add reset-cache function

resources/sql/_ds_postgres_cache.sql

@@ -11,3 +11,13 @@ VALUES (:repository-name, :document-id, :version, :data)
 SELECT * FROM :i:cache-table  WHERE "repository" = :repository-name
                                 AND "document" =  :document-id
                                 AND "version" = :version
+
+-- :name reset-document-cache!
+-- :command :execute
+-- :result :raw
+-- :doc creates a new repository table
+DELETE FROM :i:cache-table;
+--;;
+VACUUM (VERBOSE) :i:cache-table;
+--;;
+REINDEX TABLE :i:cache-table;

src/document_storage/postgres/core.clj

@@ -26,6 +26,7 @@
   (create-repository [this repository] "Create a new repository")
   (update-repository [this repository] "Update repository settings")
   (delete-repository [this repository] "Delete a repository")
+  (reset-cache [this] "Clear and reset the document cache")
   (cached-repository? [this repository] "Checks if the repository will use caching")
   (run-query [this query-key params] "Run a Query on a DB-based Storage"))
 
@@ -74,6 +75,8 @@
                        :uuid (get-unique-id "ds")}]
       (conman/query (:queries this) query-key
                     (merge table-names params))))
+  (reset-cache [this]
+    (.run-query this :reset-document-cache! {}))
   (cached-repository? [this repository]
     (let [repo-info (run-query this :get-repository-info
                                {:repository repository})]