Struct ObjectPreconditions 

#[non_exhaustive]
pub struct ObjectPreconditions {
    pub if_generation_match: Option<i64>,
    /* private fields */
}

Preconditions for a source object of a composition request.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

if_generation_match: Option<i64>

Only perform the composition if the generation of the source object that would be used matches this value. If this value and a generation are both specified, they must be the same value or the call fails.

Implementations

impl ObjectPreconditions

pub fn new() -> Self

pub fn set_if_generation_match<T>(self, v: T) -> Self

where T: Into<i64>,

Sets the value of if_generation_match.

pub fn set_or_clear_if_generation_match<T>(self, v: Option<T>) -> Self

where T: Into<i64>,

Sets or clears the value of if_generation_match.

Trait Implementations

impl Clone for ObjectPreconditions

fn clone(&self) -> ObjectPreconditions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObjectPreconditions

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

Formats the value using the given formatter.

impl Default for ObjectPreconditions

fn default() -> ObjectPreconditions

Returns the “default value” for a type.

impl Message for ObjectPreconditions

fn typename() -> &'static str

The typename of this message.

impl PartialEq for ObjectPreconditions

fn eq(&self, other: &ObjectPreconditions) -> 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 StructuralPartialEq for ObjectPreconditions