Aggregate::handle() - Code Metrics - Inspection of "Updating scrutinizer config" - C4Tech/laravel-ray-emitter - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e000b3...b0a3db )

by Christopher

created 2016-01-06 20:32 UTC

Aggregate::handle() A

↳ Parent: Aggregate

Complexity

Conditions	2
Paths	2

Size

Total Lines	18
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	13
CRAP Score	2

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
c	2
b	0
f	0
dl	0
loc	18
rs	9.4286
ccs	13
cts	13
cp	1
cc	2
eloc	11
nc	2
nop	1
crap	2

<?php namespace C4tech\RayEmitter\Domain;

use C4tech\RayEmitter\Contracts\Domain\Aggregate as AggregateInterface;
use C4tech\RayEmitter\Contracts\Domain\Command as CommandInterface;
use C4tech\RayEmitter\Contracts\Domain\Event as EventInterface;
use C4tech\RayEmitter\Contracts\Event\Collection as EventCollectionInterface;
use C4tech\RayEmitter\Exceptions\CommandHandlerMissing;
use C4tech\RayEmitter\Exceptions\EventHandlerMissing;
use C4tech\RayEmitter\Facades\EventStore;
use Illuminate\Support\Facades\Config;

abstract class Aggregate implements AggregateInterface
{
    /**
     * Aggregate root entity.
     * @var AggregateRootInterface
     */
    protected $root;

    /**
     * Event sequence counter.
     * @var integer
     */
    protected $sequence = 0;

    /**
     * Apply
     *
     * Alter the Aggregate Root's state by adding a single event.
     * @param  EventInterface $event An event that has occurred.
     * @return void
     */
    protected function apply(EventInterface $event)
    {
        $method = $this->createMethodName('apply', $event);

        if (!method_exists($this, $method)) {
            throw new EventHandlerMissing(
                sprintf(
                    'Command %s does not have a handler for its expected aggregate %s',
                    get_class($event),
                    get_class($this)
                ),
                501
            );
        }

        $this->$method($event);
    }

    /**
     * Create Method Name
     *
     * Generate a method name using a configurable prefix and an object's class basename.
     * @param  string $prefix_key     The key from the configuration to lookup the appropriate prefix.
     * @param  object $object         The object which shall be reduced to its class basename.
     * @param  string $prefix_default The default prefix.
     * @return string                 The method name to use.
     */
    protected function createMethodName($prefix_key, $object, $prefix_default = null)
    {
        if (!$prefix_default) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            $prefix_default = $prefix_key;
            $prefix_key .= '_prefix';
        }

        $prefix = Config::get('ray_emitter.' . $prefix_key, $prefix_default);
        $base = class_basename($object);

        return $prefix . $base;
    }

    /**
     * @inheritDoc
     */
    public function getEntity()
    {
        return $this->root->makeEntity();
    }

    /**
     * @inheritDoc
     */
    public function getId()
    {
        return $this->root->getId();
    }

    /**
     * @inheritDoc
     */
    public function getSequence()
    {
        return $this->sequence;
    }

    /**
     * @inheritDoc
     */
    public function handle(CommandInterface $command)
    {
        $method = $this->createMethodName('handle', $command);

        if (!method_exists($this, $method)) {
            throw new CommandHandlerMissing(
                sprintf(
                    'Command %s does not have a handler for its expected aggregate %s',
                    get_class($command),
                    get_class($this)
                ),
                501
            );
        }

        $event = $this->$method($command);
        $this->publish($event);
    }

    /**
     * @inheritDoc
     */
    public function hydrate(EventCollectionInterface $events)
    {
        $events->each(function (EventInterface $event) {
            $this->apply($event);
            $this->sequence++;
        });
    }

    /**
     * Publish
     *
     * Adds a new event to the event queue, applies it to to the Aggregate Root's
     * state, and broadcasts the Event for listeners to handle.
     * @param  EventInterface $event An Event created by a Command handler.
     * @return void
     */
    protected function publish(EventInterface $event)
    {
        $this->apply($event);
        EventStore::enqueue($event);
    }

    /**
     * Magic Getter
     *
     * Expose getter methods on the Aggregate and Aggregate Root as properties.
     * @param  string $property Requested "property"
     * @return mixed
     */
    public function __get($property)
    {
        $method = 'get' . studly_case($property);

        if (method_exists($this, $method)) {
            return $this->$method();
        }

        return $this->root->$property;
    }
}


1		<?php namespace C4tech\RayEmitter\Domain;
2
3		use C4tech\RayEmitter\Contracts\Domain\Aggregate as AggregateInterface;
4		use C4tech\RayEmitter\Contracts\Domain\Command as CommandInterface;
5		use C4tech\RayEmitter\Contracts\Domain\Event as EventInterface;
6		use C4tech\RayEmitter\Contracts\Event\Collection as EventCollectionInterface;
7		use C4tech\RayEmitter\Exceptions\CommandHandlerMissing;
8		use C4tech\RayEmitter\Exceptions\EventHandlerMissing;
9		use C4tech\RayEmitter\Facades\EventStore;
10		use Illuminate\Support\Facades\Config;
11
12		abstract class Aggregate implements AggregateInterface
13		{
14		/**
15		* Aggregate root entity.
16		* @var AggregateRootInterface
17		*/
18		protected $root;
19
20		/**
21		* Event sequence counter.
22		* @var integer
23		*/
24		protected $sequence = 0;
25
26		/**
27		* Apply
28		*
29		* Alter the Aggregate Root's state by adding a single event.
30		* @param EventInterface $event An event that has occurred.
31		* @return void
32		*/
33	2	protected function apply(EventInterface $event)
34		{
35	2	$method = $this->createMethodName('apply', $event);
36
37	2	if (!method_exists($this, $method)) {
38	1	throw new EventHandlerMissing(
39	1	sprintf(
40	1	'Command %s does not have a handler for its expected aggregate %s',
41	1	get_class($event),
42	1	get_class($this)
43	1	),
44		501
45	1	);
46		}
47
48	1	$this->$method($event);
49	1	}
50
51		/**
52		* Create Method Name
53		*
54		* Generate a method name using a configurable prefix and an object's class basename.
55		* @param string $prefix_key The key from the configuration to lookup the appropriate prefix.
56		* @param object $object The object which shall be reduced to its class basename.
57		* @param string $prefix_default The default prefix.
58		* @return string The method name to use.
59		*/
60	2	protected function createMethodName($prefix_key, $object, $prefix_default = null)
61		{
62	2	if (!$prefix_default) {
		0 ignored issues – show Bug Best Practice introduced 2016-01-06 20:38 UTC by Report Bug Copy Issue Report The expression `$prefix_default` of type `string\|null` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
63	1	$prefix_default = $prefix_key;
64	1	$prefix_key .= '_prefix';
65	1	}
66
67	2	$prefix = Config::get('ray_emitter.' . $prefix_key, $prefix_default);
68	2	$base = class_basename($object);
69
70	2	return $prefix . $base;
71		}
72
73		/**
74		* @inheritDoc
75		*/
76	1	public function getEntity()
77		{
78	1	return $this->root->makeEntity();
79		}
80
81		/**
82		* @inheritDoc
83		*/
84	1	public function getId()
85		{
86	1	return $this->root->getId();
87		}
88
89		/**
90		* @inheritDoc
91		*/
92	3	public function getSequence()
93		{
94	3	return $this->sequence;
95		}
96
97		/**
98		* @inheritDoc
99		*/
100	2	public function handle(CommandInterface $command)
101		{
102	2	$method = $this->createMethodName('handle', $command);
103
104	2	if (!method_exists($this, $method)) {
105	1	throw new CommandHandlerMissing(
106	1	sprintf(
107	1	'Command %s does not have a handler for its expected aggregate %s',
108	1	get_class($command),
109	1	get_class($this)
110	1	),
111		501
112	1	);
113		}
114
115	1	$event = $this->$method($command);
116	1	$this->publish($event);
117	1	}
118
119		/**
120		* @inheritDoc
121		*/
122		public function hydrate(EventCollectionInterface $events)
123		{
124	1	$events->each(function (EventInterface $event) {
125	1	$this->apply($event);
126	1	$this->sequence++;
127	1	});
128	1	}
129
130		/**
131		* Publish
132		*
133		* Adds a new event to the event queue, applies it to to the Aggregate Root's
134		* state, and broadcasts the Event for listeners to handle.
135		* @param EventInterface $event An Event created by a Command handler.
136		* @return void
137		*/
138	1	protected function publish(EventInterface $event)
139		{
140	1	$this->apply($event);
141	1	EventStore::enqueue($event);
142	1	}
143
144		/**
145		* Magic Getter
146		*
147		* Expose getter methods on the Aggregate and Aggregate Root as properties.
148		* @param string $property Requested "property"
149		* @return mixed
150		*/
151	2	public function __get($property)
152		{
153	2	$method = 'get' . studly_case($property);
154
155	2	if (method_exists($this, $method)) {
156	1	return $this->$method();
157		}
158
159	1	return $this->root->$property;
160		}
161		}
162

C4Tech / laravel-ray-emitter

Push — master ( e000b3...b0a3db )

Aggregate::handle() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like