Struct RowChange 

pub struct RowChange {
    pub table: String,
    pub op: ChangeOp,
    pub columns: Vec<Option<String>>,
    /* private fields */
}

One row change extracted from a changeset.

columns holds the row’s column values in schema order. Inserts and updates contain the resulting values; deletes contain the removed values. Unchanged update columns are filled from the old side so primary keys and foreign keys remain available.

None means SQL NULL or a column absent from the changeset.

Fields

table: String

op: ChangeOp

columns: Vec<Option<String>>

Implementations

impl RowChange

pub fn new( table: String, op: ChangeOp, columns: Vec<Option<String>>, changed_columns: Vec<bool>, ) -> Self

Build a row change from equally sized column-value and changed-column vectors. The decoder is the sole producer; keeping the marker beside the decoded row preserves SQLite’s distinction between an unchanged value copied from the old side and a value written by this UPDATE.

pub fn pk(&self) -> Option<&str>

The primary key (column 0).

pub fn col(&self, i: usize) -> Option<&str>

A column value by index.

pub fn column_changed(&self, i: usize) -> bool

Whether this column was written by the change. Inserts and deletes affect every value in their row; updates mark only values present on SQLite’s new side, even though Self::col fills unchanged values from the old side.

Trait Implementations

impl Clone for RowChange

fn clone(&self) -> RowChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowChange

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

Formats the value using the given formatter.