mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-02 14:18:46 +02:00
ddcfcf7bed
Cleanup of framework's use of @package and @subpackage labels and additional of labels for classes missing packages. Moved all GridField related components to the one name. Countless spelling fixes, grammar for other comments. Link ClassName references in file headers.
442 lines
11 KiB
PHP
442 lines
11 KiB
PHP
<?php
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/**
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* An {@link ArrayList} that represents an unsaved relation.
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*
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* has_many and many_many relations cannot be saved until after the DataObject
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* they're on has been written. This List pretends to be a RelationList and
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* stores the related objects in memory.
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*
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* It can store both saved objects (as IDs) or unsaved objects (as instances
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* of $dataClass). Unsaved objects are then written when the list is saved
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* into an instance of {@link RelationList}.
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*
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* Most methods that alter the list of objects throw LogicExceptions.
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*
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* @package framework
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* @subpackage model
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*/
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class UnsavedRelationList extends ArrayList {
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/**
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* The DataObject class name that this relation is on
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*
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* @var string
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*/
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protected $baseClass;
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/**
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* The name of the relation
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*
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* @var string
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*/
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protected $relationName;
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/**
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* The DataObject class name that this relation is querying
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*
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* @var string
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*/
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protected $dataClass;
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/**
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* The extra fields associated with the relation
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*
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* @var array
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*/
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protected $extraFields = array();
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/**
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* Create a new UnsavedRelationList
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*
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* @param string $dataClass The DataObject class used in the relation
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*/
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public function __construct($baseClass, $relationName, $dataClass) {
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$this->baseClass = $baseClass;
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$this->relationName = $relationName;
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$this->dataClass = $dataClass;
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}
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/**
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* Add an item to this relationship
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*
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* @param $extraFields A map of additional columns to insert into the joinTable in the case of a many_many relation
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*/
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public function add($item, $extraFields = null) {
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$this->push($item, $extraFields);
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}
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/**
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* Save all the items in this list into the RelationList
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*
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* @param RelationList $list
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*/
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public function changeToList(RelationList $list) {
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foreach($this->items as $key => $item) {
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if(is_object($item)) {
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$item->write();
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}
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$list->add($item, $this->extraFields[$key]);
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}
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}
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/**
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* Pushes an item onto the end of this list.
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*
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* @param array|object $item
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*/
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public function push($item, $extraFields = null) {
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if((is_object($item) && !$item instanceof $this->dataClass)
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|| (!is_object($item) && !is_numeric($item))) {
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throw new InvalidArgumentException(
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"UnsavedRelationList::add() expecting a $this->dataClass object, or ID value",
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E_USER_ERROR);
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}
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if(is_object($item) && $item->ID) {
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$item = $item->ID;
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}
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$this->extraFields[] = $extraFields;
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parent::push($item);
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}
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/**
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* Get the dataClass name for this relation, ie the DataObject ClassName
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*
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* @return string
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*/
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public function dataClass() {
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return $this->dataClass;
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}
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/**
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* Returns an Iterator for this relation.
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*
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* @return ArrayIterator
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*/
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public function getIterator() {
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return new ArrayIterator($this->toArray());
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}
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/**
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* Return an array of the actual items that this relation contains at this stage.
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* This is when the query is actually executed.
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*
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* @return array
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*/
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public function toArray() {
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$items = array();
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foreach($this->items as $key => $item) {
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if(is_numeric($item)) {
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$item = DataObject::get_by_id($this->dataClass, $item);
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}
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if(!empty($this->extraFields[$key])) {
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$item->update($this->extraFields[$key]);
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}
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$items[] = $item;
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}
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return $items;
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}
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/**
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* Add a number of items to the relation.
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*
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* @param array $items Items to add, as either DataObjects or IDs.
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* @return DataList
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*/
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public function addMany($items) {
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foreach($items as $item) {
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$this->add($item);
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}
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return $this;
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}
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/**
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* Returns true if the given column can be used to filter the records.
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*/
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public function canFilterBy($by) {
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return false;
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}
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/**
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* Returns true if the given column can be used to sort the records.
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*/
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public function canSortBy($by) {
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return false;
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}
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/**
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* Remove all items from this relation.
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*/
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public function removeAll() {
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$this->items = array();
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$this->extraFields = array();
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}
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/**
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* Remove the items from this list with the given IDs
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*
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* @param array $idList
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*/
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public function removeMany($items) {
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$this->items = array_diff($this->items, $items);
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return $this;
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}
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/**
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* Removes items from this list which are equal.
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*
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* @param string $field unused
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*/
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public function removeDuplicates($field = 'ID') {
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$this->items = array_unique($this->items);
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}
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/**
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* Sets the Relation to be the given ID list.
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* Records will be added and deleted as appropriate.
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*
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* @param array $idList List of IDs.
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*/
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public function setByIDList($idList) {
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$this->removeAll();
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$this->addMany($idList);
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}
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/**
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* Returns an array with both the keys and values set to the IDs of the records in this list.
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*
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* Does not return the IDs for unsaved DataObjects
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*/
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public function getIDList() {
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// Get a list of IDs of our current items - if it's not a number then object then assume it's a DO.
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$ids = array_map(function($obj) {
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return is_numeric($obj) ? $obj : $obj->ID;
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}, $this->items);
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// Strip out duplicates and anything resolving to False.
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$ids = array_filter(array_unique($ids));
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// Change the array from (1, 2, 3) to (1 => 1, 2 => 2, 3 => 3)
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if ($ids) $ids = array_combine($ids, $ids);
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return $ids;
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}
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/**
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* Returns the first item in the list
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*
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* @return mixed
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*/
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public function first() {
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$item = reset($this->items);
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if(is_numeric($item)) {
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$item = DataObject::get_by_id($this->dataClass, $item);
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}
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if(!empty($this->extraFields[key($this->items)])) {
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$item->update($this->extraFields[key($this->items)]);
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}
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return $item;
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}
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/**
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* Returns the last item in the list
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*
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* @return mixed
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*/
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public function last() {
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$item = end($this->items);
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if(!empty($this->extraFields[key($this->items)])) {
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$item->update($this->extraFields[key($this->items)]);
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}
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return $item;
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}
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/**
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* Returns an array of a single field value for all items in the list.
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*
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* @param string $colName
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* @return array
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*/
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public function column($colName = 'ID') {
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$list = new ArrayList($this->toArray());
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return $list->column('ID');
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}
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/**
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* Returns a copy of this list with the relationship linked to the given foreign ID.
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* @param $id An ID or an array of IDs.
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*/
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public function forForeignID($id) {
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$class = singleton($this->baseClass);
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$class->ID = 1;
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return $class->{$this->relationName}()->forForeignID($id);
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}
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/**
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* Return the DBField object that represents the given field on the related class.
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*
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* @param string $fieldName Name of the field
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* @return DBField The field as a DBField object
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*/
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public function dbObject($fieldName) {
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return singleton($this->dataClass)->dbObject($fieldName);
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}
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/**#@+
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* Prevents calling DataList methods that rely on the objects being saved
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*/
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public function addFilter() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function alterDataQuery() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function avg() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function byIDs() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function byID($id) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function dataQuery() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function exclude() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function filter() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function getRange($offset, $length) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function getRelationName() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function innerJoin() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function insertFirst() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function join() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function leftJoin() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function limit($length, $offset = 0) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function map($keyField = 'ID', $titleField = 'Title') {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function max() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function merge($with) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function min() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function newObject() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function offsetExists($offset) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function offsetGet($offset) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function offsetSet($offset, $value) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function offsetUnset($offset) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function pop() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function relation() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function removeByFilter() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function removeByID() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function reverse() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function setDataModel() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function setDataQuery() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function setQueriedColumns() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function shift() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function sql() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function subtract() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function sum() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function unshift($item) {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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public function where() {
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throw new LogicException(__FUNCTION__ . " can't be called on an UnsavedRelationList.");
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}
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/**#@-*/
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}
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