Struct WithColumnsRenamed

pub struct WithColumnsRenamed {
    pub input: Option<Box<Relation>>,
    pub rename_columns_map: HashMap<String, String>,
}

Rename columns on the input relation by a map with name to name mapping.

Fields

input: Option<Box<Relation>>

(Required) The input relation.

rename_columns_map: HashMap<String, String>

(Required)

Renaming column names of input relation from A to B where A is the map key and B is the map value. This is a no-op if schema doesn’t contain any A. It does not require that all input relation column names to present as keys. duplicated B are not allowed.

Trait Implementations

impl Clone for WithColumnsRenamed

fn clone(&self) -> WithColumnsRenamed

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WithColumnsRenamed

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

Formats the value using the given formatter.

impl Default for WithColumnsRenamed

fn default() -> Self

Returns the “default value” for a type.

impl Message for WithColumnsRenamed

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 WithColumnsRenamed

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