IsolationLevel enum
The isolation level of a transaction determines what data the transaction can see when other transactions are running concurrently.
Values
- readCommitted → const IsolationLevel
-
A statement can only see rows committed before it began. This is the default.
const IsolationLevel._('READ COMMITTED')
- repeatableRead → const IsolationLevel
-
All statements of the current transaction can only see rows committed before the first query or data-modification statement was executed in this transaction.
const IsolationLevel._('REPEATABLE READ')
- serializable → const IsolationLevel
-
All statements of the current transaction can only see rows committed before the first query or data-modification statement was executed in this transaction. If a pattern of reads and writes among concurrent serializable transactions would create a situation which could not have occurred for any serial (one-at-a-time) execution of those transactions, one of them will be rolled back with a serialization_failure error.
const IsolationLevel._('SERIALIZABLE')
- readUncommitted → const IsolationLevel
-
One transaction may see uncommitted changes made by some other transaction. In PostgreSQL READ UNCOMMITTED is treated as READ COMMITTED.
const IsolationLevel._('READ UNCOMMITTED')
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int
-
A numeric identifier for the enumerated value.
no setterinherited
- queryPart → String
-
The SQL identifier of the isolation level including "ISOLATION LEVEL" prefix
and leading space.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
-
values
→ const List<
IsolationLevel> - A constant List of the values in this enum, in order of their declaration.