ollis commented on issue #40:
URL: https://github.com/apache/avro-rs/issues/40#issuecomment-2458999449
I can get it to work as expected by changing the implementation of Decimal
to use a custom implementation of Serialize and Deserialize instead of relying
on derive:
```rust
#[derive(Debug, Clone, Eq)]
pub struct Decimal {
value: BigInt,
len: usize,
}
impl Serialize for Decimal {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer
{
let bytes = &*self.to_vec().unwrap();
serializer.serialize_bytes(bytes)
}
}
impl<'de> Deserialize<'de> for Decimal {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
struct DecimalVisitor;
impl<'de> serde::de::Visitor<'de> for DecimalVisitor {
type Value = Decimal;
fn expecting(&self, formatter: &mut std::fmt::Formatter) ->
std::fmt::Result {
formatter.write_str("a byte slice or seq of bytes")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: serde::de::Error,
{
Ok(Decimal::from(v))
}
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value,
A::Error>
where
A: SeqAccess<'de>,
{
let mut bytes = Vec::new();
while let Some(value) = seq.next_element::<u8>()? {
bytes.push(value);
}
Ok(Decimal::from(bytes))
}
}
deserializer.deserialize_bytes(DecimalVisitor)
}
}
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