Enum ExpressionOwner 

pub enum ExpressionOwner<'a> {
    Table {
        table: &'a str,
    },
    Column {
        table: &'a str,
        column: &'a str,
    },
    Measure {
        table: &'a str,
        measure: &'a str,
    },
    Partition {
        table: &'a str,
        partition: &'a str,
    },
    Role {
        role: &'a str,
    },
    CalculationItem {
        table: &'a str,
        item: &'a str,
    },
    Expression {
        name: &'a str,
    },
    Function {
        name: &'a str,
    },
    ReportMeasure {
        measure: &'a str,
    },
}

The model or report object an enumerated expression belongs to.

Names are borrowed from the AST, so enumerating a model’s expressions allocates nothing. Call to_object_id to materialize a graph node key — once per node the graph actually creates, rather than once per expression.

The variants are exactly the objects that can own an expression, which is why there is no hierarchy here: hierarchies reference columns but define no DAX. The one report-side variant is the report-level measure, whose DAX body is an expression source the model knows nothing about (see crate::report::ReportModel::dax_expressions).

Variants

Table

A table, owning its detail-rows expression.

Fields

table: &'a str

Table name.

Column

A calculated column.

Fields

table: &'a str

Owning table.

column: &'a str

Column name.

Measure

A measure, owning its expression, format string, detail rows, and KPI.

Fields

table: &'a str

Home table.

measure: &'a str

Measure name.

Partition

A partition, owning its M or DAX source query.

Fields

table: &'a str

Owning table.

partition: &'a str

Partition name.

Role

A security role, owning its row-level-security filters.

Fields

role: &'a str

Role name.

CalculationItem

A calculation item.

Fields

table: &'a str

Calculation group table.

item: &'a str

Calculation item name.

Expression

A model-level shared M expression.

Fields

name: &'a str

Expression name.

Function

A user-defined DAX function.

Fields

name: &'a str

Function name.

ReportMeasure

A report-level measure (reportExtensions.json), owning its expression and dynamic format string. Lives in the report, not the model.

Fields

measure: &'a str

Measure name, report-scoped.

Implementations

impl ExpressionOwner<'_>

pub fn to_object_id(&self) -> ObjectId

The owner’s stable graph-node identity, allocating the owned name keys.

Trait Implementations

impl<'a> Clone for ExpressionOwner<'a>

fn clone(&self) -> ExpressionOwner<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for ExpressionOwner<'a>

impl<'a> Debug for ExpressionOwner<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for ExpressionOwner<'a>

impl<'a> Hash for ExpressionOwner<'a>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> PartialEq for ExpressionOwner<'a>

fn eq(&self, other: &ExpressionOwner<'a>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<'a> StructuralPartialEq for ExpressionOwner<'a>