Struct StreamFragment

pub struct StreamFragment {
    pub fragment_id: u32,
    pub node: Option<StreamNode>,
    pub fragment_type_mask: u32,
    pub requires_singleton: bool,
    pub table_ids_cnt: u32,
    pub upstream_table_ids: Vec<u32>,
}

Fields

fragment_id: u32

0-based on frontend, and will be rewritten to global id on meta.

node: Option<StreamNode>

root stream node in this fragment.

fragment_type_mask: u32

Bitwise-OR of FragmentTypeFlags

requires_singleton: bool

Mark whether this fragment requires exactly one actor. Note: if this is false, the fragment may still be a singleton according to the scheduler. One should check meta.Fragment.distribution_type for the final result.

table_ids_cnt: u32

Number of table ids (stateful states) for this fragment.

upstream_table_ids: Vec<u32>

Mark the upstream table ids of this fragment, Used for fragments with StreamScans.

Implementations

impl StreamFragment

pub fn get_fragment_id(&self) -> u32

pub fn get_node(&self) -> Result<&StreamNode, PbFieldNotFound>

pub fn get_fragment_type_mask(&self) -> u32

pub fn get_requires_singleton(&self) -> bool

pub fn get_table_ids_cnt(&self) -> u32

pub fn get_upstream_table_ids(&self) -> &Vec<u32>

Trait Implementations

impl Clone for StreamFragment

fn clone(&self) -> StreamFragment

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StreamFragment

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

Formats the value using the given formatter.

impl Default for StreamFragment

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StreamFragment

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for StreamFragment

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 StreamFragment

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

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 StreamFragment