Struct EventId

pub struct EventId {
    pub chain_id: ChainId,
    pub stream_id: StreamId,
    pub index: u32,
}

An event identifier.

Fields

chain_id: ChainId

The ID of the chain that generated this event.

stream_id: StreamId

The ID of the stream this event belongs to.

index: u32

The event index, i.e. the number of events in the stream before this one.

Implementations

impl EventId

pub async fn chain_id(&self, ctx: &Context<'_>) -> Result<&ChainId>

pub async fn stream_id(&self, ctx: &Context<'_>) -> Result<&StreamId>

pub async fn index(&self, ctx: &Context<'_>) -> Result<&u32>

Trait Implementations

impl Clone for EventId

fn clone(&self) -> EventId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ContainerType for EventId

async fn resolve_field(&self, ctx: &Context<'_>) -> ServerResult<Option<Value>>

Resolves a field value and outputs it as a json value async_graphql::Value.

fn collect_all_fields<'a>( &'a self, ctx: &ContextBase<'a, &'a Positioned<SelectionSet>>, fields: &mut Fields<'a>, ) -> Result<(), ServerError>

where Self: Send + Sync,

Collect all the fields of the container that are queried in the selection set.

fn find_entity( &self, _: &ContextBase<'_, &Positioned<Field>>, _params: &ConstValue, ) -> impl Future<Output = Result<Option<ConstValue>, ServerError>> + Send

Find the GraphQL entity with the given name from the parameter.

impl Debug for EventId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EventId

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for EventId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl OutputType for EventId

fn type_name() -> Cow<'static, str>

Type the name.

fn create_type_info(registry: &mut Registry) -> String

Create type information in the registry and return qualified typename.

async fn resolve( &self, ctx: &ContextSelectionSet<'_>, _field: &Positioned<Field>, ) -> ServerResult<Value>

Resolve an output value to async_graphql::Value.

fn qualified_type_name() -> String

Qualified typename.

fn introspection_type_name(&self) -> Cow<'static, str>

Introspection type name

impl PartialEq for EventId

fn eq(&self, other: &EventId) -> 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 Serialize for EventId

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl WitLoad for EventId

fn load<Instance>( memory: &Memory<'_, Instance>, location: GuestPointer, ) -> Result<Self, RuntimeError>

where Instance: InstanceWithMemory, <Instance::Runtime as Runtime>::Memory: RuntimeMemory<Instance>,

Loads an instance of the type from the location in the guest’s memory.

fn lift_from<Instance>( flat_layout: <Self::Layout as Layout>::Flat, memory: &Memory<'_, Instance>, ) -> Result<Self, RuntimeError>

where Instance: InstanceWithMemory, <Instance::Runtime as Runtime>::Memory: RuntimeMemory<Instance>,

Lifts an instance of the type from the flat_layout representation.

impl WitStore for EventId

fn store<Instance>( &self, memory: &mut Memory<'_, Instance>, location: GuestPointer, ) -> Result<(), RuntimeError>

where Instance: InstanceWithMemory, <Instance::Runtime as Runtime>::Memory: RuntimeMemory<Instance>,

Stores the type at the location in the guest’s memory.

fn lower<Instance>( &self, memory: &mut Memory<'_, Instance>, ) -> Result<<Self::Layout as Layout>::Flat, RuntimeError>

where Instance: InstanceWithMemory, <Instance::Runtime as Runtime>::Memory: RuntimeMemory<Instance>,

Lowers the type into its flat layout representation.

impl WitType for EventId

const SIZE: u32 = 88u32

The size of the type when laid out in memory.

type Layout = <HCons<ChainId, HCons<StreamId, HCons<u32, HNil>>> as WitType>::Layout

The layout of the type as fundamental types.

type Dependencies = HCons<ChainId, HCons<StreamId, HCons<u32, HNil>>>

Other WitTypes that this type depends on.

fn wit_type_name() -> Cow<'static, str>

Generates the WIT type name for this type.

fn wit_type_declaration() -> Cow<'static, str>

Generates the WIT type declaration for this type.

impl Eq for EventId

impl ObjectType for EventId

impl StructuralPartialEq for EventId