function Tables::addJoin

Overrides Tables::addJoin

File

core/modules/workspaces/src/EntityQuery/Tables.php, line 85

Class

Tables

Alters entity queries to use a workspace revision instead of the default one.

Namespace

Code

protected function addJoin($type, $table, $join_condition, $langcode, $delta = NULL) {
    if ($this->sqlQuery
        ->getMetaData('active_workspace_id')) {
        // The join condition for a shared or dedicated field table is in the form
        // of "%alias.$id_field = $base_table.$id_field". Whenever we join a field
        // table we have to check:
        // 1) if $base_table is of an entity type that can belong to a workspace;
        // 2) if $id_field is the revision key of that entity type or the special
        // 'revision_id' string used when joining dedicated field tables.
        // If those two conditions are met, we have to update the join condition
        // to also look for a possible workspace-specific revision using COALESCE.
        $condition_parts = explode(' = ', $join_condition);
        list($base_table, $id_field) = explode('.', $condition_parts[1]);
        if (isset($this->baseTablesEntityType[$base_table])) {
            $entity_type_id = $this->baseTablesEntityType[$base_table];
            $revision_key = $this->entityTypeManager
                ->getActiveDefinition($entity_type_id)
                ->getKey('revision');
            if ($id_field === $revision_key || $id_field === 'revision_id') {
                $workspace_association_table = $this->contentWorkspaceTables[$base_table];
                $join_condition = "{$condition_parts[0]} = COALESCE({$workspace_association_table}.target_entity_revision_id, {$condition_parts[1]})";
            }
        }
    }
    return parent::addJoin($type, $table, $join_condition, $langcode, $delta);
}