Struct RustTestCustomData 

pub struct RustTestCustomData {
    pub instrument_id: InstrumentId,
    pub value: f64,
    pub flag: bool,
    pub ts_event: UnixNanos,
    pub ts_init: UnixNanos,
}

A simple Rust custom data type for roundtrip testing.

Used in persistence integration tests (test_catalog.rs) and Python roundtrip tests. Tests call ensure_custom_data_registered::<RustTestCustomData>() before using the catalog.

Fields

instrument_id: InstrumentId

value: f64

flag: bool

ts_event: UnixNanos

ts_init: UnixNanos

Implementations

impl RustTestCustomData

pub fn new( instrument_id: InstrumentId, value: f64, flag: bool, ts_event: UnixNanos, ts_init: UnixNanos, ) -> Self

Constructor from all fields. Use from Rust; Python init forwards to this.

impl RustTestCustomData

pub fn repr(&self) -> String

Returns a string representation in the same style as Python CustomDataClass (fields and ts_event/ts_init as ISO8601).

Trait Implementations

impl ArrowSchemaProvider for RustTestCustomData

fn get_schema(metadata: Option<HashMap<String, String>>) -> Schema

Returns the Arrow schema for this type with optional metadata.

fn get_schema_map() -> HashMap<String, String>

Returns a map of field names to their Arrow data types.

impl CatalogPathPrefix for RustTestCustomData

fn path_prefix() -> &'static str

Returns the path prefix (directory name) for this data type.

impl Clone for RustTestCustomData

fn clone(&self) -> RustTestCustomData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CustomDataSerialize for RustTestCustomData

fn schema(&self) -> Result<Schema>

Returns the Arrow schema for this custom data type.

fn encode_record_batch( &self, items: &[Arc<dyn CustomDataTrait>], ) -> Result<RecordBatch>

Encodes a batch of custom data items to an Arrow RecordBatch.

impl CustomDataTrait for RustTestCustomData

fn type_name(&self) -> &'static str

Returns the type name for the custom data.

fn type_name_static() -> &'static str

Returns the type name used in serialized form (e.g. in the "type" field).

fn as_any(&self) -> &dyn Any

Returns the data as a dyn Any for downcasting.

fn ts_event(&self) -> UnixNanos

Returns the event timestamp (when the data occurred).

fn to_json(&self) -> Result<String>

Serializes the custom data to a JSON string.

fn clone_arc(&self) -> Arc<dyn CustomDataTrait>

Returns a cloned Arc of the custom data.

fn eq_arc(&self, other: &dyn CustomDataTrait) -> bool

Returns whether the custom data is equal to another.

fn from_json(value: Value) -> Result<Arc<dyn CustomDataTrait>>

Deserializes from a JSON value into an Arc’d trait object.

fn to_json_py(&self) -> Result<String, Error>

Python-facing JSON serialization. Default implementation forwards to to_json. Override if a different behavior is needed for the Python API.

impl Debug for RustTestCustomData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl DecodeDataFromRecordBatch for RustTestCustomData

fn decode_data_batch( _metadata: &HashMap<String, String>, record_batch: RecordBatch, ) -> Result<Vec<Data>, EncodingError>

Decodes a RecordBatch into raw Data values, using the provided metadata.

impl<'de> Deserialize<'de> for RustTestCustomData

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for RustTestCustomData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl EncodeToRecordBatch for RustTestCustomData

fn encode_batch( metadata: &HashMap<String, String>, data: &[Self], ) -> Result<RecordBatch, ArrowError>

Encodes a batch of values into an Arrow RecordBatch using the provided metadata.

fn metadata(&self) -> HashMap<String, String>

Returns the metadata for this data element.

fn chunk_metadata(chunk: &[Self]) -> HashMap<String, String>

Returns the metadata selected for a chunk.

impl From<RustTestCustomData> for Data

fn from(value: RustTestCustomData) -> Self

Converts to this type from the input type.

impl HasTsInit for RustTestCustomData

fn ts_init(&self) -> UnixNanos

Returns the UNIX timestamp (nanoseconds) when the instance was created.

impl PartialEq for RustTestCustomData

fn eq(&self, other: &RustTestCustomData) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for RustTestCustomData

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RustTestCustomData

impl TryFrom<Data> for RustTestCustomData

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Data) -> Result<Self, Self::Error>

Performs the conversion.