r8926: add database-create database-destroy database-probe

[clsql.git] / db-postgresql / postgresql-sql.lisp

diff --git a/db-postgresql/postgresql-sql.lisp b/db-postgresql/postgresql-sql.lisp
index 394c0d629d73865d5014dba2ed16aee930b4d13b..76cab66a214f27e70cf4ec8d18cacb7609561945 100644 (file)
--- a/db-postgresql/postgresql-sql.lisp
+++ b/db-postgresql/postgresql-sql.lisp
@@ -93,6 +93,7 @@
     (declare (ignore password options tty))
     (concatenate 'string 
       (etypecase host
+       (null "localhost")
        (pathname (namestring host))
        (string host))
       (when port 
@@ -141,7 +142,7 @@
   (setf (database-conn-ptr database) nil)
   t)
 
-(defmethod database-query (query-expression (database postgresql-database) types)
+(defmethod database-query (query-expression (database postgresql-database) result-types)
   (let ((conn-ptr (database-conn-ptr database)))
     (declare (type pgsql-conn-def conn-ptr))
     (uffi:with-cstring (query-native query-expression)
@@ -158,8 +159,8 @@
                nil)
               (#.pgsql-exec-status-type#tuples-ok
               (let ((num-fields (PQnfields result)))
-                (setq types
-                  (canonicalize-types types num-fields
+                (setq result-types
+                  (canonicalize-types result-types num-fields
                                             result))
                 (loop for tuple-index from 0 below (PQntuples result)
                       collect
@@ -168,7 +169,7 @@
                             (if (zerop (PQgetisnull result tuple-index i))
                                 (convert-raw-field
                                  (PQgetvalue result tuple-index i)
-                                 types i)
+                                 result-types i)
                                 nil)))))
               (t
                (error 'clsql-sql-error
@@ -218,7 +219,7 @@
 
 (defmethod database-query-result-set ((query-expression string)
                                      (database postgresql-database) 
-                                      &key full-set types)
+                                      &key full-set result-types)
   (let ((conn-ptr (database-conn-ptr database)))
     (declare (type pgsql-conn-def conn-ptr))
     (uffi:with-cstring (query-native query-expression)
@@ -237,7 +238,7 @@
                         :num-fields (PQnfields result)
                         :num-tuples (PQntuples result)
                        :types (canonicalize-types 
-                                     types
+                                     result-types
                                      (PQnfields result)
                                      result))))
             (if full-set
@@ -476,28 +477,59 @@
       (concatenate 'string "SELECT LAST_VALUE ('" sequence-name "')")
       database nil)))))
   
+(defmethod database-create (connection-spec (type (eql :postgresql)))
+  (destructuring-bind (host name user password) connection-spec
+    (declare (ignore password))
+    (let ((asdf::*verbose-out* (make-string-output-stream)))
+      (unwind-protect
+          (let* ((status (asdf:run-shell-command
+                          "su -c ~A createdb -h~A ~A"
+                          user
+                          (if host host "localhost")
+                          name))
+                 (result (get-output-stream-string asdf::*verbose-out*)))
+            
+            (if (search "database creation failed: ERROR:" result)
+                (error 'clsql-access-error
+                       :connection-spec connection-spec
+                       :database-type type
+                       :error 
+                       (format nil "database-create failed: ~s" result))
+                t))
+       (close asdf::*verbose-out*)))))
+
+(defmethod database-destroy (connection-spec (type (eql :postgresql)))
+  (destructuring-bind (host name user password) connection-spec
+    (declare (ignore password))
+    (let ((asdf::*verbose-out* (make-string-output-stream)))
+      (unwind-protect
+          (let* ((status (asdf:run-shell-command
+                          "su -c ~A dropdb -h~A ~A"
+                          user 
+                          (if host host "localhost")
+                          name))
+                 (result (get-output-stream-string asdf::*verbose-out*)))
+            
+            (if (search "database removal failed: ERROR:" result)
+                (error 'clsql-access-error
+                       :connection-spec connection-spec
+                       :database-type type
+                       :error 
+                       (format nil "database-destroy failed: ~s" result))
+                t))
+       (close asdf::*verbose-out*)))))
+
+
+(defmethod database-probe (connection-spec (type (eql :postgresql)))
+  (destructuring-bind (host name user password) connection-spec
+    (let ((database (database-connect (list host "template1" user password)
+                                     type)))
+      (unwind-protect
+          (find name (database-query "select datname from pg_database" 
+                                     database :auto)
+                :key #'car :test #'string-equal)
+       (database-disconnect database)))))
 
-;; Functions depending upon high-level CommonSQL classes/functions
-#|
-(defmethod database-output-sql ((expr clsql-sys::sql-typecast-exp) 
-                               (database postgresql-database))
-  (with-slots (clsql-sys::modifier clsql-sys::components)
-    expr
-    (if clsql-sys::modifier
-        (progn
-          (clsql-sys::output-sql clsql-sys::components database)
-          (write-char #\: clsql-sys::*sql-stream*)
-          (write-char #\: clsql-sys::*sql-stream*)
-          (write-string (symbol-name clsql-sys::modifier) 
-                       clsql-sys::*sql-stream*)))))
-
-(defmethod database-output-sql-as-type ((type (eql 'integer)) val
-                                       (database postgresql-database))
-  (when val   ;; typecast it so it uses the indexes
-    (make-instance 'clsql-sys::sql-typecast-exp
-                   :modifier 'int8
-                   :components val)))
-|#
 
 (when (clsql-base-sys:database-type-library-loaded :postgresql)
   (clsql-base-sys:initialize-database-type :database-type :postgresql))