--- /dev/null
+/**
+ * Implements hook_field_storage_query().
+ */
+function {{ machine_name }}_field_storage_query($query) {
+ $groups = array();
+ if ($query->age == FIELD_LOAD_CURRENT) {
+ $tablename_function = '_field_sql_storage_tablename';
+ $id_key = 'entity_id';
+ }
+ else {
+ $tablename_function = '_field_sql_storage_revision_tablename';
+ $id_key = 'revision_id';
+ }
+ $table_aliases = array();
+ // Add tables for the fields used.
+ foreach ($query->fields as $key => $field) {
+ $tablename = $tablename_function($field);
+ // Every field needs a new table.
+ $table_alias = $tablename . $key;
+ $table_aliases[$key] = $table_alias;
+ if ($key) {
+ $select_query->join($tablename, $table_alias, "$table_alias.entity_type = $field_base_table.entity_type AND $table_alias.$id_key = $field_base_table.$id_key");
+ }
+ else {
+ $select_query = db_select($tablename, $table_alias);
+ $select_query->addTag('entity_field_access');
+ $select_query->addMetaData('base_table', $tablename);
+ $select_query->fields($table_alias, array('entity_type', 'entity_id', 'revision_id', 'bundle'));
+ $field_base_table = $table_alias;
+ }
+ if ($field['cardinality'] != 1) {
+ $select_query->distinct();
+ }
+ }
+
+ // Add field conditions.
+ foreach ($query->fieldConditions as $key => $condition) {
+ $table_alias = $table_aliases[$key];
+ $field = $condition['field'];
+ // Add the specified condition.
+ $sql_field = "$table_alias." . _field_sql_storage_columnname($field['field_name'], $condition['column']);
+ $query->addCondition($select_query, $sql_field, $condition);
+ // Add delta / language group conditions.
+ foreach (array('delta', 'language') as $column) {
+ if (isset($condition[$column . '_group'])) {
+ $group_name = $condition[$column . '_group'];
+ if (!isset($groups[$column][$group_name])) {
+ $groups[$column][$group_name] = $table_alias;
+ }
+ else {
+ $select_query->where("$table_alias.$column = " . $groups[$column][$group_name] . ".$column");
+ }
+ }
+ }
+ }
+
+ if (isset($query->deleted)) {
+ $select_query->condition("$field_base_table.deleted", (int) $query->deleted);
+ }
+
+ // Is there a need to sort the query by property?
+ $has_property_order = FALSE;
+ foreach ($query->order as $order) {
+ if ($order['type'] == 'property') {
+ $has_property_order = TRUE;
+ }
+ }
+
+ if ($query->propertyConditions || $has_property_order) {
+ if (empty($query->entityConditions['entity_type']['value'])) {
+ throw new EntityFieldQueryException('Property conditions and orders must have an entity type defined.');
+ }
+ $entity_type = $query->entityConditions['entity_type']['value'];
+ $entity_base_table = _field_sql_storage_query_join_entity($select_query, $entity_type, $field_base_table);
+ $query->entityConditions['entity_type']['operator'] = '=';
+ foreach ($query->propertyConditions as $property_condition) {
+ $query->addCondition($select_query, "$entity_base_table." . $property_condition['column'], $property_condition);
+ }
+ }
+ foreach ($query->entityConditions as $key => $condition) {
+ $query->addCondition($select_query, "$field_base_table.$key", $condition);
+ }
+
+ // Order the query.
+ foreach ($query->order as $order) {
+ if ($order['type'] == 'entity') {
+ $key = $order['specifier'];
+ $select_query->orderBy("$field_base_table.$key", $order['direction']);
+ }
+ elseif ($order['type'] == 'field') {
+ $specifier = $order['specifier'];
+ $field = $specifier['field'];
+ $table_alias = $table_aliases[$specifier['index']];
+ $sql_field = "$table_alias." . _field_sql_storage_columnname($field['field_name'], $specifier['column']);
+ $select_query->orderBy($sql_field, $order['direction']);
+ }
+ elseif ($order['type'] == 'property') {
+ $select_query->orderBy("$entity_base_table." . $order['specifier'], $order['direction']);
+ }
+ }
+
+ return $query->finishQuery($select_query, $id_key);
+}