Class | Sequel::Amalgalite::Database |
In: |
lib/sequel/adapters/amalgalite.rb
|
Parent: | Sequel::Database |
Connect to the database. Since SQLite is a file based database, the only options available are :database (to specify the database name), and :timeout, to specify how long to wait for the database to be available if it is locked, given in milliseconds (default is 5000).
# File lib/sequel/adapters/amalgalite.rb, line 66 66: def connect(server) 67: opts = server_opts(server) 68: opts[:database] = ':memory:' if blank_object?(opts[:database]) 69: db = ::Amalgalite::Database.new(opts[:database]) 70: db.busy_handler(::Amalgalite::BusyTimeout.new(opts.fetch(:timeout, 5000)/50, 50)) 71: db.type_map = SequelTypeMap.new 72: db 73: end
Amalgalite is just the SQLite database without a separate SQLite installation.
# File lib/sequel/adapters/amalgalite.rb, line 76 76: def database_type 77: :sqlite 78: end
Return instance of Sequel::Amalgalite::Dataset with the given options.
# File lib/sequel/adapters/amalgalite.rb, line 81 81: def dataset(opts = nil) 82: Amalgalite::Dataset.new(self, opts) 83: end
Run the given SQL with the given arguments and yield each row.
# File lib/sequel/adapters/amalgalite.rb, line 102 102: def execute(sql, opts={}) 103: retried = false 104: _execute(sql, opts) do |conn| 105: conn.prepare(sql) do |stmt| 106: begin 107: stmt.result_meta 108: rescue NoMethodError 109: conn.reload_schema! 110: stmt.result_meta 111: end 112: yield stmt 113: end 114: end 115: end
Use the native driver transaction method if there isn‘t already a transaction in progress on the connection, always yielding a connection inside a transaction transaction.
# File lib/sequel/adapters/amalgalite.rb, line 125 125: def transaction(opts={}) 126: synchronize(opts[:server]) do |conn| 127: return yield(conn) if conn.in_transaction? 128: begin 129: result = nil 130: log_info('Transaction.begin') 131: conn.transaction{result = yield(conn)} 132: result 133: rescue ::Exception => e 134: log_info('Transaction.rollback') 135: transaction_error(e, ::Amalgalite::Error, ::Amalgalite::SQLite3::Error) 136: ensure 137: log_info('Transaction.commit') unless e 138: end 139: end 140: end