Struct OutputStream

pub struct OutputStream {

    pub name: String,
    pub kind: OutputKind,
    pub ty: Type,
    pub spawn: Spawn,
    pub eval: Eval,
    pub close: Close,
    pub accesses: Vec<(StreamReference, Vec<(Origin, StreamAccessKind)>)>,
    pub accessed_by: Vec<(StreamReference, Vec<(Origin, StreamAccessKind)>)>,
    pub aggregated_by: Vec<(StreamReference, Origin, WindowReference)>,
    pub aggregates: Vec<(StreamReference, Origin, WindowReference)>,
    pub memory_bound: MemorizationBound,
    pub layer: StreamLayers,
    pub reference: StreamReference,
    pub params: Vec<Parameter>,
    pub tags: HashMap<String, Option<String>>,
}

Contains all information relevant to every kind of output stream.

Refer to TimeDrivenStream, EventDrivenStream, and Trigger, as well as their respective fields in the Mir for additional information.

Fields

name: String

The name of the stream.

kind: OutputKind

The kind of the output (regular output or trigger)

ty: Type

The value type of the stream.

spawn: Spawn

Information on the spawn behavior of the stream

eval: Eval

Information on the evaluation behavior of the stream

close: Close

The condition under which the stream is supposed to be closed

accesses: Vec<(StreamReference, Vec<(Origin, StreamAccessKind)>)>

The collection of streams this stream accesses non-transitively. Includes this stream’s spawn, evaluation condition, and close expressions.

accessed_by: Vec<(StreamReference, Vec<(Origin, StreamAccessKind)>)>

The collection of streams that access the current stream non-transitively

aggregated_by: Vec<(StreamReference, Origin, WindowReference)>

The collection of windows that access this stream non-transitively. This includes both sliding and discrete windows.

aggregates: Vec<(StreamReference, Origin, WindowReference)>

The collection of windows that is accessed by this stream. This includes both sliding and discrete windows.

memory_bound: MemorizationBound

Provides the number of values of this stream’s type that need to be memorized. Refer to Type::size to get a type’s byte-size.

layer: StreamLayers

Provides the evaluation of layer of this stream.

reference: StreamReference

The reference referring to this stream

params: Vec<Parameter>

The parameters of a parameterized output stream; The vector is empty in non-parametrized streams

tags: HashMap<String, Option<String>>

The tags annotated to this stream.

Trait Implementations

impl Clone for OutputStream

fn clone(&self) -> OutputStream

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OutputStream

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OutputStream

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for OutputStream

fn eq(&self, other: &OutputStream) -> 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 OutputStream

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Stream for OutputStream

fn spawn_layer(&self) -> Layer

Reports the evaluation layer of the spawn condition of the stream.

fn eval_layer(&self) -> Layer

Reports the evaluation layer of the stream.

fn name(&self) -> &str

Reports the name of the stream.

fn ty(&self) -> &Type

Returns the type of the stream.

fn is_input(&self) -> bool

Indicates whether or not the stream is an input stream.

fn is_parameterized(&self) -> bool

Indicates whether or not the stream has parameters.

fn is_spawned(&self) -> bool

Indicates whether or not the stream spawned / dynamically created.

fn is_closed(&self) -> bool

Indicates whether or not the stream is closed.

fn is_eval_filtered(&self) -> bool

Indicated whether or not the stream is filtered.

fn values_to_memorize(&self) -> MemorizationBound

Indicates how many values of the stream’s Type need to be memorized.

fn as_stream_ref(&self) -> StreamReference

Produces a stream references referring to the stream.

fn accessed_by( &self, ) -> &Vec<(StreamReference, Vec<(Origin, StreamAccessKind)>)>

Returns the collection of streams that access the stream non-transitively.

fn aggregated_by(&self) -> &[(StreamReference, Origin, WindowReference)]

Returns the collection of sliding windows that access the stream non-transitively. This includes both sliding and discrete windows.

fn aggregates(&self) -> &[(StreamReference, Origin, WindowReference)]

Returns the collection of sliding windows that are accessed by the stream non-transitively. This includes both sliding and discrete windows.

fn tags(&self) -> &HashMap<String, Option<String>>

Returns the tags annotated to this stream.

impl StructuralPartialEq for OutputStream