Enum LinkTableOp 

pub enum LinkTableOp {
    Link {
        table: String,
        local_columns: Vec<String>,
        local_values: Vec<Value>,
        remote_columns: Vec<String>,
        remote_values: Vec<Value>,
    },
    Unlink {
        table: String,
        local_columns: Vec<String>,
        local_values: Vec<Value>,
        remote_columns: Vec<String>,
        remote_values: Vec<Value>,
    },
}

A pending link table operation (for many-to-many relationships).

Variants

Link

Insert a link (relationship).

Fields

table: String

Link table name.

local_columns: Vec<String>

Local (parent) column names.

local_values: Vec<Value>

Local (parent) PK values (must match local_columns).

remote_columns: Vec<String>

Remote (child) column names.

remote_values: Vec<Value>

Remote (child) PK values (must match remote_columns).

Unlink

Delete a link (relationship).

Fields

table: String

Link table name.

local_columns: Vec<String>

Local (parent) column names.

local_values: Vec<Value>

Local (parent) PK values (must match local_columns).

remote_columns: Vec<String>

Remote (child) column names.

remote_values: Vec<Value>

Remote (child) PK values (must match remote_columns).

Implementations

impl LinkTableOp

pub fn link( table: impl Into<String>, local_column: impl Into<String>, local_value: Value, remote_column: impl Into<String>, remote_value: Value, ) -> Self

Create a link operation.

pub fn unlink( table: impl Into<String>, local_column: impl Into<String>, local_value: Value, remote_column: impl Into<String>, remote_value: Value, ) -> Self

Create an unlink operation.

pub fn link_multi( table: impl Into<String>, local_columns: Vec<String>, local_values: Vec<Value>, remote_columns: Vec<String>, remote_values: Vec<Value>, ) -> Self

Create a link operation for composite keys.

pub fn unlink_multi( table: impl Into<String>, local_columns: Vec<String>, local_values: Vec<Value>, remote_columns: Vec<String>, remote_values: Vec<Value>, ) -> Self

Create an unlink operation for composite keys.

pub fn table(&self) -> &str

Get the table name.

pub fn is_link(&self) -> bool

Check if this is a link (insert) operation.

pub fn is_unlink(&self) -> bool

Check if this is an unlink (delete) operation.

pub fn to_sql(&self) -> String

Generate the SQL that would be executed for this operation.

Useful for testing and debugging.

pub async fn execute<C: Connection>( &self, cx: &Cx, conn: &C, ) -> Outcome<(), Error>

Execute this link table operation.

Trait Implementations

impl Clone for LinkTableOp

fn clone(&self) -> LinkTableOp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LinkTableOp

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

Formats the value using the given formatter.