[ https://issues.apache.org/jira/browse/AVRO-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sachin Goyal updated AVRO-1554: ------------------------------- Attachment: AVRO-1554.patch Attaching patch for #2 solution above. +Summary+: # ReflectData has a field "config" of type AvroConfiguration. # AvroConfiguration by default stores encodings for UUID and Date. # If AvroIgnore is absent on a field, but there is a custom-encoding for its class, that encoding is used for reading/writing that field. # A small fix related to UNION type schema for custom-encoding. # Test-case included. Diff created with diff -ru, Patch using patch -i AVRO-1554.patch > Avro should have support for common constructs like UUID and Date > ----------------------------------------------------------------- > > Key: AVRO-1554 > URL: https://issues.apache.org/jira/browse/AVRO-1554 > Project: Avro > Issue Type: Bug > Components: java > Affects Versions: 1.7.6 > Reporter: Sachin Goyal > Attachments: AVRO-1554.patch > > > Consider the following code: > {code} > public class AvroExample > { > public static void main (String [] args) throws Exception > { > ReflectData rdata = ReflectData.AllowNull.get(); > Schema schema = rdata.getSchema(Temp.class); > > ReflectDatumWriter<Temp> datumWriter = > new ReflectDatumWriter (Temp.class, rdata); > DataFileWriter<Temp> fileWriter = > new DataFileWriter<Temp> (datumWriter); > ByteArrayOutputStream baos = new ByteArrayOutputStream(); > fileWriter.create(schema, baos); > fileWriter.append(new Temp()); > fileWriter.close(); > byte[] bytes = baos.toByteArray(); > GenericDatumReader<GenericRecord> datumReader = > new GenericDatumReader<GenericRecord> (); > SeekableByteArrayInput avroInputStream = > new SeekableByteArrayInput(bytes); > DataFileReader<GenericRecord> fileReader = > new DataFileReader<GenericRecord>(avroInputStream, > datumReader); > schema = fileReader.getSchema(); > GenericRecord record = null; > record = fileReader.next(record); > System.out.println (record); > System.out.println (record.get("id")); > } > } > class Temp > { > UUID id = UUID.randomUUID(); > Date date = new Date(); > BigInteger bi = BigInteger.TEN; > } > {code} > Output from this code is: > {code:javascript} > {"id": {}, "date": {}, "bi": "10"} > {code} > UUID and Date type fields are very common in Java and can be found a lot in > third-party code as well (where it may be difficult to put annotations). > So Avro should include a default serialization/deserialization support for > such fields. -- This message was sent by Atlassian JIRA (v6.2#6252)