/**
* JDoublyLinkedList::createNode()
*
* @param mixed $value
* @return
*/
public function createNode($value)
{
if (!isset($value)) {
throw new Exception('A value is required to create a node');
}
$node = new JNode($value);
$uid = $node->getUid();
$this->_list[$uid] = $node;
return $uid;
}
/**
* JTree::createNode()
*
* Create a node, store in hash table
* return the reference uid
* @param mixed $value
* @param string $uid
* @return string $uid
*/
public function createNode($value, $uid = null, $parentUid = null)
{
if (!isset($value)) {
throw new Exception('A value is required to create a node');
}
//check if this node is already ready
//in which case it must up for modification
if (isset($this->_list[$uid])) {
$this->modifyNode($value, $uid, $parentUid);
} else {
//base node
$node = new JNode($value, $uid, $parentUid);
$uid = $node->getUid();
$this->_list[$uid] = $node;
}
//now to check if the parent node is ready
//if not prepare one now.
if (isset($parentUid) && !isset($this->_list[$parentUid])) {
$parentNode = new JNode(null, $parentUid);
$parentUid = $parentNode->getUid();
$this->_list[$parentUid] = $parentNode;
}
//this node now becomes the child of
//the parent node.
if (isset($parentUid) && isset($this->_list[$parentUid])) {
$this->addChild($parentUid, $uid);
}
return $uid;
}
