Method build_decoder

arrow-avro/src/reader/mod.rs:1312–1320

Build a streaming `Decoder` from this builder. # Requirements `SchemaStore` **must** be provided via `Self::with_writer_schema_store`. The store should contain **all** fingerprints that may appear on the stream. # Errors Returns [`ArrowError::InvalidArgumentError`] if the schema store is missing

(self)

    /// # Errors
    /// * Returns [`ArrowError::InvalidArgumentError`] if the schema store is missing
    pub fn build_decoder(self) -> Result<Decoder, ArrowError> {
        if self.writer_schema_store.is_none() {
            return Err(ArrowError::InvalidArgumentError(
                "Building a decoder requires a writer schema store".to_string(),
            ));
        }
        self.make_decoder(None, self.reader_schema.as_ref())
            .map_err(ArrowError::from)
    }
}

/// A high‑level Avro **Object Container File** reader.