Struct FFI_ArrowArrayStream

#[repr(C)]
pub struct FFI_ArrowArrayStream {
    pub get_schema: Option<unsafe extern "C" fn(arg1: *mut Self, out: *mut FFI_ArrowSchema) -> c_int>,
    pub get_next: Option<unsafe extern "C" fn(arg1: *mut Self, out: *mut FFI_ArrowArray) -> c_int>,
    pub get_last_error: Option<unsafe extern "C" fn(arg1: *mut Self) -> *const c_char>,
    pub release: Option<unsafe extern "C" fn(arg1: *mut Self)>,
    pub private_data: *mut c_void,
}

ABI-compatible struct for ArrayStream from C Stream Interface See https://arrow.apache.org/docs/format/CStreamInterface.html#structure-definitions This was created by bindgen

Fields

get_schema: Option<unsafe extern "C" fn(arg1: *mut Self, out: *mut FFI_ArrowSchema) -> c_int>

C function to get schema from the stream

get_next: Option<unsafe extern "C" fn(arg1: *mut Self, out: *mut FFI_ArrowArray) -> c_int>

C function to get next array from the stream

get_last_error: Option<unsafe extern "C" fn(arg1: *mut Self) -> *const c_char>

C function to get the error from last operation on the stream

release: Option<unsafe extern "C" fn(arg1: *mut Self)>

C function to release the stream

private_data: *mut c_void

Private data used by the stream

Implementations

impl FFI_ArrowArrayStream

pub fn new(batch_reader: Box<dyn RecordBatchReader + Send>) -> Self

Creates a new FFI_ArrowArrayStream.

pub unsafe fn from_raw(raw_stream: *mut FFI_ArrowArrayStream) -> Self

Takes ownership of the pointed to FFI_ArrowArrayStream

This acts to move the data out of raw_stream, setting the release callback to NULL

Safety

• raw_stream must be valid for reads and writes
• raw_stream must be properly aligned
• raw_stream must point to a properly initialized value of FFI_ArrowArrayStream

pub fn empty() -> Self

Creates a new empty FFI_ArrowArrayStream. Used to import from the C Stream Interface.

Trait Implementations

impl Debug for FFI_ArrowArrayStream

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

Formats the value using the given formatter.

impl Drop for FFI_ArrowArrayStream

fn drop(&mut self)

Executes the destructor for this type.

impl Send for FFI_ArrowArrayStream