Struct LogicalTable

#[non_exhaustive]
pub struct LogicalTable {
    pub alias: String,
    pub data_transforms: Option<Vec<TransformOperation>>,
    pub source: Option<LogicalTableSource>,
}

A logical table is a unit that joins and that data transformations operate on. A logical table has a source, which can be either a physical table or result of a join. When a logical table points to a physical table, the logical table acts as a mutable copy of that physical table through transform operations.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

alias: String

A display name for the logical table.

data_transforms: Option<Vec<TransformOperation>>

Transform operations that act on this logical table. For this structure to be valid, only one of the attributes can be non-null.

source: Option<LogicalTableSource>

Source of this logical table.

Implementations

impl LogicalTable

pub fn alias(&self) -> &str

A display name for the logical table.

pub fn data_transforms(&self) -> &[TransformOperation]

Transform operations that act on this logical table. For this structure to be valid, only one of the attributes can be non-null.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .data_transforms.is_none().

pub fn source(&self) -> Option<&LogicalTableSource>

Source of this logical table.

impl LogicalTable

pub fn builder() -> LogicalTableBuilder

Creates a new builder-style object to manufacture LogicalTable.

Trait Implementations

impl Clone for LogicalTable

fn clone(&self) -> LogicalTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogicalTable

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

Formats the value using the given formatter.

impl PartialEq for LogicalTable

fn eq(&self, other: &LogicalTable) -> bool

Tests for self and other values to be equal, and is used by ==.

const 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 LogicalTable