edlp_d8/sites/all/modules/contrib/taxonomy/synonyms/synonyms_search/synonyms_search.module

<?php

/**
 * @file
 * Integrates Synonyms with core Search module.
 */

/**
 * Implements hook_entity_view().
 */
function synonyms_search_entity_view(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display, $view_mode) {
  \Drupal::service('synonyms.behavior.search')->entityView($build, $entity, $display, $view_mode);
}

/**
 * Implements hook_entity_update().
 */
function synonyms_search_entity_update(Drupal\Core\Entity\EntityInterface $entity) {
  if ($entity instanceof \Drupal\Core\Entity\ContentEntityInterface) {
    \Drupal::service('synonyms.behavior.search')->entityMarkForReindex($entity);
  }
}

/**
 * Implements hook_entity_delete().
 */
function synonyms_search_entity_delete(Drupal\Core\Entity\EntityInterface $entity) {
  if ($entity instanceof \Drupal\Core\Entity\ContentEntityInterface) {
    \Drupal::service('synonyms.behavior.search')->entityMarkForReindex($entity);
  }
}

/**
 * Implements hook_ENTITY_TYPE_insert().
 */
function synonyms_search_synonym_insert(Drupal\Core\Entity\EntityInterface $entity) {
  synonyms_search_synonym_reindex($entity);
}

/**
 * Implements hook_ENTITY_TYPE_update().
 */
function synonyms_search_synonym_update(Drupal\Core\Entity\EntityInterface $entity) {
  synonyms_search_synonym_reindex($entity);
}

/**
 * Implements hook_ENTITY_TYPE_delete().
 */
function synonyms_search_synonym_delete(Drupal\Core\Entity\EntityInterface $entity) {
  synonyms_search_synonym_reindex($entity);
}

/**
 * Mark all search index dependent on a given synonym config for reindexing.
 *
 * @param \Drupal\synonyms\SynonymInterface $synonym
 *   Synonym config whose dependent search index should be marked for reindexing
 */
function synonyms_search_synonym_reindex(\Drupal\synonyms\SynonymInterface $synonym) {
  if ($synonym->get('behavior') == 'synonyms.behavior.search') {
    $entity_type = \Drupal::entityTypeManager()->getDefinition($synonym->getProviderPluginInstance()->getPluginDefinition()['controlled_entity_type']);
    $bundle = $synonym->getProviderPluginInstance()->getPluginDefinition()['controlled_bundle'];
    $query = \Drupal::entityQuery($entity_type->id());
    $query->condition($entity_type->getKey('bundle'), $bundle);
    $result = $query->execute();
    \Drupal::service('synonyms.behavior.search')->entityMarkForReindexMultiple(array_values($result), $entity_type->id());
  }
}