initial version of the autoincrement support for sqlite3 backend

[clsql.git] / sql / generics.lisp

diff --git a/sql/generics.lisp b/sql/generics.lisp
index 860771e862eda4191a3c1d9feba37ab84536fff3..7f276fc196e397a68444c479135949e7ebe929a2 100644 (file)
--- a/sql/generics.lisp
+++ b/sql/generics.lisp
@@ -18,6 +18,11 @@
 
 
 ;; FDML
 
 
 ;; FDML

+(defgeneric choose-database-for-instance (object &optional database)
+  (:documentation "Used by the oodml functions to select which
+ database object to use. Chooses the database associated with the
+ object primarily, falls back to the database provided as an argument
+ or the *DEFAULT-DATABASE*."))

 
 (defgeneric execute-command (expression &key database)
   (:documentation
 
 (defgeneric execute-command (expression &key database)
   (:documentation


@@ -82,7 +87,7 @@ case, a record is created in the appropriate table of DATABASE
 using values from the slot values of OBJECT, and OBJECT becomes
 associated with DATABASE."))
 
 using values from the slot values of OBJECT, and OBJECT becomes
 associated with DATABASE."))
 

-(defgeneric delete-instance-records (object)
+(defgeneric delete-instance-records (object &key database)

   (:documentation
    "Deletes the records represented by OBJECT in the appropriate
 table of the database associated with OBJECT. If OBJECT is not
   (:documentation
    "Deletes the records represented by OBJECT in the appropriate
 table of the database associated with OBJECT. If OBJECT is not


@@ -117,7 +122,7 @@ effects. Methods specialised on particular View Classes can be
 used to specify any operations that need to be made on View
 Classes instances which have been updated in calls to SELECT."))
 
 used to specify any operations that need to be made on View
 Classes instances which have been updated in calls to SELECT."))
 

-(defgeneric update-slot-with-null (instance slotname slotdef)
+(defgeneric update-slot-with-null (instance slotdef)

   (:documentation "Called to update a slot when its column has a NULL
 value.  If nulls are allowed for the column, the slot's value will be
 nil, otherwise its value will be set to the result of calling
   (:documentation "Called to update a slot when its column has a NULL
 value.  If nulls are allowed for the column, the slot's value will be
 nil, otherwise its value will be set to the result of calling


@@ -139,6 +144,27 @@ DATABASE-NULL-VALUE on the type of the slot."))
   )
 (defgeneric read-sql-value  (val type database db-type)
   )
   )
 (defgeneric read-sql-value  (val type database db-type)
   )

+(defgeneric database-add-autoincrement-sequence (class database)
+  (:method (class database) nil)
+  (:documentation "If a database needs to add a sequence for its
+    autoincrement to work, this is where it should go.  Default is
+    that it doesnt so just return nil"))
+(defgeneric database-remove-autoincrement-sequence (class database)
+  (:method (class database) nil)
+  (:documentation "If a database needs to add a sequence for its
+    autoincrement to work, this is where it should go.  Default is
+    that it doesnt so just return nil"))
+(defgeneric auto-increment-sequence-name (class slotdef database)
+  (:documentation "The sequence name to create for this autoincremnt column on this class
+   if returns nil, there is no associated sequence "))
+
+(defmethod auto-increment-sequence-name :around (class slot database)
+  (when (auto-increment-column-p slot database)
+    (call-next-method)))
+
+(defgeneric database-last-auto-increment-id (database table column)
+  )
+

 
 
 ;; Generation of SQL strings from lisp expressions
 
 
 ;; Generation of SQL strings from lisp expressions


@@ -167,3 +193,8 @@ the arguments EXPR and DATABASE."))
 
 (defgeneric database-constraint-statement  (constraints database)
   )
 
 (defgeneric database-constraint-statement  (constraints database)
   )

+
+(defgeneric database-translate-constraint (constraint database)
+  (:documentation "Given a column constraint returns its
+database-specific name. For example, auto-increment constraints can
+have different names in different database engines."))