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https://issues.apache.org/jira/browse/AVRO-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charlie Quillard updated AVRO-1674:
-----------------------------------
Component/s: c++
Affects Version/s: 1.7.7
> Optional field does not work in avro-cpp
> ----------------------------------------
>
> Key: AVRO-1674
> URL: https://issues.apache.org/jira/browse/AVRO-1674
> Project: Avro
> Issue Type: Bug
> Components: c++
> Affects Versions: 1.7.7
> Reporter: Charlie Quillard
>
> I have to implement an optional field in my avro schema and when i test this
> one with avro-py that works and that does not works with avro-cpp.
> That is my schema (cpx.json) :
> {code}
> {
> "type" : "record",
> "name" : "example",
> "fields" : [
> {
> "name": "city",
> "type": ["null", "string"],
> "defaults":null
> }
> ]
> }
> {code}
> That is my cpp code when i test without fill my field:
> {code}
> typedef std::pair<avro::ValidSchema, avro::GenericDatum> Pair;
> int main(int ac, char **av)
> {
> std::ifstream ifs("cpx.json");
> avro::ValidSchema schema;
> avro::compileJsonSchema(ifs, schema);
> Pair p(schema, avro::GenericDatum());
> avro::GenericDatum &Data = p.second;
> Data = avro::GenericDatum(schema);
> avro::GenericRecord &sReord = Data.value<avro::GenericRecord>();
> avro::DataFileWriter<Pair> dataFileWriter("test.bin", schema);
> dataFileWriter.write(p);
> dataFileWriter.close();
> }
> {code}
> This is my error when i transform my binary to json with avo-tools :
> {quote}
> Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
> at
> org.apache.avro.io.parsing.Symbol$Alternative.getSymbol(Symbol.java:402)
> at
> org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:290)
> at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
> at
> org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:267)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155)
> at
> org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193)
> at
> org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)
> at org.apache.avro.file.DataFileStream.next(DataFileStream.java:233)
> at org.apache.avro.file.DataFileStream.next(DataFileStream.java:220)
> at org.apache.avro.tool.DataFileReadTool.run(DataFileReadTool.java:77)
> at org.apache.avro.tool.Main.run(Main.java:84)
> at org.apache.avro.tool.Main.main(Main.java:73)
> {quote}
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