Connection class abstract
A connection to a PostgreSQL database.
Constructors
Properties
- backendPid → int?
-
The pid of the process the server started to handle this connection.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
-
messages
→ Stream<
Message> -
The server can send errors and notices, or the network can cause errors
while the connection is not being used to make a query. These can be
caught by listening to the messages stream. See ClientMessage and
ServerMessage for more information.
no setter
-
parameters
→ Map<
String, String> -
Server configuration parameters such as date format and timezone.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- state → ConnectionState
-
The current state of the connection.
no setter
- transactionState → TransactionState
-
The state of the current transaction.
no setter
Methods
-
close(
) → void - Close the current Connection. It is safe to call this multiple times. This will never throw an exception.
-
execute(
String sql, [Map? values]) → Future< int> - Queues a command for execution, and when done, returns the number of rows affected by the sql command. Indentical to query apart from the information returned.
-
executeByList(
String sql, List? values) → Future< int> - Queues a command for execution, and when done, returns the number of rows affected by the sql command. Indentical to queryByList apart from the information returned.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
query(
String sql, [Map? values]) → Stream< Row> - Queue a sql query to be run, returning a Stream of Rows.
-
queryByList(
String sql, List? values) → Stream< Row> -
Queue a sql query to be run, returning a Stream of Rows.
The results can be fetched from the Rows by index.
Identical to query apart from the
valuesmust be a list. -
runInTransaction<
T> (Future< T> operation(), [Isolation isolation]) → Future<T> - Allow multiple queries to be run in a transaction. The user must wait for runInTransaction() to complete before making any further queries.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited