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Informations about the package domain-event-dispatcher

Domain Event Dispatcher

Build Status

Singleton domain event dispatcher to be used during DDD. The domain event dispatcher is a singleton so it can be easily used from within your model.

Installation

Install via Composer using the following command:

Basic Usage

Define an event to be dispatched. Event classes can be anything, and should be easily serialized.

Define a listener for the event

Put it all together, add your listeners and dispatch.

Listener Types

There are two types of listeners:

General Listener

In a previous example, we saw the event dispatcher used for typed events where the event argument is type hinted in the __invoke() method of the event listener. General listeners are invoked by all events and don't have a type hint. For example:

Typed Listener

A typed listener only responds to a particular type of domain event:

Deferred Events

Sometimes it might be useful to dispatch events later in the application flow. To do this, events may be deferred and dispatched later.

Domain Event Storage

For event publication, notification or auditing purposes you may need to store events in an event store. To do this, simply implement the EventStoreInterface:

Then configure the event dispatcher to use the event store:

Important: If configured with an event store, the event dispatcher will attempt to store every event. If you don't want the event dispatcher to store a particular event, implement DisposableEventInterface on the event:

Tests

To run the test suite, run the following:

All versions of domain-event-dispatcher with dependencies

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Package Version
Requires php Version >=5.5
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