protected function SqlContentEntityStorage::loadFromSharedTables in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php \Drupal\Core\Entity\Sql\SqlContentEntityStorage::loadFromSharedTables()

Loads values for fields stored in the shared data tables.

Parameters

array &$values: Associative array of entities values, keyed on the entity ID or the revision ID.

array &$translations: List of translations, keyed on the entity ID.

bool $load_from_revision: Flag to indicate whether revisions should be loaded or not.

1 call to SqlContentEntityStorage::loadFromSharedTables()

SqlContentEntityStorage::mapFromStorageRecords in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php

Maps from storage records to entity objects, and attaches fields.

File

core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php, line 547

Class

SqlContentEntityStorage

A content entity database storage implementation.

Namespace

Drupal\Core\Entity\Sql

Code

protected function loadFromSharedTables(array &$values, array &$translations, $load_from_revision) {
  $record_key = !$load_from_revision ? $this->idKey : $this->revisionKey;
  if ($this->dataTable) {

    // If a revision table is available, we need all the properties of the
    // latest revision. Otherwise we fall back to the data table.
    $table = $this->revisionDataTable ?: $this->dataTable;
    $alias = $this->revisionDataTable ? 'revision' : 'data';
    $query = $this->database
      ->select($table, $alias, [
      'fetch' => \PDO::FETCH_ASSOC,
    ])
      ->fields($alias)
      ->condition($alias . '.' . $record_key, array_keys($values), 'IN')
      ->orderBy($alias . '.' . $record_key);
    $table_mapping = $this
      ->getTableMapping();
    if ($this->revisionDataTable) {

      // Find revisioned fields that are not entity keys. Exclude the langcode
      // key as the base table holds only the default language.
      $base_fields = array_diff($table_mapping
        ->getFieldNames($this->baseTable), [
        $this->langcodeKey,
      ]);
      $revisioned_fields = array_diff($table_mapping
        ->getFieldNames($this->revisionDataTable), $base_fields);

      // Find fields that are not revisioned or entity keys. Data fields have
      // the same value regardless of entity revision.
      $data_fields = array_diff($table_mapping
        ->getFieldNames($this->dataTable), $revisioned_fields, $base_fields);

      // If there are no data fields then only revisioned fields are needed
      // else both data fields and revisioned fields are needed to map the
      // entity values.
      $all_fields = $revisioned_fields;
      if ($data_fields) {
        $all_fields = array_merge($revisioned_fields, $data_fields);
        $query
          ->leftJoin($this->dataTable, 'data', "(revision.{$this->idKey} = data.{$this->idKey} and revision.{$this->langcodeKey} = data.{$this->langcodeKey})");
        $column_names = [];

        // Some fields can have more then one columns in the data table so
        // column names are needed.
        foreach ($data_fields as $data_field) {

          // \Drupal\Core\Entity\Sql\TableMappingInterface::getColumnNames()
          // returns an array keyed by property names so remove the keys
          // before array_merge() to avoid losing data with fields having the
          // same columns i.e. value.
          $column_names = array_merge($column_names, array_values($table_mapping
            ->getColumnNames($data_field)));
        }
        $query
          ->fields('data', $column_names);
      }

      // Get the revision IDs.
      $revision_ids = [];
      foreach ($values as $entity_values) {
        $revision_ids[] = $entity_values[$this->revisionKey][LanguageInterface::LANGCODE_DEFAULT];
      }
      $query
        ->condition('revision.' . $this->revisionKey, $revision_ids, 'IN');
    }
    else {
      $all_fields = $table_mapping
        ->getFieldNames($this->dataTable);
    }
    $result = $query
      ->execute();
    foreach ($result as $row) {
      $id = $row[$record_key];

      // Field values in default language are stored with
      // LanguageInterface::LANGCODE_DEFAULT as key.
      $langcode = empty($row[$this->defaultLangcodeKey]) ? $row[$this->langcodeKey] : LanguageInterface::LANGCODE_DEFAULT;
      $translations[$id][$langcode] = TRUE;
      foreach ($all_fields as $field_name) {
        $storage_definition = $this->fieldStorageDefinitions[$field_name];
        $definition_columns = $storage_definition
          ->getColumns();
        $columns = $table_mapping
          ->getColumnNames($field_name);

        // Do not key single-column fields by property name.
        if (count($columns) == 1) {
          $column_name = reset($columns);
          $column_attributes = $definition_columns[key($columns)];
          $values[$id][$field_name][$langcode] = !empty($column_attributes['serialize']) ? unserialize($row[$column_name]) : $row[$column_name];
        }
        else {
          foreach ($columns as $property_name => $column_name) {
            $column_attributes = $definition_columns[$property_name];
            $values[$id][$field_name][$langcode][$property_name] = !empty($column_attributes['serialize']) ? unserialize($row[$column_name]) : $row[$column_name];
          }
        }
      }
    }
  }
}