Theodore created AVRO-3177:
------------------------------
Summary: Deserializing a HashMap with different possible value
types
Key: AVRO-3177
URL: https://issues.apache.org/jira/browse/AVRO-3177
Project: Apache Avro
Issue Type: Wish
Components: rust
Reporter: Theodore
Hi!
I'm trying to convert a record that conforms to this schema:
{code:java}
const SCHEMA: &str = r#"
{
"type" : "record",
"name" : "TestName123",
"namespace" : "Microsoft.ServiceBus.Messaging",
"fields" : [ {
"name": "test_field_name",
"type" : { "type": "map", "values": [ "long", "double", "string", "bytes" ] }
}]
}
"#; {code}
to a Rust type defined like this:
{code:java}
pub struct TestName123 {
pub test_field_name: HashMap<String, ???>
}
{code}
using this code:
{code:java}
// `record` is an Avro `Value` type, specifically a `Value::Record`.
avro_rs::from_value::<TestName123>(record)
{code}
I can't seem to figure out the type for `test_field_name` map values. I just
wanted to confirm that doing this is at least possible, and if it is if anyone
would have any general pointers on the type.
I can't find any similar examples in the documentation. I have tried things
like this:
{code:java}
#[derive(Clone, Debug, Deserialize)]
pub enum MapValue {
MapValueLong(u64),
MapValueDouble(f64),
MapValueString(String),
MapValueBytes(Bytes)
}
{code}
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