--- /dev/null
+<?php
+
+namespace Drupal\comment;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\FieldableEntityInterface;
+use Drupal\Core\Entity\Sql\SqlContentEntityStorage;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines the storage handler class for comments.
+ *
+ * This extends the Drupal\Core\Entity\Sql\SqlContentEntityStorage class,
+ * adding required special handling for comment entities.
+ */
+class CommentStorage extends SqlContentEntityStorage implements CommentStorageInterface {
+
+ /**
+ * The current user.
+ *
+ * @var \Drupal\Core\Session\AccountInterface
+ */
+ protected $currentUser;
+
+ /**
+ * Constructs a CommentStorage object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeInterface $entity_info
+ * An array of entity info for the entity type.
+ * @param \Drupal\Core\Database\Connection $database
+ * The database connection to be used.
+ * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+ * The entity manager.
+ * @param \Drupal\Core\Session\AccountInterface $current_user
+ * The current user.
+ * @param \Drupal\Core\Cache\CacheBackendInterface $cache
+ * Cache backend instance to use.
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ */
+ public function __construct(EntityTypeInterface $entity_info, Connection $database, EntityManagerInterface $entity_manager, AccountInterface $current_user, CacheBackendInterface $cache, LanguageManagerInterface $language_manager) {
+ parent::__construct($entity_info, $database, $entity_manager, $cache, $language_manager);
+ $this->currentUser = $current_user;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_info) {
+ return new static(
+ $entity_info,
+ $container->get('database'),
+ $container->get('entity.manager'),
+ $container->get('current_user'),
+ $container->get('cache.entity'),
+ $container->get('language_manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getMaxThread(CommentInterface $comment) {
+ $query = $this->database->select('comment_field_data', 'c')
+ ->condition('entity_id', $comment->getCommentedEntityId())
+ ->condition('field_name', $comment->getFieldName())
+ ->condition('entity_type', $comment->getCommentedEntityTypeId())
+ ->condition('default_langcode', 1);
+ $query->addExpression('MAX(thread)', 'thread');
+ return $query->execute()
+ ->fetchField();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getMaxThreadPerThread(CommentInterface $comment) {
+ $query = $this->database->select('comment_field_data', 'c')
+ ->condition('entity_id', $comment->getCommentedEntityId())
+ ->condition('field_name', $comment->getFieldName())
+ ->condition('entity_type', $comment->getCommentedEntityTypeId())
+ ->condition('thread', $comment->getParentComment()->getThread() . '.%', 'LIKE')
+ ->condition('default_langcode', 1);
+ $query->addExpression('MAX(thread)', 'thread');
+ return $query->execute()
+ ->fetchField();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDisplayOrdinal(CommentInterface $comment, $comment_mode, $divisor = 1) {
+ // Count how many comments (c1) are before $comment (c2) in display order.
+ // This is the 0-based display ordinal.
+ $query = $this->database->select('comment_field_data', 'c1');
+ $query->innerJoin('comment_field_data', 'c2', 'c2.entity_id = c1.entity_id AND c2.entity_type = c1.entity_type AND c2.field_name = c1.field_name');
+ $query->addExpression('COUNT(*)', 'count');
+ $query->condition('c2.cid', $comment->id());
+ if (!$this->currentUser->hasPermission('administer comments')) {
+ $query->condition('c1.status', CommentInterface::PUBLISHED);
+ }
+
+ if ($comment_mode == CommentManagerInterface::COMMENT_MODE_FLAT) {
+ // For rendering flat comments, cid is used for ordering comments due to
+ // unpredictable behavior with timestamp, so we make the same assumption
+ // here.
+ $query->condition('c1.cid', $comment->id(), '<');
+ }
+ else {
+ // For threaded comments, the c.thread column is used for ordering. We can
+ // use the sorting code for comparison, but must remove the trailing
+ // slash.
+ $query->where('SUBSTRING(c1.thread, 1, (LENGTH(c1.thread) - 1)) < SUBSTRING(c2.thread, 1, (LENGTH(c2.thread) - 1))');
+ }
+
+ $query->condition('c1.default_langcode', 1);
+ $query->condition('c2.default_langcode', 1);
+
+ $ordinal = $query->execute()->fetchField();
+
+ return ($divisor > 1) ? floor($ordinal / $divisor) : $ordinal;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getNewCommentPageNumber($total_comments, $new_comments, FieldableEntityInterface $entity, $field_name) {
+ $field = $entity->getFieldDefinition($field_name);
+ $comments_per_page = $field->getSetting('per_page');
+
+ if ($total_comments <= $comments_per_page) {
+ // Only one page of comments.
+ $count = 0;
+ }
+ elseif ($field->getSetting('default_mode') == CommentManagerInterface::COMMENT_MODE_FLAT) {
+ // Flat comments.
+ $count = $total_comments - $new_comments;
+ }
+ else {
+ // Threaded comments.
+
+ // 1. Find all the threads with a new comment.
+ $unread_threads_query = $this->database->select('comment_field_data', 'comment')
+ ->fields('comment', ['thread'])
+ ->condition('entity_id', $entity->id())
+ ->condition('entity_type', $entity->getEntityTypeId())
+ ->condition('field_name', $field_name)
+ ->condition('status', CommentInterface::PUBLISHED)
+ ->condition('default_langcode', 1)
+ ->orderBy('created', 'DESC')
+ ->orderBy('cid', 'DESC')
+ ->range(0, $new_comments);
+
+ // 2. Find the first thread.
+ $first_thread_query = $this->database->select($unread_threads_query, 'thread');
+ $first_thread_query->addExpression('SUBSTRING(thread, 1, (LENGTH(thread) - 1))', 'torder');
+ $first_thread = $first_thread_query
+ ->fields('thread', ['thread'])
+ ->orderBy('torder')
+ ->range(0, 1)
+ ->execute()
+ ->fetchField();
+
+ // Remove the final '/'.
+ $first_thread = substr($first_thread, 0, -1);
+
+ // Find the number of the first comment of the first unread thread.
+ $count = $this->database->query('SELECT COUNT(*) FROM {comment_field_data} WHERE entity_id = :entity_id
+ AND entity_type = :entity_type
+ AND field_name = :field_name
+ AND status = :status
+ AND SUBSTRING(thread, 1, (LENGTH(thread) - 1)) < :thread
+ AND default_langcode = 1', [
+ ':status' => CommentInterface::PUBLISHED,
+ ':entity_id' => $entity->id(),
+ ':field_name' => $field_name,
+ ':entity_type' => $entity->getEntityTypeId(),
+ ':thread' => $first_thread,
+ ])->fetchField();
+ }
+
+ return $comments_per_page > 0 ? (int) ($count / $comments_per_page) : 0;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getChildCids(array $comments) {
+ return $this->database->select('comment_field_data', 'c')
+ ->fields('c', ['cid'])
+ ->condition('pid', array_keys($comments), 'IN')
+ ->condition('default_langcode', 1)
+ ->execute()
+ ->fetchCol();
+ }
+
+ /**
+ * {@inheritdoc}
+ *
+ * To display threaded comments in the correct order we keep a 'thread' field
+ * and order by that value. This field keeps this data in
+ * a way which is easy to update and convenient to use.
+ *
+ * A "thread" value starts at "1". If we add a child (A) to this comment,
+ * we assign it a "thread" = "1.1". A child of (A) will have "1.1.1". Next
+ * brother of (A) will get "1.2". Next brother of the parent of (A) will get
+ * "2" and so on.
+ *
+ * First of all note that the thread field stores the depth of the comment:
+ * depth 0 will be "X", depth 1 "X.X", depth 2 "X.X.X", etc.
+ *
+ * Now to get the ordering right, consider this example:
+ *
+ * 1
+ * 1.1
+ * 1.1.1
+ * 1.2
+ * 2
+ *
+ * If we "ORDER BY thread ASC" we get the above result, and this is the
+ * natural order sorted by time. However, if we "ORDER BY thread DESC"
+ * we get:
+ *
+ * 2
+ * 1.2
+ * 1.1.1
+ * 1.1
+ * 1
+ *
+ * Clearly, this is not a natural way to see a thread, and users will get
+ * confused. The natural order to show a thread by time desc would be:
+ *
+ * 2
+ * 1
+ * 1.2
+ * 1.1
+ * 1.1.1
+ *
+ * which is what we already did before the standard pager patch. To achieve
+ * this we simply add a "/" at the end of each "thread" value. This way, the
+ * thread fields will look like this:
+ *
+ * 1/
+ * 1.1/
+ * 1.1.1/
+ * 1.2/
+ * 2/
+ *
+ * we add "/" since this char is, in ASCII, higher than every number, so if
+ * now we "ORDER BY thread DESC" we get the correct order. However this would
+ * spoil the reverse ordering, "ORDER BY thread ASC" -- here, we do not need
+ * to consider the trailing "/" so we use a substring only.
+ */
+ public function loadThread(EntityInterface $entity, $field_name, $mode, $comments_per_page = 0, $pager_id = 0) {
+ $query = $this->database->select('comment_field_data', 'c');
+ $query->addField('c', 'cid');
+ $query
+ ->condition('c.entity_id', $entity->id())
+ ->condition('c.entity_type', $entity->getEntityTypeId())
+ ->condition('c.field_name', $field_name)
+ ->condition('c.default_langcode', 1)
+ ->addTag('entity_access')
+ ->addTag('comment_filter')
+ ->addMetaData('base_table', 'comment')
+ ->addMetaData('entity', $entity)
+ ->addMetaData('field_name', $field_name);
+
+ if ($comments_per_page) {
+ $query = $query->extend('Drupal\Core\Database\Query\PagerSelectExtender')
+ ->limit($comments_per_page);
+ if ($pager_id) {
+ $query->element($pager_id);
+ }
+
+ $count_query = $this->database->select('comment_field_data', 'c');
+ $count_query->addExpression('COUNT(*)');
+ $count_query
+ ->condition('c.entity_id', $entity->id())
+ ->condition('c.entity_type', $entity->getEntityTypeId())
+ ->condition('c.field_name', $field_name)
+ ->condition('c.default_langcode', 1)
+ ->addTag('entity_access')
+ ->addTag('comment_filter')
+ ->addMetaData('base_table', 'comment')
+ ->addMetaData('entity', $entity)
+ ->addMetaData('field_name', $field_name);
+ $query->setCountQuery($count_query);
+ }
+
+ if (!$this->currentUser->hasPermission('administer comments')) {
+ $query->condition('c.status', CommentInterface::PUBLISHED);
+ if ($comments_per_page) {
+ $count_query->condition('c.status', CommentInterface::PUBLISHED);
+ }
+ }
+ if ($mode == CommentManagerInterface::COMMENT_MODE_FLAT) {
+ $query->orderBy('c.cid', 'ASC');
+ }
+ else {
+ // See comment above. Analysis reveals that this doesn't cost too
+ // much. It scales much much better than having the whole comment
+ // structure.
+ $query->addExpression('SUBSTRING(c.thread, 1, (LENGTH(c.thread) - 1))', 'torder');
+ $query->orderBy('torder', 'ASC');
+ }
+
+ $cids = $query->execute()->fetchCol();
+
+ $comments = [];
+ if ($cids) {
+ $comments = $this->loadMultiple($cids);
+ }
+
+ return $comments;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getUnapprovedCount() {
+ return $this->database->select('comment_field_data', 'c')
+ ->condition('status', CommentInterface::NOT_PUBLISHED, '=')
+ ->condition('default_langcode', 1)
+ ->countQuery()
+ ->execute()
+ ->fetchField();
+ }
+
+}
projects / yaffs-website / blobdiff