QueryLogger class abstract interface

Interface for query logging.

Implement this interface to receive notifications about query execution. This is useful for debugging, performance monitoring, and audit logging.

Example:

class MyLogger implements QueryLogger {
  @override
  void onQueryStart(QueryStartEvent event) {
    print('Starting: ${event.sql}');
  }

  @override
  void onQueryEnd(QueryEndEvent event) {
    print('[${event.duration.inMilliseconds}ms] ${event.sql}');
  }

  @override
  void onQueryError(QueryErrorEvent event) {
    print('ERROR: ${event.error}');
  }
}

Implementers

• CompositeQueryLogger
• ConsoleQueryLogger
• MetricsQueryLogger
• NoOpQueryLogger

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onQueryEnd(QueryEndEvent event) → void

Called after a query completes successfully.

onQueryError(QueryErrorEvent event) → void

Called when a query fails.

onQueryStart(QueryStartEvent event) → void

Called before a query is executed.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited