class Container in Zircon Profile 8
Same name in this branch
- 8 vendor/symfony/dependency-injection/Container.php \Symfony\Component\DependencyInjection\Container
- 8 core/lib/Drupal/Core/DependencyInjection/Container.php \Drupal\Core\DependencyInjection\Container
- 8 core/lib/Drupal/Component/DependencyInjection/Container.php \Drupal\Component\DependencyInjection\Container
- 8 vendor/symfony/dependency-injection/Tests/Fixtures/php/services1-1.php \Symfony\Component\DependencyInjection\Container
- 8 core/lib/Drupal/Core/Render/Element/Container.php \Drupal\Core\Render\Element\Container
Same name and namespace in other branches
- 8.0 vendor/symfony/dependency-injection/Container.php \Symfony\Component\DependencyInjection\Container
- 8.0 vendor/symfony/dependency-injection/Tests/Fixtures/php/services1-1.php \Symfony\Component\DependencyInjection\Container
Container is a dependency injection container.
It gives access to object instances (services).
Services and parameters are simple key/pair stores.
Parameter and service keys are case insensitive.
A service id can contain lowercased letters, digits, underscores, and dots. Underscores are used to separate words, and dots to group services under namespaces:
<ul> <li>request</li> <li>mysql_session_storage</li> <li>symfony.mysql_session_storage</li> </ul>
A service can also be defined by creating a method named getXXXService(), where XXX is the camelized version of the id:
<ul> <li>request -> getRequestService()</li> <li>mysql_session_storage -> getMysqlSessionStorageService()</li> <li>symfony.mysql_session_storage -> getSymfony_MysqlSessionStorageService()</li> </ul>
The container can have three possible behaviors when a service does not exist:
- EXCEPTION_ON_INVALID_REFERENCE: Throws an exception (the default)
- NULL_ON_INVALID_REFERENCE: Returns null
- IGNORE_ON_INVALID_REFERENCE: Ignores the wrapping command asking for the reference (for instance, ignore a setter if the service does not exist)
@author Fabien Potencier <fabien@symfony.com> @author Johannes M. Schmitt <schmittjoh@gmail.com>
Hierarchy
- class \Symfony\Component\DependencyInjection\Container implements IntrospectableContainerInterface
Expanded class hierarchy of Container
28 files declare their use of Container
- BookController.php in core/
modules/ book/ src/ Controller/ BookController.php - Contains \Drupal\book\Controller\BookController.
- Bundle.php in vendor/
symfony/ http-kernel/ Bundle/ Bundle.php - CacheContextsManagerTest.php in core/
tests/ Drupal/ Tests/ Core/ Cache/ Context/ CacheContextsManagerTest.php - Contains \Drupal\Tests\Core\Cache\Context\CacheContextsManagerTest.
- ContainerAwareEventDispatcherTest.php in vendor/
symfony/ event-dispatcher/ Tests/ ContainerAwareEventDispatcherTest.php - ContainerAwareEventDispatcherTest.php in core/
tests/ Drupal/ Tests/ Component/ EventDispatcher/ ContainerAwareEventDispatcherTest.php - Contains \Drupal\Tests\Component\EventDispatcher\ContainerAwareEventDispatcherTest.
5 string references to 'Container'
- field.field.taxonomy_term.forums.forum_container.yml in core/
modules/ forum/ config/ install/ field.field.taxonomy_term.forums.forum_container.yml - core/modules/forum/config/install/field.field.taxonomy_term.forums.forum_container.yml
- Kernel::getContainerBaseClass in vendor/
symfony/ http-kernel/ Kernel.php - Gets the container's base class.
- PhpDumper::dump in vendor/
symfony/ dependency-injection/ Dumper/ PhpDumper.php - Dumps the service container as a PHP class.
- PhpDumperTest::testDump in vendor/
symfony/ dependency-injection/ Tests/ Dumper/ PhpDumperTest.php - SearchExcerptTest::testSearchExcerptSimplified in core/
modules/ search/ src/ Tests/ SearchExcerptTest.php - Tests search_excerpt() with search keywords matching simplified words.
File
- vendor/
symfony/ dependency-injection/ Container.php, line 61
Namespace
Symfony\Component\DependencyInjectionView source
class Container implements IntrospectableContainerInterface {
/**
* @var ParameterBagInterface
*/
protected $parameterBag;
protected $services = array();
protected $methodMap = array();
protected $aliases = array();
protected $scopes = array();
protected $scopeChildren = array();
protected $scopedServices = array();
protected $scopeStacks = array();
protected $loading = array();
private $underscoreMap = array(
'_' => '',
'.' => '_',
'\\' => '_',
);
/**
* Constructor.
*
* @param ParameterBagInterface $parameterBag A ParameterBagInterface instance
*/
public function __construct(ParameterBagInterface $parameterBag = null) {
$this->parameterBag = $parameterBag ?: new ParameterBag();
}
/**
* Compiles the container.
*
* This method does two things:
*
* * Parameter values are resolved;
* * The parameter bag is frozen.
*/
public function compile() {
$this->parameterBag
->resolve();
$this->parameterBag = new FrozenParameterBag($this->parameterBag
->all());
}
/**
* Returns true if the container parameter bag are frozen.
*
* @return bool true if the container parameter bag are frozen, false otherwise
*/
public function isFrozen() {
return $this->parameterBag instanceof FrozenParameterBag;
}
/**
* Gets the service container parameter bag.
*
* @return ParameterBagInterface A ParameterBagInterface instance
*/
public function getParameterBag() {
return $this->parameterBag;
}
/**
* Gets a parameter.
*
* @param string $name The parameter name
*
* @return mixed The parameter value
*
* @throws InvalidArgumentException if the parameter is not defined
*/
public function getParameter($name) {
return $this->parameterBag
->get($name);
}
/**
* Checks if a parameter exists.
*
* @param string $name The parameter name
*
* @return bool The presence of parameter in container
*/
public function hasParameter($name) {
return $this->parameterBag
->has($name);
}
/**
* Sets a parameter.
*
* @param string $name The parameter name
* @param mixed $value The parameter value
*/
public function setParameter($name, $value) {
$this->parameterBag
->set($name, $value);
}
/**
* Sets a service.
*
* Setting a service to null resets the service: has() returns false and get()
* behaves in the same way as if the service was never created.
*
* @param string $id The service identifier
* @param object $service The service instance
* @param string $scope The scope of the service
*
* @throws RuntimeException When trying to set a service in an inactive scope
* @throws InvalidArgumentException When trying to set a service in the prototype scope
*/
public function set($id, $service, $scope = self::SCOPE_CONTAINER) {
if (self::SCOPE_PROTOTYPE === $scope) {
throw new InvalidArgumentException(sprintf('You cannot set service "%s" of scope "prototype".', $id));
}
$id = strtolower($id);
if ('service_container' === $id) {
// BC: 'service_container' is no longer a self-reference but always
// $this, so ignore this call.
// @todo Throw InvalidArgumentException in next major release.
return;
}
if (self::SCOPE_CONTAINER !== $scope) {
if (!isset($this->scopedServices[$scope])) {
throw new RuntimeException(sprintf('You cannot set service "%s" of inactive scope.', $id));
}
$this->scopedServices[$scope][$id] = $service;
}
$this->services[$id] = $service;
if (method_exists($this, $method = 'synchronize' . strtr($id, $this->underscoreMap) . 'Service')) {
$this
->{$method}();
}
if (null === $service) {
if (self::SCOPE_CONTAINER !== $scope) {
unset($this->scopedServices[$scope][$id]);
}
unset($this->services[$id]);
}
}
/**
* Returns true if the given service is defined.
*
* @param string $id The service identifier
*
* @return bool true if the service is defined, false otherwise
*/
public function has($id) {
for ($i = 2;;) {
if ('service_container' === $id || isset($this->aliases[$id]) || isset($this->services[$id]) || array_key_exists($id, $this->services)) {
return true;
}
if (--$i && $id !== ($lcId = strtolower($id))) {
$id = $lcId;
}
else {
return method_exists($this, 'get' . strtr($id, $this->underscoreMap) . 'Service');
}
}
}
/**
* Gets a service.
*
* If a service is defined both through a set() method and
* with a get{$id}Service() method, the former has always precedence.
*
* @param string $id The service identifier
* @param int $invalidBehavior The behavior when the service does not exist
*
* @return object The associated service
*
* @throws ServiceCircularReferenceException When a circular reference is detected
* @throws ServiceNotFoundException When the service is not defined
* @throws \Exception if an exception has been thrown when the service has been resolved
*
* @see Reference
*/
public function get($id, $invalidBehavior = self::EXCEPTION_ON_INVALID_REFERENCE) {
// Attempt to retrieve the service by checking first aliases then
// available services. Service IDs are case insensitive, however since
// this method can be called thousands of times during a request, avoid
// calling strtolower() unless necessary.
for ($i = 2;;) {
if ('service_container' === $id) {
return $this;
}
if (isset($this->aliases[$id])) {
$id = $this->aliases[$id];
}
// Re-use shared service instance if it exists.
if (isset($this->services[$id]) || array_key_exists($id, $this->services)) {
return $this->services[$id];
}
if (isset($this->loading[$id])) {
throw new ServiceCircularReferenceException($id, array_keys($this->loading));
}
if (isset($this->methodMap[$id])) {
$method = $this->methodMap[$id];
}
elseif (--$i && $id !== ($lcId = strtolower($id))) {
$id = $lcId;
continue;
}
elseif (method_exists($this, $method = 'get' . strtr($id, $this->underscoreMap) . 'Service')) {
// $method is set to the right value, proceed
}
else {
if (self::EXCEPTION_ON_INVALID_REFERENCE === $invalidBehavior) {
if (!$id) {
throw new ServiceNotFoundException($id);
}
$alternatives = array();
foreach ($this->services as $key => $associatedService) {
$lev = levenshtein($id, $key);
if ($lev <= strlen($id) / 3 || false !== strpos($key, $id)) {
$alternatives[] = $key;
}
}
throw new ServiceNotFoundException($id, null, null, $alternatives);
}
return;
}
$this->loading[$id] = true;
try {
$service = $this
->{$method}();
} catch (\Exception $e) {
unset($this->loading[$id]);
if (array_key_exists($id, $this->services)) {
unset($this->services[$id]);
}
if ($e instanceof InactiveScopeException && self::EXCEPTION_ON_INVALID_REFERENCE !== $invalidBehavior) {
return;
}
throw $e;
}
unset($this->loading[$id]);
return $service;
}
}
/**
* Returns true if the given service has actually been initialized.
*
* @param string $id The service identifier
*
* @return bool true if service has already been initialized, false otherwise
*/
public function initialized($id) {
$id = strtolower($id);
if ('service_container' === $id) {
// BC: 'service_container' was a synthetic service previously.
// @todo Change to false in next major release.
return true;
}
if (isset($this->aliases[$id])) {
$id = $this->aliases[$id];
}
return isset($this->services[$id]) || array_key_exists($id, $this->services);
}
/**
* Gets all service ids.
*
* @return array An array of all defined service ids
*/
public function getServiceIds() {
$ids = array();
$r = new \ReflectionClass($this);
foreach ($r
->getMethods() as $method) {
if (preg_match('/^get(.+)Service$/', $method->name, $match)) {
$ids[] = self::underscore($match[1]);
}
}
$ids[] = 'service_container';
return array_unique(array_merge($ids, array_keys($this->services)));
}
/**
* This is called when you enter a scope.
*
* @param string $name
*
* @throws RuntimeException When the parent scope is inactive
* @throws InvalidArgumentException When the scope does not exist
*/
public function enterScope($name) {
if (!isset($this->scopes[$name])) {
throw new InvalidArgumentException(sprintf('The scope "%s" does not exist.', $name));
}
if (self::SCOPE_CONTAINER !== $this->scopes[$name] && !isset($this->scopedServices[$this->scopes[$name]])) {
throw new RuntimeException(sprintf('The parent scope "%s" must be active when entering this scope.', $this->scopes[$name]));
}
// check if a scope of this name is already active, if so we need to
// remove all services of this scope, and those of any of its child
// scopes from the global services map
if (isset($this->scopedServices[$name])) {
$services = array(
$this->services,
$name => $this->scopedServices[$name],
);
unset($this->scopedServices[$name]);
foreach ($this->scopeChildren[$name] as $child) {
if (isset($this->scopedServices[$child])) {
$services[$child] = $this->scopedServices[$child];
unset($this->scopedServices[$child]);
}
}
// update global map
$this->services = call_user_func_array('array_diff_key', $services);
array_shift($services);
// add stack entry for this scope so we can restore the removed services later
if (!isset($this->scopeStacks[$name])) {
$this->scopeStacks[$name] = new \SplStack();
}
$this->scopeStacks[$name]
->push($services);
}
$this->scopedServices[$name] = array();
}
/**
* This is called to leave the current scope, and move back to the parent
* scope.
*
* @param string $name The name of the scope to leave
*
* @throws InvalidArgumentException if the scope is not active
*/
public function leaveScope($name) {
if (!isset($this->scopedServices[$name])) {
throw new InvalidArgumentException(sprintf('The scope "%s" is not active.', $name));
}
// remove all services of this scope, or any of its child scopes from
// the global service map
$services = array(
$this->services,
$this->scopedServices[$name],
);
unset($this->scopedServices[$name]);
foreach ($this->scopeChildren[$name] as $child) {
if (isset($this->scopedServices[$child])) {
$services[] = $this->scopedServices[$child];
unset($this->scopedServices[$child]);
}
}
// update global map
$this->services = call_user_func_array('array_diff_key', $services);
// check if we need to restore services of a previous scope of this type
if (isset($this->scopeStacks[$name]) && count($this->scopeStacks[$name]) > 0) {
$services = $this->scopeStacks[$name]
->pop();
$this->scopedServices += $services;
if ($this->scopeStacks[$name]
->isEmpty()) {
unset($this->scopeStacks[$name]);
}
foreach ($services as $array) {
foreach ($array as $id => $service) {
$this
->set($id, $service, $name);
}
}
}
}
/**
* Adds a scope to the container.
*
* @param ScopeInterface $scope
*
* @throws InvalidArgumentException
*/
public function addScope(ScopeInterface $scope) {
$name = $scope
->getName();
$parentScope = $scope
->getParentName();
if (self::SCOPE_CONTAINER === $name || self::SCOPE_PROTOTYPE === $name) {
throw new InvalidArgumentException(sprintf('The scope "%s" is reserved.', $name));
}
if (isset($this->scopes[$name])) {
throw new InvalidArgumentException(sprintf('A scope with name "%s" already exists.', $name));
}
if (self::SCOPE_CONTAINER !== $parentScope && !isset($this->scopes[$parentScope])) {
throw new InvalidArgumentException(sprintf('The parent scope "%s" does not exist, or is invalid.', $parentScope));
}
$this->scopes[$name] = $parentScope;
$this->scopeChildren[$name] = array();
// normalize the child relations
while ($parentScope !== self::SCOPE_CONTAINER) {
$this->scopeChildren[$parentScope][] = $name;
$parentScope = $this->scopes[$parentScope];
}
}
/**
* Returns whether this container has a certain scope.
*
* @param string $name The name of the scope
*
* @return bool
*/
public function hasScope($name) {
return isset($this->scopes[$name]);
}
/**
* Returns whether this scope is currently active.
*
* This does not actually check if the passed scope actually exists.
*
* @param string $name
*
* @return bool
*/
public function isScopeActive($name) {
return isset($this->scopedServices[$name]);
}
/**
* Camelizes a string.
*
* @param string $id A string to camelize
*
* @return string The camelized string
*/
public static function camelize($id) {
return strtr(ucwords(strtr($id, array(
'_' => ' ',
'.' => '_ ',
'\\' => '_ ',
))), array(
' ' => '',
));
}
/**
* A string to underscore.
*
* @param string $id The string to underscore
*
* @return string The underscored string
*/
public static function underscore($id) {
return strtolower(preg_replace(array(
'/([A-Z]+)([A-Z][a-z])/',
'/([a-z\\d])([A-Z])/',
), array(
'\\1_\\2',
'\\1_\\2',
), strtr($id, '_', '.')));
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
protected | property | ||
Container:: |
private | property | ||
Container:: |
public | function |
Adds a scope to the container. Overrides ContainerInterface:: |
|
Container:: |
public static | function | Camelizes a string. | |
Container:: |
public | function | Compiles the container. | |
Container:: |
public | function |
This is called when you enter a scope. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Gets a service. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Gets a parameter. Overrides ContainerInterface:: |
|
Container:: |
public | function | Gets the service container parameter bag. | |
Container:: |
public | function | Gets all service ids. | |
Container:: |
public | function |
Returns true if the given service is defined. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Checks if a parameter exists. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Returns whether this container has a certain scope. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Returns true if the given service has actually been initialized. Overrides IntrospectableContainerInterface:: |
|
Container:: |
public | function | Returns true if the container parameter bag are frozen. | |
Container:: |
public | function |
Returns whether this scope is currently active. Overrides ContainerInterface:: |
|
Container:: |
public | function |
This is called to leave the current scope, and move back to the parent
scope. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Sets a service. Overrides ContainerInterface:: |
|
Container:: |
public | function |
Sets a parameter. Overrides ContainerInterface:: |
|
Container:: |
public static | function | A string to underscore. | |
Container:: |
public | function | Constructor. | |
ContainerInterface:: |
constant | |||
ContainerInterface:: |
constant | |||
ContainerInterface:: |
constant | |||
ContainerInterface:: |
constant | |||
ContainerInterface:: |
constant |