Struct SchemaManager 

pub struct SchemaManager<'c> { /* private fields */ }

Runs DDL inside the migration’s transaction and inspects the catalog.

Implementations

impl<'c> SchemaManager<'c>

pub fn new(conn: &'c Transaction) -> Self

Wraps a transaction.

pub fn get_connection(&self) -> &'c Transaction

The transaction the migration runs in, for data migrations and raw statements.

pub async fn exec_stmt(&self, stmt: impl Build) -> Result<(), DbErr>

Executes any DDL or DML statement builder.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn create_table(&self, stmt: CreateTable) -> Result<(), DbErr>

Executes a CREATE TABLE.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn alter_table(&self, stmt: AlterTable) -> Result<(), DbErr>

Executes an ALTER TABLE.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn drop_table(&self, stmt: DropTable) -> Result<(), DbErr>

Executes a DROP TABLE.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn create_index(&self, stmt: CreateIndex) -> Result<(), DbErr>

Executes a CREATE INDEX.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn drop_index(&self, stmt: DropIndex) -> Result<(), DbErr>

Executes a DROP INDEX.

Errors

Returns DbErr::Driver when the statement fails.

pub async fn has_table(&self, table: &str) -> Result<bool, DbErr>

Whether a table named table exists.

Errors

Returns DbErr::Migration when the catalog query returns no row; DbErr::Driver when the query fails.

pub async fn has_column(&self, table: &str, column: &str) -> Result<bool, DbErr>

Whether table has a column named column.

Errors

Returns DbErr::Migration when the catalog query returns no row; DbErr::Driver when the query fails.

pub async fn has_index(&self, index: &str) -> Result<bool, DbErr>

Whether an index named index exists.

Errors

Returns DbErr::Migration when the catalog query returns no row; DbErr::Driver when the query fails.

Trait Implementations

impl<'c> Debug for SchemaManager<'c>

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

Formats the value using the given formatter.