Struct Migration 

pub struct Migration {
    pub from_version: SchemaVersion,
    pub to_version: SchemaVersion,
    pub changes: Vec<SchemaChange>,
}

Migration between two schema versions

Fields

from_version: SchemaVersion

to_version: SchemaVersion

changes: Vec<SchemaChange>

Implementations

impl Migration

pub fn new(from: SchemaVersion, to: SchemaVersion) -> Self

pub fn add_column( self, name: impl Into<String>, column_type: SochType, default: SochValue, ) -> Self

pub fn add_column_at( self, name: impl Into<String>, column_type: SochType, default: SochValue, position: usize, ) -> Self

pub fn drop_column(self, name: impl Into<String>) -> Self

pub fn rename_column( self, old_name: impl Into<String>, new_name: impl Into<String>, ) -> Self

pub fn change_type( self, name: impl Into<String>, new_type: SochType, converter: TypeConverter, ) -> Self

Trait Implementations

impl Clone for Migration

fn clone(&self) -> Migration

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Migration

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

Formats the value using the given formatter.