SearchVariant
abstract class SearchVariant (View source)
A Search Variant handles decorators and other situations where the items to reindex or search through are modified from the default state - for instance, dealing with Versioned or Subsite
Traits
Provides extensions to this object to integrate it with standard config API methods.
Allows an object to have extensions applied to it.
Allows an object to declare a set of custom methods
Config options
| extensions | array | An array of extension names and parameters to be applied to this object upon construction. |
from Extensible |
| unextendable_classes | array | Classes that cannot be extended |
from Extensible |
| enabled | bool | Whether this variant is enabled |
Properties
| protected static | array | $extra_methods | Custom method sources |
from CustomMethods |
| protected | array | $extra_method_registers | Name of methods to invoke by defineMethods for this instance |
from CustomMethods |
| protected static | array | $built_in_methods | Non-custom methods |
from CustomMethods |
| protected | Extension[] | $extension_instances | from Extensible | |
| protected | callable[][] | $beforeExtendCallbacks | List of callbacks to call prior to extensions having extend called on them, each grouped by methodName. |
from Extensible |
| protected | callable[][] | $afterExtendCallbacks | List of callbacks to call after extensions having extend called on them, each grouped by methodName. |
from Extensible |
| protected static | $variants | Holds a cache of all variants |
||
| protected static | $class_variants | Holds a cache of the variants keyed by "class!" "1"? (1 = include subclasses) |
||
| protected static | $call_instances | Holds a cache of SearchVariant_Caller instances, one for each class/includeSubclasses setting |
Methods
Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).
Gets the uninherited value for the given config option
Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located
Adds any methods from Extension instances attached to this object.
Register an callback to invoke that defines extra methods
Return TRUE if a method exists on this object
Get meta-data details on a named method
Return the names of all the methods available on this object
Add all the methods from an object property (which is an Extension) to this object.
Add all the methods from an object property (which is an Extension) to this object.
Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)
Add callback as a method.
Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.
Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.
Adds any methods from Extension instances attached to this object.
Add an extension to a specific class.
No description
Get extra config sources for this class
Return TRUE if a class has a specified extension.
Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array
Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed
Get an extension instance attached to this object by name.
Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.
Get all extension instances for this specific object instance.
Return false if there is something missing from the environment (probably a not installed module) that means this variant can't apply to any class
Return true if this variant applies to the passed class & subclass
Returns an array of variants.
Lets you call any function on all variants that support it, in the same manner as "Object#extend" calls a method from extensions.
Similar to SearchVariant::with, except will only use variants that apply to at least one of the classes in the input array, where SearchVariant::with will run the query on the specific class you give it.
Get the current state of every variant
Return an iterator that, when used in a for loop, activates one combination of reindex states per loop, and restores back to the original state at the end
Add new filter field to index safely.
Merge sets of (or individual) class names together for a search index field.
Details
static Config_ForClass
config()
Get a configuration accessor for this class. Short hand for Config::inst()->get($this->class, .....).
mixed
stat(string $name)
deprecated
deprecated
Get inherited config value
mixed
uninherited(string $name)
Gets the uninherited value for the given config option
$this
set_stat(string $name, mixed $value)
deprecated
deprecated
Update the config value for a given property
mixed
__call(string $method, array $arguments)
Attempts to locate and call a method dynamically added to a class at runtime if a default cannot be located
You can add extra methods to a class using Extensions}, {@link Object::createMethod() or Object::addWrapperMethod()
protected
defineMethods()
Adds any methods from Extension instances attached to this object.
All these methods can then be called directly on the instance (transparently mapped through __call()}), or called explicitly through {@link extend().
protected
registerExtraMethodCallback(string $name, callable $callback)
Register an callback to invoke that defines extra methods
bool
hasMethod(string $method)
Return TRUE if a method exists on this object
This should be used rather than PHP's inbuild method_exists() as it takes into account methods added via extensions
protected array
getExtraMethodConfig(string $method)
Get meta-data details on a named method
array
allMethodNames(bool $custom = false)
Return the names of all the methods available on this object
protected array
findMethodsFromExtension(object $extension)
deprecated
deprecated
No description
protected
addMethodsFrom(string $property, string|int $index = null)
Add all the methods from an object property (which is an Extension) to this object.
protected
removeMethodsFrom(string $property, string|int $index = null)
Add all the methods from an object property (which is an Extension) to this object.
protected
addWrapperMethod(string $method, string $wrap)
Add a wrapper method - a method which points to another method with a different name. For example, Thumbnail(x) can be wrapped to generateThumbnail(x)
protected
addCallbackMethod(string $method, callable $callback)
Add callback as a method.
protected
beforeExtending(string $method, callable $callback)
Allows user code to hook into Object::extend prior to control being delegated to extensions. Each callback will be reset once called.
protected
afterExtending(string $method, callable $callback)
Allows user code to hook into Object::extend after control being delegated to extensions. Each callback will be reset once called.
protected
constructExtensions()
deprecated
deprecated
No description
protected
defineExtensionMethods()
Adds any methods from Extension instances attached to this object.
All these methods can then be called directly on the instance (transparently mapped through __call()}), or called explicitly through {@link extend().
static bool
add_extension(string $classOrExtension, string $extension = null)
Add an extension to a specific class.
The preferred method for adding extensions is through YAML config, since it avoids autoloading the class, and is easier to override in more specific configurations.
As an alternative, extensions can be added to a specific class directly in the Object::$extensions array. See SiteTree::$extensions for examples. Keep in mind that the extension will only be applied to new instances, not existing ones (including all instances created through singleton()).
static
remove_extension(string $extension)
Remove an extension from a class.
Note: This will not remove extensions from parent classes, and must be called directly on the class assigned the extension.
Keep in mind that this won't revert any datamodel additions of the extension at runtime, unless its used before the schema building kicks in (in your _config.php). Doesn't remove the extension from any Object instances which are already created, but will have an effect on new extensions. Clears any previously created singletons through singleton() to avoid side-effects from stale extension information.
static array
get_extensions(string $class = null, bool $includeArgumentString = false)
No description
static array|null
get_extra_config_sources(string $class = null)
Get extra config sources for this class
static bool
has_extension(string $classOrExtension, string $requiredExtension = null, bool $strict = false)
Return TRUE if a class has a specified extension.
This supports backwards-compatible format (static Object::has_extension($requiredExtension)) and new format ($object->has_extension($class, $requiredExtension))
array
invokeWithExtensions(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)
Calls a method if available on both this object and all applied Extensions, and then attempts to merge all results into an array
array
extend(string $method, mixed $a1 = null, mixed $a2 = null, mixed $a3 = null, mixed $a4 = null, mixed $a5 = null, mixed $a6 = null, mixed $a7 = null)
Run the given function on all of this object's extensions. Note that this method originally returned void, so if you wanted to return results, you're hosed
Currently returns an array, with an index resulting every time the function is called. Only adds returns if they're not NULL, to avoid bogus results from methods just defined on the parent extension. This is important for permission-checks through extend, as they use min() to determine if any of the returns is FALSE. As min() doesn't do type checking, an included NULL return would fail the permission checks.
The extension methods are defined during __construct()} in {@link defineMethods().
Extension|null
getExtensionInstance(string $extension)
Get an extension instance attached to this object by name.
bool
hasExtension(string $extension)
Returns TRUE if this object instance has a specific extension applied in $extension_instances. Extension instances are initialized at constructor time, meaning if you use add_extension() afterwards, the added extension will just be added to new instances of the extended class. Use the static method has_extension() to check if a class (not an instance) has a specific extension.
Caution: Don't use singleton(
Extension[]
getExtensionInstances()
Get all extension instances for this specific object instance.
See get_extensions() to get all applied extension classes for this class (not the instance).
This method also provides lazy-population of the extension_instances property.
__construct()
No description
appliesToEnvironment()
Return false if there is something missing from the environment (probably a not installed module) that means this variant can't apply to any class
abstract
appliesTo($class, $includeSubclasses)
Return true if this variant applies to the passed class & subclass
abstract
currentState()
Return the current state
abstract
reindexStates()
Return all states to step through to reindex all items
abstract
activateState($state)
Activate the passed state
abstract
alterQuery(SearchQuery $query, SearchIndex $index)
Apply this variant to a search query
static array
variants(string $class = null, bool $includeSubclasses = true)
Returns an array of variants.
With no arguments, returns all variants
With a classname as the first argument, returns the variants that apply to that class (optionally including subclasses)
static
clear_variant_cache()
Clear the cached variants
static SearchVariant_Caller
with(string $class = null, bool $includeSubclasses = true)
Lets you call any function on all variants that support it, in the same manner as "Object#extend" calls a method from extensions.
Usage: SearchVariant::with(...)->call($method, $arg1, ...);
static SearchVariant_Caller
withCommon(array $classes = [])
Similar to SearchVariant::with, except will only use variants that apply to at least one of the classes in the input array, where SearchVariant::with will run the query on the specific class you give it.
static
call($method, ...$args)
A shortcut to with when calling without passing in a class,
SearchVariant::call(...) ==== SearchVariant::with()->call(...);
static array
current_state($class = null, $includeSubclasses = true)
Get the current state of every variant
static void
activate_state(array $state)
Activate all the states in the passed argument
static SearchVariant_ReindexStateIteratorRet
reindex_states(string $class = null, bool $includeSubclasses = true)
Return an iterator that, when used in a for loop, activates one combination of reindex states per loop, and restores back to the original state at the end
protected
addFilterField(SearchIndex $index, string $name, array $field)
Add new filter field to index safely.
This method will respect existing filters with the same field name that correspond to multiple classes
protected array|string
mergeClasses(array|string $left, array|string $right)
Merge sets of (or individual) class names together for a search index field.
If there is only one unique class name, then just return it as a string instead of array.