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Merge pull request #7035 from mfendeksilverstripe/3.5

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TreeDropDown performance boost.
This commit is contained in:
Daniel Hensby 2017-06-21 13:19:09 +01:00 committed by GitHub
commit 9888cbc406
3 changed files with 124 additions and 21 deletions
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70
forms/TreeDropdownField.php
View File

@ -107,6 +107,13 @@ class TreeDropdownField extends FormField {
$this->childrenMethod = 'ChildFolders';
$this->numChildrenMethod = 'numChildFolders';
}
else {
// AllChildren should be used as a default because
// if you use AllChildrenIncludingDeleted instead, the filters will be much more demanding
// this is because instead of working with DataList you will be working with ArrayList
// AllChildren should be always used when dealing with more pages than the node leaf limit
$this->childrenMethod = 'AllChildren';
}
$this->addExtraClass('single');
@ -303,16 +310,57 @@ class TreeDropdownField extends FormField {
if ($this->filterCallback || $this->search != "" )
$obj->setMarkingFilterFunction(array($this, "filterMarking"));
$obj->markPartialTree($nodeCountThreshold = 30, $context = null,
$this->childrenMethod, $this->numChildrenMethod);
// prepare a filter by ids, this is very useful when we have thousands of child pages under common parent
$filteredIds = ($this->search != '' && !is_null($this->searchIds) && is_array($this->searchIds))
? array_keys($this->searchIds) : array();
// collect IDs of currently selected pages (this includes hierarchy path)
$forceValue = $request->requestVar('forceValue');
if (!is_null($forceValue) || $this->value) {
$fieldValue = (!is_null($forceValue) ? $forceValue : $this->value);
if (($values = preg_split('/,\s*/', $fieldValue)) && count($values)) {
foreach ($values as $value) {
if (!$value || $value == 'unchanged') {
continue;
}
$selectedObject = $this->objectForKey($value);
// add all pages along the hierarchy path
$stack = $selectedObject->parentStack();
foreach ($stack as $stackItem) {
$filteredIds[] = $stackItem->ID;
}
}
}
}
// main node leaf limit configuration
$nodeCountThreshold = 30;
$obj->markPartialTree(
$nodeCountThreshold, $context = null,
$this->childrenMethod, $this->numChildrenMethod, $filteredIds
);
// allow to pass values to be selected within the ajax request
if( isset($_REQUEST['forceValue']) || $this->value ) {
$forceValue = ( isset($_REQUEST['forceValue']) ? $_REQUEST['forceValue'] : $this->value);
if(($values = preg_split('/,\s*/', $forceValue)) && count($values)) foreach($values as $value) {
if(!$value || $value == 'unchanged') continue;
if (!is_null($forceValue) || $this->value) {
$fieldValue = (!is_null($forceValue) ? $forceValue : $this->value);
$obj->markToExpose($this->objectForKey($value));
if (($values = preg_split('/,\s*/', $fieldValue)) && count($values)) {
foreach ($values as $value) {
if (!$value || $value == 'unchanged') {
continue;
}
$obj->markToExpose(
$this->objectForKey($value),
$this->childrenMethod,
$this->numChildrenMethod,
$nodeCountThreshold,
$filteredIds
);
}
}
}
@ -337,7 +385,7 @@ class TreeDropdownField extends FormField {
// Skip the check if we're filtering the tree, since its not clear how many children will
// match the filter criteria until they're queried (and matched up with previously marked nodes).
$nodeThresholdLeaf = Config::inst()->get('Hierarchy', 'node_threshold_leaf');
if($nodeThresholdLeaf && !$this->filterCallback && !$this->search) {
if($nodeThresholdLeaf && !$this->filterCallback && !$this->search && count($filteredIds) == 0) {
$className = $this->sourceObject;
$nodeCountCallback = function($parent, $numChildren) use($className, $nodeThresholdLeaf) {
if($className == 'SiteTree' && $parent->ID && $numChildren > $nodeThresholdLeaf) {
@ -361,7 +409,8 @@ class TreeDropdownField extends FormField {
$this->numChildrenMethod,
true, // root call
null,
$nodeCountCallback
$nodeCountCallback,
$filteredIds
);
return substr(trim($html), 4, -5);
} else {
@ -374,7 +423,8 @@ class TreeDropdownField extends FormField {
$this->numChildrenMethod,
true, // root call
null,
$nodeCountCallback
$nodeCountCallback,
$filteredIds
);
return $html;
}

71
model/Hierarchy.php
View File

@ -118,6 +118,7 @@ class Hierarchy extends DataExtension {
* overload this function
* @param bool $limitToMarked Display only marked children
* @param string $childrenMethod The name of the method used to get children from each object
* @param string $numChildrenMethod The name of the instance method to call to count the object's children
* @param bool $rootCall Set to true for this first call, and then to false for calls inside
* the recursion. You should not change this.
* @param int $nodeCountThreshold See {@link self::$node_threshold_total}
@ -125,12 +126,14 @@ class Hierarchy extends DataExtension {
* intercept the query. Useful e.g. to avoid excessive children listings
* (Arguments: $parent, $numChildren)
*
* @param array $filteredIds list of ids that will be used to filter list items (reduce the result set before processing)
*
* @return string
*/
public function getChildrenAsUL($attributes = "", $titleEval = '"<li>" . $child->Title', $extraArg = null,
$limitToMarked = false, $childrenMethod = "AllChildrenIncludingDeleted",
$numChildrenMethod = "numChildren", $rootCall = true,
$nodeCountThreshold = null, $nodeCountCallback = null) {
$nodeCountThreshold = null, $nodeCountCallback = null, array $filteredIds = array()) {
if(!is_numeric($nodeCountThreshold)) {
$nodeCountThreshold = Config::inst()->get('Hierarchy', 'node_threshold_total');
@ -149,6 +152,18 @@ class Hierarchy extends DataExtension {
if($this->owner->hasMethod($childrenMethod)) {
$children = $this->owner->$childrenMethod($extraArg);
// apply filter before any further processing to limit excessive amount of items
// filter is applied only after limit has been reached
if (count($filteredIds) > 0 && $nodeCountThreshold && $children->count() > $nodeCountThreshold) {
$children = $children->filter(array('ID' => $filteredIds));
}
// too many children, display nothing
if ($nodeCountThreshold && $children->count() > $nodeCountThreshold) {
$children = null;
}
} else {
user_error(sprintf("Can't find the method '%s' on class '%s' for getting tree children",
$childrenMethod, get_class($this->owner)), E_USER_ERROR);
@ -188,7 +203,7 @@ class Hierarchy extends DataExtension {
$child->markClosed();
} else {
$output .= $child->getChildrenAsUL("", $titleEval, $extraArg, $limitToMarked,
$childrenMethod, $numChildrenMethod, false, $nodeCountThreshold);
$childrenMethod, $numChildrenMethod, false, $nodeCountThreshold, null, $filteredIds);
}
} elseif($child->isTreeOpened()) {
// Since we're not loading children, don't mark it as open either
@ -216,10 +231,14 @@ class Hierarchy extends DataExtension {
* {@link isExpanded()} and {@link isMarked()} on individual nodes.
*
* @param int $nodeCountThreshold See {@link getChildrenAsUL()}
* @param mixed $context
* @param string $childrenMethod The name of the instance method to call to get the object's list of children
* @param string $numChildrenMethod The name of the instance method to call to count the object's children
* @param array $filteredIds list of ids that will be used to filter list items (reduce the result set before processing)
* @return int The actual number of nodes marked.
*/
public function markPartialTree($nodeCountThreshold = 30, $context = null,
$childrenMethod = "AllChildrenIncludingDeleted", $numChildrenMethod = "numChildren") {
$childrenMethod = "AllChildrenIncludingDeleted", $numChildrenMethod = "numChildren", array $filteredIds = array()) {
if(!is_numeric($nodeCountThreshold)) $nodeCountThreshold = 30;
@ -228,7 +247,19 @@ class Hierarchy extends DataExtension {
// foreach can't handle an ever-growing $nodes list
while(list($id, $node) = each($this->markedNodes)) {
$children = $this->markChildren($node, $context, $childrenMethod, $numChildrenMethod);
// first determine the number of children, if it's too high the tree view can't be used
// so will will not even bother to display the subtree
// this covers two cases:
// either no search filter is in use or search filter is in use but it's too broad
$numberOfChildren = $node->$numChildrenMethod();
if ($nodeCountThreshold && $numberOfChildren > $nodeCountThreshold
&& (count($filteredIds) == 0 || count($filteredIds) > $nodeCountThreshold)) {
break;
}
$children = $this->markChildren(
$node, $context, $childrenMethod, $numChildrenMethod, $nodeCountThreshold, $filteredIds
);
if($nodeCountThreshold && sizeof($this->markedNodes) > $nodeCountThreshold) {
// Undo marking children as opened since they're lazy loaded
if($children) foreach($children as $child) $child->markClosed();
@ -299,12 +330,20 @@ class Hierarchy extends DataExtension {
* @param mixed $context
* @param string $childrenMethod The name of the instance method to call to get the object's list of children
* @param string $numChildrenMethod The name of the instance method to call to count the object's children
* @param int $nodeCountThreshold
* @param array $filteredIds list of ids that will be used to filter list items (reduce the result set before processing)
* @return DataList
*/
public function markChildren($node, $context = null, $childrenMethod = "AllChildrenIncludingDeleted",
$numChildrenMethod = "numChildren") {
$numChildrenMethod = "numChildren", $nodeCountThreshold = null, array $filteredIds = array()) {
if($node->hasMethod($childrenMethod)) {
$children = $node->$childrenMethod($context);
// apply filter before any further processing
if (count($filteredIds) > 0 && $nodeCountThreshold && $children->count() > $nodeCountThreshold) {
$children = $children->filter(array('ID' => $filteredIds));
}
} else {
user_error(sprintf("Can't find the method '%s' on class '%s' for getting tree children",
$childrenMethod, get_class($node)), E_USER_ERROR);
@ -375,11 +414,18 @@ class Hierarchy extends DataExtension {
*
* @param int $id ID of parent node
* @param bool $open If this is true, mark the parent node as opened
* @param string $childrenMethod The name of the instance method to call to get the object's list of children
* @param string $numChildrenMethod The name of the instance method to call to count the object's children
* @param int $nodeCountThreshold
* @param array $filteredIds list of ids that will be used to filter list items (reduce the result set before processing)
* @return bool
*/
public function markById($id, $open = false) {
public function markById($id, $open = false, $childrenMethod = "AllChildrenIncludingDeleted",
$numChildrenMethod = "numChildren", $nodeCountThreshold = null, array $filteredIds = array()) {
if(isset($this->markedNodes[$id])) {
$this->markChildren($this->markedNodes[$id]);
$this->markChildren(
$this->markedNodes[$id], null, $childrenMethod, $numChildrenMethod, $nodeCountThreshold, $filteredIds
);
if($open) {
$this->markedNodes[$id]->markOpened();
}
@ -393,12 +439,19 @@ class Hierarchy extends DataExtension {
* Expose the given object in the tree, by marking this page and all it ancestors.
*
* @param DataObject $childObj
* @param string $childrenMethod The name of the instance method to call to get the object's list of children
* @param string $numChildrenMethod The name of the instance method to call to count the object's children
* @param int $nodeCountThreshold
* @param array $filteredIds list of ids that will be used to filter list items (reduce the result set before processing)
*/
public function markToExpose($childObj) {
public function markToExpose($childObj, $childrenMethod = "AllChildrenIncludingDeleted",
$numChildrenMethod = "numChildren", $nodeCountThreshold = null, array $filteredIds = array()) {
if(is_object($childObj)){
$stack = array_reverse($childObj->parentStack());
foreach($stack as $stackItem) {
$this->markById($stackItem->ID, true);
$this->markById(
$stackItem->ID, true, $childrenMethod, $numChildrenMethod, $nodeCountThreshold, $filteredIds
);
}
}
}

4
tests/model/HierarchyTest.php
View File

@ -455,7 +455,7 @@ EOT;
$obj2aa->delete();
$obj2ab->delete();
// Don't pre-load all children
$nodeCountThreshold = 1;
$nodeCountThreshold = 3;
$childrenMethod = 'AllChildren';
$numChildrenMethod = 'numChildren';
@ -500,7 +500,7 @@ EOT;
$obj2aa->delete();
$obj2ab->delete();
// Don't pre-load all children
$nodeCountThreshold = 1;
$nodeCountThreshold = 3;
$childrenMethod = 'AllChildrenIncludingDeleted';
$numChildrenMethod = 'numHistoricalChildren';