Struct datafusion_python::datafusion_common::arrow::ipc::convert::MessageBuffer

pub struct MessageBuffer(/* private fields */);

An owned container for a validated Message

Safely decoding a flatbuffer requires validating the various embedded offsets, see Verifier. This is a potentially expensive operation, and it is therefore desirable to only do this once. crate::root_as_message performs this validation on construction, however, it returns a Message borrowing the provided byte slice. This prevents storing this Message in the same data structure that owns the buffer, as this would require self-referential borrows.

MessageBuffer solves this problem by providing a safe API for a Message without a lifetime bound.

Implementations

impl MessageBuffer

pub fn try_new(buf: Buffer) -> Result<MessageBuffer, ArrowError>

Try to create a MessageBuffer from the provided Buffer

pub fn as_ref(&self) -> Message<'_>

Return the Message

Trait Implementations

impl Clone for MessageBuffer

fn clone(&self) -> MessageBuffer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MessageBuffer

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

Formats the value using the given formatter.