mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-09-29 12:49:06 +02:00
API: Implement SS_Map::push() to append values.
FIX: SS_Map::count() not taking into account additional firstItems
This commit is contained in:
Will Rossiter
parent
bd5fdf1f19
commit
0e89c4b6cd
330
model/Map.php
330
model/Map.php
@ -7,12 +7,26 @@
|
||||
* @subpackage model
|
||||
*/
|
||||
class SS_Map implements ArrayAccess, Countable, IteratorAggregate {
|
||||
|
||||
protected $list, $keyField, $valueField;
|
||||
|
||||
/**
|
||||
* @see SS_Map::unshift()
|
||||
*
|
||||
* @var array $firstItems
|
||||
*/
|
||||
protected $firstItems = array();
|
||||
|
||||
/**
|
||||
* @see SS_Map::push()
|
||||
*
|
||||
* @var array $lastItems
|
||||
*/
|
||||
protected $lastItems = array();
|
||||
|
||||
/**
|
||||
* Construct a new map around an SS_list.
|
||||
*
|
||||
* @param $list The list to build a map from
|
||||
* @param $keyField The field to use as the key of each map entry
|
||||
* @param $valueField The field to use as the value of each map entry
|
||||
@ -24,182 +38,355 @@ class SS_Map implements ArrayAccess, Countable, IteratorAggregate {
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the key field for this map
|
||||
* Set the key field for this map.
|
||||
*
|
||||
* @var string $keyField
|
||||
*/
|
||||
public function setKeyField($keyField) {
|
||||
$this->keyField = $keyField;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the value field for this map
|
||||
* Set the value field for this map.
|
||||
*
|
||||
* @var string $valueField
|
||||
*/
|
||||
public function setValueField($valueField) {
|
||||
$this->valueField = $valueField;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return an array equivalent to this map
|
||||
* Return an array equivalent to this map.
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function toArray() {
|
||||
$array = array();
|
||||
|
||||
foreach($this as $k => $v) {
|
||||
$array[$k] = $v;
|
||||
}
|
||||
|
||||
return $array;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return all the keys of this map
|
||||
* Return all the keys of this map.
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function keys() {
|
||||
$output = array();
|
||||
foreach($this as $k => $v) {
|
||||
$output[] = $k;
|
||||
}
|
||||
return $output;
|
||||
return array_keys($this->toArray());
|
||||
}
|
||||
|
||||
/**
|
||||
* Return all the values of this map
|
||||
* Return all the values of this map.
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function values() {
|
||||
$output = array();
|
||||
foreach($this as $k => $v) {
|
||||
$output[] = $v;
|
||||
}
|
||||
return $output;
|
||||
return array_values($this->toArray());
|
||||
}
|
||||
|
||||
/**
|
||||
* Unshift an item onto the start of the map
|
||||
* Unshift an item onto the start of the map.
|
||||
*
|
||||
* Stores the value in addition to the {@link DataQuery} for the map.
|
||||
*
|
||||
* @var string $key
|
||||
* @var mixed $value
|
||||
*/
|
||||
public function unshift($key, $value) {
|
||||
$oldItems = $this->firstItems;
|
||||
$this->firstItems = array($key => $value);
|
||||
if($oldItems) $this->firstItems = $this->firstItems + $oldItems;
|
||||
$this->firstItems = array(
|
||||
$key => $value
|
||||
);
|
||||
|
||||
if($oldItems) {
|
||||
$this->firstItems = $this->firstItems + $oldItems;
|
||||
}
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Pushes an item onto the end of the map.
|
||||
*
|
||||
* @var string $key
|
||||
* @var mixed $value
|
||||
*/
|
||||
public function push($key, $value) {
|
||||
$oldItems = $this->lastItems;
|
||||
|
||||
$this->lastItems = array(
|
||||
$key => $value
|
||||
);
|
||||
|
||||
if($oldItems) {
|
||||
$this->lastItems = $this->lastItems + $oldItems;
|
||||
}
|
||||
|
||||
return $this;
|
||||
}
|
||||
|
||||
// ArrayAccess
|
||||
|
||||
/**
|
||||
* @var string $key
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function offsetExists($key) {
|
||||
if(isset($this->firstItems[$key])) return true;
|
||||
if(isset($this->firstItems[$key])) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if(isset($this->lastItems[$key])) {
|
||||
return true;
|
||||
}
|
||||
|
||||
$record = $this->list->find($this->keyField, $key);
|
||||
|
||||
return $record != null;
|
||||
}
|
||||
|
||||
/**
|
||||
* @var string $key
|
||||
*
|
||||
* @return mixed
|
||||
*/
|
||||
public function offsetGet($key) {
|
||||
if(isset($this->firstItems[$key])) return $this->firstItems[$key];
|
||||
if(isset($this->firstItems[$key])) {
|
||||
return $this->firstItems[$key];
|
||||
}
|
||||
|
||||
if(isset($this->lastItems[$key])) {
|
||||
return $this->lastItems[$key];
|
||||
}
|
||||
|
||||
$record = $this->list->find($this->keyField, $key);
|
||||
|
||||
if($record) {
|
||||
$col = $this->valueField;
|
||||
return $record->$col;
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
public function offsetSet($key, $value) {
|
||||
if(isset($this->firstItems[$key])) return $this->firstItems[$key] = $value;
|
||||
|
||||
user_error("SS_Map is read-only", E_USER_ERROR);
|
||||
return $record->$col;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets a value in the map by a given key that has been set via
|
||||
* {@link SS_Map::push()} or {@link SS_Map::unshift()}
|
||||
*
|
||||
* Keys in the map cannot be set since these values are derived from a
|
||||
* {@link DataQuery} instance. In this case, use {@link SS_Map::toArray()}
|
||||
* and manipulate the resulting array.
|
||||
*
|
||||
* @var string $key
|
||||
* @var mixed $value
|
||||
*/
|
||||
public function offsetSet($key, $value) {
|
||||
if(isset($this->firstItems[$key])) {
|
||||
return $this->firstItems[$key] = $value;
|
||||
}
|
||||
|
||||
if(isset($this->lastItems[$key])) {
|
||||
return $this->lastItems[$key] = $value;
|
||||
}
|
||||
|
||||
user_error(
|
||||
"SS_Map is read-only. Please use $map->push($key, $value) to append values",
|
||||
E_USER_ERROR
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes a value in the map by a given key which has been added to the map
|
||||
* via {@link SS_Map::push()} or {@link SS_Map::unshift()}
|
||||
*
|
||||
* Keys in the map cannot be unset since these values are derived from a
|
||||
* {@link DataQuery} instance. In this case, use {@link SS_Map::toArray()}
|
||||
* and manipulate the resulting array.
|
||||
*
|
||||
* @var string $key
|
||||
* @var mixed $value
|
||||
*/
|
||||
public function offsetUnset($key) {
|
||||
if(isset($this->firstItems[$key])) {
|
||||
unset($this->firstItems[$key]);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
user_error("SS_Map is read-only", E_USER_ERROR);
|
||||
if(isset($this->lastItems[$key])) {
|
||||
unset($this->lastItems[$key]);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
user_error(
|
||||
"SS_Map is read-only. Unset cannot be called on keys derived from the DataQuery",
|
||||
E_USER_ERROR
|
||||
);
|
||||
}
|
||||
|
||||
// IteratorAggreagte
|
||||
|
||||
/**
|
||||
* Returns an SS_Map_Iterator instance for iterating over the complete set
|
||||
* of items in the map.
|
||||
*
|
||||
* Satisfies the IteratorAggreagte interface.
|
||||
*
|
||||
* @return SS_Map_Iterator
|
||||
*/
|
||||
public function getIterator() {
|
||||
return new SS_Map_Iterator($this->list->getIterator(), $this->keyField, $this->valueField, $this->firstItems);
|
||||
return new SS_Map_Iterator(
|
||||
$this->list->getIterator(),
|
||||
$this->keyField,
|
||||
$this->valueField,
|
||||
$this->firstItems,
|
||||
$this->lastItems
|
||||
);
|
||||
}
|
||||
|
||||
// Countable
|
||||
|
||||
/**
|
||||
* Returns the count of items in the list including the additional items set
|
||||
* through {@link SS_Map::push()} and {@link SS_Map::unshift}.
|
||||
*
|
||||
* @return int
|
||||
*/
|
||||
public function count() {
|
||||
return $this->list->count();
|
||||
return $this->list->count() +
|
||||
count($this->firstItems) +
|
||||
count($this->lastItems);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Builds a map iterator around an Iterator. Called by SS_Map
|
||||
*
|
||||
* @package framework
|
||||
* @subpackage model
|
||||
*/
|
||||
class SS_Map_Iterator implements Iterator {
|
||||
|
||||
protected $items;
|
||||
protected $keyField, $titleField;
|
||||
|
||||
protected $firstItemIdx = 0;
|
||||
|
||||
protected $endItemIdx;
|
||||
|
||||
protected $firstItems = array();
|
||||
protected $lastItems = array();
|
||||
|
||||
protected $excludedItems = array();
|
||||
|
||||
/**
|
||||
* @param $items The iterator to build this map from
|
||||
* @param $keyField The field to use for the keys
|
||||
* @param $titleField The field to use for the values
|
||||
* @param $fistItems An optional map of items to show first
|
||||
* @param Iterator $items The iterator to build this map from
|
||||
* @param string $keyField The field to use for the keys
|
||||
* @param string $titleField The field to use for the values
|
||||
* @param array $fristItems An optional map of items to show first
|
||||
* @param array $lastItems An optional map of items to show last
|
||||
*/
|
||||
public function __construct(Iterator $items, $keyField, $titleField, $firstItems = null) {
|
||||
public function __construct(Iterator $items, $keyField, $titleField, $firstItems = null, $lastItems = null) {
|
||||
$this->items = $items;
|
||||
$this->keyField = $keyField;
|
||||
$this->titleField = $titleField;
|
||||
|
||||
foreach($firstItems as $k => $v) {
|
||||
$this->firstItems[] = array($k,$v);
|
||||
$this->excludedItems[] = $k;
|
||||
$this->endItemIdx = null;
|
||||
|
||||
if($firstItems) {
|
||||
foreach($firstItems as $k => $v) {
|
||||
$this->firstItems[] = array($k,$v);
|
||||
$this->excludedItems[] = $k;
|
||||
}
|
||||
}
|
||||
|
||||
if($lastItems) {
|
||||
foreach($lastItems as $k => $v) {
|
||||
$this->lastItems[] = array($k, $v);
|
||||
$this->excludedItems[] = $k;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// Iterator functions
|
||||
|
||||
/**
|
||||
* Rewind the Iterator to the first element.
|
||||
*
|
||||
* @return mixed
|
||||
*/
|
||||
public function rewind() {
|
||||
$this->firstItemIdx = 0;
|
||||
$this->endItemIdx = null;
|
||||
|
||||
$rewoundItem = $this->items->rewind();
|
||||
|
||||
if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
return $this->firstItems[$this->firstItemIdx][1];
|
||||
} else {
|
||||
if($rewoundItem) return ($rewoundItem->hasMethod($this->titleField))
|
||||
? $rewoundItem->{$this->titleField}()
|
||||
: $rewoundItem->{$this->titleField};
|
||||
if($rewoundItem) {
|
||||
if($rewoundItem->hasMethod($this->titleField)) {
|
||||
return $rewoundItem->{$this->titleField}();
|
||||
}
|
||||
|
||||
return $rewoundItem->{$this->titleField};
|
||||
} else if(!$this->items->valid() && $this->lastItems) {
|
||||
$this->endItemIdx = 0;
|
||||
|
||||
return $this->lastItems[0][1];
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the current element.
|
||||
*
|
||||
* @return mixed
|
||||
*/
|
||||
public function current() {
|
||||
if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
if(($this->endItemIdx !== null) && isset($this->lastItems[$this->endItemIdx])) {
|
||||
return $this->lastItems[$this->endItemIdx][1];
|
||||
} else if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
return $this->firstItems[$this->firstItemIdx][1];
|
||||
} else {
|
||||
return ($this->items->current()->hasMethod($this->titleField))
|
||||
? $this->items->current()->{$this->titleField}()
|
||||
: $this->items->current()->{$this->titleField};
|
||||
if($this->items->current()->hasMethod($this->titleField)) {
|
||||
return $this->items->current()->{$this->titleField}();
|
||||
}
|
||||
|
||||
return $this->items->current()->{$this->titleField};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the key of the current element.
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public function key() {
|
||||
if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
if(($this->endItemIdx !== null) && isset($this->lastItems[$this->endItemIdx])) {
|
||||
return $this->lastItems[$this->endItemIdx][0];
|
||||
} else if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
return $this->firstItems[$this->firstItemIdx][0];
|
||||
|
||||
} else {
|
||||
return $this->items->current()->{$this->keyField};
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Move forward to next element.
|
||||
*
|
||||
* @return mixed
|
||||
*/
|
||||
public function next() {
|
||||
$this->firstItemIdx++;
|
||||
|
||||
if(isset($this->firstItems[$this->firstItemIdx])) {
|
||||
return $this->firstItems[$this->firstItemIdx][1];
|
||||
|
||||
} else {
|
||||
if(!isset($this->firstItems[$this->firstItemIdx-1])) $this->items->next();
|
||||
if(!isset($this->firstItems[$this->firstItemIdx-1])) {
|
||||
$this->items->next();
|
||||
}
|
||||
|
||||
if($this->excludedItems) {
|
||||
while(($c = $this->items->current()) && in_array($c->{$this->keyField}, $this->excludedItems, true)) {
|
||||
@ -207,9 +394,34 @@ class SS_Map_Iterator implements Iterator {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if(!$this->items->valid()) {
|
||||
// iterator has passed the preface items, off the end of the items
|
||||
// list. Track through the end items to go through to the next
|
||||
if($this->endItemIdx === null) {
|
||||
$this->endItemIdx = -1;
|
||||
}
|
||||
|
||||
$this->endItemIdx++;
|
||||
|
||||
if(isset($this->lastItems[$this->endItemIdx])) {
|
||||
return $this->lastItems[$this->endItemIdx];
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if current position is valid.
|
||||
*
|
||||
* @return boolean
|
||||
*/
|
||||
public function valid() {
|
||||
return $this->items->valid();
|
||||
return (
|
||||
(isset($this->firstItems[$this->firstItemIdx])) ||
|
||||
(($this->endItemIdx !== null) && isset($this->lastItems[$this->endItemIdx])) ||
|
||||
$this->items->valid()
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,6 +1,11 @@
|
||||
<?php
|
||||
|
||||
/**
|
||||
* @package framework
|
||||
* @subpackage tests
|
||||
*/
|
||||
class SS_MapTest extends SapphireTest {
|
||||
|
||||
// Borrow the model from DataObjectTest
|
||||
protected static $fixture_file = 'DataObjectTest.yml';
|
||||
|
||||
@ -16,6 +21,43 @@ class SS_MapTest extends SapphireTest {
|
||||
'DataObjectTest_TeamComment'
|
||||
);
|
||||
|
||||
|
||||
public function testValues() {
|
||||
$list = DataObjectTest_TeamComment::get()->sort('Name');
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'This is a team comment by Bob',
|
||||
'This is a team comment by Joe',
|
||||
'Phil is a unique guy, and comments on team2'
|
||||
), $map->values());
|
||||
|
||||
|
||||
$map->push('Push', 'Item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'This is a team comment by Bob',
|
||||
'This is a team comment by Joe',
|
||||
'Phil is a unique guy, and comments on team2',
|
||||
'Item'
|
||||
), $map->values());
|
||||
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->push('Push', 'Pushed value');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Pushed value'
|
||||
), $map->values());
|
||||
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->unshift('Unshift', 'Unshift item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Unshift item'
|
||||
), $map->values());
|
||||
}
|
||||
|
||||
|
||||
public function testArrayAccess() {
|
||||
$list = DataObjectTest_TeamComment::get();
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
@ -65,6 +107,39 @@ class SS_MapTest extends SapphireTest {
|
||||
'Joe',
|
||||
'Phil'
|
||||
), $map->keys());
|
||||
|
||||
$map->unshift('Unshift', 'Item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Unshift',
|
||||
'Bob',
|
||||
'Joe',
|
||||
'Phil'
|
||||
), $map->keys());
|
||||
|
||||
$map->push('Push', 'Item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Unshift',
|
||||
'Bob',
|
||||
'Joe',
|
||||
'Phil',
|
||||
'Push'
|
||||
), $map->keys());
|
||||
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->push('Push', 'Item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Push'
|
||||
), $map->keys());
|
||||
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->unshift('Unshift', 'Item');
|
||||
|
||||
$this->assertEquals(array(
|
||||
'Unshift'
|
||||
), $map->keys());
|
||||
}
|
||||
|
||||
public function testMethodAsValueField() {
|
||||
@ -80,16 +155,6 @@ class SS_MapTest extends SapphireTest {
|
||||
), $map->values());
|
||||
}
|
||||
|
||||
public function testValues() {
|
||||
$list = DataObjectTest_TeamComment::get()->sort('Name');
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
$this->assertEquals(array(
|
||||
'This is a team comment by Bob',
|
||||
'This is a team comment by Joe',
|
||||
'Phil is a unique guy, and comments on team2'
|
||||
), $map->values());
|
||||
}
|
||||
|
||||
public function testUnshift() {
|
||||
$list = DataObjectTest_TeamComment::get();
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
@ -137,7 +202,103 @@ class SS_MapTest extends SapphireTest {
|
||||
"Bob" => "Replaced",
|
||||
0 => "(Select)",
|
||||
-1 => "(All)"), $map->toArray());
|
||||
}
|
||||
|
||||
public function testPush() {
|
||||
$list = DataObjectTest_TeamComment::get();
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
|
||||
$map->push(1, '(All)');
|
||||
|
||||
$this->assertEquals(array(
|
||||
"Joe" => "This is a team comment by Joe",
|
||||
"Bob" => "This is a team comment by Bob",
|
||||
"Phil" => "Phil is a unique guy, and comments on team2",
|
||||
1 => "(All)"
|
||||
), $map->toArray());
|
||||
}
|
||||
|
||||
public function testCount() {
|
||||
$list = DataObjectTest_TeamComment::get();
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
|
||||
$this->assertEquals(3, $map->count());
|
||||
|
||||
// pushing a new item should update the count
|
||||
$map->push(1, 'Item pushed');
|
||||
$this->assertEquals(4, $map->count());
|
||||
|
||||
$map->unshift(2, 'Item shifted');
|
||||
$this->assertEquals(5, $map->count());
|
||||
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->unshift('1', 'shifted');
|
||||
|
||||
$this->assertEquals(1, $map->count());
|
||||
|
||||
unset($map[1]);
|
||||
$this->assertEquals(0, $map->count());
|
||||
}
|
||||
|
||||
public function testIterationWithUnshift() {
|
||||
$list = DataObjectTest_TeamComment::get()->sort('ID');
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
$map->unshift(1, 'Unshifted');
|
||||
|
||||
$text = "";
|
||||
|
||||
foreach($map as $k => $v) {
|
||||
$text .= "$k: $v\n";
|
||||
}
|
||||
|
||||
$this->assertEquals("1: Unshifted\n"
|
||||
. "Joe: This is a team comment by Joe\n"
|
||||
. "Bob: This is a team comment by Bob\n"
|
||||
. "Phil: Phil is a unique guy, and comments on team2\n", $text
|
||||
);
|
||||
}
|
||||
|
||||
public function testIterationWithPush() {
|
||||
$list = DataObjectTest_TeamComment::get()->sort('ID');
|
||||
$map = new SS_Map($list, 'Name', 'Comment');
|
||||
$map->push(1, 'Pushed');
|
||||
|
||||
$text = "";
|
||||
|
||||
foreach($map as $k => $v) {
|
||||
$text .= "$k: $v\n";
|
||||
}
|
||||
|
||||
$this->assertEquals("Joe: This is a team comment by Joe\n"
|
||||
. "Bob: This is a team comment by Bob\n"
|
||||
. "Phil: Phil is a unique guy, and comments on team2\n"
|
||||
. "1: Pushed\n", $text
|
||||
);
|
||||
}
|
||||
|
||||
public function testIterationWithEmptyListUnshifted() {
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->unshift('1', 'unshifted');
|
||||
|
||||
$text = "";
|
||||
|
||||
foreach($map as $k => $v) {
|
||||
$text .= "$k: $v\n";
|
||||
}
|
||||
|
||||
$this->assertEquals("1: unshifted\n", $text);
|
||||
}
|
||||
|
||||
public function testIterationWithEmptyListPushed() {
|
||||
$map = new SS_Map(new ArrayList());
|
||||
$map->push('1', 'pushed');
|
||||
|
||||
$text = "";
|
||||
|
||||
foreach($map as $k => $v) {
|
||||
$text .= "$k: $v\n";
|
||||
}
|
||||
|
||||
$this->assertEquals("1: pushed\n", $text);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user