CronScheduledTrigger class

A trigger that resume sampling based on a cron job specification.

Bases on the cron package. See crontab guru for a useful tool for specifying cron jobs.

Inheritance
  • Object
  • Serializable
  • Trigger
  • CronScheduledTrigger
Annotations
  • @JsonSerializable(fieldRename: FieldRename.none, includeIfNull: false)

Constructors

CronScheduledTrigger({int? minute, int? hour, int? day, int? month, int? weekday, Duration? duration})
Create a cron scheduled trigger based on specifying:
factory
CronScheduledTrigger.fromJson(Map<String, dynamic> json)
factory
CronScheduledTrigger.parse({required String cronExpression, Duration? duration})
Create a trigger based on a cron-formatted string expression.
factory

Properties

$type String?
The runtime class name (type) of this object. Used for deserialization from JSON objects.
getter/setter pairinherited
cronExpression String
The cron job expression.
getter/setter pair
duration Duration
The duration (until stopped) of the the sampling. Defaults to 1 second, mostly useful for one-time sampling.
getter/setter pair
fromJsonFunction Function
The function which can convert a JSON string to an object of this type.
no setteroverride
hashCode int
The hash code for this object.
no setterinherited
jsonType String
Return the __type to be used for JSON serialization of this class. Default is runtimeType. Only specify this if you need another type.
no setterinherited
requiresMasterDevice bool?
Determines whether the trigger needs to be evaluated on a master device (MasterDeviceDescriptor). For example, this is the case when the trigger is time bound and needs to be evaluated by a task scheduler running on a master device.
getter/setter pairinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
sourceDeviceRoleName String?
The device role name from which the trigger originates.
getter/setter pairinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() Map<String, dynamic>
Return a JSON encoding of this object.
override
toString() String
A string representation of this object.
override

Operators

operator ==(Object other) bool
The equality operator.
inherited