Command class
Concrete implementation of [ICommand ICommand
] interface. Command allows to call a method
or function using Command pattern.
Example
var command = Command('add', null, (correlationId, args) {
var param1 = args.getAsFloat('param1');
var param2 = args.getAsFloat('param2');
var result = param1 + param2;
return result;
});
result = await command.execute(
'123',
Parameters.fromTuples(
['param1', 2,
'param2', 2]
)).catch(err) {
if (err!= null) print(err);
else print('2 + 2 = ' + result);
}
);
// Console output: 2 + 2 = 4
See [ICommand] See [CommandSet]
- Implemented types
Constructors
Properties
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
execute(
String correlationId, Parameters args) → Future -
Executes the command. Before execution it validates [
Parameters args
] using the defined schema. The command execution intercepts exceptions raised by the called function and returns them as an error in callback. [...]override -
getName(
) → String -
Gets the command name.
Returns the name of this command.
override
-
validate(
Parameters args) → List< ValidationResult> -
Validates the command [
Parameters args
] before execution using the defined schema. [...]override -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toString(
) → String -
Returns a string representation of this object.
inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited