Struct LocalRelation

pub struct LocalRelation {
    pub data: Option<Vec<u8>>,
    pub schema: Option<String>,
}

A relation that does not need to be qualified by name.

Fields

data: Option<Vec<u8>>

(Optional) Local collection data serialized into Arrow IPC streaming format which contains the schema of the data.

schema: Option<String>

(Optional) The schema of local data. It should be either a DDL-formatted type string or a JSON string.

The server side will update the column names and data types according to this schema. If the ‘data’ is not provided, then this schema will be required.

Implementations

impl LocalRelation

pub fn data(&self) -> &[u8]

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

pub fn schema(&self) -> &str

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

Trait Implementations

impl Clone for LocalRelation

fn clone(&self) -> LocalRelation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LocalRelation

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

Formats the value using the given formatter.

impl Default for LocalRelation

fn default() -> Self

Returns the “default value” for a type.

impl Message for LocalRelation

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<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, 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<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, 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<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

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

where B: Buf, Self: Default,

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

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

where B: Buf, Self: Sized,

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

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

where B: Buf, Self: Sized,

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

impl PartialEq for LocalRelation

fn eq(&self, other: &LocalRelation) -> 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 StructuralPartialEq for LocalRelation