Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/book/src/BookOutlineStorageInterface.php

@@ -0,0 +1,174 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\book\BookOutlineStorageInterface.
+*/
+
+namespace Drupal\book;
+
+/**
+ * Defines a common interface for book outline storage classes.
+ */
+interface BookOutlineStorageInterface {
+
+  /**
+   * Gets books (the highest positioned book links).
+   *
+   * @return array
+   *   An array of book IDs.
+   */
+  public function getBooks();
+
+  /**
+   * Checks if there are any books.
+   *
+   * @return bool
+   *   TRUE if there are books, FALSE if not.
+   */
+  public function hasBooks();
+
+  /**
+   * Loads books.
+   *
+   * Each book entry consists of the following keys:
+   *   - bid: The node ID of the main book.
+   *   - nid: The node ID of the book entry itself.
+   *   - pid: The parent node ID of the book.
+   *   - has_children: A boolean to indicate whether the book has children.
+   *   - weight: The weight of the book entry to order siblings.
+   *   - depth: The depth in the menu hierarchy the entry is placed into.
+   *
+   * @param array $nids
+   *   An array of node IDs.
+   * @param bool $access
+   *   Whether access checking should be taken into account.
+   *
+   * @return array
+   *   Array of loaded book items.
+   */
+  public function loadMultiple($nids, $access = TRUE);
+
+  /**
+   * Gets child relative depth.
+   *
+   * @param array $book_link
+   *   The book link.
+   *
+   * @param int $max_depth
+   *   The maximum supported depth of the book tree.
+   *
+   * @return int
+   *   The depth of the searched book.
+   */
+  public function getChildRelativeDepth($book_link, $max_depth);
+
+  /**
+   * Deletes a book entry.
+   *
+   * @param int $nid
+   *   Deletes a book entry.
+   *
+   * @return mixed
+   *   Number of deleted book entries.
+   */
+  public function delete($nid);
+
+  /**
+   * Loads book's children using it's parent ID.
+   *
+   * @param int $pid
+   *   The book's parent ID.
+   *
+   * @return array
+   *   Array of loaded book items.
+   */
+  public function loadBookChildren($pid);
+
+  /**
+   * Builds tree data used for the menu tree.
+   *
+   * @param int $bid
+   *   The ID of the book that we are building the tree for.
+   * @param array $parameters
+   *   An associative array of build parameters. For info about individual
+   *   parameters see BookManager::bookTreeBuild().
+   * @param int $min_depth
+   *   The minimum depth of book links in the resulting tree.
+   * @param int $max_depth
+   *   The maximum supported depth of the book tree.
+   *
+   * @return array
+   *   Array of loaded book links.
+   */
+  public function getBookMenuTree($bid, $parameters, $min_depth, $max_depth);
+
+  /**
+   * Inserts a book link.
+   *
+   * @param array $link
+   *   The link array to be inserted in the database.
+   * @param array $parents
+   *   The array of parent ids for the link to be inserted.
+   *
+   * @return mixed
+   *   The last insert ID of the query, if one exists.
+   */
+  public function insert($link, $parents);
+
+
+  /**
+   * Updates book reference for links that were moved between books.
+   *
+   * @param int $nid
+   *   The nid of the book entry to be updated.
+   * @param array $fields
+   *   The array of fields to be updated.
+   *
+   * @return mixed
+   *   The number of rows matched by the update query.
+   */
+  public function update($nid, $fields);
+
+  /**
+   * Update the book ID of the book link that it's being moved.
+   *
+   * @param int $bid
+   *   The ID of the book whose children we move.
+   * @param array $original
+   *   The original parent of the book link.
+   * @param array $expressions
+   *   Array of expressions to be added to the query.
+   * @param int $shift
+   *   The difference in depth between the old and the new position of the
+   *   element being moved.
+   *
+   * @return mixed
+   *   The number of rows matched by the update query.
+   */
+  public function updateMovedChildren($bid, $original, $expressions, $shift);
+
+  /**
+   * Count the number of original link children.
+   *
+   * @param array $original
+   *   The book link array.
+   *
+   * @return int
+   *   Number of children.
+   */
+  public function countOriginalLinkChildren($original);
+
+  /**
+   * Get book subtree.
+   *
+   * @param array $link
+   *   A fully loaded book link.
+   * @param int $max_depth
+   *   The maximum supported depth of the book tree.
+   *
+   * @return array
+   *   Array of unordered subtree book items.
+   */
+  public function getBookSubtree($link, $max_depth);
+}