rerun::ComponentBatch Struct Reference

Arrow-encoded data of a single batch of components together with a component descriptor. More...

#include <rerun/component_batch.hpp>

Public Member Functions
Result< ComponentColumn >	partitioned (const Collection< uint32_t > &lengths) &&
	Partitions the component data into multiple sub-batches.
Result< ComponentColumn >	partitioned () &&
	Partitions the component data into unit-length sub-batches.
Result< ComponentColumn >	partitioned (const Collection< uint32_t > &lengths) const &
	Partitions the component data into multiple sub-batches.
Result< ComponentColumn >	partitioned () const &
	Partitions the component data into unit-length sub-batches.
size_t	length () const
	Size in the number of elements the underlying arrow array contains.
Error	to_c_ffi_struct (rr_component_batch &out_component_batch) const
	To rerun C API component batch.

Static Public Member Functions
template<typename T >
static Result< ComponentBatch >	empty (const ComponentDescriptor &descriptor)
	Creates a new empty component batch with a given descriptor.
template<typename T >
static Result< ComponentBatch >	from_loggable (const rerun::Collection< T > &components, const ComponentDescriptor &descriptor)
	Creates a new component batch from a collection of component instances.
template<typename T >
static Result< ComponentBatch >	from_loggable (const T &component, const ComponentDescriptor &descriptor)
	Creates a new component batch from a single component instance.
template<typename T >
static Result< ComponentBatch >	from_loggable (const std::optional< T > &component, const ComponentDescriptor &descriptor)
	Creates a new data cell from a single optional component instance.
template<typename T >
static Result< ComponentBatch >	from_loggable (const std::optional< rerun::Collection< T > > &components, const ComponentDescriptor &descriptor)
	Creates a new data cell from an optional collection of component instances.
static Result< ComponentBatch >	from_arrow_array (std::shared_ptr< arrow::Array > array, const ComponentDescriptor &descriptor)
	Creates a new component batch from an already existing arrow array.

Public Attributes
std::shared_ptr< arrow::Array >	array
	Arrow-encoded data of the component instances.
ComponentTypeHandle	component_type
	The type of the component instances in array.

Detailed Description

Arrow-encoded data of a single batch of components together with a component descriptor.

Component descriptors are registered when first encountered.

Member Function Documentation

from_loggable() [1/4]

template<typename T >

static Result< ComponentBatch > rerun::ComponentBatch::from_loggable ( const rerun::Collection< T > &  components, const ComponentDescriptor &  descriptor  )

inlinestatic

Creates a new component batch from a collection of component instances.

Automatically registers the descriptor the first time it is encountered.

TODO(#4257) should take a rerun::Collection instead of pointer and size.

from_loggable() [2/4]

template<typename T >

static Result< ComponentBatch > rerun::ComponentBatch::from_loggable ( const T &  component, const ComponentDescriptor &  descriptor  )

inlinestatic

Creates a new component batch from a single component instance.

Automatically registers the descriptor the first time it is encountered.

from_loggable() [3/4]

template<typename T >

static Result< ComponentBatch > rerun::ComponentBatch::from_loggable ( const std::optional< T > &  component, const ComponentDescriptor &  descriptor  )

inlinestatic

Creates a new data cell from a single optional component instance.

None is represented as a data cell with 0 instances.

Automatically registers the descriptor the first time it is encountered.

from_loggable() [4/4]

template<typename T >

static Result< ComponentBatch > rerun::ComponentBatch::from_loggable ( const std::optional< rerun::Collection< T > > &  components, const ComponentDescriptor &  descriptor  )

inlinestatic

Creates a new data cell from an optional collection of component instances.

None is represented as a data cell with 0 instances.

Automatically registers the descriptor the first time it is encountered.

from_arrow_array()

static Result< ComponentBatch > rerun::ComponentBatch::from_arrow_array ( std::shared_ptr< arrow::Array >  array, const ComponentDescriptor &  descriptor  )

static

Creates a new component batch from an already existing arrow array.

Automatically registers the descriptor the first time it is encountered.

partitioned() [1/4]

Result< ComponentColumn > rerun::ComponentBatch::partitioned

(

const Collection< uint32_t > &

lengths

)

&&

Partitions the component data into multiple sub-batches.

Specifically, this transforms the existing ComponentBatch data into a ComponentColumn.

This makes it possible to use RecordingStream::send_columns to send columnar data directly into Rerun.

Parameters

lengths

The number of components in each run. for rerun::RecordingStream::send_columns, this specifies the number of components at each time point. The sum of the lengths must be equal to the number of components in the batch.

partitioned() [2/4]

Result< ComponentColumn > rerun::ComponentBatch::partitioned

(

)

&&

Partitions the component data into unit-length sub-batches.

Specifically, this transforms the existing ComponentBatch data into a ComponentColumn. This makes it possible to use RecordingStream::send_columns to send columnar data directly into Rerun.

partitioned() [3/4]

Result< ComponentColumn > rerun::ComponentBatch::partitioned

(

const Collection< uint32_t > &

lengths

)

const &

Partitions the component data into multiple sub-batches.

Specifically, this transforms the existing ComponentBatch data into a ComponentColumn. This makes it possible to use RecordingStream::send_columns to send columnar data directly into Rerun.

Parameters

lengths

The number of components in each run. for rerun::RecordingStream::send_columns, this specifies the number of components at each time point. The sum of the lengths must be equal to the number of components in the batch.

partitioned() [4/4]

Result< ComponentColumn > rerun::ComponentBatch::partitioned

(

)

const &

Partitions the component data into unit-length sub-batches.

Specifically, this transforms the existing ComponentBatch data into a ComponentColumn. This makes it possible to use RecordingStream::send_columns to send columnar data directly into Rerun.

to_c_ffi_struct()

Error rerun::ComponentBatch::to_c_ffi_struct

(

rr_component_batch &

out_component_batch

)

const

To rerun C API component batch.

The resulting rr_component_batch keeps the arrow::Array alive until it is released.

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The documentation for this struct was generated from the following file:

• rerun/component_batch.hpp