReader<>(writer); |
| reader.setExpected(evolved); |
| try (DataFileReader<GenericRecord> dfr = new DataFileReader<>(serializedAvro, reader)) { |
| GenericRecord readRecord = dfr.next(); |
| Assert.assertEquals(evolvedRecord, readRecord); |
| Assert.assertFalse(dfr.hasNext()); |
| } |
| } |
| |
| } |