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接口 MigrationExecutor

public interface MigrationExecutor

Executes a migration.

方法概要

限定符和类型	方法和说明
boolean	canExecuteInTransaction() Whether the execution can take place inside a transaction.
void	execute(Context context) Executes the migration this executor is associated with.

方法详细资料

execute

void execute(Context context)
      throws SQLException

Executes the migration this executor is associated with.

参数:

context - The context to use to execute the migration against the DB.

抛出:

SQLException - when the execution of a statement failed.

canExecuteInTransaction

boolean canExecuteInTransaction()

Whether the execution can take place inside a transaction. Almost all implementation should return true. This however makes it possible to execute certain migrations outside a transaction. This is useful for databases like PostgreSQL and SQL Server where certain statement can only execute outside a transaction.

返回:

true if a transaction should be used (highly recommended), or false if not.