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BarcodeControllerFactory::createService()   A
last analyzed

↳ Parent: BarcodeControllerFactory

Complexity

Conditions 1
Paths 1

Size

Total Lines 8
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 2
Bugs 2 Features 0
Metric Value
c 2
b 2
f 0
dl 0
loc 8
rs 9.4285
cc 1
eloc 4
nc 1
nop 1
1 
<?php
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/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * This software consists of voluntary contributions made by many individuals

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 * and is licensed under the MIT license.

            


            
                                                                                                            
                            
            
                                    
            
            

                
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 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace LearnZF2Barcode\Factory\Controller;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use LearnZF2Barcode\Controller\BarcodeController;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Zend\ServiceManager\FactoryInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Zend\ServiceManager\ServiceLocatorInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class BarcodeControllerFactory implements FactoryInterface

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    /**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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     * {@inheritdoc}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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     */

            


            
                                                        
            
                                    
            
            

                
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    public function createService(ServiceLocatorInterface $sl)

            


            
                                                        
            
                                    
            
            

                
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    {

            


            
                                                        
            
                                    
            
            

                
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        $controller = new BarcodeController(

            


            
                                                        
            
                                    
            
            

                
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            $sl->getServiceLocator()->get('FormElementManager')->get('LearnZF2Barcode\Form\BarcodeForm')

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
It seems like you code against a concrete implementation and not the interface Zend\ServiceManager\ServiceLocatorInterface as the method getServiceLocator() does only exist in the following implementations of said interface: Zend\Barcode\ObjectPluginManager, Zend\Barcode\RendererPluginManager, Zend\Cache\PatternPluginManager, Zend\Cache\Storage\AdapterPluginManager, Zend\Cache\Storage\PluginManager, Zend\Config\ReaderPluginManager, Zend\Config\WriterPluginManager, Zend\Feed\Reader\ExtensionPluginManager, Zend\Feed\Writer\ExtensionPluginManager, Zend\File\Transfer\Adapter\FilterPluginManager, Zend\File\Transfer\Adapter\ValidatorPluginManager, Zend\Filter\FilterPluginManager, Zend\Form\FormElementManager, Zend\Hydrator\HydratorPluginManager, Zend\I18n\Translator\LoaderPluginManager, Zend\InputFilter\InputFilterPluginManager, Zend\Log\FilterPluginManager, Zend\Log\FormatterPluginManager, Zend\Log\ProcessorPluginManager, Zend\Log\WriterPluginManager, Zend\Log\Writer\FilterPluginManager, Zend\Log\Writer\FormatterPluginManager, Zend\Mail\Protocol\SmtpPluginManager, Zend\Mvc\Controller\ControllerManager, Zend\Mvc\Controller\PluginManager, Zend\Mvc\Router\RoutePluginManager, Zend\Paginator\AdapterPluginManager, Zend\Paginator\ScrollingStylePluginManager, Zend\Serializer\AdapterPluginManager, Zend\ServiceManager\AbstractPluginManager, Zend\Stdlib\Hydrator\HydratorPluginManager, Zend\Tag\Cloud\DecoratorPluginManager, Zend\Text\Table\DecoratorManager, Zend\Validator\ValidatorPluginManager, Zend\View\HelperPluginManager, Zend\View\Helper\Navigation\PluginManager.
                                                                                                                                                                                                        

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s take a look at an example:


interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}





In the above example, the authenticate() method works fine as long as you just pass
instances of MyUser. However, if you now also want to pass a different implementation
of User which does not have a getDisplayName() method, the code will break.




Available Fixes


  1. Change the type-hint for the parameter:
    

    class AuthSystem
{
    public function authenticate(MyUser $user) { /* ... */ }
}

    

    

    2. 

  2. Add an additional type-check:
    

    class AuthSystem
{
    public function authenticate(User $user)
    {
        if ($user instanceof MyUser) {
            $this->logger->info(/** ... */);
        }

        // or alternatively
        if ( ! $user instanceof MyUser) {
            throw new \LogicException(
                '$user must be an instance of MyUser, '
               .'other instances are not supported.'
            );
        }

    }
}

    

    

    3. 




 Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types
inside the if block in such a case.


  1. Add the method to the interface:
    

    interface User
{
    /** @return string */
    public function getPassword();

    /** @return string */
    public function getDisplayName();
}

    

    

    2. 



                        

                                                    

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        return $controller;

            


            
                                                        
            
                                    
            
            

                
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    }

            


            
                                                        
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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