/**
* Select nodes by values, using the tree that has been created by nodes injections.
* Nodes have been instantiated prior to the tree's creation.
*/
public function testSelectObjects()
{
/**
* @var Node $selected[0]
* @var Node $selected[1]
* @var Node $selected[2]
* @var array $selected
*/
// --- Test 1
$selector = function ($inData) {
return preg_match('/^C|D|E$/', $inData);
};
$selected = $this->__treeByObjects->select($selector);
$ids = array_map(function (Node $v) {
return spl_object_hash($v);
}, $selected);
$this->assertCount(3, $selected);
$this->assertContains(spl_object_hash($this->__nodesObjects[2]), $ids);
$this->assertContains(spl_object_hash($this->__nodesObjects[3]), $ids);
$this->assertContains(spl_object_hash($this->__nodesObjects[4]), $ids);
// --- Test 2
$selector = function ($inData) {
return preg_match('/^A|X|Y|Z$/', $inData);
};
$selected = $this->__treeByObjects->select($selector);
$ids = array_map(function (Node $v) {
return spl_object_hash($v);
}, $selected);
$this->assertCount(2, $selected);
$this->assertContains(spl_object_hash($this->__nodesObjects[0]), $ids);
$this->assertContains(spl_object_hash($this->__nodesObjects[14]), $ids);
}
<?php
/**
* This example shows how to select nodes based on their data's values.
*/
include __DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
use dbeurive\Tree\Tree;
$tree = new Tree("getRoot");
$tree->getRoot()->addChild("A")->end()->addChild("B")->end()->addChild("C")->addChild("D")->addChild("E")->addChild("EE")->end()->addChild("EEE")->end()->end()->addChild("F")->end()->end()->addChild("A")->addChild('H')->addChild("I")->addChild("J")->addChild("K")->end()->addChild("L")->end()->end()->end()->end()->end()->end();
/**
* This function is used to select nodes based on their values.
* @param string $inData Nodes' data.
* @return bool If the data must be kept, then the function returns the value true. Otherwise, it returns tha value true.
*/
$dataSelector = function ($inData) {
return 1 === preg_match('/^E+$/', $inData);
};
// We should select the nodes which data is: "E", "EE" and "EEE".
$selection = $tree->select($dataSelector);
/** @var \dbeurive\Tree\Node $_node */
foreach ($selection as $_node) {
print $_node->getData() . " -> Object(" . spl_object_hash($_node) . ")\n";
}
