--- /dev/null
+<?php
+
+namespace Drupal\comment;
+
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\Entity\FieldableEntityInterface;
+use Drupal\Core\Entity\EntityChangedInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\State\StateInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\user\EntityOwnerInterface;
+
+class CommentStatistics implements CommentStatisticsInterface {
+
+ /**
+ * The current database connection.
+ *
+ * @var \Drupal\Core\Database\Connection
+ */
+ protected $database;
+
+ /**
+ * The current logged in user.
+ *
+ * @var \Drupal\Core\Session\AccountInterface
+ */
+ protected $currentUser;
+
+ /**
+ * The entity manager service.
+ *
+ * @var \Drupal\Core\Entity\EntityManagerInterface
+ */
+ protected $entityManager;
+
+ /**
+ * The state service.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $state;
+
+ /**
+ * Constructs the CommentStatistics service.
+ *
+ * @param \Drupal\Core\Database\Connection $database
+ * The active database connection.
+ * @param \Drupal\Core\Session\AccountInterface $current_user
+ * The current logged in user.
+ * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+ * The entity manager service.
+ * @param \Drupal\Core\State\StateInterface $state
+ * The state service.
+ */
+ public function __construct(Connection $database, AccountInterface $current_user, EntityManagerInterface $entity_manager, StateInterface $state) {
+ $this->database = $database;
+ $this->currentUser = $current_user;
+ $this->entityManager = $entity_manager;
+ $this->state = $state;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function read($entities, $entity_type, $accurate = TRUE) {
+ $options = $accurate ? [] : ['target' => 'replica'];
+ $stats = $this->database->select('comment_entity_statistics', 'ces', $options)
+ ->fields('ces')
+ ->condition('ces.entity_id', array_keys($entities), 'IN')
+ ->condition('ces.entity_type', $entity_type)
+ ->execute();
+
+ $statistics_records = [];
+ while ($entry = $stats->fetchObject()) {
+ $statistics_records[] = $entry;
+ }
+ return $statistics_records;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function delete(EntityInterface $entity) {
+ $this->database->delete('comment_entity_statistics')
+ ->condition('entity_id', $entity->id())
+ ->condition('entity_type', $entity->getEntityTypeId())
+ ->execute();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function create(FieldableEntityInterface $entity, $fields) {
+ $query = $this->database->insert('comment_entity_statistics')
+ ->fields([
+ 'entity_id',
+ 'entity_type',
+ 'field_name',
+ 'cid',
+ 'last_comment_timestamp',
+ 'last_comment_name',
+ 'last_comment_uid',
+ 'comment_count',
+ ]);
+ foreach ($fields as $field_name => $detail) {
+ // Skip fields that entity does not have.
+ if (!$entity->hasField($field_name)) {
+ continue;
+ }
+ // Get the user ID from the entity if it's set, or default to the
+ // currently logged in user.
+ $last_comment_uid = 0;
+ if ($entity instanceof EntityOwnerInterface) {
+ $last_comment_uid = $entity->getOwnerId();
+ }
+ if (!isset($last_comment_uid)) {
+ // Default to current user when entity does not implement
+ // EntityOwnerInterface or author is not set.
+ $last_comment_uid = $this->currentUser->id();
+ }
+ // Default to REQUEST_TIME when entity does not have a changed property.
+ $last_comment_timestamp = REQUEST_TIME;
+ // @todo Make comment statistics language aware and add some tests. See
+ // https://www.drupal.org/node/2318875
+ if ($entity instanceof EntityChangedInterface) {
+ $last_comment_timestamp = $entity->getChangedTimeAcrossTranslations();
+ }
+ $query->values([
+ 'entity_id' => $entity->id(),
+ 'entity_type' => $entity->getEntityTypeId(),
+ 'field_name' => $field_name,
+ 'cid' => 0,
+ 'last_comment_timestamp' => $last_comment_timestamp,
+ 'last_comment_name' => NULL,
+ 'last_comment_uid' => $last_comment_uid,
+ 'comment_count' => 0,
+ ]);
+ }
+ $query->execute();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getMaximumCount($entity_type) {
+ return $this->database->query('SELECT MAX(comment_count) FROM {comment_entity_statistics} WHERE entity_type = :entity_type', [':entity_type' => $entity_type])->fetchField();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getRankingInfo() {
+ return [
+ 'comments' => [
+ 'title' => t('Number of comments'),
+ 'join' => [
+ 'type' => 'LEFT',
+ 'table' => 'comment_entity_statistics',
+ 'alias' => 'ces',
+ // Default to comment field as this is the most common use case for
+ // nodes.
+ 'on' => "ces.entity_id = i.sid AND ces.entity_type = 'node' AND ces.field_name = 'comment'",
+ ],
+ // Inverse law that maps the highest view count on the site to 1 and 0
+ // to 0. Note that the ROUND here is necessary for PostgreSQL and SQLite
+ // in order to ensure that the :comment_scale argument is treated as
+ // a numeric type, because the PostgreSQL PDO driver sometimes puts
+ // values in as strings instead of numbers in complex expressions like
+ // this.
+ 'score' => '2.0 - 2.0 / (1.0 + ces.comment_count * (ROUND(:comment_scale, 4)))',
+ 'arguments' => [':comment_scale' => \Drupal::state()->get('comment.node_comment_statistics_scale') ?: 0],
+ ],
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function update(CommentInterface $comment) {
+ // Allow bulk updates and inserts to temporarily disable the maintenance of
+ // the {comment_entity_statistics} table.
+ if (!$this->state->get('comment.maintain_entity_statistics')) {
+ return;
+ }
+
+ $query = $this->database->select('comment_field_data', 'c');
+ $query->addExpression('COUNT(cid)');
+ $count = $query->condition('c.entity_id', $comment->getCommentedEntityId())
+ ->condition('c.entity_type', $comment->getCommentedEntityTypeId())
+ ->condition('c.field_name', $comment->getFieldName())
+ ->condition('c.status', CommentInterface::PUBLISHED)
+ ->condition('default_langcode', 1)
+ ->execute()
+ ->fetchField();
+
+ if ($count > 0) {
+ // Comments exist.
+ $last_reply = $this->database->select('comment_field_data', 'c')
+ ->fields('c', ['cid', 'name', 'changed', 'uid'])
+ ->condition('c.entity_id', $comment->getCommentedEntityId())
+ ->condition('c.entity_type', $comment->getCommentedEntityTypeId())
+ ->condition('c.field_name', $comment->getFieldName())
+ ->condition('c.status', CommentInterface::PUBLISHED)
+ ->condition('default_langcode', 1)
+ ->orderBy('c.created', 'DESC')
+ ->range(0, 1)
+ ->execute()
+ ->fetchObject();
+ // Use merge here because entity could be created before comment field.
+ $this->database->merge('comment_entity_statistics')
+ ->fields([
+ 'cid' => $last_reply->cid,
+ 'comment_count' => $count,
+ 'last_comment_timestamp' => $last_reply->changed,
+ 'last_comment_name' => $last_reply->uid ? '' : $last_reply->name,
+ 'last_comment_uid' => $last_reply->uid,
+ ])
+ ->keys([
+ 'entity_id' => $comment->getCommentedEntityId(),
+ 'entity_type' => $comment->getCommentedEntityTypeId(),
+ 'field_name' => $comment->getFieldName(),
+ ])
+ ->execute();
+ }
+ else {
+ // Comments do not exist.
+ $entity = $comment->getCommentedEntity();
+ // Get the user ID from the entity if it's set, or default to the
+ // currently logged in user.
+ if ($entity instanceof EntityOwnerInterface) {
+ $last_comment_uid = $entity->getOwnerId();
+ }
+ if (!isset($last_comment_uid)) {
+ // Default to current user when entity does not implement
+ // EntityOwnerInterface or author is not set.
+ $last_comment_uid = $this->currentUser->id();
+ }
+ $this->database->update('comment_entity_statistics')
+ ->fields([
+ 'cid' => 0,
+ 'comment_count' => 0,
+ // Use the changed date of the entity if it's set, or default to
+ // REQUEST_TIME.
+ 'last_comment_timestamp' => ($entity instanceof EntityChangedInterface) ? $entity->getChangedTimeAcrossTranslations() : REQUEST_TIME,
+ 'last_comment_name' => '',
+ 'last_comment_uid' => $last_comment_uid,
+ ])
+ ->condition('entity_id', $comment->getCommentedEntityId())
+ ->condition('entity_type', $comment->getCommentedEntityTypeId())
+ ->condition('field_name', $comment->getFieldName())
+ ->execute();
+ }
+
+ // Reset the cache of the commented entity so that when the entity is loaded
+ // the next time, the statistics will be loaded again.
+ $this->entityManager->getStorage($comment->getCommentedEntityTypeId())->resetCache([$comment->getCommentedEntityId()]);
+ }
+
+}
projects / yaffs-website / blobdiff