eventespresso / event-espresso-core

core/services/container/Recipe.php

Indentation +229 added lines, -230 removed lines

@@ -7,7 +7,7 @@ 
 use RuntimeException;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -23,51 +23,50 @@ 
 class Recipe implements RecipeInterface
 {
 
-    /**
-     * A default Recipe to use if none is specified for a class
-     */
-    const DEFAULT_ID = '*';
-
-    /**
-     * Identifier for the entity class to be constructed.
-     * Typically a Fully Qualified Class Name
-     *
-     * @var string $identifier
-     */
-    private $identifier;
-
-    /**
-     * Fully Qualified Class Name
-     *
-     * @var string $fqcn
-     */
-    private $fqcn;
-
-    /**
-     * class name aliases - typically a Fully Qualified Interface that the class implements
-     * identifiers passed to the coffee pot will be run through the filters to find the correct class name
-     *
-     * @var array $filters
-     */
-    private $filters = array();
-
-    /**
-     * one of the class constants from CoffeeShop:
-     *  CoffeeMaker::BREW_NEW - creates a new instance
-     *  CoffeeMaker::BREW_SHARED - creates a shared instance
-     *  CoffeeMaker::BREW_LOAD_ONLY - loads but does not instantiate
-
-*
+	/**
+	 * A default Recipe to use if none is specified for a class
+	 */
+	const DEFAULT_ID = '*';
+
+	/**
+	 * Identifier for the entity class to be constructed.
+	 * Typically a Fully Qualified Class Name
+	 *
+	 * @var string $identifier
+	 */
+	private $identifier;
+
+	/**
+	 * Fully Qualified Class Name
+	 *
+	 * @var string $fqcn
+	 */
+	private $fqcn;
+
+	/**
+	 * class name aliases - typically a Fully Qualified Interface that the class implements
+	 * identifiers passed to the coffee pot will be run through the filters to find the correct class name
+	 *
+	 * @var array $filters
+	 */
+	private $filters = array();
+
+	/**
+	 * one of the class constants from CoffeeShop:
+	 *  CoffeeMaker::BREW_NEW - creates a new instance
+	 *  CoffeeMaker::BREW_SHARED - creates a shared instance
+	 *  CoffeeMaker::BREW_LOAD_ONLY - loads but does not instantiate
+	 *
 *@var string $type
-     */
-    private $type;
+	 */
+	private $type;
 
-    /**
-     * array of full server filepaths to files that may contain the class
-     *
-     * @var array $paths
-     */
-    private $paths = array();
+	/**
+	 * array of full server filepaths to files that may contain the class
+	 *
+	 * @var array $paths
+	 */
+	private $paths = array();
 
 
 
@@ -82,192 +81,192 @@ 
 	 *                           then supply a filepath, or array of filepaths, so that it can be included
 	 * @param string $fqcn
 	 */
-    public function __construct(
-	    $identifier,
-	    $type = CoffeeMaker::BREW_NEW,
-	    $filters = array(),
-	    $paths = array(),
-	    $fqcn = ''
-    )
-    {
-        $this->setIdentifier($identifier);
-        $this->setType($type);
-        $this->setPaths($paths);
-        $this->setFqcn($fqcn);
-        $this->setFilters((array)$filters);
-    }
-
-
-
-    /**
-     * @return string
-     */
-    public function identifier()
-    {
-        return $this->identifier;
-    }
-
-
-
-    /**
-     * @return string
-     */
-    public function fqcn()
-    {
-        return $this->fqcn;
-    }
-
-
-
-    /**
-     * @return array
-     */
-    public function filters()
-    {
-        return (array)$this->filters;
-    }
-
-
-
-    /**
-     * @return string
-     */
-    public function type()
-    {
-        return $this->type;
-    }
-
-
-
-    /**
-     * @return array
-     */
-    public function paths()
-    {
-        return (array)$this->paths;
-    }
-
-
-
-    /**
-     * @param  string $identifier Identifier for the entity class that the Recipe applies to
-     *                            Typically a Fully Qualified Class Name
-     */
-    public function setIdentifier($identifier)
-    {
-        if ( ! is_string($identifier) || empty($identifier)) {
-            throw new InvalidIdentifierException(
-                is_object($identifier) ? get_class($identifier) : gettype($identifier),
-                __('class identifier (typically a \Fully\Qualified\ClassName)', 'event_espresso')
-            );
-        }
-        $this->identifier = $identifier;
-    }
-
-
-
-    /**
-     * Ensures incoming string is a valid Fully Qualified Class Name,
-     * except if this is the default wildcard Recipe ( * ),
-     * or it's NOT an actual FQCN because the Recipe is using filepaths
-     * for classes that are not PSR-4 compatible
-     * PLZ NOTE:
-     *  Recipe::setFqcn() has a check to see if Recipe::$paths is empty or not,
-     *  therefore you should always call Recipe::setPaths() before Recipe::setFqcn()
-     *
-     * @param string $fqcn
-     */
-    public function setFqcn($fqcn)
-    {
-	    $fqcn = ! empty($fqcn) ? $fqcn : $this->identifier;
-        if ( ! is_string($fqcn)) {
-            throw new InvalidDataTypeException(
-                '$fqcn',
-                is_object($fqcn) ? get_class($fqcn) : gettype($fqcn),
-                __('string (Fully\Qualified\ClassName)', 'event_espresso')
-            );
-        }
-        $fqcn = ltrim($fqcn, '\\');
-        if (
-            $fqcn !== Recipe::DEFAULT_ID
-            && ! empty($fqcn)
-            && empty($this->paths)
-            && ! class_exists($fqcn)
-        ) {
-            throw new InvalidClassException($fqcn);
-        }
-        $this->fqcn = $fqcn;
-    }
-
-
-
-    /**
-     * @param array $filters an array of filters where keys are the aliases and values are the FQCNs
-     *                          example:
-     *                          array( 'ClassInterface' => 'Fully\Qualified\ClassName' )
-     */
-    public function setFilters(array $filters)
-    {
-        if (empty($filters)) {
-            return;
-        }
-        if ( ! is_array($filters)) {
-            throw new InvalidDataTypeException(
-                '$filters',
-                is_object($filters) ? get_class($filters) : gettype($filters),
-                __('array of class aliases', 'event_espresso')
-            );
-        }
-        $this->filters = array_merge($this->filters, $filters);
-    }
-
-
-
-    /**
-     * @param string $type one of the class constants returned from CoffeeMaker::getTypes()
-     */
-    public function setType($type = CoffeeMaker::BREW_NEW)
-    {
-        $this->type = CoffeeMaker::validateType($type);
-    }
-
-
-
-    /**
-     * Ensures incoming paths is a valid filepath, or array of valid filepaths,
-     * and merges them in with any existing filepaths
-     *
-     * PLZ NOTE:
-     *  Recipe::setFqcn() has a check to see if Recipe::$paths is empty or not,
-     *  therefore you should always call Recipe::setPaths() before Recipe::setFqcn()
-     *
-     * @param string|array $paths
-     */
-    public function setPaths($paths = array())
-    {
-        if (empty($paths)) {
-            return;
-        }
-        if ( ! (is_string($paths) || is_array($paths))) {
-            throw new InvalidDataTypeException(
-                '$path',
-                is_object($paths) ? get_class($paths) : gettype($paths),
-                __('string or array of strings (full server filepath(s))', 'event_espresso')
-            );
-        }
-        $paths = (array)$paths;
-        foreach ($paths as $path) {
-            if (strpos($path, '*') === false && ! is_readable($path)) {
-                throw new RuntimeException(
-                    sprintf(
-                        __('The following filepath is not readable: "%1$s"', 'event_espresso'),
-                        $path
-                    )
-                );
-            }
-        }
-        $this->paths = array_merge($this->paths, $paths);
-    }
+	public function __construct(
+		$identifier,
+		$type = CoffeeMaker::BREW_NEW,
+		$filters = array(),
+		$paths = array(),
+		$fqcn = ''
+	)
+	{
+		$this->setIdentifier($identifier);
+		$this->setType($type);
+		$this->setPaths($paths);
+		$this->setFqcn($fqcn);
+		$this->setFilters((array)$filters);
+	}
+
+
+
+	/**
+	 * @return string
+	 */
+	public function identifier()
+	{
+		return $this->identifier;
+	}
+
+
+
+	/**
+	 * @return string
+	 */
+	public function fqcn()
+	{
+		return $this->fqcn;
+	}
+
+
+
+	/**
+	 * @return array
+	 */
+	public function filters()
+	{
+		return (array)$this->filters;
+	}
+
+
+
+	/**
+	 * @return string
+	 */
+	public function type()
+	{
+		return $this->type;
+	}
+
+
+
+	/**
+	 * @return array
+	 */
+	public function paths()
+	{
+		return (array)$this->paths;
+	}
+
+
+
+	/**
+	 * @param  string $identifier Identifier for the entity class that the Recipe applies to
+	 *                            Typically a Fully Qualified Class Name
+	 */
+	public function setIdentifier($identifier)
+	{
+		if ( ! is_string($identifier) || empty($identifier)) {
+			throw new InvalidIdentifierException(
+				is_object($identifier) ? get_class($identifier) : gettype($identifier),
+				__('class identifier (typically a \Fully\Qualified\ClassName)', 'event_espresso')
+			);
+		}
+		$this->identifier = $identifier;
+	}
+
+
+
+	/**
+	 * Ensures incoming string is a valid Fully Qualified Class Name,
+	 * except if this is the default wildcard Recipe ( * ),
+	 * or it's NOT an actual FQCN because the Recipe is using filepaths
+	 * for classes that are not PSR-4 compatible
+	 * PLZ NOTE:
+	 *  Recipe::setFqcn() has a check to see if Recipe::$paths is empty or not,
+	 *  therefore you should always call Recipe::setPaths() before Recipe::setFqcn()
+	 *
+	 * @param string $fqcn
+	 */
+	public function setFqcn($fqcn)
+	{
+		$fqcn = ! empty($fqcn) ? $fqcn : $this->identifier;
+		if ( ! is_string($fqcn)) {
+			throw new InvalidDataTypeException(
+				'$fqcn',
+				is_object($fqcn) ? get_class($fqcn) : gettype($fqcn),
+				__('string (Fully\Qualified\ClassName)', 'event_espresso')
+			);
+		}
+		$fqcn = ltrim($fqcn, '\\');
+		if (
+			$fqcn !== Recipe::DEFAULT_ID
+			&& ! empty($fqcn)
+			&& empty($this->paths)
+			&& ! class_exists($fqcn)
+		) {
+			throw new InvalidClassException($fqcn);
+		}
+		$this->fqcn = $fqcn;
+	}
+
+
+
+	/**
+	 * @param array $filters an array of filters where keys are the aliases and values are the FQCNs
+	 *                          example:
+	 *                          array( 'ClassInterface' => 'Fully\Qualified\ClassName' )
+	 */
+	public function setFilters(array $filters)
+	{
+		if (empty($filters)) {
+			return;
+		}
+		if ( ! is_array($filters)) {
+			throw new InvalidDataTypeException(
+				'$filters',
+				is_object($filters) ? get_class($filters) : gettype($filters),
+				__('array of class aliases', 'event_espresso')
+			);
+		}
+		$this->filters = array_merge($this->filters, $filters);
+	}
+
+
+
+	/**
+	 * @param string $type one of the class constants returned from CoffeeMaker::getTypes()
+	 */
+	public function setType($type = CoffeeMaker::BREW_NEW)
+	{
+		$this->type = CoffeeMaker::validateType($type);
+	}
+
+
+
+	/**
+	 * Ensures incoming paths is a valid filepath, or array of valid filepaths,
+	 * and merges them in with any existing filepaths
+	 *
+	 * PLZ NOTE:
+	 *  Recipe::setFqcn() has a check to see if Recipe::$paths is empty or not,
+	 *  therefore you should always call Recipe::setPaths() before Recipe::setFqcn()
+	 *
+	 * @param string|array $paths
+	 */
+	public function setPaths($paths = array())
+	{
+		if (empty($paths)) {
+			return;
+		}
+		if ( ! (is_string($paths) || is_array($paths))) {
+			throw new InvalidDataTypeException(
+				'$path',
+				is_object($paths) ? get_class($paths) : gettype($paths),
+				__('string or array of strings (full server filepath(s))', 'event_espresso')
+			);
+		}
+		$paths = (array)$paths;
+		foreach ($paths as $path) {
+			if (strpos($path, '*') === false && ! is_readable($path)) {
+				throw new RuntimeException(
+					sprintf(
+						__('The following filepath is not readable: "%1$s"', 'event_espresso'),
+						$path
+					)
+				);
+			}
+		}
+		$this->paths = array_merge($this->paths, $paths);
+	}
 
 
 

core/services/container/CoffeeShop.php

Indentation +436 added lines, -436 removed lines

@@ -13,7 +13,7 @@ 
 use OutOfBoundsException;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -32,441 +32,441 @@ 
 {
 
 
-    /**
-     * This was the best coffee related name I could think of to represent class name "aliases"
-     * So classes can be found via an alias identifier,
-     * that is revealed when it is run through... the filters... eh? get it?
-     *
-     * @var array $filters
-     */
-    private $filters = array();
-
-    /**
-     * These are the classes that will actually build the objects (to order of course)
-     *
-     * @var array $coffee_makers
-     */
-    private $coffee_makers = array();
-
-    /**
-     * where the instantiated "singleton" objects are stored
-     *
-     * @var CollectionInterface $carafe
-     */
-    private $carafe;
-
-    /**
-     * collection of Recipes that instruct us how to brew objects
-     *
-     * @var CollectionInterface $recipes
-     */
-    private $recipes;
-
-    /**
-     * collection of closures for brewing objects
-     *
-     * @var CollectionInterface $reservoir
-     */
-    private $reservoir;
-
-
-
-    /**
-     * CoffeeShop constructor
-     */
-    public function __construct()
-    {
-        // array for storing class aliases
-        $this->filters = array();
-        // create collection for storing shared services
-        $this->carafe = new LooseCollection( '' );
-        // create collection for storing recipes that tell how to build services and entities
-        $this->recipes = new Collection('EventEspresso\core\services\container\RecipeInterface');
-        // create collection for storing closures for constructing new entities
-        $this->reservoir = new Collection('Closure');
-        // create collection for storing the generators that build our services and entity closures
-        $this->coffee_makers = new Collection('EventEspresso\core\services\container\CoffeeMakerInterface');
-    }
-
-
-
-    /**
-     * Returns true if the container can return an entry for the given identifier.
-     * Returns false otherwise.
-     * `has($identifier)` returning true does not mean that `get($identifier)` will not throw an exception.
-     * It does however mean that `get($identifier)` will not throw a `ServiceNotFoundException`.
-     *
-     * @param string $identifier  Identifier of the entry to look for.
-     *                            Typically a Fully Qualified Class Name
-     * @return boolean
-     */
-    public function has($identifier)
-    {
-        $identifier = $this->filterIdentifier($identifier);
-        return $this->carafe->has($identifier);
-    }
-
-
-
-    /**
-     * finds a previously brewed (SHARED) service and returns it
-     *
-     * @param  string $identifier Identifier for the entity class to be constructed.
-     *                            Typically a Fully Qualified Class Name
-     * @return mixed
-     * @throws ServiceNotFoundException No service was found for this identifier.
-     */
-    public function get($identifier)
-    {
-        $identifier = $this->filterIdentifier($identifier);
-        if ($this->carafe->has($identifier)) {
-            return $this->carafe->get($identifier);
-        }
-        throw new ServiceNotFoundException($identifier);
-    }
-
-
-
-    /**
-     * returns an instance of the requested entity type using the supplied arguments.
-     * If a shared service is requested and an instance is already in the carafe, then it will be returned.
-     * If it is not already in the carafe, then the service will be constructed, added to the carafe, and returned
-     * If the request is for a new entity and a closure exists in the reservoir for creating it,
-     * then a new entity will be instantiated from the closure and returned.
-     * If a closure does not exist, then one will be built and added to the reservoir
-     * before instantiating the requested entity.
-     *
-     * @param  string $identifier Identifier for the entity class to be constructed.
-     *                            Typically a Fully Qualified Class Name
-     * @param array   $arguments  an array of arguments to be passed to the entity constructor
-     * @param string  $type
-     * @return mixed
-     * @throws ServiceNotFoundException No service was found for this identifier.
-     */
-    public function brew($identifier, $arguments = array(), $type = '')
-    {
-        // resolve any class aliases that may exist
-        $identifier = $this->filterIdentifier($identifier);
-        try {
-            // is a shared service being requested?
-            if (empty($type) || $type === CoffeeMaker::BREW_SHARED) {
-                // if a shared service was requested and an instance is in the carafe, then return it
-                return $this->get($identifier);
-            }
-        } catch (ServiceNotFoundException $e) {
-            // if not then we'll just catch the ServiceNotFoundException but not do anything just yet,
-            // and instead, attempt to build whatever was requested
-        }
-        $brewed = false;
-        // if the reservoir doesn't have a closure already for the requested identifier,
-        // then neither a shared service nor a closure for making entities has been built yet
-        if ( ! $this->reservoir->has($identifier)) {
-            // so let's brew something up and add it to the proper collection
-            $brewed = $this->makeCoffee($identifier, $arguments, $type);
-        }
-        // was the brewed item a callable factory function ?
-        if (is_callable($brewed)) {
-            // then instantiate a new entity from the cached closure
-            $entity = $brewed($arguments);
-        } else if ($brewed) {
-            // requested object was a shared entity, so attempt to get it from the carafe again
-            // because if it wasn't there before, then it should have just been brewed and added,
-            // but if it still isn't there, then this time
-            // the thrown ServiceNotFoundException will not be caught
-            $entity = $this->get($identifier);
-        } else {
-            // if identifier is for a non-shared entity,
-            // then either a cached closure already existed, or was just brewed
-            $closure = $this->reservoir->get($identifier);
-            $entity = $closure($arguments);
-        }
-        return $entity;
-    }
-
-
-
-    /**
-     * @param CoffeeMakerInterface $coffee_maker
-     * @param string               $type
-     * @return bool
-     */
-    public function addCoffeeMaker(CoffeeMakerInterface $coffee_maker, $type)
-    {
-        $type = CoffeeMaker::validateType($type);
-        return $this->coffee_makers->add($coffee_maker, $type);
-    }
-
-
-
-    /**
-     * @param string   $identifier
-     * @param callable $closure
-     * @return callable|null
-     */
-    public function addClosure($identifier, $closure)
-    {
-        if ( ! is_callable($closure)) {
-            throw new InvalidDataTypeException('$closure', $closure, 'Closure');
-        }
-        $identifier = $this->processIdentifier($identifier);
-        if ($this->reservoir->add($closure, $identifier)) {
-            return $closure;
-        }
-        return null;
-    }
-
-
-
-    /**
-     * @param  string $identifier Identifier for the entity class that the service applies to
-     *                            Typically a Fully Qualified Class Name
-     * @param mixed  $service
-     * @return bool
-     */
-    public function addService($identifier, $service)
-    {
-        $identifier = $this->processIdentifier($identifier);
-        $service = $this->validateService($identifier, $service);
-        return $this->carafe->add($service, $identifier);
-    }
-
-
-
-    /**
-     * Adds instructions on how to brew objects
-     *
-     * @param RecipeInterface $recipe
-     * @return mixed
-     */
-    public function addRecipe(RecipeInterface $recipe)
-    {
-        $this->addAliases($recipe->identifier(), $recipe->filters());
-        $identifier = $this->processIdentifier($recipe->identifier());
-        return $this->recipes->add($recipe, $identifier);
-    }
-
-
-
-    /**
-     * Get instructions on how to brew objects
-     *
-     * @param  string $identifier Identifier for the entity class that the recipe applies to
-     *                            Typically a Fully Qualified Class Name
-     * @param string $type
-     * @return RecipeInterface
-     */
-    public function getRecipe($identifier, $type = '')
-    {
-        $identifier = $this->processIdentifier($identifier);
-        if ($this->recipes->has($identifier)) {
-            return $this->recipes->get($identifier);
-        }
-        $default_recipes = $this->getDefaultRecipes();
-        $matches = array();
-        foreach ($default_recipes as $wildcard => $default_recipe) {
-            // is the wildcard recipe prefix in the identifier ?
-            if (strpos($identifier, $wildcard) !== false) {
-                // track matches and use the number of wildcard characters matched for the key
-                $matches[strlen($wildcard)] = $default_recipe;
-            }
-        }
-        if (count($matches) > 0) {
-            // sort our recipes by the number of wildcard characters matched
-            ksort($matches);
-            // then grab the last recipe form the list, since it had the most matching characters
-            $match = array_pop($matches);
-            // since we are using a default recipe, we need to set it's identifier and fqcn
-            return $this->copyDefaultRecipe($match, $identifier, $type);
-        }
-        if ($this->recipes->has(Recipe::DEFAULT_ID)) {
-            // since we are using a default recipe, we need to set it's identifier and fqcn
-            return $this->copyDefaultRecipe($this->recipes->get(Recipe::DEFAULT_ID), $identifier, $type);
-        }
-        throw new OutOfBoundsException(__('Could not brew coffee because no recipes were found.', 'event_espresso'));
-    }
-
-
-
-    /**
-     * adds class name aliases to list of filters
-     *
-     * @param  string $identifier Identifier for the entity class that the alias applies to
-     *                            Typically a Fully Qualified Class Name
-     * @param  array  $aliases
-     * @return void
-     * @throws InvalidIdentifierException
-     */
-    public function addAliases($identifier, $aliases)
-    {
-        if (empty($aliases)) {
-            return;
-        }
-        $identifier = $this->processIdentifier($identifier);
-        foreach ((array)$aliases as $alias) {
-            $this->filters[$this->processIdentifier($alias)] = $identifier;
-        }
-    }
-
-
-
-    /**
-     * Adds a service to one of the internal collections
-     *
-     * @param        $identifier
-     * @param array  $arguments
-     * @param string $type
-     * @return mixed
-     * @throws ServiceExistsException
-     */
-    private function makeCoffee($identifier, $arguments = array(), $type = '')
-    {
-        if ((empty($type) || $type === CoffeeMaker::BREW_SHARED) && $this->has($identifier)) {
-            throw new ServiceExistsException($identifier);
-        }
-        $identifier = $this->filterIdentifier($identifier);
-        $recipe = $this->getRecipe($identifier, $type);
-        $type = ! empty($type) ? $type : $recipe->type();
-        $coffee_maker = $this->getCoffeeMaker($type);
-        return $coffee_maker->brew($recipe, $arguments);
-    }
-
-
-
-    /**
-     * filters alias identifiers to find the real class name
-     *
-     * @param  string $identifier Identifier for the entity class that the filter applies to
-     *                            Typically a Fully Qualified Class Name
-     * @return string
-     * @throws InvalidIdentifierException
-     */
-    private function filterIdentifier($identifier)
-    {
-        $identifier = $this->processIdentifier($identifier);
-        return isset($this->filters[$identifier]) && ! empty($this->filters[$identifier])
-            ? $this->filters[$identifier]
-            : $identifier;
-    }
-
-
-
-    /**
-     * verifies and standardizes identifiers
-     *
-     * @param  string $identifier Identifier for the entity class
-     *                            Typically a Fully Qualified Class Name
-     * @return string
-     * @throws InvalidIdentifierException
-     */
-    private function processIdentifier($identifier)
-    {
-        if ( ! is_string($identifier)) {
-            throw new InvalidIdentifierException(
-                is_object($identifier) ? get_class($identifier) : gettype($identifier),
-                '\Fully\Qualified\ClassName'
-            );
-        }
-        return ltrim($identifier, '\\');
-    }
-
-
-
-    /**
-     * @param string $type
-     * @return CoffeeMakerInterface
-     * @throws InvalidDataTypeException
-     * @throws InvalidClassException
-     */
-    private function getCoffeeMaker($type)
-    {
-        if ( ! $this->coffee_makers->has($type)) {
-            throw new OutOfBoundsException(
-                __('The requested coffee maker is either missing or invalid.', 'event_espresso')
-            );
-        }
-        return $this->coffee_makers->get($type);
-    }
-
-
-
-    /**
-     * Retrieves all recipes that use a wildcard "*" in their identifier
-     * This allows recipes to be set up for handling
-     * legacy classes that do not support PSR-4 autoloading.
-     * for example:
-     * using "EEM_*" for a recipe identifier would target all legacy models like EEM_Attendee
-     *
-     * @return array
-     */
-    private function getDefaultRecipes()
-    {
-        $default_recipes = array();
-        $this->recipes->rewind();
-        while ($this->recipes->valid()) {
-            $identifier = $this->recipes->getInfo();
-            // does this recipe use a wildcard ? (but is NOT the global default)
-            if ($identifier !== Recipe::DEFAULT_ID && strpos($identifier, '*') !== false) {
-                // strip the wildcard and use identifier as key
-                $default_recipes[str_replace('*', '', $identifier)] = $this->recipes->current();
-            }
-            $this->recipes->next();
-        }
-        return $default_recipes;
-    }
-
-
-
-    /**
-     * clones a default recipe and then copies details
-     * from the incoming request to it so that it can be used
-     *
-     * @param RecipeInterface $default_recipe
-     * @param string          $identifier
-     * @param string          $type
-     * @return RecipeInterface
-     */
-    private function copyDefaultRecipe(RecipeInterface $default_recipe, $identifier, $type = '')
-    {
-        $recipe = clone($default_recipe);
-        if ( ! empty($type)) {
-            $recipe->setType($type);
-        }
-        // is this the base default recipe ?
-        if ($default_recipe->identifier() === Recipe::DEFAULT_ID) {
-            $recipe->setIdentifier($identifier);
-            $recipe->setFqcn($identifier);
-            return $recipe;
-        }
-        $recipe->setIdentifier($identifier);
-        foreach ($default_recipe->paths() as $path) {
-            $path = str_replace('*', $identifier, $path);
-            if (is_readable($path)) {
-                $recipe->setPaths($path);
-            }
-        }
-        $recipe->setFqcn($identifier);
-        return $recipe;
-    }
-
-
-
-    /**
-     * @param  string $identifier Identifier for the entity class that the service applies to
-     *                            Typically a Fully Qualified Class Name
-     * @param mixed  $service
-     * @return object
-     * @throws InvalidServiceException
-     */
-    private function validateService($identifier, $service)
-    {
-        if ( ! is_object($service)) {
-            throw new InvalidServiceException(
-                $identifier,
-                $service
-            );
-        }
-        return $service;
-    }
+	/**
+	 * This was the best coffee related name I could think of to represent class name "aliases"
+	 * So classes can be found via an alias identifier,
+	 * that is revealed when it is run through... the filters... eh? get it?
+	 *
+	 * @var array $filters
+	 */
+	private $filters = array();
+
+	/**
+	 * These are the classes that will actually build the objects (to order of course)
+	 *
+	 * @var array $coffee_makers
+	 */
+	private $coffee_makers = array();
+
+	/**
+	 * where the instantiated "singleton" objects are stored
+	 *
+	 * @var CollectionInterface $carafe
+	 */
+	private $carafe;
+
+	/**
+	 * collection of Recipes that instruct us how to brew objects
+	 *
+	 * @var CollectionInterface $recipes
+	 */
+	private $recipes;
+
+	/**
+	 * collection of closures for brewing objects
+	 *
+	 * @var CollectionInterface $reservoir
+	 */
+	private $reservoir;
+
+
+
+	/**
+	 * CoffeeShop constructor
+	 */
+	public function __construct()
+	{
+		// array for storing class aliases
+		$this->filters = array();
+		// create collection for storing shared services
+		$this->carafe = new LooseCollection( '' );
+		// create collection for storing recipes that tell how to build services and entities
+		$this->recipes = new Collection('EventEspresso\core\services\container\RecipeInterface');
+		// create collection for storing closures for constructing new entities
+		$this->reservoir = new Collection('Closure');
+		// create collection for storing the generators that build our services and entity closures
+		$this->coffee_makers = new Collection('EventEspresso\core\services\container\CoffeeMakerInterface');
+	}
+
+
+
+	/**
+	 * Returns true if the container can return an entry for the given identifier.
+	 * Returns false otherwise.
+	 * `has($identifier)` returning true does not mean that `get($identifier)` will not throw an exception.
+	 * It does however mean that `get($identifier)` will not throw a `ServiceNotFoundException`.
+	 *
+	 * @param string $identifier  Identifier of the entry to look for.
+	 *                            Typically a Fully Qualified Class Name
+	 * @return boolean
+	 */
+	public function has($identifier)
+	{
+		$identifier = $this->filterIdentifier($identifier);
+		return $this->carafe->has($identifier);
+	}
+
+
+
+	/**
+	 * finds a previously brewed (SHARED) service and returns it
+	 *
+	 * @param  string $identifier Identifier for the entity class to be constructed.
+	 *                            Typically a Fully Qualified Class Name
+	 * @return mixed
+	 * @throws ServiceNotFoundException No service was found for this identifier.
+	 */
+	public function get($identifier)
+	{
+		$identifier = $this->filterIdentifier($identifier);
+		if ($this->carafe->has($identifier)) {
+			return $this->carafe->get($identifier);
+		}
+		throw new ServiceNotFoundException($identifier);
+	}
+
+
+
+	/**
+	 * returns an instance of the requested entity type using the supplied arguments.
+	 * If a shared service is requested and an instance is already in the carafe, then it will be returned.
+	 * If it is not already in the carafe, then the service will be constructed, added to the carafe, and returned
+	 * If the request is for a new entity and a closure exists in the reservoir for creating it,
+	 * then a new entity will be instantiated from the closure and returned.
+	 * If a closure does not exist, then one will be built and added to the reservoir
+	 * before instantiating the requested entity.
+	 *
+	 * @param  string $identifier Identifier for the entity class to be constructed.
+	 *                            Typically a Fully Qualified Class Name
+	 * @param array   $arguments  an array of arguments to be passed to the entity constructor
+	 * @param string  $type
+	 * @return mixed
+	 * @throws ServiceNotFoundException No service was found for this identifier.
+	 */
+	public function brew($identifier, $arguments = array(), $type = '')
+	{
+		// resolve any class aliases that may exist
+		$identifier = $this->filterIdentifier($identifier);
+		try {
+			// is a shared service being requested?
+			if (empty($type) || $type === CoffeeMaker::BREW_SHARED) {
+				// if a shared service was requested and an instance is in the carafe, then return it
+				return $this->get($identifier);
+			}
+		} catch (ServiceNotFoundException $e) {
+			// if not then we'll just catch the ServiceNotFoundException but not do anything just yet,
+			// and instead, attempt to build whatever was requested
+		}
+		$brewed = false;
+		// if the reservoir doesn't have a closure already for the requested identifier,
+		// then neither a shared service nor a closure for making entities has been built yet
+		if ( ! $this->reservoir->has($identifier)) {
+			// so let's brew something up and add it to the proper collection
+			$brewed = $this->makeCoffee($identifier, $arguments, $type);
+		}
+		// was the brewed item a callable factory function ?
+		if (is_callable($brewed)) {
+			// then instantiate a new entity from the cached closure
+			$entity = $brewed($arguments);
+		} else if ($brewed) {
+			// requested object was a shared entity, so attempt to get it from the carafe again
+			// because if it wasn't there before, then it should have just been brewed and added,
+			// but if it still isn't there, then this time
+			// the thrown ServiceNotFoundException will not be caught
+			$entity = $this->get($identifier);
+		} else {
+			// if identifier is for a non-shared entity,
+			// then either a cached closure already existed, or was just brewed
+			$closure = $this->reservoir->get($identifier);
+			$entity = $closure($arguments);
+		}
+		return $entity;
+	}
+
+
+
+	/**
+	 * @param CoffeeMakerInterface $coffee_maker
+	 * @param string               $type
+	 * @return bool
+	 */
+	public function addCoffeeMaker(CoffeeMakerInterface $coffee_maker, $type)
+	{
+		$type = CoffeeMaker::validateType($type);
+		return $this->coffee_makers->add($coffee_maker, $type);
+	}
+
+
+
+	/**
+	 * @param string   $identifier
+	 * @param callable $closure
+	 * @return callable|null
+	 */
+	public function addClosure($identifier, $closure)
+	{
+		if ( ! is_callable($closure)) {
+			throw new InvalidDataTypeException('$closure', $closure, 'Closure');
+		}
+		$identifier = $this->processIdentifier($identifier);
+		if ($this->reservoir->add($closure, $identifier)) {
+			return $closure;
+		}
+		return null;
+	}
+
+
+
+	/**
+	 * @param  string $identifier Identifier for the entity class that the service applies to
+	 *                            Typically a Fully Qualified Class Name
+	 * @param mixed  $service
+	 * @return bool
+	 */
+	public function addService($identifier, $service)
+	{
+		$identifier = $this->processIdentifier($identifier);
+		$service = $this->validateService($identifier, $service);
+		return $this->carafe->add($service, $identifier);
+	}
+
+
+
+	/**
+	 * Adds instructions on how to brew objects
+	 *
+	 * @param RecipeInterface $recipe
+	 * @return mixed
+	 */
+	public function addRecipe(RecipeInterface $recipe)
+	{
+		$this->addAliases($recipe->identifier(), $recipe->filters());
+		$identifier = $this->processIdentifier($recipe->identifier());
+		return $this->recipes->add($recipe, $identifier);
+	}
+
+
+
+	/**
+	 * Get instructions on how to brew objects
+	 *
+	 * @param  string $identifier Identifier for the entity class that the recipe applies to
+	 *                            Typically a Fully Qualified Class Name
+	 * @param string $type
+	 * @return RecipeInterface
+	 */
+	public function getRecipe($identifier, $type = '')
+	{
+		$identifier = $this->processIdentifier($identifier);
+		if ($this->recipes->has($identifier)) {
+			return $this->recipes->get($identifier);
+		}
+		$default_recipes = $this->getDefaultRecipes();
+		$matches = array();
+		foreach ($default_recipes as $wildcard => $default_recipe) {
+			// is the wildcard recipe prefix in the identifier ?
+			if (strpos($identifier, $wildcard) !== false) {
+				// track matches and use the number of wildcard characters matched for the key
+				$matches[strlen($wildcard)] = $default_recipe;
+			}
+		}
+		if (count($matches) > 0) {
+			// sort our recipes by the number of wildcard characters matched
+			ksort($matches);
+			// then grab the last recipe form the list, since it had the most matching characters
+			$match = array_pop($matches);
+			// since we are using a default recipe, we need to set it's identifier and fqcn
+			return $this->copyDefaultRecipe($match, $identifier, $type);
+		}
+		if ($this->recipes->has(Recipe::DEFAULT_ID)) {
+			// since we are using a default recipe, we need to set it's identifier and fqcn
+			return $this->copyDefaultRecipe($this->recipes->get(Recipe::DEFAULT_ID), $identifier, $type);
+		}
+		throw new OutOfBoundsException(__('Could not brew coffee because no recipes were found.', 'event_espresso'));
+	}
+
+
+
+	/**
+	 * adds class name aliases to list of filters
+	 *
+	 * @param  string $identifier Identifier for the entity class that the alias applies to
+	 *                            Typically a Fully Qualified Class Name
+	 * @param  array  $aliases
+	 * @return void
+	 * @throws InvalidIdentifierException
+	 */
+	public function addAliases($identifier, $aliases)
+	{
+		if (empty($aliases)) {
+			return;
+		}
+		$identifier = $this->processIdentifier($identifier);
+		foreach ((array)$aliases as $alias) {
+			$this->filters[$this->processIdentifier($alias)] = $identifier;
+		}
+	}
+
+
+
+	/**
+	 * Adds a service to one of the internal collections
+	 *
+	 * @param        $identifier
+	 * @param array  $arguments
+	 * @param string $type
+	 * @return mixed
+	 * @throws ServiceExistsException
+	 */
+	private function makeCoffee($identifier, $arguments = array(), $type = '')
+	{
+		if ((empty($type) || $type === CoffeeMaker::BREW_SHARED) && $this->has($identifier)) {
+			throw new ServiceExistsException($identifier);
+		}
+		$identifier = $this->filterIdentifier($identifier);
+		$recipe = $this->getRecipe($identifier, $type);
+		$type = ! empty($type) ? $type : $recipe->type();
+		$coffee_maker = $this->getCoffeeMaker($type);
+		return $coffee_maker->brew($recipe, $arguments);
+	}
+
+
+
+	/**
+	 * filters alias identifiers to find the real class name
+	 *
+	 * @param  string $identifier Identifier for the entity class that the filter applies to
+	 *                            Typically a Fully Qualified Class Name
+	 * @return string
+	 * @throws InvalidIdentifierException
+	 */
+	private function filterIdentifier($identifier)
+	{
+		$identifier = $this->processIdentifier($identifier);
+		return isset($this->filters[$identifier]) && ! empty($this->filters[$identifier])
+			? $this->filters[$identifier]
+			: $identifier;
+	}
+
+
+
+	/**
+	 * verifies and standardizes identifiers
+	 *
+	 * @param  string $identifier Identifier for the entity class
+	 *                            Typically a Fully Qualified Class Name
+	 * @return string
+	 * @throws InvalidIdentifierException
+	 */
+	private function processIdentifier($identifier)
+	{
+		if ( ! is_string($identifier)) {
+			throw new InvalidIdentifierException(
+				is_object($identifier) ? get_class($identifier) : gettype($identifier),
+				'\Fully\Qualified\ClassName'
+			);
+		}
+		return ltrim($identifier, '\\');
+	}
+
+
+
+	/**
+	 * @param string $type
+	 * @return CoffeeMakerInterface
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidClassException
+	 */
+	private function getCoffeeMaker($type)
+	{
+		if ( ! $this->coffee_makers->has($type)) {
+			throw new OutOfBoundsException(
+				__('The requested coffee maker is either missing or invalid.', 'event_espresso')
+			);
+		}
+		return $this->coffee_makers->get($type);
+	}
+
+
+
+	/**
+	 * Retrieves all recipes that use a wildcard "*" in their identifier
+	 * This allows recipes to be set up for handling
+	 * legacy classes that do not support PSR-4 autoloading.
+	 * for example:
+	 * using "EEM_*" for a recipe identifier would target all legacy models like EEM_Attendee
+	 *
+	 * @return array
+	 */
+	private function getDefaultRecipes()
+	{
+		$default_recipes = array();
+		$this->recipes->rewind();
+		while ($this->recipes->valid()) {
+			$identifier = $this->recipes->getInfo();
+			// does this recipe use a wildcard ? (but is NOT the global default)
+			if ($identifier !== Recipe::DEFAULT_ID && strpos($identifier, '*') !== false) {
+				// strip the wildcard and use identifier as key
+				$default_recipes[str_replace('*', '', $identifier)] = $this->recipes->current();
+			}
+			$this->recipes->next();
+		}
+		return $default_recipes;
+	}
+
+
+
+	/**
+	 * clones a default recipe and then copies details
+	 * from the incoming request to it so that it can be used
+	 *
+	 * @param RecipeInterface $default_recipe
+	 * @param string          $identifier
+	 * @param string          $type
+	 * @return RecipeInterface
+	 */
+	private function copyDefaultRecipe(RecipeInterface $default_recipe, $identifier, $type = '')
+	{
+		$recipe = clone($default_recipe);
+		if ( ! empty($type)) {
+			$recipe->setType($type);
+		}
+		// is this the base default recipe ?
+		if ($default_recipe->identifier() === Recipe::DEFAULT_ID) {
+			$recipe->setIdentifier($identifier);
+			$recipe->setFqcn($identifier);
+			return $recipe;
+		}
+		$recipe->setIdentifier($identifier);
+		foreach ($default_recipe->paths() as $path) {
+			$path = str_replace('*', $identifier, $path);
+			if (is_readable($path)) {
+				$recipe->setPaths($path);
+			}
+		}
+		$recipe->setFqcn($identifier);
+		return $recipe;
+	}
+
+
+
+	/**
+	 * @param  string $identifier Identifier for the entity class that the service applies to
+	 *                            Typically a Fully Qualified Class Name
+	 * @param mixed  $service
+	 * @return object
+	 * @throws InvalidServiceException
+	 */
+	private function validateService($identifier, $service)
+	{
+		if ( ! is_object($service)) {
+			throw new InvalidServiceException(
+				$identifier,
+				$service
+			);
+		}
+		return $service;
+	}
 
 }
 // End of file CoffeeShop.php

core/services/container/exceptions/ServiceNotFoundException.php

Indentation +23 added lines, -23 removed lines

@@ -2,7 +2,7 @@ 
 namespace EventEspresso\core\services\container\exceptions;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -18,28 +18,28 @@ 
 class ServiceNotFoundException extends \RuntimeException
 {
 
-    /**
-     * ServiceNotFoundException constructor
-     *
-     * @param string     $service_name the name of the requested service
-     * @param string     $message
-     * @param int        $code
-     * @param \Exception $previous
-     */
-    public function __construct(
-        $service_name,
-        $message = '',
-        $code = 0,
-        \Exception $previous = null
-    ) {
-        if (empty($message)) {
-            $message = sprintf(
-                __('The requested service "%1$s" could not found be found in the CoffeeShop.', 'event_espresso'),
-                $service_name
-            );
-        }
-        parent::__construct($message, $code, $previous);
-    }
+	/**
+	 * ServiceNotFoundException constructor
+	 *
+	 * @param string     $service_name the name of the requested service
+	 * @param string     $message
+	 * @param int        $code
+	 * @param \Exception $previous
+	 */
+	public function __construct(
+		$service_name,
+		$message = '',
+		$code = 0,
+		\Exception $previous = null
+	) {
+		if (empty($message)) {
+			$message = sprintf(
+				__('The requested service "%1$s" could not found be found in the CoffeeShop.', 'event_espresso'),
+				$service_name
+			);
+		}
+		parent::__construct($message, $code, $previous);
+	}
 }
 // End of file ServiceNotFoundException.php
 // Location: /ServiceNotFoundException.php
\ No newline at end of file

core/services/container/exceptions/ServiceExistsException.php

Indentation +23 added lines, -23 removed lines

@@ -2,7 +2,7 @@ 
 namespace EventEspresso\core\services\container\exceptions;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -19,28 +19,28 @@ 
 {
 
 
-    /**
-     * ServiceExistsException constructor
-     *
-     * @param string     $service_name the name of the requested service
-     * @param string     $message
-     * @param int        $code
-     * @param \Exception $previous
-     */
-    public function __construct(
-        $service_name,
-        $message = '',
-        $code = 0,
-        \Exception $previous = null
-    ) {
-        if (empty($message)) {
-            $message = sprintf(
-                __('The "%1$s" service already exists in the CoffeeShop and can not be added again.', 'event_espresso'),
-                $service_name
-            );
-        }
-        parent::__construct($message, $code, $previous);
-    }
+	/**
+	 * ServiceExistsException constructor
+	 *
+	 * @param string     $service_name the name of the requested service
+	 * @param string     $message
+	 * @param int        $code
+	 * @param \Exception $previous
+	 */
+	public function __construct(
+		$service_name,
+		$message = '',
+		$code = 0,
+		\Exception $previous = null
+	) {
+		if (empty($message)) {
+			$message = sprintf(
+				__('The "%1$s" service already exists in the CoffeeShop and can not be added again.', 'event_espresso'),
+				$service_name
+			);
+		}
+		parent::__construct($message, $code, $previous);
+	}
 
 
 }

core/services/container/exceptions/InvalidServiceException.php

Indentation +24 added lines, -24 removed lines

@@ -2,7 +2,7 @@ 
 namespace EventEspresso\core\services\container\exceptions;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -18,29 +18,29 @@ 
 class InvalidServiceException extends \UnexpectedValueException
 {
 
-    /**
-     * InvalidServiceException constructor.
-     *
-     * @param string     $service_name the name of the requested service
-     * @param string     $actual       classname of what we got
-     * @param string     $message
-     * @param int        $code
-     * @param \Exception $previous
-     */
-    public function __construct($service_name, $actual, $message = '', $code = 0, \Exception $previous = null)
-    {
-        if (empty($message)) {
-            $message = sprintf(
-                __(
-                    'The "%1$s" service could not be retrieved from the CoffeeShop, but "%2$s" was received.',
-                    'event_espresso'
-                ),
-                $service_name,
-                print_r($actual, true)
-            );
-        }
-        parent::__construct($message, $code, $previous);
-    }
+	/**
+	 * InvalidServiceException constructor.
+	 *
+	 * @param string     $service_name the name of the requested service
+	 * @param string     $actual       classname of what we got
+	 * @param string     $message
+	 * @param int        $code
+	 * @param \Exception $previous
+	 */
+	public function __construct($service_name, $actual, $message = '', $code = 0, \Exception $previous = null)
+	{
+		if (empty($message)) {
+			$message = sprintf(
+				__(
+					'The "%1$s" service could not be retrieved from the CoffeeShop, but "%2$s" was received.',
+					'event_espresso'
+				),
+				$service_name,
+				print_r($actual, true)
+			);
+		}
+		parent::__construct($message, $code, $previous);
+	}
 
 }
 // End of file InvalidServiceException.php