Struct EdgePlan 

pub struct EdgePlan {
    pub table: String,
    pub from_label: String,
    pub rel: String,
    pub to_label: String,
    pub from_key: String,
    pub to_key: String,
    pub from_col: String,
    pub to_col: String,
    pub props: Vec<String>,
    pub tier: Tier,
}

An edge projection: a directed relationship from → to.

Fields

table: String

The source table the edge rows are read from.

from_label: String

The tail (child / “many”) node label.

rel: String

The relationship type (SCREAMING_SNAKE).

to_label: String

The head (parent / “one”) node label.

from_key: String

The tail node’s merge-key property — the property name the from node is identified/MERGEd by in the graph (its id_column). This is the property NAME on the node, which is NOT necessarily the column the value is read from — see Self::from_col.

to_key: String

The head node’s merge-key property — the property name the to node is identified/MERGEd by in the graph (its id_column). For a self-ref / renamed FK this differs from the column the value is read from (Self::to_col): e.g. Employee-REPORTS_TO->Employee MERGEs on employee_id but reads the endpoint value from the manager_id column.

from_col: String

The column in table the tail endpoint VALUE is read from (src.column). Usually equal to Self::from_key; differs only when the tail FK column is named differently from the node’s key.

to_col: String

The column in table the head endpoint VALUE is read from (dst.column, i.e. the FK column). Differs from Self::to_key for a self-ref / renamed FK (manager_id read, MERGEd on employee_id).

props: Vec<String>

Edge property columns, ordinal order.

tier: Tier

Where this edge’s authority came from.

Trait Implementations

impl Clone for EdgePlan

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EdgePlan

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

Formats the value using the given formatter.

impl Eq for EdgePlan

impl PartialEq for EdgePlan

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EdgePlan