Struct rerun::external::re_query::LatestAtComponentResults

pub struct LatestAtComponentResults { /* private fields */ }

Lazily cached results for a particular component when using a cached latest-at query.

Implementations

impl LatestAtComponentResults

pub fn dense<C>(&self, resolver: &PromiseResolver) -> Option<&[C]>

where C: Component,

Returns the component data as a dense vector.

Logs a warning and returns None if the component is missing or cannot be deserialized.

pub fn raw( &self, resolver: &PromiseResolver, component_name: impl Into<ComponentName> ) -> Option<Box<dyn Array>>

Returns the component data as an arrow array.

Logs a warning and returns None if the component is missing or cannot be deserialized.

pub fn mono<C>(&self, resolver: &PromiseResolver) -> Option<C>

where C: Component,

Returns the component data of the single instance.

This assumes that the row we get from the store contains at most one instance for this component; it will log a warning otherwise.

This should only be used for “mono-components” such as Transform and Tensor.

Logs a warning and returns None if the component is missing or cannot be deserialized.

pub fn mono_raw( &self, resolver: &PromiseResolver, component_name: impl Into<ComponentName> ) -> Option<Box<dyn Array>>

Returns the component data of the single instance as an arrow array.

This assumes that the row we get from the store contains at most one instance for this component; it will log a warning otherwise.

This should only be used for “mono-components” such as Transform and Tensor.

Logs a warning and returns None if the component is missing or cannot be deserialized.

pub fn instance<C>(&self, resolver: &PromiseResolver, index: usize) -> Option<C>

where C: Component,

Returns the component data of the specified instance.

Logs a warning and returns None if the component is missing or cannot be deserialized, or the index doesn’t exist.

pub fn instance_raw( &self, resolver: &PromiseResolver, component_name: impl Into<ComponentName>, index: usize ) -> Option<Box<dyn Array>>

Returns the component data of the specified instance as an arrow array.

Logs a warning and returns None if the component is missing or cannot be deserialized, or the index doesn’t exist.

impl LatestAtComponentResults

pub const fn empty() -> LatestAtComponentResults

pub fn component_name( &self, resolver: &PromiseResolver ) -> Option<ComponentName>

Returns the ComponentName of the resolved data, if available.

pub fn is_static(&self) -> bool

Returns whether the resolved data is static.

pub fn num_indices(&self) -> u64

How many indices across this entire cache?

pub fn num_instances(&self) -> u64

How many instances across this entire cache?

impl LatestAtComponentResults

pub fn index(&self) -> &(TimeInt, RowId)

pub fn resolved(&self, resolver: &PromiseResolver) -> PromiseResult<DataCell>

Returns the raw resolved data, if it’s ready.

pub fn to_dense<C>( &self, resolver: &PromiseResolver ) -> PromiseResult<Result<&[C], QueryError>>

where C: Component,

Returns the component data as a dense vector.

Returns an error if the component is missing or cannot be deserialized.

Use PromiseResult::flatten to merge the results of resolving the promise and of deserializing the data into a single one, if you don’t need the extra flexibility.

pub fn iter_dense<C>( &self, resolver: &PromiseResolver ) -> PromiseResult<Result<impl ExactSizeIterator, QueryError>>

where C: Component,

Iterates over the component data, assuming it is dense.

Returns an error if the component is missing or cannot be deserialized.

Use PromiseResult::flatten to merge the results of resolving the promise and of deserializing the data into a single one, if you don’t need the extra flexibility.

Trait Implementations

impl Debug for LatestAtComponentResults

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

Formats the value using the given formatter.

impl SizeBytes for LatestAtComponentResults

fn heap_size_bytes(&self) -> u64

Returns the total size of self on the heap, in bytes.

fn total_size_bytes(&self) -> u64

Returns the total size of self in bytes, accounting for both stack and heap space.

fn stack_size_bytes(&self) -> u64

Returns the total size of self on the stack, in bytes.

fn is_pod() -> bool

Is Self just plain old data?