$hooks
$hooks :
Atomic graph entity, Node
A graph is made up of nodes (aka. nodes, or points) which are connected by edges (aka arcs, or lines) therefore node is the fundamental unit of which graphs are formed.
Nodes are indivisible, yet they share some common characteristics with edges. In Pho context, these commonalities are represented with the EntityInterface.
Uses Observer Pattern to observe updates from its attribute bags.
Last but not least, this class is declared \Serializable. While it does nothing special within this class, this declaration may be useful for subclasses to override and persist data.
$edge_list : \Pho\Lib\Graph\EdgeList
Internal variable that keeps track of edges in and out.
$context : \Pho\Lib\Graph\GraphInterface
The graph context of this node
hook(\Pho\Lib\Graph\string $method, \Closure $call)
{@inheritDoc}
| \Pho\Lib\Graph\string | $method | |
| \Closure | $call |
unhook(\Pho\Lib\Graph\string $method)
{@inheritDoc}
| \Pho\Lib\Graph\string | $method |
hooks()
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on(\Pho\Lib\Graph\Event\string $eventName, $callBack, \Pho\Lib\Graph\Event\int $priority = 100) : void
Subscribe to an event.
| \Pho\Lib\Graph\Event\string | $eventName | |
| $callBack | ||
| \Pho\Lib\Graph\Event\int | $priority |
emit(\Pho\Lib\Graph\Event\string $eventName, array $arguments = array())
Emits an event.
This method will return true if 0 or more listeners were succesfully handled. false is returned if one of the events broke the event chain.
Pho: Please note, continueCallback does not exist with Pho
If the continueCallBack is specified, this callback will be called every time before the next event handler is called.
If the continueCallback returns false, event propagation stops. This allows you to use the eventEmitter as a means for listeners to implement functionality in your application, and break the event loop as soon as some condition is fulfilled.
Note that returning false from an event subscriber breaks propagation and returns false, but if the continue-callback stops propagation, this is still considered a 'successful' operation and returns true.
Lastly, if there are 5 event handlers for an event. The continueCallback will be called at most 4 times.
| \Pho\Lib\Graph\Event\string | $eventName | |
| array | $arguments |
listeners(\Pho\Lib\Graph\Event\string $eventName, \Pho\Lib\Graph\Event\bool $flat = false) : array<mixed,callable>
Returns the list of listeners for an event.
The list is returned as an array, and the list of events are sorted by their priority.
| \Pho\Lib\Graph\Event\string | $eventName | |
| \Pho\Lib\Graph\Event\bool | $flat |
removeAllListeners(\Pho\Lib\Graph\Event\string $eventName = null) : void
Removes all listeners.
If the eventName argument is specified, all listeners for that event are removed. If it is not specified, every listener for every event is removed.
| \Pho\Lib\Graph\Event\string | $eventName |
__construct(\Pho\Lib\Graph\GraphInterface $context)
{@inheritdoc}
| \Pho\Lib\Graph\GraphInterface | $context |
context() : \Pho\Lib\Graph\ArrayObject
Returns the context that this node is a member of.
Contexts are GraphInterface objects that contain nodes.
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changeContext(\Pho\Lib\Graph\GraphInterface $context) : void
Changes the fundamental context of a node.
Rarely, a node may need its fundamental context to change after its construction. This method enables setting a new context for the node.
| \Pho\Lib\Graph\GraphInterface | $context |
edges() : \Pho\Lib\Graph\EdgeList
Gives access to this node's EdgeList property.
EdgeList contains all the edges in and out from this node. It is also used to add new edges.
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Converts the object to array
Used for serialization/unserialization. Converts internal object properties into a simple format to help with reconstruction.
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edge(\Pho\Lib\Graph\string $id) : \Pho\Lib\Graph\EdgeInterface
Retrieve Edge objects given its ID.
Used in serialization. This function must be implemented for a higher level package with persistence. Otherwise it has no use and no function within pho-lib-graph.
| \Pho\Lib\Graph\string | $id | The Edge ID in string format |
hookable()
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