Struct RowSeqScanNode 

pub struct RowSeqScanNode {
    pub table_desc: Option<StorageTableDesc>,
    pub column_ids: Vec<i32>,
    pub scan_ranges: Vec<ScanRange>,
    pub vnode_bitmap: Option<Buffer>,
    pub ordered: bool,
    pub limit: Option<u64>,
    pub query_epoch: Option<BatchQueryEpoch>,
}

Fields

table_desc: Option<StorageTableDesc>

column_ids: Vec<i32>

scan_ranges: Vec<ScanRange>

All the ranges need to be read. i.e., they are OR’ed.

Empty scan_ranges means full table scan.

vnode_bitmap: Option<Buffer>

The partition to read for scan tasks.

Will be filled by the scheduler.

ordered: bool

Whether the order on output columns should be preserved.

limit: Option<u64>

The pushed down batch_limit. Max rows needed to return.

query_epoch: Option<BatchQueryEpoch>

Implementations

impl RowSeqScanNode

pub fn limit(&self) -> u64

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

impl RowSeqScanNode

pub fn get_table_desc(&self) -> Result<&StorageTableDesc, PbFieldNotFound>

pub fn get_column_ids(&self) -> &Vec<i32>

pub fn get_scan_ranges(&self) -> &Vec<ScanRange>

pub fn get_vnode_bitmap(&self) -> Result<&Buffer, PbFieldNotFound>

pub fn get_ordered(&self) -> bool

pub fn get_limit(&self) -> Result<&u64, PbFieldNotFound>

pub fn get_query_epoch(&self) -> Result<&BatchQueryEpoch, PbFieldNotFound>

Trait Implementations

impl Clone for RowSeqScanNode

fn clone(&self) -> RowSeqScanNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowSeqScanNode

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

Formats the value using the given formatter.

impl Default for RowSeqScanNode

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RowSeqScanNode

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for RowSeqScanNode

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 RowSeqScanNode

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

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 RowSeqScanNode