interface ForumIndexStorageInterface

interface ForumIndexStorageInterface {
    
    /**
     * Returns the forum term id associated with an existing forum node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The existing forum node.
     *
     * @return int
     *   The forum term id currently associated with the node.
     */
    public function getOriginalTermId(NodeInterface $node);
    
    /**
     * Creates a record in {forum} table for the given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the record is to be created.
     */
    public function create(NodeInterface $node);
    
    /**
     * Reads an array of {forum} records for the given revision ids.
     *
     * @param array $vids
     *   An array of node revision ids.
     *
     * @return \Drupal\Core\Database\StatementInterface
     *   The records from {forum} for the given vids.
     */
    public function read(array $vids);
    
    /**
     * Updates the {forum} table for the given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the record is to be updated.
     */
    public function update(NodeInterface $node);
    
    /**
     * Deletes the records in {forum} table for the given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the records are to be deleted.
     */
    public function delete(NodeInterface $node);
    
    /**
     * Deletes the records in {forum} table for a given node revision.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node revision for which the records are to be deleted.
     */
    public function deleteRevision(NodeInterface $node);
    
    /**
     * Creates a {forum_index} entry for the given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the index records are to be created.
     */
    public function createIndex(NodeInterface $node);
    
    /**
     * Updates the {forum_index} records for a given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the index records are to be updated.
     */
    public function updateIndex(NodeInterface $node);
    
    /**
     * Deletes the {forum_index} records for a given node.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node for which the index records are to be deleted.
     */
    public function deleteIndex(NodeInterface $node);

}