CyclicGraphException.php in Subgroup (Graph) 1.0.x

Namespace

Drupal\ggroup\Graph

File

src/Graph/CyclicGraphException.php

<?php

namespace Drupal\ggroup\Graph;


/**
 * An exception thrown when a potential cycle is detected in an acyclic graph.
 */
class CyclicGraphException extends \Exception {

  /**
   * Constructs an CyclicGraphException.
   *
   * @param int|string $parent
   *   The parent group ID or name.
   * @param int|string $child
   *   The child group ID or name.
   */
  public function __construct($parent, $child) {
    parent::__construct("Cannot add group '{$child}' as a subgroup of group '{$parent}' because group '{$parent}' is already a descendant subgroup of group '{$child}'. Cyclic relationships cannot be handled.");
  }

}

Classes

Name	Description
CyclicGraphException	An exception thrown when a potential cycle is detected in an acyclic graph.