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_pyobject(&self, py: Python<'_>) -> PyResult<Py<PyAny>>

Converts the custom data to a Python 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 for the first element in a chunk.

impl From<RustTestCustomData> for Data

fn from(value: RustTestCustomData) -> Self

Converts to this type from the input type.

impl<'a, 'py> FromPyObject<'a, 'py> for RustTestCustomData

where Self: Clone,

type Error = PyClassGuardError<'a, 'py>

The type returned in the event of a conversion error.

fn extract( obj: Borrowed<'a, 'py, PyAny>, ) -> Result<Self, <Self as FromPyObject<'a, 'py>>::Error>

Extracts Self from the bound smart pointer obj.

impl HasTsInit for RustTestCustomData

fn ts_init(&self) -> UnixNanos

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

impl<'py> IntoPyObject<'py> for RustTestCustomData

type Target = RustTestCustomData

The Python output type

type Output = Bound<'py, <RustTestCustomData as IntoPyObject<'py>>::Target>

The smart pointer type to use.

type Error = PyErr

The type returned in the event of a conversion error.

fn into_pyobject( self, py: Python<'py>, ) -> Result<<Self as IntoPyObject<'_>>::Output, <Self as IntoPyObject<'_>>::Error>

Performs the conversion.

impl PartialEq for RustTestCustomData

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PyClass for RustTestCustomData

const NAME: &str = "RustTestCustomData"

Name of the class.

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for RustTestCustomData

const MODULE: Option<&str> = ::core::option::Option::None

Module which the class will be associated with.

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

const IS_IMMUTABLE_TYPE: bool = false

#[pyclass(immutable_type)]

const RAW_DOC: &'static CStr = /// 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.

Docstring for the class provided on the struct or enum.

const DOC: &'static CStr

Fully rendered class doc, including the text_signature if a constructor is defined.

type Layout = <<RustTestCustomData as PyClassImpl>::BaseNativeType as PyClassBaseType>::Layout<RustTestCustomData>

Description of how this class is laid out in memory

type BaseType = PyAny

Base class

type ThreadChecker = NoopThreadChecker

This handles following two situations:

type Inventory = Pyo3MethodsInventoryForRustTestCustomData

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<PyObjectOffset>

Used to provide the dictoffset slot (equivalent to tp_dictoffset)

fn weaklist_offset() -> Option<PyObjectOffset>

Used to provide the weaklistoffset slot (equivalent to tp_weaklistoffset

impl PyClassNewTextSignature for RustTestCustomData

const TEXT_SIGNATURE: &'static str = "(instrument_id, value, flag, ts_event, ts_init)"

impl PyTypeInfo for RustTestCustomData

const NAME: &str = <Self as ::pyo3::PyClass>::NAME

👎Deprecated since 0.28.0:

prefer using ::type_object(py).name() to get the correct runtime value

Class name.

const MODULE: Option<&str> = <Self as ::pyo3::impl_::pyclass::PyClassImpl>::MODULE

👎Deprecated since 0.28.0:

prefer using ::type_object(py).module() to get the correct runtime value

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

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 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.

impl DerefToPyAny for RustTestCustomData

impl StructuralPartialEq for RustTestCustomData