X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=base%2Fdb-interface.lisp;h=9591c9c488495970b06952b87767c692a74e830d;hb=23b76563b25a517ad20f29d6dc5a65c8b958a042;hp=fa07af92eddbd39c67e9cc0ae19a232a4edf6374;hpb=7fd52b8de887a2a328f78bddb6a2fb4230ef2b3a;p=clsql.git

diff --git a/base/db-interface.lisp b/base/db-interface.lisp
index fa07af9..9591c9c 100644
--- a/base/db-interface.lisp
+++ b/base/db-interface.lisp
@@ -113,10 +113,20 @@ returns nil when result-set is finished."))
    "Creates a database, returns T if successfull or signals an error."))
 
 (defgeneric database-probe (connection-spec type)
+  (:method (spec type)
+    (declare (ignore spec))
+    (warn "database-proe not support for database-type ~A." type))
   (:documentation
    "Probes for the existence of a database, returns T if database found or NIL 
 if not found. May signal an error if unable to communicate with database server."))
 
+(defgeneric database-list (connection-spec type)
+  (:method (spec type)
+    (declare (ignore spec))
+    (warn "database-list not support for database-type ~A." type))
+  (:documentation
+   "Lists all databases found for TYPE. May signal an error if unable to communicate with database server."))
+
 (defgeneric database-destroy (connection-spec database)
   (:documentation "Destroys (drops) a database."))
 
@@ -176,6 +186,9 @@ the given lisp type and parameters."))
 (defgeneric database-list-indexes (database &key owner)
   (:documentation "List all indexes in the DATABASE."))
 
+(defgeneric database-list-table-indexes (table database &key owner)
+  (:documentation "List all indexes for a table in the DATABASE."))
+
 (defgeneric database-list-attributes (table database &key owner)
   (:documentation "List all attributes in TABLE."))
 
@@ -191,6 +204,50 @@ the given lisp type and parameters."))
 (defgeneric oid (object)
   (:documentation "Return the unique ID of a database object."))
 
+;;; Database backend capabilities
+
+(defgeneric database-underlying-type (database)
+  (:method (database)
+    (database-type database))
+  (:documentation "Returns the type of the underlying database. For ODBC, needs to query ODBC driver."))
+
+(defgeneric db-type-use-column-on-drop-index? (db-type)
+  (:method (db-type)
+	   (declare (ignore db-type))
+	   nil)
+  (:documentation "NIL [default] if database-type does not use column name on DROP INDEX."))
+
+(defgeneric db-type-has-views? (db-type)
+  (:method (db-type)
+	   (declare (ignore db-type))
+	   ;; SQL92 has views
+	   t)
+  (:documentation "T [default] if database-type supports views."))
+
+(defgeneric db-type-has-subqueries? (db-type)
+  (:method (db-type)
+	   (declare (ignore db-type))
+	   t)
+  (:documentation "T [default] if database-type supports views."))
+
+(defgeneric db-type-has-boolean-where? (db-type)
+  (:method (db-type)
+	   (declare (ignore db-type))
+	   ;; SQL92 has boolean where
+	   t)
+  (:documentation "T [default] if database-type supports boolean WHERE clause, such as 'WHERE MARRIED'."))
+
+(defgeneric db-backend-has-create/destroy-db? (db-type)
+  (:method (db-type)
+	   (declare (ignore db-type))
+	   t)
+  (:documentation "T [default] if backend can destroy and create databases."))
+
+(defgeneric db-type-transaction-capable? (db database)
+  (:method (db database)
+	   (declare (ignore db database))
+	   t)
+  (:documentation "T [default] if database can supports transactions."))
 
 ;;; Large objects support (Marc Battyani)