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This commit is contained in:
Robert Habermeier 2017-02-26 19:11:19 +01:00
parent c2c699abb9
commit ed0a2567d8
1 changed files with 4 additions and 1 deletions
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util/src/migration/mod.rs
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@ -169,8 +169,11 @@ impl<T: SimpleMigration> Migration for T {
/// An even simpler migration which just changes the number of columns.
pub struct ChangeColumns {
/// The amount of columns before this migration.
pub pre_columns: Option<u32>,
/// The amount of columns after this migration.
pub post_columns: Option<u32>,
/// The version after this migration.
pub version: u32,
}
@ -277,11 +280,11 @@ impl Manager {
// Change number of columns in new db
let current_columns = db_config.columns;
db_config.columns = migration.columns();
temp_path = temp_idx.path(&db_root);
// slow migrations: alter existing data.
if migration.alters_existing() {
// open the target temporary database.
temp_path = temp_idx.path(&db_root);
let temp_path_str = temp_path.to_str().ok_or(Error::MigrationImpossible)?;
let mut new_db = Database::open(&db_config, temp_path_str).map_err(Error::Custom)?;