Enum FetchDirection 

pub enum FetchDirection {
    ForwardOnly,
    Bidirectional,
}

Available on crate feature core only.

Direction mode for an infinite query.

Controls the default assumptions for has_next_page and has_previous_page on construction and after reset().

• ForwardOnly (default): has_next_page starts true, has_previous_page starts false. This is the common case for feed-style pagination where you only fetch next pages. The true default for has_next_page assumes more pages exist until the fetcher says otherwise.

• Bidirectional: Both has_next_page and has_previous_page start false. The query will not attempt to fetch in either direction until the caller explicitly sets has_next_page(true) or has_previous_page(true), or the fetcher returns has_more = true from a successful completion.

Variants

ForwardOnly

Fetch next pages only. has_next_page defaults to true.

Bidirectional

Fetch in both directions. Both flags default to false.

Trait Implementations

impl Clone for FetchDirection

fn clone(&self) -> FetchDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FetchDirection

impl Debug for FetchDirection

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

Formats the value using the given formatter.

impl Default for FetchDirection

fn default() -> FetchDirection

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FetchDirection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FetchDirection

impl PartialEq for FetchDirection

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FetchDirection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FetchDirection