Struct FetchView 

pub struct FetchView {
    pub instrument: String,
    pub source: String,
    pub interval: String,
    pub bars: u32,
    pub interpolated: u32,
    pub from: Option<String>,
    pub to: Option<String>,
    pub data_findings: Vec<DataFindingView>,
    pub revision: Option<String>,
    pub revised: bool,
    pub dividends: Option<u32>,
}

Every shape at the root as well, because a window names a view on nearly every line and arvo_api::research::StudyView would be noise. The names do not collide: proto has no overloading and neither does this. What a fetch pulled in.

Fields

instrument: String

source: String

Which source answered. Part of the result rather than assumed, now that it is a choice: two vendors’ copies of one ticker are two datasets.

interval: String

bars: u32

interpolated: u32

Gap-fill bars the server synthesised, which were dropped. Surfaced rather than hidden: a series that is a quarter invented is one to know about before drawing a conclusion from it.

from: Option<String>

to: Option<String>

data_findings: Vec<DataFindingView>

revision: Option<String>

What changed against the copy already held, when there was one.

A re-fetch that rewrites history stales every finding on the instrument, correctly, via the content hash. This says why it changed — a re-adjustment after a corporate action leaves the underlying facts intact, a revision does not, and the two want different responses.

revised: bool

True only when the change was a genuine disagreement about prices, rather than a rescaling or extra coverage.

dividends: Option<u32>

Cash distributions stored alongside the bars.

None means the source does not serve dividends at all, which is a different fact from Some(0) — it looked, and the instrument paid none. Collapsing the two would report “no dividends” for an instrument that pays them, which is the direction the platform’s excess-return bias already leans.

Implementations

impl FetchView

pub fn from(&self) -> &str

Returns the value of from, or the default value if from is unset.

pub fn to(&self) -> &str

Returns the value of to, or the default value if to is unset.

pub fn revision(&self) -> &str

Returns the value of revision, or the default value if revision is unset.

pub fn dividends(&self) -> u32

Returns the value of dividends, or the default value if dividends is unset.

Trait Implementations

impl Clone for FetchView

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FetchView

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

Formats the value using the given formatter.

impl Default for FetchView

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FetchView

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for FetchView

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for FetchView

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FetchView

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 FetchView