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Package hive-foundation
Short Description Hive Container Components Foundation
License MIT
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Informations about the package hive-foundation
hive-foundation
Hive Foundation is Container Components Foundation the delivers feature-rich hierarchical Key-Value node-based containers with an omni-present query interface.
General Status:
Integrity and Usage:
Dependencies
- psr/container
- subcosm/observatory
- PHP 7.1 or higher.
Optionally:
ext/splif do want to useSplFileObject's for loaders.
What is a hive node?
A hive node implements one leaf of a hierarchy where you may set values to the node itself, child nodes or the root node with simple commands.
How do i...
The following examples explain how hive nodes in general do work.
... create a root node?
Root nodes are the top-level node of any node hierarchy, there can be only one root node but as many child nodes as you need. Root nodes are created like this:
... append child nodes?
Hive nodes are self-extending, you may create nodes by yourself by
calling HiveNode::node($nodeName, true).
... append values to a node?
Like this:
... append lazy loading for values?
Hive nodes do see closures as lazy-load values, just wrap what you want to be lazy loaded into a closure.
... get a value from a node?
Like this:
... set or get values hierarchically?
Hive nodes implement a hierarchy-safe query mechanism to get and store values into the hierarchy.
In the first set instruction, the key router of the root node will
receive the closure. The second set instruction will (automatically)
create the node 'router' (not value-key), and the key factory at
the router-node who will receive the closure.
You can also access the root node from sub nodes:
Is there any hook or event mechanism?
Yes and no. You can not manipulate values from outside the hive
structure using events, but you can observe a hive node and issue
events in your event dispatcher of your choice using the Observatory-
Implementation of each hive node.
The available observer stages can be found at the
HiveInterface and DeclarationAwareInterface represented by
*_STAGE constants.
Observatory-Observers are shared across the entire hive structure and
can be altered to own observer queues from each parent independently.
Can i assign nodes manually?
No. Whenever you assign items to a container they will remain items as
they were set (a closure is the only exception here). You have to use
HiveNode::node($name, true) to create new child-nodes, or you just
let the hive node create them for you. The inability to set nodes
manually was decided because of avoiding conflicts of query divider
and root definition tokens across node structures. Integrity first.
Whats about value validation?
The HiveNode itself does not provided an interface to validate values.
DeclarativeHiveNode provides an interface to declare a validator on a
per item level or a default validator for all items and sub nodes.
The provided callback receives the value to set as the first parameter and requires to return the value to be set to the hive node, otherwise the value will default to null.
Import data to nodes with loaders
Package Stability and Maintainers
This package is considered stable. The maintainers of this package are:
License
This package is licensed under the MIT-License.
