+ /************************************************************************//**
+ * @name Methods to implement
+ * @{
+ */
+
+ /**
+ * Get the cache mode for the data generated by this module. Override
+ * this in the module subclass. For possible return values and other
+ * details about cache modes, see ApiMain::setCacheMode()
+ *
+ * Public caching will only be allowed if *all* the modules that supply
+ * data for a given request return a cache mode of public.
+ *
+ * @param array $params
+ * @return string
+ */
+ public function getCacheMode( $params ) {
+ return 'private';
+ }
+
+ /**
+ * Override this method to request extra fields from the pageSet
+ * using $pageSet->requestField('fieldName')
+ *
+ * Note this only makes sense for 'prop' modules, as 'list' and 'meta'
+ * modules should not be using the pageset.
+ *
+ * @param ApiPageSet $pageSet
+ */
+ public function requestExtraData( $pageSet ) {
+ }
+
+ /**@}*/
+
+ /************************************************************************//**
+ * @name Data access
+ * @{
+ */
+
+ /**
+ * Get the main Query module
+ * @return ApiQuery
+ */
+ public function getQuery() {
+ return $this->mQueryModule;
+ }
+
+ /** @inheritDoc */
+ public function getParent() {
+ return $this->getQuery();
+ }
+
+ /**
+ * Get the Query database connection (read-only)
+ * @return IDatabase
+ */
+ protected function getDB() {
+ if ( is_null( $this->mDb ) ) {
+ $this->mDb = $this->getQuery()->getDB();
+ }
+
+ return $this->mDb;
+ }
+
+ /**
+ * Selects the query database connection with the given name.
+ * See ApiQuery::getNamedDB() for more information
+ * @param string $name Name to assign to the database connection
+ * @param int $db One of the DB_* constants
+ * @param string|string[] $groups Query groups
+ * @return IDatabase
+ */
+ public function selectNamedDB( $name, $db, $groups ) {
+ $this->mDb = $this->getQuery()->getNamedDB( $name, $db, $groups );
+ return $this->mDb;
+ }
+
+ /**
+ * Get the PageSet object to work on
+ * @return ApiPageSet
+ */
+ protected function getPageSet() {
+ return $this->getQuery()->getPageSet();
+ }
+
+ /**@}*/
+
+ /************************************************************************//**
+ * @name Querying
+ * @{
+ */
+