How to use java-class with JSON schema?

Hi gang,

I'm trying to build a JSON schema with a custom type as the field instead
of just a String. Is "java-class" supposed to work in that use case? I
can't seem to make any progress.

Example schema (Foo.avsc):

"namespace" : "com.example",
"type" : "record",
"name" : "Foo",
"fields" : [
{ "name" : "batchId", "type" : "long" },
{ "name" : "timestamp", "type" : "string", "java-class" :
"com.example.Timestamp" }

The Timestamp class has a public constructor which takes a single String
argument. I even tried annotating it with @Stringable. However, the
generated java class always uses String, not my custom type.

$ java -jar ~/Downloads/avro-tools-1.7.6.jar compile -string schema
src/main/avro/Foo.avsc /tmp/foo
From the generated .java file

...

/**

* All-args constructor.

*/

public Foo(java.lang.Long batchId, java.lang.String timestamp) {

this.batchId = batchId;

this.timestamp = timestamp;

...

Any help appreciated,

- Ian.