Struct MergeNode 

pub struct MergeNode {
    pub upstream_actor_id: Vec<u32>,
    pub upstream_fragment_id: FragmentId,
    pub upstream_dispatcher_type: i32,
    pub fields: Vec<Field>,
    pub allow_empty_upstream: bool,
}

Fields

upstream_actor_id: Vec<u32>

👎Deprecated

WARNING: Use this field with caution.

upstream_actor_id stored in the plan node in Fragment meta model cannot be directly used. See compose_fragment. The field is deprecated because the upstream actor info is provided separately instead of injected here in the node.

upstream_fragment_id: FragmentId

upstream_dispatcher_type: i32

Type of the upstream dispatcher. If there’s always one upstream according to this type, the compute node may use the ReceiverExecutor as an optimization.

fields: Vec<Field>

👎Deprecated

The schema of input columns. Already deprecated.

allow_empty_upstream: bool

Allows this merge to have no upstream actors, either initially or after a MergeUpdate. When true, the merge must not use the singleton receiver optimization because a singleton receiver cannot transition to empty.

Implementations

impl MergeNode

pub fn upstream_dispatcher_type(&self) -> DispatcherType

Returns the enum value of upstream_dispatcher_type, or the default if the field is set to an invalid enum value.

pub fn set_upstream_dispatcher_type(&mut self, value: DispatcherType)

Sets upstream_dispatcher_type to the provided enum value.

impl MergeNode

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

👎Deprecated

pub fn get_upstream_fragment_id(&self) -> FragmentId

pub fn get_upstream_dispatcher_type( &self, ) -> Result<DispatcherType, PbFieldNotFound>

pub fn get_fields(&self) -> &Vec<Field>

👎Deprecated

pub fn get_allow_empty_upstream(&self) -> bool

Trait Implementations

impl Clone for MergeNode

fn clone(&self) -> MergeNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MergeNode

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

Formats the value using the given formatter.

impl Default for MergeNode

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MergeNode

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for MergeNode

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 MergeNode

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

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 MergeNode