Struct Column

pub struct Column {
    pub column_name: String,
    pub semantic_type: i32,
    pub values: Option<Values>,
    pub null_mask: Vec<u8>,
    pub datatype: i32,
    pub datatype_extension: Option<ColumnDataTypeExtension>,
    pub options: Option<ColumnOptions>,
}

Fields

column_name: String

semantic_type: i32

values: Option<Values>

The array of non-null values in this column.

For example: suppose there is a column “foo” that contains some int32 values (1, 2, 3, 4, 5, null, 7, 8, 9, null); column: column_name: foo semantic_type: Tag values: 1, 2, 3, 4, 5, 7, 8, 9 null_masks: 00100000 00000010

null_mask: Vec<u8>

Mask maps the positions of null values. If a bit in null_mask is 1, it indicates that the column value at that position is null.

datatype: i32

Helpful in creating vector from column.

datatype_extension: Option<ColumnDataTypeExtension>

Extension for ColumnDataType.

options: Option<ColumnOptions>

Additional column options.

Implementations

impl Column

pub fn semantic_type(&self) -> SemanticType

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

pub fn set_semantic_type(&mut self, value: SemanticType)

Sets semantic_type to the provided enum value.

pub fn datatype(&self) -> ColumnDataType

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

pub fn set_datatype(&mut self, value: ColumnDataType)

Sets datatype to the provided enum value.

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl Default for Column

fn default() -> Column

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Column

fn deserialize<__D>( __deserializer: __D, ) -> Result<Column, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for Column

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 Column

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

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Column