public static Migration Load(MigrationMemento memento, IImmutableDictionary <BigInteger, Migration> migrationsByHashCode)
{
switch (memento.Type)
{
case nameof(UseSchemaMigration):
return(UseSchemaMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreateTableMigration):
return(CreateTableMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreateColumnMigration):
return(CreateColumnMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreatePrimaryKeyMigration):
return(CreatePrimaryKeyMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreateUniqueIndexMigration):
return(CreateUniqueIndexMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreateIndexMigration):
return(CreateIndexMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CreateForeignKeyMigration):
return(CreateForeignKeyMigration.FromMemento(memento, migrationsByHashCode));
case nameof(CustomSqlMigration):
return(CustomSqlMigration.FromMemento(memento, migrationsByHashCode));
default:
throw new ArgumentException($"Unknown type {memento.Type}");
}
}
public UniqueIndexSpecification CreateUniqueIndex(params ColumnSpecification[] columns)
{
var childMigration = new CreateUniqueIndexMigration(
_migration,
columns.Select(c => c.Migration),
Prerequisites);
MigrationHistoryBuilder.Append(childMigration);
childMigration.AddToParent();
return(new UniqueIndexSpecification(childMigration, MigrationHistoryBuilder));
}
internal UniqueIndexSpecification(CreateUniqueIndexMigration migration, MigrationHistoryBuilder migrationHistoryBuilder) :
base(migrationHistoryBuilder)
{
_migration = migration;
}
