Struct MDQueryBatchingParams

#[repr(C)]
pub struct MDQueryBatchingParams {
    pub first_max_num: usize,
    pub first_max_ms: usize,
    pub progress_max_num: usize,
    pub progress_max_ms: usize,
    pub update_max_num: usize,
    pub update_max_ms: usize,
}

Available on crate features MDQuery and Metadata only.

Structure containing the progress notification batching parameters of an MDQuery. The first notification can be triggered by the either first_max_num or first_max_ms limit being exceeded. Subsequent notifications are triggered by either the progress_max_num or progress_max_ms limit. The default batching parameters are undefined and subject to change. Field: first_max_num The maximum number of results that can accumulate before a progress notification is sent out by the MDQuery, for the first notification. Field: first_max_ms The maximum number of milliseconds that can pass before a progress notification is sent out. This value is advisory, in that the notification will be triggered “at some point after first_max_ms milliseconds have passed since the query began accumulating results”, but generally not very long after, for the first progress notification. Field: progress_max_num The maximum number of results that can accumulate before a progress notification is sent out by the MDQuery, for notifications after the first, during the initial gathering phase of the query. Field: progress_max_ms The maximum number of milliseconds that can pass before a progress notification is sent out. This value is advisory, in that the notification will be triggered “at some point after first_max_ms milliseconds have passed since the query began accumulating results”, but generally not very long after, for progress notifications after the first, during the initial gathering phase of the query. Field: update_max_num The maximum number of results that can accumulate before an update notification is sent out by the MDQuery, for notifications after the gathering phase of the query has finished. Field: update_max_ms The maximum number of milliseconds that can pass before a progress notification is sent out. This value is advisory, in that the notification will be triggered “at some point after first_max_ms milliseconds have passed since the query began accumulating results”, but generally not very long after, for update notifications after the gathering phase of the query has finished.

See also Apple’s documentation

Fields

first_max_num: usize

first_max_ms: usize

progress_max_num: usize

progress_max_ms: usize

update_max_num: usize

update_max_ms: usize

Trait Implementations

impl Clone for MDQueryBatchingParams

fn clone(&self) -> MDQueryBatchingParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MDQueryBatchingParams

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

Formats the value using the given formatter.

impl Encode for MDQueryBatchingParams

Available on crate feature objc2 only.

const ENCODING: Encoding

The Objective-C type-encoding for this type.

impl PartialEq for MDQueryBatchingParams

fn eq(&self, other: &MDQueryBatchingParams) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for MDQueryBatchingParams

Available on crate feature objc2 only.

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for MDQueryBatchingParams

impl StructuralPartialEq for MDQueryBatchingParams