pub struct ArrowSession { /* private fields */ }Expand description
Session-scoped registry of Arrow extension plugins.
Exporters are stored in two indices: one keyed by Arrow extension Id (used for
execute_arrow dispatch) and one keyed by Vortex extension Id (used only by
to_arrow_field / to_arrow_schema inference, when callers need to translate a Vortex
extension DType into an Arrow Field with no target schema in hand). Importers are
keyed by Arrow extension name. The default session pre-registers the builtin UUID
plugin; temporal extensions are handled by the canonical Arrow ↔ Vortex path and do not
need plugins.
Implementations§
Source§impl ArrowSession
impl ArrowSession
Sourcepub fn register_exporter(&self, exporter: ArrowExportVTableRef)
pub fn register_exporter(&self, exporter: ArrowExportVTableRef)
Register an ArrowExportVTable under its target Arrow extension Id (for dispatch)
and its source Vortex extension Id (for schema inference).
Sourcepub fn register_importer(&self, importer: ArrowImportVTableRef)
pub fn register_importer(&self, importer: ArrowImportVTableRef)
Register an ArrowImportVTable under its source Arrow extension name.
Sourcepub fn to_arrow_field(&self, name: &str, dtype: &DType) -> VortexResult<Field>
pub fn to_arrow_field(&self, name: &str, dtype: &DType) -> VortexResult<Field>
Build the Arrow Field for a Vortex DType.
For DType::Extensions, plugins registered against the extension’s Id
are tried in registration order; the first plugin to return Some(field) wins.
Sourcepub fn to_arrow_schema(&self, dtype: &DType) -> VortexResult<Schema>
pub fn to_arrow_schema(&self, dtype: &DType) -> VortexResult<Schema>
Build the Arrow Schema for a Vortex top-level DType::Struct, dispatching
extension fields through registered export plugins for inference. Nested
extensions are preserved via Self::to_arrow_field.
Sourcepub fn from_arrow_field(&self, field: &Field) -> VortexResult<DType>
pub fn from_arrow_field(&self, field: &Field) -> VortexResult<DType>
Build the Vortex DType for an Arrow Field.
Plugins registered against the field’s Arrow extension name are tried in
registration order; the first plugin to return Some(dtype) wins. If none
match (or all return None), recurses into container types (DataType::List
family, DataType::FixedSizeList, DataType::Struct) so extension metadata
on nested element/struct fields is preserved. Leaf types use the canonical
Arrow → Vortex mapping via DType::from_arrow.
Sourcepub fn from_arrow_schema(&self, schema: &Schema) -> VortexResult<DType>
pub fn from_arrow_schema(&self, schema: &Schema) -> VortexResult<DType>
Sourcepub fn from_arrow_record_batch(
&self,
batch: RecordBatch,
schema: &Schema,
) -> VortexResult<ArrayRef>
pub fn from_arrow_record_batch( &self, batch: RecordBatch, schema: &Schema, ) -> VortexResult<ArrayRef>
Decode an Arrow RecordBatch into a Vortex struct array, dispatching each
extension column through its registered import plugin.
schema is the authoritative Arrow schema used for dispatch — the columns are
consumed positionally. Pass an external schema (rather than relying on
batch.schema()) when upstream DataFusion plumbing may have stripped Field-level
extension metadata from the runtime RecordBatch.
Sourcepub fn execute_arrow(
&self,
array: ArrayRef,
target: Option<&Field>,
ctx: &mut ExecutionCtx,
) -> VortexResult<ArrowArrayRef>
pub fn execute_arrow( &self, array: ArrayRef, target: Option<&Field>, ctx: &mut ExecutionCtx, ) -> VortexResult<ArrowArrayRef>
Execute a Vortex array into an Arrow array.
If target carries an ARROW:extension:name, the plugin registry is probed for one that
can support executing to the target extension type.
With target = None the fallback path picks the array’s preferred Arrow physical type
and executes directly into that, ignoring extension types.
Sourcepub fn from_arrow_array(
&self,
array: ArrowArrayRef,
field: &Field,
) -> VortexResult<ArrayRef>
pub fn from_arrow_array( &self, array: ArrowArrayRef, field: &Field, ) -> VortexResult<ArrayRef>
Decode an Arrow array into a Vortex array.
Routes through the registered import plugin if field carries an Arrow extension
name we recognize, probing each plugin in registration order until one handles the
input or all return ArrowImport::Unsupported. Otherwise recurses into container
arrays (arrow_array::StructArray, arrow_array::GenericListArray,
arrow_array::FixedSizeListArray, arrow_array::GenericListViewArray) so
extension fields nested inside containers reach their importers; leaf types fall
through to the canonical Arrow → Vortex array conversion.
Trait Implementations§
Source§impl Debug for ArrowSession
impl Debug for ArrowSession
Source§impl Default for ArrowSession
impl Default for ArrowSession
Source§impl SessionVar for ArrowSession
impl SessionVar for ArrowSession
Auto Trait Implementations§
impl !Freeze for ArrowSession
impl !RefUnwindSafe for ArrowSession
impl Send for ArrowSession
impl Sync for ArrowSession
impl Unpin for ArrowSession
impl UnsafeUnpin for ArrowSession
impl !UnwindSafe for ArrowSession
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