You need an array of JSON objects in the avsc file, something like:
[
{
"namespace": "def.al.pha.bet",
"type": "enum",
"name": "KnownLetters",
"doc": "Specifies known types of letters",
"symbols": ["A", "B", "C", "D", "E"]
},
{
"namespace": "def.note.pad",
"type": "record",
"name": "Page",
"doc": "Object definition of a Page composed of alphabet",
"fields": [
{"name": "letter", "type": "KnownLetters"}
]
}
}
What you have is one JSON object, with "name" (and other properties)
declared twice, and the parser took the last one.
If the two objects are in a different namespace, you might need a fully
qualified name to reference them too.
On 3/10/11 8:04 PM, "Aleksey Maslov" <[email protected]> wrote:
>Hi,
>[i don't see my original post - but if you seen this already, I appologise
>for re-post]
>
>I am trying to define several objects in avsc files and compile the schema
>using avro-1.4.1;
>i have several questions;
>
>1. Is it true that all objects MUST be defined in 1 huge file if I want to
>reference previously defined ones?
>(sounds a bit messy if you have dozens of objects to define, but ok);
>
>2. I am having a problem defining a field of type enum (previously defined
>in same avsc file), with error:
> Exception in thread "main" org.apache.avro.SchemaParseException:
>"KnownLetters" is not a defined name.
>
>
>my avsc file contents:
>
>{
> "namespace": "def.al.pha.bet",
> "type": "enum",
> "name": "KnownLetters",
> "doc": "Specifies known types of letters",
> "symbols": ["A", "B", "C", "D", "E"],
>
> "namespace": "def.note.pad",
> "type": "record",
> "name": "Page",
> "doc": "Object definition of a Page composed of alphabet",
> "fields": [
> {"name": "letter", "type": "KnownLetters"}
> ]
>}
>
>How could this be achived? What am i missing?
>
>3. I am observing strange namespace related behavior; to experiment, in
>the
>above avsc definition I defined letter as "int" (just to keep going), and
>found that only 1 of the two objects are being generated (the Page.java);
>the enum is not generated at all, and i get no errors on the command line;
>why is that?
>
>my invocation is:
>> java -jar ..\lib\avro-tools-1.4.1.jar compile schema ..\def\test.avsc
>>..\
>
>Thanks;
>
>
>--
>View this message in context:
>http://apache-avro.679487.n3.nabble.com/How-to-reference-previously-define
>d-enum-in-avsc-file-tp2663512p2663512.html
>Sent from the Avro - Users mailing list archive at Nabble.com.
