mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
09210efbc0
Conflicts: composer.json control/Session.php docs/en/05_Contributing/01_Code.md docs/en/05_Contributing/02_Release_Process.md forms/FormField.php model/DataQuery.php model/Image.php model/queries/SQLConditionalExpression.php view/SSViewer.php view/ViewableData.php
939 lines
28 KiB
PHP
939 lines
28 KiB
PHP
<?php
|
|
|
|
require_once FRAMEWORK_PATH . '/src/SilverStripe/Framework/Injector/Factory.php';
|
|
|
|
require_once __DIR__ . '/InjectionCreator.php';
|
|
require_once __DIR__ . '/SilverStripeInjectionCreator.php';
|
|
require_once __DIR__ . '/ServiceConfigurationLocator.php';
|
|
require_once __DIR__ . '/SilverStripeServiceConfigurationLocator.php';
|
|
|
|
use SilverStripe\Framework\Injector\Factory;
|
|
|
|
/**
|
|
* A simple injection manager that manages creating objects and injecting
|
|
* dependencies between them. It borrows quite a lot from ideas taken from
|
|
* Spring's configuration, but is adapted to the stateless PHP way of doing
|
|
* things.
|
|
*
|
|
* In its simplest form, the dependency injector can be used as a mechanism to
|
|
* instantiate objects. Simply call
|
|
*
|
|
* Injector::inst()->get('ClassName')
|
|
*
|
|
* and a new instance of ClassName will be created and returned to you.
|
|
*
|
|
* Classes can have specific configuration defined for them to
|
|
* indicate dependencies that should be injected. This takes the form of
|
|
* a static variable $dependencies defined in the class (or configuration),
|
|
* which indicates the name of a property that should be set.
|
|
*
|
|
* eg
|
|
*
|
|
* <code>
|
|
* class MyController extends Controller {
|
|
*
|
|
* public $permissions;
|
|
* public $defaultText;
|
|
*
|
|
* static $dependencies = array(
|
|
* 'defaultText' => 'Override in configuration',
|
|
* 'permissions' => '%$PermissionService',
|
|
* );
|
|
* }
|
|
* </code>
|
|
*
|
|
* will result in an object of type MyController having the defaultText property
|
|
* set to 'Override in configuration', and an object identified
|
|
* as PermissionService set into the property called 'permissions'. The %$
|
|
* syntax tells the injector to look the provided name up as an item to be created
|
|
* by the Injector itself.
|
|
*
|
|
* A key concept of the injector is whether to manage the object as
|
|
*
|
|
* * A pseudo-singleton, in that only one item will be created for a particular
|
|
* identifier (but the same class could be used for multiple identifiers)
|
|
* * A prototype, where the same configuration is used, but a new object is
|
|
* created each time
|
|
* * unmanaged, in which case a new object is created and injected, but no
|
|
* information about its state is managed.
|
|
*
|
|
* Additional configuration of items managed by the injector can be done by
|
|
* providing configuration for the types, either by manually loading in an
|
|
* array describing the configuration, or by specifying the configuration
|
|
* for a type via SilverStripe's configuration mechanism.
|
|
*
|
|
* Specify a configuration array of the format
|
|
*
|
|
* array(
|
|
* array(
|
|
* 'id' => 'BeanId', // the name to be used if diff from the filename
|
|
* 'priority' => 1, // priority. If another bean is defined with the same ID,
|
|
* // but has a lower priority, it is NOT overridden
|
|
* 'class' => 'ClassName', // the name of the PHP class
|
|
* 'src' => '/path/to/file' // the location of the class
|
|
* 'type' => 'singleton|prototype' // if you want prototype object generation, set it as the
|
|
* // type
|
|
* // By default, singleton is assumed
|
|
*
|
|
* 'factory' => 'FactoryService' // A factory service to use to create instances.
|
|
* 'construct' => array( // properties to set at construction
|
|
* 'scalar',
|
|
* '%$BeanId',
|
|
* )
|
|
* 'properties' => array(
|
|
* 'name' => 'value' // scalar value
|
|
* 'name' => '%$BeanId', // a reference to another bean
|
|
* 'name' => array(
|
|
* 'scalar',
|
|
* '%$BeanId'
|
|
* )
|
|
* )
|
|
* )
|
|
* // alternatively
|
|
* 'MyBean' => array(
|
|
* 'class' => 'ClassName',
|
|
* )
|
|
* // or simply
|
|
* 'OtherBean' => 'SomeClass',
|
|
* )
|
|
*
|
|
* In addition to specifying the bindings directly in the configuration,
|
|
* you can simply create a publicly accessible property on the target
|
|
* class which will automatically be injected if the autoScanProperties
|
|
* option is set to true. This means a class defined as
|
|
*
|
|
* <code>
|
|
* class MyController extends Controller {
|
|
*
|
|
* private $permissionService;
|
|
*
|
|
* public setPermissionService($p) {
|
|
* $this->permissionService = $p;
|
|
* }
|
|
* }
|
|
* </code>
|
|
*
|
|
* will have setPermissionService called if
|
|
*
|
|
* * Injector::inst()->setAutoScanProperties(true) is called and
|
|
* * A service named 'PermissionService' has been configured
|
|
*
|
|
* @author marcus@silverstripe.com.au
|
|
* @package framework
|
|
* @subpackage injector
|
|
* @license BSD License http://silverstripe.org/bsd-license/
|
|
*/
|
|
class Injector {
|
|
|
|
/**
|
|
* Local store of all services
|
|
*
|
|
* @var array
|
|
*/
|
|
private $serviceCache;
|
|
|
|
/**
|
|
* Cache of items that need to be mapped for each service that gets injected
|
|
*
|
|
* @var array
|
|
*/
|
|
private $injectMap;
|
|
|
|
/**
|
|
* A store of all the service configurations that have been defined.
|
|
*
|
|
* @var array
|
|
*/
|
|
private $specs;
|
|
|
|
/**
|
|
* A map of all the properties that should be automagically set on all
|
|
* objects instantiated by the injector
|
|
*/
|
|
private $autoProperties;
|
|
|
|
/**
|
|
* A singleton if you want to use it that way
|
|
*
|
|
* @var Injector
|
|
*/
|
|
private static $instance;
|
|
|
|
/**
|
|
* Indicates whether or not to automatically scan properties in injected objects to auto inject
|
|
* stuff, similar to the way grails does things.
|
|
*
|
|
* @var boolean
|
|
*/
|
|
private $autoScanProperties = false;
|
|
|
|
/**
|
|
* The default factory used to create new instances.
|
|
*
|
|
* The {@link InjectionCreator} is used by default, which simply directly
|
|
* creates objects. This can be changed to use a different default creation
|
|
* method if desired.
|
|
*
|
|
* Each individual component can also specify a custom factory to use by
|
|
* using the `factory` parameter.
|
|
*
|
|
* @var Factory
|
|
*/
|
|
protected $objectCreator;
|
|
|
|
/**
|
|
* Locator for determining Config properties for services
|
|
*
|
|
* @var ServiceConfigurationLocator
|
|
*/
|
|
protected $configLocator;
|
|
|
|
/**
|
|
* Create a new injector.
|
|
*
|
|
* @param array $config
|
|
* Service configuration
|
|
*/
|
|
public function __construct($config = null) {
|
|
$this->injectMap = array();
|
|
$this->serviceCache = array(
|
|
'Injector' => $this,
|
|
);
|
|
$this->specs = array(
|
|
'Injector' => array('class' => 'Injector')
|
|
);
|
|
|
|
$this->autoProperties = array();
|
|
|
|
|
|
$creatorClass = isset($config['creator']) ? $config['creator'] : 'InjectionCreator';
|
|
$locatorClass = isset($config['locator']) ? $config['locator'] : 'ServiceConfigurationLocator';
|
|
|
|
$this->objectCreator = new $creatorClass;
|
|
$this->configLocator = new $locatorClass;
|
|
|
|
if ($config) {
|
|
$this->load($config);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The injector instance this one was copied from when Injector::nest() was called.
|
|
*
|
|
* @var Injector
|
|
*/
|
|
protected $nestedFrom = null;
|
|
|
|
/**
|
|
* If a user wants to use the injector as a static reference
|
|
*
|
|
* @param array $config
|
|
* @return Injector
|
|
*/
|
|
public static function inst($config=null) {
|
|
if (!self::$instance) {
|
|
self::$instance = new Injector($config);
|
|
}
|
|
return self::$instance;
|
|
}
|
|
|
|
/**
|
|
* Sets the default global injector instance.
|
|
*
|
|
* @param Injector $instance
|
|
* @return Injector Reference to new active Injector instance
|
|
*/
|
|
public static function set_inst(Injector $instance) {
|
|
return self::$instance = $instance;
|
|
}
|
|
|
|
/**
|
|
* Make the newly active {@link Injector} be a copy of the current active
|
|
* {@link Injector} instance.
|
|
*
|
|
* You can then make changes to the injector with methods such as
|
|
* {@link Injector::inst()->registerService()} which will be discarded
|
|
* upon a subsequent call to {@link Injector::unnest()}
|
|
*
|
|
* @return Injector Reference to new active Injector instance
|
|
*/
|
|
public static function nest() {
|
|
$current = self::$instance;
|
|
|
|
$new = clone $current;
|
|
$new->nestedFrom = $current;
|
|
return self::set_inst($new);
|
|
}
|
|
|
|
/**
|
|
* Change the active Injector back to the Injector instance the current active
|
|
* Injector object was copied from.
|
|
*
|
|
* @return Injector Reference to restored active Injector instance
|
|
*/
|
|
public static function unnest() {
|
|
if (self::inst()->nestedFrom) {
|
|
self::set_inst(self::inst()->nestedFrom);
|
|
}
|
|
else {
|
|
user_error(
|
|
"Unable to unnest root Injector, please make sure you don't have mis-matched nest/unnest",
|
|
E_USER_WARNING
|
|
);
|
|
}
|
|
return self::inst();
|
|
}
|
|
|
|
/**
|
|
* Indicate whether we auto scan injected objects for properties to set.
|
|
*
|
|
* @param boolean $val
|
|
*/
|
|
public function setAutoScanProperties($val) {
|
|
$this->autoScanProperties = $val;
|
|
}
|
|
|
|
/**
|
|
* Sets the default factory to use for creating new objects.
|
|
*
|
|
* @param Factory $obj
|
|
*/
|
|
public function setObjectCreator(Factory $obj) {
|
|
$this->objectCreator = $obj;
|
|
}
|
|
|
|
/**
|
|
* @return Factory
|
|
*/
|
|
public function getObjectCreator() {
|
|
return $this->objectCreator;
|
|
}
|
|
|
|
/**
|
|
* Set the configuration locator
|
|
* @param ServiceConfigurationLocator $configLocator
|
|
*/
|
|
public function setConfigLocator($configLocator) {
|
|
$this->configLocator = $configLocator;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the configuration locator
|
|
* @return ServiceConfigurationLocator
|
|
*/
|
|
public function getConfigLocator() {
|
|
return $this->configLocator;
|
|
}
|
|
|
|
/**
|
|
* Add in a specific mapping that should be catered for on a type.
|
|
* This allows configuration of what should occur when an object
|
|
* of a particular type is injected, and what items should be injected
|
|
* for those properties / methods.
|
|
*
|
|
* @param string $class The class to set a mapping for
|
|
* @param string $property The property to set the mapping for
|
|
* @param string $toInject The registered type that will be injected
|
|
* @param string $injectVia Whether to inject by setting a property or calling a setter
|
|
*/
|
|
public function setInjectMapping($class, $property, $toInject, $injectVia = 'property') {
|
|
$mapping = isset($this->injectMap[$class]) ? $this->injectMap[$class] : array();
|
|
|
|
$mapping[$property] = array('name' => $toInject, 'type' => $injectVia);
|
|
|
|
$this->injectMap[$class] = $mapping;
|
|
}
|
|
|
|
/**
|
|
* Add an object that should be automatically set on managed objects
|
|
*
|
|
* This allows you to specify, for example, that EVERY managed object
|
|
* will be automatically inject with a log object by the following
|
|
*
|
|
* $injector->addAutoProperty('log', new Logger());
|
|
*
|
|
* @param string $property
|
|
* the name of the property
|
|
* @param object $object
|
|
* the object to be set
|
|
*/
|
|
public function addAutoProperty($property, $object) {
|
|
$this->autoProperties[$property] = $object;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Load services using the passed in configuration for those services
|
|
*
|
|
* @param array $config
|
|
*/
|
|
public function load($config = array()) {
|
|
$services = array();
|
|
|
|
foreach ($config as $specId => $spec) {
|
|
if (is_string($spec)) {
|
|
$spec = array('class' => $spec);
|
|
}
|
|
|
|
$file = isset($spec['src']) ? $spec['src'] : null;
|
|
$name = null;
|
|
|
|
if (file_exists($file)) {
|
|
$filename = basename($file);
|
|
$name = substr($filename, 0, strrpos($filename, '.'));
|
|
}
|
|
|
|
// class is whatever's explicitly set,
|
|
$class = isset($spec['class']) ? $spec['class'] : $name;
|
|
|
|
// or the specid if nothing else available.
|
|
if (!$class && is_string($specId)) {
|
|
$class = $specId;
|
|
}
|
|
|
|
// make sure the class is set...
|
|
$spec['class'] = $class;
|
|
|
|
$id = is_string($specId) ? $specId : (isset($spec['id']) ? $spec['id'] : $class);
|
|
|
|
$priority = isset($spec['priority']) ? $spec['priority'] : 1;
|
|
|
|
// see if we already have this defined. If so, check priority weighting
|
|
if (isset($this->specs[$id]) && isset($this->specs[$id]['priority'])) {
|
|
if ($this->specs[$id]['priority'] > $priority) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// okay, actually include it now we know we're going to use it
|
|
if (file_exists($file)) {
|
|
require_once $file;
|
|
}
|
|
|
|
// make sure to set the id for later when instantiating
|
|
// to ensure we get cached
|
|
$spec['id'] = $id;
|
|
|
|
// We've removed this check because new functionality means that the 'class' field doesn't need to refer
|
|
// specifically to a class anymore - it could be a compound statement, ala SilverStripe's old Object::create
|
|
// functionality
|
|
//
|
|
// if (!class_exists($class)) {
|
|
// throw new Exception("Failed to load '$class' from $file");
|
|
// }
|
|
|
|
// store the specs for now - we lazy load on demand later on.
|
|
$this->specs[$id] = $spec;
|
|
|
|
// EXCEPT when there's already an existing instance at this id.
|
|
// if so, we need to instantiate and replace immediately
|
|
if (isset($this->serviceCache[$id])) {
|
|
$this->updateSpecConstructor($spec);
|
|
$this->instantiate($spec, $id);
|
|
}
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Update the configuration of an already defined service
|
|
*
|
|
* Use this if you don't want to register a complete new config, just append
|
|
* to an existing configuration. Helpful to avoid overwriting someone else's changes
|
|
*
|
|
* updateSpec('RequestProcessor', 'filters', '%$MyFilter')
|
|
*
|
|
* @param string $id
|
|
* The name of the service to update the definition for
|
|
* @param string $property
|
|
* The name of the property to update.
|
|
* @param mixed $value
|
|
* The value to set
|
|
* @param boolean $append
|
|
* Whether to append (the default) when the property is an array
|
|
*/
|
|
public function updateSpec($id, $property, $value, $append = true) {
|
|
if (isset($this->specs[$id]['properties'][$property])) {
|
|
// by ref so we're updating the actual value
|
|
$current = &$this->specs[$id]['properties'][$property];
|
|
if (is_array($current) && $append) {
|
|
$current[] = $value;
|
|
} else {
|
|
$this->specs[$id]['properties'][$property] = $value;
|
|
}
|
|
|
|
// and reload the object; existing bindings don't get
|
|
// updated though! (for now...)
|
|
if (isset($this->serviceCache[$id])) {
|
|
$this->instantiate(array('class'=>$id), $id);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update a class specification to convert constructor configuration information if needed
|
|
*
|
|
* We do this as a separate process to avoid unneeded calls to convertServiceProperty
|
|
*
|
|
* @param array $spec
|
|
* The class specification to update
|
|
*/
|
|
protected function updateSpecConstructor(&$spec) {
|
|
if (isset($spec['constructor'])) {
|
|
$spec['constructor'] = $this->convertServiceProperty($spec['constructor']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Recursively convert a value into its proper representation with service references
|
|
* resolved to actual objects
|
|
*
|
|
* @param string $value
|
|
*/
|
|
public function convertServiceProperty($value) {
|
|
if (is_array($value)) {
|
|
$newVal = array();
|
|
foreach ($value as $k => $v) {
|
|
$newVal[$k] = $this->convertServiceProperty($v);
|
|
}
|
|
return $newVal;
|
|
}
|
|
|
|
if (is_string($value) && strpos($value, '%$') === 0) {
|
|
$id = substr($value, 2);
|
|
return $this->get($id);
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Instantiate a managed object
|
|
*
|
|
* Given a specification of the form
|
|
*
|
|
* array(
|
|
* 'class' => 'ClassName',
|
|
* 'properties' => array('property' => 'scalar', 'other' => '%$BeanRef')
|
|
* 'id' => 'ServiceId',
|
|
* 'type' => 'singleton|prototype'
|
|
* )
|
|
*
|
|
* will create a new object, store it in the service registry, and
|
|
* set any relevant properties
|
|
*
|
|
* Optionally, you can pass a class name directly for creation
|
|
*
|
|
* To access this from the outside, you should call ->get('Name') to ensure
|
|
* the appropriate checks are made on the specific type.
|
|
*
|
|
*
|
|
* @param array $spec
|
|
* The specification of the class to instantiate
|
|
* @param string $id
|
|
* The name of the object being created. If not supplied, then the id will be inferred from the
|
|
* object being created
|
|
* @param string $type
|
|
* Whether to create as a singleton or prototype object. Allows code to be explicit as to how it
|
|
* wants the object to be returned
|
|
*/
|
|
protected function instantiate($spec, $id=null, $type = null) {
|
|
if (is_string($spec)) {
|
|
$spec = array('class' => $spec);
|
|
}
|
|
$class = $spec['class'];
|
|
|
|
// create the object, using any constructor bindings
|
|
$constructorParams = array();
|
|
if (isset($spec['constructor']) && is_array($spec['constructor'])) {
|
|
$constructorParams = $spec['constructor'];
|
|
}
|
|
|
|
$factory = isset($spec['factory']) ? $this->get($spec['factory']) : $this->getObjectCreator();
|
|
$object = $factory->create($class, $constructorParams);
|
|
|
|
// figure out if we have a specific id set or not. In some cases, we might be instantiating objects
|
|
// that we don't manage directly; we don't want to store these in the service cache below
|
|
if (!$id) {
|
|
$id = isset($spec['id']) ? $spec['id'] : null;
|
|
}
|
|
|
|
// now set the service in place if needbe. This is NOT done for prototype beans, as they're
|
|
// created anew each time
|
|
if (!$type) {
|
|
$type = isset($spec['type']) ? $spec['type'] : null;
|
|
}
|
|
|
|
if ($id && (!$type || $type != 'prototype')) {
|
|
// this ABSOLUTELY must be set before the object is injected.
|
|
// This prevents circular reference errors down the line
|
|
$this->serviceCache[$id] = $object;
|
|
}
|
|
|
|
// now inject safely
|
|
$this->inject($object, $id);
|
|
|
|
return $object;
|
|
}
|
|
|
|
/**
|
|
* Inject $object with available objects from the service cache
|
|
*
|
|
* @todo Track all the existing objects that have had a service bound
|
|
* into them, so we can update that binding at a later point if needbe (ie
|
|
* if the managed service changes)
|
|
*
|
|
* @param object $object
|
|
* The object to inject
|
|
* @param string $asType
|
|
* The ID this item was loaded as. This is so that the property configuration
|
|
* for a type is referenced correctly in case $object is no longer the same
|
|
* type as the loaded config specification had it as.
|
|
*/
|
|
public function inject($object, $asType=null) {
|
|
$objtype = $asType ? $asType : get_class($object);
|
|
$mapping = isset($this->injectMap[$objtype]) ? $this->injectMap[$objtype] : null;
|
|
|
|
$spec = empty($this->specs[$objtype]) ? array() : $this->specs[$objtype];
|
|
|
|
// first off, set any properties defined in the service specification for this
|
|
// object type
|
|
if(!empty($spec['properties']) && is_array($spec['properties'])) {
|
|
foreach ($this->specs[$objtype]['properties'] as $key => $value) {
|
|
$val = $this->convertServiceProperty($value);
|
|
$this->setObjectProperty($object, $key, $val);
|
|
}
|
|
}
|
|
|
|
// Populate named methods
|
|
if (!empty($spec['calls']) && is_array($spec['calls'])) {
|
|
foreach ($spec['calls'] as $method) {
|
|
// Ignore any blank entries from the array; these may be left in due to config system limitations
|
|
if(!$method) continue;
|
|
|
|
// Format validation
|
|
if(!is_array($method) || !isset($method[0]) || isset($method[2])) {
|
|
throw new \InvalidArgumentException(
|
|
"'calls' entries in service definition should be 1 or 2 element arrays."
|
|
);
|
|
}
|
|
if(!is_string($method[0])) {
|
|
throw new \InvalidArgumentException("1st element of a 'calls' entry should be a string");
|
|
}
|
|
if(isset($method[1]) && !is_array($method[1])) {
|
|
throw new \InvalidArgumentException("2nd element of a 'calls' entry should an arguments array");
|
|
}
|
|
|
|
// Check that the method exists and is callable
|
|
$objectMethod = array($object, $method[0]);
|
|
if (!is_callable($objectMethod)) {
|
|
throw new \InvalidArgumentException("'$method[0]' in 'calls' entry is not a public method");
|
|
}
|
|
|
|
// Call it
|
|
call_user_func_array(
|
|
$objectMethod,
|
|
$this->convertServiceProperty(
|
|
isset($method[1]) ? $method[1] : array()
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
// now, use any cached information about what properties this object type has
|
|
// and set based on name resolution
|
|
if (!$mapping) {
|
|
if ($this->autoScanProperties) {
|
|
// we use an object to prevent array copies if/when passed around
|
|
$mapping = new ArrayObject();
|
|
|
|
// This performs public variable based injection
|
|
$robj = new ReflectionObject($object);
|
|
$properties = $robj->getProperties();
|
|
|
|
foreach ($properties as $propertyObject) {
|
|
/* @var $propertyObject ReflectionProperty */
|
|
if ($propertyObject->isPublic() && !$propertyObject->getValue($object)) {
|
|
$origName = $propertyObject->getName();
|
|
$name = ucfirst($origName);
|
|
if ($this->hasService($name)) {
|
|
// Pull the name out of the registry
|
|
$value = $this->get($name);
|
|
$propertyObject->setValue($object, $value);
|
|
$mapping[$origName] = array('name' => $name, 'type' => 'property');
|
|
}
|
|
}
|
|
}
|
|
|
|
// and this performs setter based injection
|
|
$methods = $robj->getMethods(ReflectionMethod::IS_PUBLIC);
|
|
|
|
foreach ($methods as $methodObj) {
|
|
/* @var $methodObj ReflectionMethod */
|
|
$methName = $methodObj->getName();
|
|
if (strpos($methName, 'set') === 0) {
|
|
$pname = substr($methName, 3);
|
|
if ($this->hasService($pname)) {
|
|
// Pull the name out of the registry
|
|
$value = $this->get($pname);
|
|
$methodObj->invoke($object, $value);
|
|
$mapping[$methName] = array('name' => $pname, 'type' => 'method');
|
|
}
|
|
}
|
|
}
|
|
|
|
// we store the information about what needs to be injected for objects of this
|
|
// type here
|
|
$this->injectMap[get_class($object)] = $mapping;
|
|
}
|
|
} else {
|
|
foreach ($mapping as $prop => $spec) {
|
|
if ($spec['type'] == 'property') {
|
|
$value = $this->get($spec['name']);
|
|
$object->$prop = $value;
|
|
} else {
|
|
$method = $prop;
|
|
$value = $this->get($spec['name']);
|
|
$object->$method($value);
|
|
}
|
|
}
|
|
}
|
|
|
|
$injections = Config::inst()->get(get_class($object), 'dependencies');
|
|
// If the type defines some injections, set them here
|
|
if ($injections && count($injections)) {
|
|
foreach ($injections as $property => $value) {
|
|
// we're checking empty in case it already has a property at this name
|
|
// this doesn't catch privately set things, but they will only be set by a setter method,
|
|
// which should be responsible for preventing further setting if it doesn't want it.
|
|
if (empty($object->$property)) {
|
|
$value = $this->convertServiceProperty($value);
|
|
$this->setObjectProperty($object, $property, $value);
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach ($this->autoProperties as $property => $value) {
|
|
if (!isset($object->$property)) {
|
|
$value = $this->convertServiceProperty($value);
|
|
$this->setObjectProperty($object, $property, $value);
|
|
}
|
|
}
|
|
|
|
// Call the 'injected' method if it exists
|
|
if (method_exists($object, 'injected')) {
|
|
$object->injected();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper to set a property's value
|
|
*
|
|
* @param object $object
|
|
* Set an object's property to a specific value
|
|
* @param string $name
|
|
* The name of the property to set
|
|
* @param mixed $value
|
|
* The value to set
|
|
*/
|
|
protected function setObjectProperty($object, $name, $value) {
|
|
if (method_exists($object, 'set'.$name)) {
|
|
$object->{'set'.$name}($value);
|
|
} else {
|
|
$object->$name = $value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Does the given service exist, and if so, what's the stored name for it?
|
|
*
|
|
* We do a special check here for services that are using compound names. For example,
|
|
* we might want to say that a property should be injected with Log.File or Log.Memory,
|
|
* but have only registered a 'Log' service, we'll instead return that.
|
|
*
|
|
* Will recursively call hasService for each depth of dotting
|
|
*
|
|
* @return string
|
|
* The name of the service (as it might be different from the one passed in)
|
|
*/
|
|
public function hasService($name) {
|
|
// common case, get it overwith first
|
|
if (isset($this->specs[$name])) {
|
|
return $name;
|
|
}
|
|
|
|
// okay, check whether we've got a compound name - don't worry about 0 index, cause that's an
|
|
// invalid name
|
|
if (!strpos($name, '.')) {
|
|
return null;
|
|
}
|
|
|
|
return $this->hasService(substr($name, 0, strrpos($name, '.')));
|
|
}
|
|
|
|
/**
|
|
* Register a service object with an optional name to register it as the
|
|
* service for
|
|
*
|
|
* @param stdClass $service
|
|
* The object to register
|
|
* @param string $replace
|
|
* The name of the object to replace (if different to the
|
|
* class name of the object to register)
|
|
*
|
|
*/
|
|
public function registerService($service, $replace = null) {
|
|
$registerAt = get_class($service);
|
|
if ($replace != null) {
|
|
$registerAt = $replace;
|
|
}
|
|
|
|
$this->specs[$registerAt] = array('class' => get_class($service));
|
|
$this->serviceCache[$registerAt] = $service;
|
|
$this->inject($service);
|
|
}
|
|
|
|
/**
|
|
* Register a service with an explicit name
|
|
*
|
|
* @deprecated since 4.0
|
|
*/
|
|
public function registerNamedService($name, $service) {
|
|
Deprecation::notice('4.0', 'registerNamedService is deprecated, use registerService instead');
|
|
return $this->registerService($service, $name);
|
|
}
|
|
|
|
/**
|
|
* Removes a named object from the cached list of objects managed
|
|
* by the inject
|
|
*
|
|
* @param string $name The name to unregister
|
|
*/
|
|
public function unregisterNamedObject($name) {
|
|
unset($this->serviceCache[$name]);
|
|
}
|
|
|
|
/**
|
|
* Clear out all objects that are managed by the injetor.
|
|
*/
|
|
public function unregisterAllObjects() {
|
|
$this->serviceCache = array('Injector' => $this);
|
|
}
|
|
|
|
/**
|
|
* Get a named managed object
|
|
*
|
|
* Will first check to see if the item has been registered as a configured service/bean
|
|
* and return that if so.
|
|
*
|
|
* Next, will check to see if there's any registered configuration for the given type
|
|
* and will then try and load that
|
|
*
|
|
* Failing all of that, will just return a new instance of the
|
|
* specificied object.
|
|
*
|
|
* @param string $name
|
|
* the name of the service to retrieve. If not a registered
|
|
* service, then a class of the given name is instantiated
|
|
* @param boolean $asSingleton
|
|
* Whether to register the created object as a singleton
|
|
* if no other configuration is found
|
|
* @param array $constructorArgs
|
|
* Optional set of arguments to pass as constructor arguments
|
|
* if this object is to be created from scratch
|
|
* (ie asSingleton = false)
|
|
* @return mixed the instance of the specified object
|
|
*/
|
|
public function get($name, $asSingleton = true, $constructorArgs = null) {
|
|
// reassign the name as it might actually be a compound name
|
|
if ($serviceName = $this->hasService($name)) {
|
|
// check to see what the type of bean is. If it's a prototype,
|
|
// we don't want to return the singleton version of it.
|
|
$spec = $this->specs[$serviceName];
|
|
$type = isset($spec['type']) ? $spec['type'] : null;
|
|
|
|
// if we're explicitly a prototype OR we're not wanting a singleton
|
|
if (($type && $type == 'prototype') || !$asSingleton) {
|
|
if ($spec && $constructorArgs) {
|
|
$spec['constructor'] = $constructorArgs;
|
|
} else {
|
|
// convert any _configured_ constructor args.
|
|
// we don't call this for get() calls where someone passes in
|
|
// constructor args, otherwise we end up calling convertServiceParams
|
|
// way too often
|
|
$this->updateSpecConstructor($spec);
|
|
}
|
|
return $this->instantiate($spec, $serviceName, !$type ? 'prototype' : $type);
|
|
} else {
|
|
if (!isset($this->serviceCache[$serviceName])) {
|
|
$this->updateSpecConstructor($spec);
|
|
$this->instantiate($spec, $serviceName);
|
|
}
|
|
return $this->serviceCache[$serviceName];
|
|
}
|
|
}
|
|
|
|
$config = $this->configLocator->locateConfigFor($name);
|
|
if ($config) {
|
|
$this->load(array($name => $config));
|
|
if (isset($this->specs[$name])) {
|
|
$spec = $this->specs[$name];
|
|
$this->updateSpecConstructor($spec);
|
|
if ($constructorArgs) {
|
|
$spec['constructor'] = $constructorArgs;
|
|
}
|
|
return $this->instantiate($spec, $name);
|
|
}
|
|
}
|
|
|
|
// If we've got this far, we're dealing with a case of a user wanting
|
|
// to create an object based on its name. So, we need to fake its config
|
|
// if the user wants it managed as a singleton service style object
|
|
$spec = array('class' => $name, 'constructor' => $constructorArgs);
|
|
if ($asSingleton) {
|
|
// need to load the spec in; it'll be given the singleton type by default
|
|
$this->load(array($name => $spec));
|
|
return $this->instantiate($spec, $name);
|
|
}
|
|
|
|
return $this->instantiate($spec);
|
|
}
|
|
|
|
/**
|
|
* Magic method to return an item directly
|
|
*
|
|
* @param string $name
|
|
* The named object to retrieve
|
|
* @return mixed
|
|
*/
|
|
public function __get($name) {
|
|
return $this->get($name);
|
|
}
|
|
|
|
/**
|
|
* Similar to get() but always returns a new object of the given type
|
|
*
|
|
* Additional parameters are passed through as
|
|
*
|
|
* @param string $name
|
|
* @return mixed A new instance of the specified object
|
|
*/
|
|
public function create($name) {
|
|
$constructorArgs = func_get_args();
|
|
array_shift($constructorArgs);
|
|
return $this->get($name, false, count($constructorArgs) ? $constructorArgs : null);
|
|
}
|
|
|
|
/**
|
|
* Creates an object with the supplied argument array
|
|
*
|
|
* @param string $name
|
|
* Name of the class to create an object of
|
|
* @param array $args
|
|
* Arguments to pass to the constructor
|
|
* @return mixed
|
|
*/
|
|
public function createWithArgs($name, $constructorArgs) {
|
|
return $this->get($name, false, $constructorArgs);
|
|
}
|
|
} |