StateCollectionMerger::__construct() - Code Metrics - Inspection of "copy weight of transitions when merging" - Metabor/Statemachine - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 11bfa6...c50688 )

by Oliver

created 2016-10-14 16:31 UTC

StateCollectionMerger::__construct() A

↳ Parent: StateCollectionMerger

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
cc	1
eloc	2
nc	1
nop	1
crap	1

<?php

namespace Metabor\Statemachine\Util;

use Metabor\Statemachine\State;
use Metabor\Statemachine\StateCollection;
use Metabor\Statemachine\Transition;
use MetaborStd\MergeableInterface;
use MetaborStd\MetadataInterface;
use MetaborStd\WeightedInterface;
use MetaborStd\Statemachine\StateCollectionInterface;
use MetaborStd\Statemachine\StateInterface;
use MetaborStd\Statemachine\TransitionInterface;

/**
 * @author Oliver Tischlinger
 */
class StateCollectionMerger implements MergeableInterface
{
    /**
     * @var StateCollectionInterface
     */
    private $targetCollection;

    /**
     * @var string
     */
    private $stateNamePrefix;

    /**
     * @param StateCollectionInterface $targetCollection
     */
    public function __construct(StateCollectionInterface $targetCollection)
    {
        $this->targetCollection = $targetCollection;
    }

    /**
     * @return string
     */
    public function getStateNamePrefix()
    {
        return $this->stateNamePrefix;
    }

    /**
     * @param string $stateNamePrefix
     */
    public function setStateNamePrefix($stateNamePrefix)
    {
        $this->stateNamePrefix = $stateNamePrefix;
    }

    /**
     * @return \MetaborStd\Statemachine\StateCollectionInterface
     */
    public function getTargetCollection()
    {
        return $this->targetCollection;
    }

    /**
     * @param string $name
     *
     * @return \MetaborStd\Statemachine\StateInterface
     */
    protected function createState($name)
    {
        return new State($name);
    }

    /**
     * @param StateInterface      $sourceState
     * @param TransitionInterface $sourceTransition
     *
     * @throws \InvalidArgumentException
     */
    protected function addTransition(StateInterface $sourceState, TransitionInterface $sourceTransition)
    {
        if ($sourceState instanceof State) {
            $sourceState->addTransition($sourceTransition);
        } else {
            throw new \InvalidArgumentException('Overwrite this method to implement a different type!');
        }
    }

    /**
     * @param TransitionInterface $sourceTransition
     *
     * @throws \InvalidArgumentException
     *
     * @return \Metabor\Statemachine\Transition
     */
    protected function createTransition(TransitionInterface $sourceTransition)
    {
        $targetStateName = $sourceTransition->getTargetState()->getName();
        $targetState = $this->findOrCreateState($targetStateName);
        $this->mergeMetadata($sourceTransition->getTargetState(), $targetState);
        $eventName = $sourceTransition->getEventName();

        if ($sourceTransition->getConditionName()) {
            if ($sourceTransition instanceof Transition) {
                $condition = $sourceTransition->getCondition();
            } else {
                throw new \InvalidArgumentException('Overwrite this method to implement a different type!');
            }
        } else {
            $condition = null;
        }
        
        if ($sourceTransition instanceof WeightedInterface) {
            $transition->setWeight($sourceTransition->getWeight());

        }

        return new Transition($targetState, $eventName, $condition);
    }

    /**
     * @param object $source
     * @param object $target
     *
     * @throws \RuntimeException
     */
    protected function mergeMetadata($source, $target)
    {
        if ($source instanceof \ArrayAccess) {
            if ($target instanceof \ArrayAccess) {
                if ($source instanceof MetadataInterface) {
                    $metadata = $source->getMetadata();
                    foreach ($metadata as $offset => $value) {
                        $target->offsetSet($offset, $value);
                    }
                } else {
                    throw new \RuntimeException('Source had to make all metadata available!');
                }
            } else {
                throw new \RuntimeException('Source metadata can not be merged!');
            }
        }
    }

    /**
     * @param StateInterface $state
     *
     * @throws \InvalidArgumentException
     */
    protected function addState(StateInterface $state)
    {
        if ($this->targetCollection instanceof StateCollection) {
            $this->targetCollection->addState($state);
        } else {
            throw new \InvalidArgumentException('TargetCollection has to be a StateCollection. Overwrite this method to implement a different type!');
        }
    }

    /**
     * @param string $name
     *
     * @return \MetaborStd\Statemachine\StateInterface
     */
    protected function findOrCreateState($name)
    {
        $name = $this->stateNamePrefix . $name;
        if ($this->targetCollection->hasState($name)) {
            $targetState = $this->targetCollection->getState($name);
        } else {
            $targetState = $this->createState($name);
            $this->addState($targetState);
        }

        return $targetState;
    }

    /**
     * @param StateInterface $sourceState
     *
     * @throws \InvalidArgumentException
     */
    protected function mergeState(StateInterface $sourceState)
    {
        $name = $sourceState->getName();
        $targetState = $this->findOrCreateState($name);
        $this->mergeMetadata($sourceState, $targetState);

        /* @var $transition TransitionInterface */
        foreach ($sourceState->getTransitions() as $sourceTransition) {
            $targetTransition = $this->createTransition($sourceTransition);
            $this->addTransition($targetState, $targetTransition);
        }

        foreach ($sourceState->getEventNames() as $eventName) {
            $sourceEvent = $sourceState->getEvent($eventName);
            $targetEvent = $targetState->getEvent($eventName);

            $this->mergeMetadata($sourceEvent, $targetEvent);

            foreach ($sourceEvent->getObservers() as $observer) {
                $targetEvent->attach($observer);
            }
        }
    }

    /**
     */
    protected function mergeStateCollection(StateCollectionInterface $source)
    {
        /* @var $sourceState StateInterface */
        foreach ($source->getStates() as $sourceState) {
            $this->mergeState($sourceState);
        }
    }

    /**
     * @see \MetaborStd\MergeableInterface::merge()
     */
    public function merge($source)
    {
        if ($source instanceof StateCollectionInterface) {
            $this->mergeStateCollection($source);
        } elseif ($source instanceof StateInterface) {
            $this->mergeState($source);
        } elseif ($source instanceof \Traversable) {
            foreach ($source as $value) {
                $this->merge($value);
            }
        } else {
            throw new \InvalidArgumentException('Source can not be merged!');
        }
    }
}


1		<?php
2
3		namespace Metabor\Statemachine\Util;
4
5		use Metabor\Statemachine\State;
6		use Metabor\Statemachine\StateCollection;
7		use Metabor\Statemachine\Transition;
8		use MetaborStd\MergeableInterface;
9		use MetaborStd\MetadataInterface;
10		use MetaborStd\WeightedInterface;
11		use MetaborStd\Statemachine\StateCollectionInterface;
12		use MetaborStd\Statemachine\StateInterface;
13		use MetaborStd\Statemachine\TransitionInterface;
14
15		/**
16		* @author Oliver Tischlinger
17		*/
18		class StateCollectionMerger implements MergeableInterface
19		{
20		/**
21		* @var StateCollectionInterface
22		*/
23		private $targetCollection;
24
25		/**
26		* @var string
27		*/
28		private $stateNamePrefix;
29
30		/**
31		* @param StateCollectionInterface $targetCollection
32	4	*/
33		public function __construct(StateCollectionInterface $targetCollection)
34	4	{
35	4	$this->targetCollection = $targetCollection;
36		}
37
38		/**
39		* @return string
40		*/
41		public function getStateNamePrefix()
42		{
43		return $this->stateNamePrefix;
44		}
45
46		/**
47		* @param string $stateNamePrefix
48		*/
49		public function setStateNamePrefix($stateNamePrefix)
50		{
51		$this->stateNamePrefix = $stateNamePrefix;
52		}
53
54		/**
55		* @return \MetaborStd\Statemachine\StateCollectionInterface
56		*/
57		public function getTargetCollection()
58		{
59		return $this->targetCollection;
60		}
61
62		/**
63		* @param string $name
64		*
65		* @return \MetaborStd\Statemachine\StateInterface
66	4	*/
67		protected function createState($name)
68	4	{
69		return new State($name);
70		}
71
72		/**
73		* @param StateInterface $sourceState
74		* @param TransitionInterface $sourceTransition
75		*
76		* @throws \InvalidArgumentException
77	4	*/
78		protected function addTransition(StateInterface $sourceState, TransitionInterface $sourceTransition)
79	4	{
80	4	if ($sourceState instanceof State) {
81	4	$sourceState->addTransition($sourceTransition);
82		} else {
83		throw new \InvalidArgumentException('Overwrite this method to implement a different type!');
84	4	}
85		}
86
87		/**
88		* @param TransitionInterface $sourceTransition
89		*
90		* @throws \InvalidArgumentException
91		*
92		* @return \Metabor\Statemachine\Transition
93	4	*/
94		protected function createTransition(TransitionInterface $sourceTransition)
95	4	{
96	4	$targetStateName = $sourceTransition->getTargetState()->getName();
97	4	$targetState = $this->findOrCreateState($targetStateName);
98	4	$this->mergeMetadata($sourceTransition->getTargetState(), $targetState);
99		$eventName = $sourceTransition->getEventName();
100	4
101	3	if ($sourceTransition->getConditionName()) {
102	3	if ($sourceTransition instanceof Transition) {
103	3	$condition = $sourceTransition->getCondition();
104		} else {
105		throw new \InvalidArgumentException('Overwrite this method to implement a different type!');
106	3	}
107	4	} else {
108		$condition = null;
109		}
110	4
111		if ($sourceTransition instanceof WeightedInterface) {
112		$transition->setWeight($sourceTransition->getWeight());
		0 ignored issues – show Bug introduced 2016-10-14 16:33 UTC by Report Bug Copy Issue Report The variable `$transition` does not exist. Did you mean `$sourceTransition`? This check looks for variables that are accessed but have not been defined. It raises an issue if it finds another variable that has a similar name. The variable may have been renamed without also renaming all references. Loading history...
113		}
114
115		return new Transition($targetState, $eventName, $condition);
116		}
117
118		/**
119	4	* @param object $source
120		* @param object $target
121	4	*
122	4	* @throws \RuntimeException
123	4	*/
124	4	protected function mergeMetadata($source, $target)
125	4	{
126	3	if ($source instanceof \ArrayAccess) {
127	4	if ($target instanceof \ArrayAccess) {
128	4	if ($source instanceof MetadataInterface) {
129		$metadata = $source->getMetadata();
130		foreach ($metadata as $offset => $value) {
131	4	$target->offsetSet($offset, $value);
132		}
133	1	} else {
134	4	throw new \RuntimeException('Source had to make all metadata available!');
135	4	}
136		} else {
137		throw new \RuntimeException('Source metadata can not be merged!');
138		}
139		}
140		}
141
142	4	/**
143		* @param StateInterface $state
144	4	*
145	4	* @throws \InvalidArgumentException
146	4	*/
147		protected function addState(StateInterface $state)
148		{
149	4	if ($this->targetCollection instanceof StateCollection) {
150		$this->targetCollection->addState($state);
151		} else {
152		throw new \InvalidArgumentException('TargetCollection has to be a StateCollection. Overwrite this method to implement a different type!');
153		}
154		}
155
156	4	/**
157		* @param string $name
158	4	*
159	4	* @return \MetaborStd\Statemachine\StateInterface
160	4	*/
161	4	protected function findOrCreateState($name)
162	4	{
163	4	$name = $this->stateNamePrefix . $name;
164		if ($this->targetCollection->hasState($name)) {
165		$targetState = $this->targetCollection->getState($name);
166	4	} else {
167		$targetState = $this->createState($name);
168		$this->addState($targetState);
169		}
170
171		return $targetState;
172		}
173
174	4	/**
175		* @param StateInterface $sourceState
176	4	*
177	4	* @throws \InvalidArgumentException
178	4	*/
179		protected function mergeState(StateInterface $sourceState)
180		{
181	4	$name = $sourceState->getName();
182	4	$targetState = $this->findOrCreateState($name);
183	4	$this->mergeMetadata($sourceState, $targetState);
184	4
185		/* @var $transition TransitionInterface */
186	4	foreach ($sourceState->getTransitions() as $sourceTransition) {
187	4	$targetTransition = $this->createTransition($sourceTransition);
188	4	$this->addTransition($targetState, $targetTransition);
189		}
190	4
191		foreach ($sourceState->getEventNames() as $eventName) {
192	4	$sourceEvent = $sourceState->getEvent($eventName);
193	3	$targetEvent = $targetState->getEvent($eventName);
194	4
195	4	$this->mergeMetadata($sourceEvent, $targetEvent);
196	4
197		foreach ($sourceEvent->getObservers() as $observer) {
198		$targetEvent->attach($observer);
199		}
200	4	}
201		}
202
203	4	/**
204	4	*/
205	4	protected function mergeStateCollection(StateCollectionInterface $source)
206	4	{
207		/* @var $sourceState StateInterface */
208		foreach ($source->getStates() as $sourceState) {
209		$this->mergeState($sourceState);
210		}
211	4	}
212
213	4	/**
214	4	* @see \MetaborStd\MergeableInterface::merge()
215	4	*/
216		public function merge($source)
217		{
218		if ($source instanceof StateCollectionInterface) {
219		$this->mergeStateCollection($source);
220		} elseif ($source instanceof StateInterface) {
221		$this->mergeState($source);
222		} elseif ($source instanceof \Traversable) {
223		foreach ($source as $value) {
224	4	$this->merge($value);
225		}
226		} else {
227		throw new \InvalidArgumentException('Source can not be merged!');
228		}
229		}
230		}
231

Metabor / Statemachine

Push — master ( 11bfa6...c50688 )

StateCollectionMerger::__construct() A

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