563 lines
14 KiB
PHP
563 lines
14 KiB
PHP
<?php
|
|
/**
|
|
* A list object that wraps around an array of objects or arrays.
|
|
*
|
|
* @package framework
|
|
* @subpackage model
|
|
*/
|
|
class ArrayList extends ViewableData implements SS_List, SS_Filterable, SS_Sortable, SS_Limitable {
|
|
|
|
/**
|
|
* Holds the items in the list
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $items;
|
|
|
|
/**
|
|
*
|
|
* @param array $items - an initial array to fill this object with
|
|
*/
|
|
public function __construct(array $items = array()) {
|
|
$this->items = $items;
|
|
parent::__construct();
|
|
}
|
|
|
|
/**
|
|
* Return the class of items in this list, by looking at the first item inside it.
|
|
*/
|
|
public function dataClass() {
|
|
if(count($this->items) > 0) return get_class($this->items[0]);
|
|
}
|
|
|
|
/**
|
|
* Return the number of items in this list
|
|
*
|
|
* @return int
|
|
*/
|
|
public function count() {
|
|
return count($this->items);
|
|
}
|
|
|
|
/**
|
|
* Returns true if this list has items
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function exists() {
|
|
return (bool) count($this);
|
|
}
|
|
|
|
/**
|
|
* Returns an Iterator for this ArrayList.
|
|
* This function allows you to use ArrayList in foreach loops
|
|
*
|
|
* @return ArrayIterator
|
|
*/
|
|
public function getIterator() {
|
|
return new ArrayIterator($this->items);
|
|
}
|
|
|
|
/**
|
|
* Return an array of the actual items that this ArrayList contains.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function toArray() {
|
|
return $this->items;
|
|
}
|
|
|
|
public function debug() {
|
|
$val = "<h2>" . $this->class . "</h2><ul>";
|
|
foreach($this->toNestedArray() as $item) {
|
|
$val .= "<li style=\"list-style-type: disc; margin-left: 20px\">" . Debug::text($item) . "</li>";
|
|
}
|
|
$val .= "</ul>";
|
|
return $val;
|
|
}
|
|
|
|
/**
|
|
* Return this list as an array and every object it as an sub array as well
|
|
*
|
|
* @return array
|
|
*/
|
|
public function toNestedArray() {
|
|
$result = array();
|
|
|
|
foreach ($this->items as $item) {
|
|
if (is_object($item)) {
|
|
if (method_exists($item, 'toMap')) {
|
|
$result[] = $item->toMap();
|
|
} else {
|
|
$result[] = (array) $item;
|
|
}
|
|
} else {
|
|
$result[] = $item;
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get a sub-range of this dataobjectset as an array
|
|
*
|
|
* @param int $offset
|
|
* @param int $length
|
|
* @return ArrayList
|
|
*/
|
|
public function getRange($offset, $length) {
|
|
Deprecation::notice("3.0", 'getRange($offset, $length) is deprecated. Use limit($length, $offset) instead.'
|
|
. ' Note the new argument order.');
|
|
return $this->limit($length, $offset);
|
|
}
|
|
|
|
/**
|
|
* Get a sub-range of this dataobjectset as an array
|
|
*
|
|
* @param int $offset
|
|
* @param int $length
|
|
* @return ArrayList
|
|
*/
|
|
public function limit($length, $offset = 0) {
|
|
return new ArrayList(array_slice($this->items, $offset, $length));
|
|
}
|
|
|
|
/**
|
|
* Add this $item into this list
|
|
*
|
|
* @param mixed $item
|
|
*/
|
|
public function add($item) {
|
|
$this->push($item);
|
|
}
|
|
|
|
/**
|
|
* Remove this item from this list
|
|
*
|
|
* @param mixed $item
|
|
*/
|
|
public function remove($item) {
|
|
foreach ($this->items as $key => $value) {
|
|
if ($item === $value) unset($this->items[$key]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Replaces an item in this list with another item.
|
|
*
|
|
* @param array|object $item
|
|
* @param array|object $with
|
|
* @return void;
|
|
*/
|
|
public function replace($item, $with) {
|
|
foreach ($this->items as $key => $candidate) {
|
|
if ($candidate === $item) {
|
|
$this->items[$key] = $with;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Merges with another array or list by pushing all the items in it onto the
|
|
* end of this list.
|
|
*
|
|
* @param array|object $with
|
|
*/
|
|
public function merge($with) {
|
|
foreach ($with as $item) $this->push($item);
|
|
}
|
|
|
|
/**
|
|
* Removes items from this list which have a duplicate value for a certain
|
|
* field. This is especially useful when combining lists.
|
|
*
|
|
* @param string $field
|
|
*/
|
|
public function removeDuplicates($field = 'ID') {
|
|
$seen = array();
|
|
|
|
foreach ($this->items as $key => $item) {
|
|
$value = $this->extractValue($item, $field);
|
|
|
|
if (array_key_exists($value, $seen)) {
|
|
unset($this->items[$key]);
|
|
}
|
|
|
|
$seen[$value] = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pushes an item onto the end of this list.
|
|
*
|
|
* @param array|object $item
|
|
*/
|
|
public function push($item) {
|
|
$this->items[] = $item;
|
|
}
|
|
|
|
/**
|
|
* Pops the last element off the end of the list and returns it.
|
|
*
|
|
* @return array|object
|
|
*/
|
|
public function pop() {
|
|
return array_pop($this->items);
|
|
}
|
|
|
|
/**
|
|
* Add an item onto the beginning of the list.
|
|
*
|
|
* @param array|object $item
|
|
*/
|
|
public function unshift($item) {
|
|
array_unshift($this->items, $item);
|
|
}
|
|
|
|
/**
|
|
* Shifts the item off the beginning of the list and returns it.
|
|
*
|
|
* @return array|object
|
|
*/
|
|
public function shift() {
|
|
return array_shift($this->items);
|
|
}
|
|
|
|
/**
|
|
* Returns the first item in the list
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function first() {
|
|
return reset($this->items);
|
|
}
|
|
|
|
/**
|
|
* Returns the last item in the list
|
|
*
|
|
* @return mixed
|
|
*/
|
|
public function last() {
|
|
return end($this->items);
|
|
}
|
|
|
|
/**
|
|
* Returns a map of this list
|
|
*
|
|
* @param type $keyfield - the 'key' field of the result array
|
|
* @param type $titlefield - the value field of the result array
|
|
* @return array
|
|
*/
|
|
public function map($keyfield = 'ID', $titlefield = 'Title') {
|
|
$map = array();
|
|
foreach ($this->items as $item) {
|
|
$map[$this->extractValue($item, $keyfield)] = $this->extractValue($item, $titlefield);
|
|
}
|
|
return $map;
|
|
}
|
|
|
|
/**
|
|
* Find the first item of this list where the given key = value
|
|
*
|
|
* @param type $key
|
|
* @param type $value
|
|
* @return type
|
|
*/
|
|
public function find($key, $value) {
|
|
foreach ($this->items as $item) {
|
|
if ($this->extractValue($item, $key) == $value) return $item;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of a single field value for all items in the list.
|
|
*
|
|
* @param string $colName
|
|
* @return array
|
|
*/
|
|
public function column($colName = 'ID') {
|
|
$result = array();
|
|
foreach ($this->items as $item) {
|
|
$result[] = $this->extractValue($item, $colName);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* You can always sort a ArrayList
|
|
*
|
|
* @param string $by
|
|
* @return bool
|
|
*/
|
|
public function canSortBy($by) {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Reverses an {@link ArrayList}
|
|
*
|
|
* @return ArrayList
|
|
*/
|
|
public function reverse() {
|
|
// TODO 3.1: This currently mutates existing array
|
|
$list = /* clone */ $this;
|
|
$list->items = array_reverse($this->items);
|
|
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Sorts this list by one or more fields. You can either pass in a single
|
|
* field name and direction, or a map of field names to sort directions.
|
|
*
|
|
* @return DataList
|
|
* @see SS_List::sort()
|
|
* @example $list->sort('Name'); // default ASC sorting
|
|
* @example $list->sort('Name DESC'); // DESC sorting
|
|
* @example $list->sort('Name', 'ASC');
|
|
* @example $list->sort(array('Name'=>'ASC,'Age'=>'DESC'));
|
|
*/
|
|
public function sort() {
|
|
$args = func_get_args();
|
|
|
|
if(count($args)==0){
|
|
return $this;
|
|
}
|
|
if(count($args)>2){
|
|
throw new InvalidArgumentException('This method takes zero, one or two arguments');
|
|
}
|
|
|
|
// One argument and it's a string
|
|
if(count($args)==1 && is_string($args[0])){
|
|
$column = $args[0];
|
|
if(strpos($column, ' ') !== false) {
|
|
throw new InvalidArgumentException("You can't pass SQL fragments to sort()");
|
|
}
|
|
$columnsToSort[$column] = SORT_ASC;
|
|
|
|
} else if(count($args)==2){
|
|
$columnsToSort[$args[0]]=(strtolower($args[1])=='desc')?SORT_DESC:SORT_ASC;
|
|
|
|
} else if(is_array($args[0])) {
|
|
foreach($args[0] as $column => $sort_order){
|
|
$columnsToSort[$column] = (strtolower($sort_order)=='desc')?SORT_DESC:SORT_ASC;
|
|
}
|
|
} else {
|
|
throw new InvalidArgumentException("Bad arguments passed to sort()");
|
|
}
|
|
|
|
// This the main sorting algorithm that supports infinite sorting params
|
|
$multisortArgs = array();
|
|
$values = array();
|
|
foreach($columnsToSort as $column => $direction ) {
|
|
// The reason these are added to columns is of the references, otherwise when the foreach
|
|
// is done, all $values and $direction look the same
|
|
$values[$column] = array();
|
|
$sortDirection[$column] = $direction;
|
|
// We need to subtract every value into a temporary array for sorting
|
|
foreach($this->items as $index => $item) {
|
|
$values[$column][] = $this->extractValue($item, $column);
|
|
}
|
|
// PHP 5.3 requires below arguments to be reference when using array_multisort together
|
|
// with call_user_func_array
|
|
// First argument is the 'value' array to be sorted
|
|
$multisortArgs[] = &$values[$column];
|
|
// First argument is the direction to be sorted,
|
|
$multisortArgs[] = &$sortDirection[$column];
|
|
}
|
|
|
|
// TODO 3.1: This currently mutates existing array
|
|
$list = /* clone */ $this;
|
|
// As the last argument we pass in a reference to the items that all the sorting will be applied upon
|
|
$multisortArgs[] = &$list->items;
|
|
call_user_func_array('array_multisort', $multisortArgs);
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the given column can be used to filter the records.
|
|
*
|
|
* It works by checking the fields available in the first record of the list.
|
|
*/
|
|
public function canFilterBy($by) {
|
|
return array_key_exists($by, $this->first());
|
|
}
|
|
|
|
/**
|
|
* Filter the list to include items with these charactaristics
|
|
*
|
|
* @return ArrayList
|
|
* @see SS_List::filter()
|
|
* @example $list->filter('Name', 'bob'); // only bob in the list
|
|
* @example $list->filter('Name', array('aziz', 'bob'); // aziz and bob in list
|
|
* @example $list->filter(array('Name'=>'bob, 'Age'=>21)); // bob with the Age 21 in list
|
|
* @example $list->filter(array('Name'=>'bob, 'Age'=>array(21, 43))); // bob with the Age 21 or 43
|
|
* @example $list->filter(array('Name'=>array('aziz','bob'), 'Age'=>array(21, 43)));
|
|
* // aziz with the age 21 or 43 and bob with the Age 21 or 43
|
|
*/
|
|
public function filter() {
|
|
if(count(func_get_args())>2){
|
|
throw new InvalidArgumentException('filter takes one array or two arguments');
|
|
}
|
|
|
|
if(count(func_get_args()) == 1 && !is_array(func_get_arg(0))){
|
|
throw new InvalidArgumentException('filter takes one array or two arguments');
|
|
}
|
|
|
|
$keepUs = array();
|
|
if(count(func_get_args())==2){
|
|
$keepUs[func_get_arg(0)] = func_get_arg(1);
|
|
}
|
|
|
|
if(count(func_get_args())==1 && is_array(func_get_arg(0))){
|
|
foreach(func_get_arg(0) as $column => $value) {
|
|
$keepUs[$column] = $value;
|
|
}
|
|
}
|
|
|
|
$itemsToKeep = array();
|
|
foreach($this->items as $item){
|
|
$keepItem = true;
|
|
foreach($keepUs as $column => $value ) {
|
|
if(is_array($value) && !in_array($this->extractValue($item, $column), $value)) {
|
|
$keepItem = false;
|
|
} elseif(!is_array($value) && $this->extractValue($item, $column) != $value) {
|
|
$keepItem = false;
|
|
}
|
|
}
|
|
if($keepItem) {
|
|
$itemsToKeep[] = $item;
|
|
}
|
|
}
|
|
|
|
// TODO 3.1: This currently mutates existing array
|
|
$list = /* clone */ $this;
|
|
$list->items = $itemsToKeep;
|
|
return $list;
|
|
}
|
|
|
|
public function byID($id) {
|
|
return $this->filter("ID", $id)->First();
|
|
}
|
|
|
|
/**
|
|
* Exclude the list to not contain items with these charactaristics
|
|
*
|
|
* @return ArrayList
|
|
* @see SS_List::exclude()
|
|
* @example $list->exclude('Name', 'bob'); // exclude bob from list
|
|
* @example $list->exclude('Name', array('aziz', 'bob'); // exclude aziz and bob from list
|
|
* @example $list->exclude(array('Name'=>'bob, 'Age'=>21)); // exclude bob that has Age 21
|
|
* @example $list->exclude(array('Name'=>'bob, 'Age'=>array(21, 43))); // exclude bob with Age 21 or 43
|
|
* @example $list->exclude(array('Name'=>array('bob','phil'), 'Age'=>array(21, 43)));
|
|
* // bob age 21 or 43, phil age 21 or 43 would be excluded
|
|
*/
|
|
public function exclude() {
|
|
if(count(func_get_args())>2){
|
|
throw new InvalidArgumentException('exclude() takes one array or two arguments');
|
|
}
|
|
|
|
if(count(func_get_args()) == 1 && !is_array(func_get_arg(0))){
|
|
throw new InvalidArgumentException('exclude() takes one array or two arguments');
|
|
}
|
|
|
|
$removeUs = array();
|
|
if(count(func_get_args())==2){
|
|
$removeUs[func_get_arg(0)] = func_get_arg(1);
|
|
}
|
|
|
|
if(count(func_get_args())==1 && is_array(func_get_arg(0))){
|
|
foreach(func_get_arg(0) as $column => $excludeValue) {
|
|
$removeUs[$column] = $excludeValue;
|
|
}
|
|
}
|
|
|
|
$itemsToKeep = array();
|
|
|
|
$hitsRequiredToRemove = count($removeUs);
|
|
$matches = array();
|
|
foreach($removeUs as $column => $excludeValue) {
|
|
foreach($this->items as $key => $item){
|
|
if(!is_array($excludeValue) && $this->extractValue($item, $column) == $excludeValue) {
|
|
$matches[$key]=isset($matches[$key])?$matches[$key]+1:1;
|
|
} elseif(is_array($excludeValue) && in_array($this->extractValue($item, $column), $excludeValue)) {
|
|
$matches[$key]=isset($matches[$key])?$matches[$key]+1:1;
|
|
}
|
|
}
|
|
}
|
|
|
|
$keysToRemove = array_keys($matches,$hitsRequiredToRemove);
|
|
// TODO 3.1: This currently mutates existing array
|
|
$list = /* clone */ $this;
|
|
|
|
foreach($keysToRemove as $itemToRemoveIdx){
|
|
$list->remove($this->items[$itemToRemoveIdx]);
|
|
}
|
|
|
|
return $list;
|
|
}
|
|
|
|
protected function shouldExclude($item, $args) {
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns whether an item with $key exists
|
|
*
|
|
* @param mixed $key
|
|
* @return bool
|
|
*/
|
|
public function offsetExists($offset) {
|
|
return array_key_exists($offset, $this->items);
|
|
}
|
|
|
|
/**
|
|
* Returns item stored in list with index $key
|
|
*
|
|
* @param mixed $key
|
|
* @return DataObject
|
|
*/
|
|
public function offsetGet($offset) {
|
|
if ($this->offsetExists($offset)) return $this->items[$offset];
|
|
}
|
|
|
|
/**
|
|
* Set an item with the key in $key
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $value
|
|
*/
|
|
public function offsetSet($offset, $value) {
|
|
$this->items[$offset] = $value;
|
|
}
|
|
|
|
/**
|
|
* Unset an item with the key in $key
|
|
*
|
|
* @param mixed $key
|
|
*/
|
|
public function offsetUnset($offset) {
|
|
unset($this->items[$offset]);
|
|
}
|
|
|
|
/**
|
|
* Extracts a value from an item in the list, where the item is either an
|
|
* object or array.
|
|
*
|
|
* @param array|object $item
|
|
* @param string $key
|
|
* @return mixed
|
|
*/
|
|
protected function extractValue($item, $key) {
|
|
if (is_object($item)) {
|
|
return $item->$key;
|
|
} else {
|
|
if (array_key_exists($key, $item)) return $item[$key];
|
|
}
|
|
}
|
|
|
|
}
|