Index: openacs-4/packages/cms/sql/postgresql/upgrade/upgrade-4.6-4.6.1.sql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/cms/sql/postgresql/upgrade/upgrade-4.6-4.6.1.sql,v
diff -u -N
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ openacs-4/packages/cms/sql/postgresql/upgrade/upgrade-4.6-4.6.1.sql	17 May 2003 10:22:50 -0000	1.2
@@ -0,0 +1,146 @@
+-- DRB: Needed because workflow views were dependent on the party_approved_member_map
+-- view (which is now a table) and because PG doesn't support CREATE OR REPLACE VIEW.
+
+-- function permission_p
+create or replace function cms_permission__permission_p (integer,integer,varchar)
+returns boolean as '
+declare
+  p_item_id                        alias for $1;  
+  p_holder_id                      alias for $2;  
+  p_privilege                      alias for $3;  
+  v_workflow_count                 integer;       
+  v_task_count                     integer;       
+begin
+      
+    -- Check permission the old-fashioned way first
+    if acs_permission__permission_p (
+         p_item_id, p_holder_id, p_privilege
+       ) = ''f'' 
+    then
+      return ''f'';
+    end if;
+  
+    -- Special case for workflow
+
+    if p_privilege = ''cm_relate'' or 
+       p_privilege = ''cm_write'' or 
+       p_privilege = ''cm_new'' 
+    then
+
+      -- Check if the publishing workflow exists, and if it
+      -- is the only workflow that exists
+      select
+        count(case_id) into v_workflow_count
+      from
+        wf_cases
+      where
+        object_id = p_item_id;
+
+      -- If there are multiple workflows / no workflows, do nothing
+      -- special
+      if v_workflow_count <> 1 then
+        return ''t'';
+      end if;       
+        
+      -- Even if there is a workflow, the user can touch the item if he
+      -- has cm_item_workflow
+      if acs_permission__permission_p (
+         p_item_id, p_holder_id, ''cm_item_workflow''
+       ) = ''t'' 
+      then
+        return ''t'';
+      end if;
+
+      -- Check if the user holds the current task
+      if v_workflow_count = 0 then
+	return ''f'';
+      end if;
+
+      select
+	count(task_id) into v_task_count
+      from
+	wf_user_tasks t, wf_cases c
+      where
+	t.case_id = c.case_id
+      and
+	c.workflow_key = ''publishing_wf''
+      and
+	c.state = ''active''
+      and
+	c.object_id = p_item_id
+      and
+	( t.state = ''enabled'' 
+	  or 
+	    ( t.state = ''started'' and t.holding_user = p_holder_id ))
+      and
+	t.user_id = p_holder_id;
+
+      -- is the user assigned a current task on this item
+      if v_task_count = 0 then
+	return ''f'';
+      end if;      
+
+    end if;
+
+    return ''t'';
+    
+end;' language 'plpgsql';
+
+-- function can_touch
+create or replace function content_workflow__can_touch (integer,integer)
+returns boolean as '
+declare
+  p_item_id                        alias for $1;  
+  p_user_id                        alias for $2;  
+  v_workflow_count                 integer;       
+  v_task_count                     integer;       
+begin
+
+    -- cm_admin has highest precedence
+    if content_permission__permission_p( 
+      p_item_id, p_user_id, ''cm_item_workflow'' ) = ''t'' then
+      return ''t'';
+    end if;
+
+    select
+      count(case_id) into v_workflow_count
+    from
+      wf_cases
+    where
+      object_id = p_item_id;
+
+    -- workflow must exist
+    if v_workflow_count = 0 then
+      return ''f'';
+    end if;
+
+    select
+      count(task_id) into v_task_count
+    from
+      wf_user_tasks t, wf_cases c
+    where
+      t.case_id = c.case_id
+    and
+      c.workflow_key = ''publishing_wf''
+    and
+      c.state = ''active''
+    and
+      c.object_id = p_item_id
+    and
+      ( t.state = ''enabled'' 
+        or 
+          ( t.state = ''started'' and t.holding_user = p_user_id ))
+    and
+      t.user_id = p_user_id;
+
+
+    -- is the user assigned a current task on this item
+    if v_task_count = 0 then
+      return ''f'';
+    else
+      return ''t'';
+    end if;
+
+   
+end;' language 'plpgsql';
+