primo commit
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573
libraries/vendor/joomla/data/src/DataSet.php
vendored
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573
libraries/vendor/joomla/data/src/DataSet.php
vendored
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<?php
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/**
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* Part of the Joomla Framework Data Package
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*
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* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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namespace Joomla\Data;
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/**
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* DataSet is a collection class that allows the developer to operate on a set of DataObjects as if they were in a typical PHP array.
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*
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* @since 1.0
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*/
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class DataSet implements DumpableInterface, \ArrayAccess, \Countable, \Iterator
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{
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/**
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* The current position of the iterator.
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*
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* @var integer
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* @since 1.0
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*/
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private $current = false;
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/**
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* The iterator objects.
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*
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* @var DataObject[]
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* @since 1.0
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*/
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private $objects = [];
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/**
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* The class constructor.
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*
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* @param DataObject[] $objects An array of DataObject objects to bind to the data set.
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*
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* @since 1.0
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* @throws \InvalidArgumentException if an object is not a DataObject.
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*/
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public function __construct(array $objects = [])
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{
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// Set the objects.
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$this->initialise($objects);
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}
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/**
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* The magic call method is used to call object methods using the iterator.
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*
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* Example: $array = $objectList->foo('bar');
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*
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* The object list will iterate over its objects and see if each object has a callable 'foo' method.
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* If so, it will pass the argument list and assemble any return values. If an object does not have
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* a callable method no return value is recorded.
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* The keys of the objects and the result array are maintained.
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*
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* @param string $method The name of the method called.
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* @param array $arguments The arguments of the method called.
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*
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* @return array An array of values returned by the methods called on the objects in the data set.
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*
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* @since 1.0
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*/
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public function __call($method, $arguments = [])
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{
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$return = [];
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// Iterate through the objects.
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foreach ($this->objects as $key => $object) {
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// Create the object callback.
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$callback = [$object, $method];
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// Check if the callback is callable.
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if (\is_callable($callback)) {
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// Call the method for the object.
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$return[$key] = \call_user_func_array($callback, $arguments);
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}
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}
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return $return;
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}
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/**
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* The magic get method is used to get a list of properties from the objects in the data set.
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*
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* Example: $array = $dataSet->foo;
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*
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* This will return a column of the values of the 'foo' property in all the objects
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* (or values determined by custom property setters in the individual DataObject's).
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* The result array will contain an entry for each object in the list (compared to __call which may not).
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* The keys of the objects and the result array are maintained.
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*
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* @param string $property The name of the data property.
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*
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* @return array An associative array of the values.
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*
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* @since 1.0
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*/
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public function __get($property)
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{
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$return = [];
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// Iterate through the objects.
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foreach ($this->objects as $key => $object) {
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// Get the property.
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$return[$key] = $object->$property;
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}
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return $return;
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}
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/**
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* The magic isset method is used to check the state of an object property using the iterator.
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*
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* Example: $array = isset($objectList->foo);
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*
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* @param string $property The name of the property.
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*
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* @return boolean True if the property is set in any of the objects in the data set.
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*
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* @since 1.0
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*/
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public function __isset($property)
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{
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$return = [];
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// Iterate through the objects.
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foreach ($this->objects as $object) {
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// Check the property.
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$return[] = isset($object->$property);
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}
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return \in_array(true, $return, true);
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}
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/**
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* The magic set method is used to set an object property using the iterator.
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*
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* Example: $objectList->foo = 'bar';
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*
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* This will set the 'foo' property to 'bar' in all of the objects
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* (or a value determined by custom property setters in the DataObject).
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*
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* @param string $property The name of the property.
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* @param mixed $value The value to give the data property.
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*
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* @return void
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*
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* @since 1.0
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*/
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public function __set($property, $value)
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{
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// Iterate through the objects.
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foreach ($this->objects as $object) {
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// Set the property.
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$object->$property = $value;
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}
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}
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/**
|
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* The magic unset method is used to unset an object property using the iterator.
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*
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* Example: unset($objectList->foo);
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*
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* This will unset all of the 'foo' properties in the list of DataObject's.
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*
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* @param string $property The name of the property.
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*
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* @return void
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*
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* @since 1.0
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*/
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public function __unset($property)
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{
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// Iterate through the objects.
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foreach ($this->objects as $object) {
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unset($object->$property);
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}
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}
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|
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/**
|
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* Gets an array of keys, existing in objects
|
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*
|
||||
* @param string $type Selection type 'all' or 'common'
|
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*
|
||||
* @return array Array of keys
|
||||
*
|
||||
* @since 1.2.0
|
||||
* @throws \InvalidArgumentException
|
||||
*/
|
||||
public function getObjectsKeys($type = 'all')
|
||||
{
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||||
$keys = null;
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||||
|
||||
if ($type == 'all') {
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||||
$function = 'array_merge';
|
||||
} elseif ($type == 'common') {
|
||||
$function = 'array_intersect_key';
|
||||
} else {
|
||||
throw new \InvalidArgumentException("Unknown selection type: $type");
|
||||
}
|
||||
|
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foreach ($this->objects as $object) {
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$objectVars = json_decode(json_encode($object), true);
|
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|
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$keys = ($keys === null) ? $objectVars : $function($keys, $objectVars);
|
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}
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return array_keys($keys);
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}
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|
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/**
|
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* Gets all objects as an array
|
||||
*
|
||||
* @param boolean $associative Option to set return mode: associative or numeric array.
|
||||
* @param string ...$keys Unlimited optional property names to extract from objects.
|
||||
*
|
||||
* @return array Returns an array according to defined options.
|
||||
*
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||||
* @since 1.2.0
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||||
*/
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||||
public function toArray($associative = true, ...$keys)
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||||
{
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||||
if (empty($keys)) {
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||||
$keys = $this->getObjectsKeys();
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||||
}
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||||
|
||||
$return = [];
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||||
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$i = 0;
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||||
|
||||
foreach ($this->objects as $key => $object) {
|
||||
$arrayItem = [];
|
||||
|
||||
$key = ($associative) ? $key : $i++;
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||||
|
||||
$j = 0;
|
||||
|
||||
foreach ($keys as $property) {
|
||||
$propertyKey = ($associative) ? $property : $j++;
|
||||
$arrayItem[$propertyKey] = $object->$property ?? null;
|
||||
}
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||||
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||||
$return[$key] = $arrayItem;
|
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}
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return $return;
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}
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||||
|
||||
/**
|
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* Gets the number of data objects in the set.
|
||||
*
|
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* @return integer The number of objects.
|
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*
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* @since 1.0
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*/
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||||
public function count()
|
||||
{
|
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return \count($this->objects);
|
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}
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/**
|
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* Clears the objects in the data set.
|
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*
|
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* @return DataSet Returns itself to allow chaining.
|
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*
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* @since 1.0
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*/
|
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public function clear()
|
||||
{
|
||||
$this->objects = [];
|
||||
$this->rewind();
|
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return $this;
|
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}
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|
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/**
|
||||
* Get the current data object in the set.
|
||||
*
|
||||
* @return DataObject|false The current object, or false if the array is empty or the pointer is beyond the end of the elements.
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function current()
|
||||
{
|
||||
return is_scalar($this->current) ? $this->objects[$this->current] : false;
|
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}
|
||||
|
||||
/**
|
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* Dumps the data object in the set, recursively if appropriate.
|
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*
|
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* @param integer $depth The maximum depth of recursion (default = 3).
|
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* For example, a depth of 0 will return a stdClass with all the properties in native
|
||||
* form. A depth of 1 will recurse into the first level of properties only.
|
||||
* @param ?\SplObjectStorage $dumped An array of already serialized objects that is used to avoid infinite loops.
|
||||
*
|
||||
* @return array An associative array of the data objects in the set, dumped as a simple PHP stdClass object.
|
||||
*
|
||||
* @see DataObject::dump()
|
||||
* @since 1.0
|
||||
*/
|
||||
public function dump($depth = 3, \SplObjectStorage $dumped = null)
|
||||
{
|
||||
// Check if we should initialise the recursion tracker.
|
||||
if ($dumped === null) {
|
||||
$dumped = new \SplObjectStorage();
|
||||
}
|
||||
|
||||
// Add this object to the dumped stack.
|
||||
$dumped->attach($this);
|
||||
|
||||
$objects = [];
|
||||
|
||||
// Make sure that we have not reached our maximum depth.
|
||||
if ($depth > 0) {
|
||||
// Handle JSON serialization recursively.
|
||||
foreach ($this->objects as $key => $object) {
|
||||
$objects[$key] = $object->dump($depth, $dumped);
|
||||
}
|
||||
}
|
||||
|
||||
return $objects;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the data set in a form that can be serialised to JSON format.
|
||||
*
|
||||
* Note that this method will not return an associative array, otherwise it would be encoded into an object.
|
||||
* JSON decoders do not consistently maintain the order of associative keys, whereas they do maintain the order of arrays.
|
||||
*
|
||||
* @return array
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function jsonSerialize()
|
||||
{
|
||||
$return = [];
|
||||
|
||||
// Iterate through the objects.
|
||||
foreach ($this->objects as $object) {
|
||||
// Call the method for the object.
|
||||
$return[] = $object;
|
||||
}
|
||||
|
||||
return $return;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the key of the current object in the iterator.
|
||||
*
|
||||
* @return integer|false The object key on success; false on failure.
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function key()
|
||||
{
|
||||
return $this->current;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the array of keys for all the objects in the iterator (emulates array_keys).
|
||||
*
|
||||
* @return array The array of keys
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function keys()
|
||||
{
|
||||
return array_keys($this->objects);
|
||||
}
|
||||
|
||||
/**
|
||||
* Applies a function to every object in the set (emulates array_walk).
|
||||
*
|
||||
* @param callable $funcname Callback function.
|
||||
*
|
||||
* @return boolean
|
||||
*
|
||||
* @since 1.2.0
|
||||
* @throws \InvalidArgumentException
|
||||
*/
|
||||
public function walk(callable $funcname)
|
||||
{
|
||||
foreach ($this->objects as $key => $object) {
|
||||
$funcname($object, $key);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Advances the iterator to the next object in the iterator.
|
||||
*
|
||||
* @return void
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function next()
|
||||
{
|
||||
// Get the object offsets.
|
||||
$keys = $this->keys();
|
||||
|
||||
// Check if _current has been set to false but offsetUnset.
|
||||
if ($this->current === false && isset($keys[0])) {
|
||||
// This is a special case where offsetUnset was used in a foreach loop and the first element was unset.
|
||||
$this->current = $keys[0];
|
||||
} else {
|
||||
// Get the current key.
|
||||
$position = array_search($this->current, $keys);
|
||||
|
||||
// Check if there is an object after the current object.
|
||||
if ($position !== false && isset($keys[$position + 1])) {
|
||||
// Get the next id.
|
||||
$this->current = $keys[$position + 1];
|
||||
} else {
|
||||
// That was the last object or the internal properties have become corrupted.
|
||||
$this->current = null;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks whether an offset exists in the iterator.
|
||||
*
|
||||
* @param mixed $offset The object offset.
|
||||
*
|
||||
* @return boolean
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function offsetExists($offset)
|
||||
{
|
||||
return isset($this->objects[$offset]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets an offset in the iterator.
|
||||
*
|
||||
* @param mixed $offset The object offset.
|
||||
*
|
||||
* @return DataObject|null
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function offsetGet($offset)
|
||||
{
|
||||
return $this->objects[$offset] ?? null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets an offset in the iterator.
|
||||
*
|
||||
* @param mixed $offset The object offset.
|
||||
* @param DataObject $object The object object.
|
||||
*
|
||||
* @return void
|
||||
*
|
||||
* @since 1.0
|
||||
* @throws \InvalidArgumentException if an object is not an instance of DataObject.
|
||||
*/
|
||||
public function offsetSet($offset, $object)
|
||||
{
|
||||
if (!($object instanceof DataObject)) {
|
||||
throw new \InvalidArgumentException(
|
||||
sprintf(
|
||||
'The $object argument must be an instance of "%s", a %s was given.',
|
||||
DataObject::class,
|
||||
\gettype($object) === 'object' ? \get_class($object) : \gettype($object)
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
// Set the offset.
|
||||
if ($offset === null) {
|
||||
$this->objects[] = $object;
|
||||
} else {
|
||||
$this->objects[$offset] = $object;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Unsets an offset in the iterator.
|
||||
*
|
||||
* @param mixed $offset The object offset.
|
||||
*
|
||||
* @return void
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function offsetUnset($offset)
|
||||
{
|
||||
if (!isset($this[$offset])) {
|
||||
// Do nothing if the offset does not exist.
|
||||
return;
|
||||
}
|
||||
|
||||
// Check for special handling of unsetting the current position.
|
||||
if ($offset == $this->current) {
|
||||
// Get the current position.
|
||||
$keys = $this->keys();
|
||||
$position = array_search($this->current, $keys);
|
||||
|
||||
// Check if there is an object before the current object.
|
||||
if ($position > 0) {
|
||||
// Move the current position back one.
|
||||
$this->current = $keys[$position - 1];
|
||||
} else {
|
||||
// We are at the start of the keys AND let's assume we are in a foreach loop and `next` is going to be called.
|
||||
$this->current = false;
|
||||
}
|
||||
}
|
||||
|
||||
unset($this->objects[$offset]);
|
||||
}
|
||||
|
||||
/**
|
||||
* Rewinds the iterator to the first object.
|
||||
*
|
||||
* @return void
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function rewind()
|
||||
{
|
||||
// Set the current position to the first object.
|
||||
if (empty($this->objects)) {
|
||||
$this->current = false;
|
||||
} else {
|
||||
$keys = $this->keys();
|
||||
$this->current = array_shift($keys);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Validates the iterator.
|
||||
*
|
||||
* @return boolean
|
||||
*
|
||||
* @since 1.0
|
||||
*/
|
||||
public function valid()
|
||||
{
|
||||
// Check the current position.
|
||||
if (!is_scalar($this->current) || !isset($this->objects[$this->current])) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialises the list with an array of objects.
|
||||
*
|
||||
* @param array $input An array of objects.
|
||||
*
|
||||
* @return void
|
||||
*
|
||||
* @since 1.0
|
||||
* @throws \InvalidArgumentException if an object is not a DataObject.
|
||||
*/
|
||||
private function initialise(array $input = [])
|
||||
{
|
||||
foreach ($input as $key => $object) {
|
||||
if ($object !== null) {
|
||||
$this[$key] = $object;
|
||||
}
|
||||
}
|
||||
|
||||
$this->rewind();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user