Mercurial > urweb
view demo/more/orm.ur @ 1739:c414850f206f
Add support for -boot flag, which allows in-tree execution of Ur/Web
The boot flag rewrites most hardcoded paths to point to the build
directory, and also forces static compilation. This is convenient
for developing Ur/Web, or if you cannot 'sudo make install' Ur/Web.
The following changes were made:
* Header files were moved to include/urweb instead of include;
this lets FFI users point their C_INCLUDE_PATH at this directory
at write <urweb/urweb.h>. For internal Ur/Web executables,
we simply pass -I$PATH/include/urweb as normal.
* Differentiate between LIB and SRCLIB; SRCLIB is Ur and JavaScript
source files, while LIB is compiled products from libtool. For
in-tree compilation these live in different places.
* No longer reference Config for paths; instead use Settings; these
settings can be changed dynamically by Compiler.enableBoot ()
(TODO: add a disableBoot function.)
* config.h is now generated directly in include/urweb/config.h,
for consistency's sake (especially since it gets installed
along with the rest of the headers!)
* All of the autotools build products got updated.
* The linkStatic field in protocols now only contains the name of the
build product, and not the absolute path.
Future users have to be careful not to reference the Settings files
to early, lest they get an old version (this was the source of two
bugs during development of this patch.)
author | Edward Z. Yang <ezyang@mit.edu> |
---|---|
date | Wed, 02 May 2012 17:17:57 -0400 |
parents | e2611b5dafce |
children | 6bc2a8cb3a67 |
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con link = fn col_parent :: (Type * Type) => col_parent.1 -> transaction (option col_parent.2) fun noParent [t ::: Type] (_ : t) : transaction (option unit) = return None con meta = fn (col :: Type, parent :: Type) => { Link : link (col, parent), Inj : sql_injectable col } fun local [t :: Type] (inj : sql_injectable t) : meta (t, unit) = {Link = noParent, Inj = inj} functor Table(M : sig con cols :: {(Type * Type)} val cols : $(map meta cols) constraint [Id] ~ cols val folder : folder cols end) = struct type id = int con fs' = map fst M.cols con fs = [Id = id] ++ fs' type row' = $fs' type row = $fs fun resultsOut q = query q (fn r ls => return (r.T :: ls)) [] fun resultOut q = ro <- oneOrNoRows q; return (Option.mp (fn r => r .T) ro) sequence s table t : fs val inj = _ val id = {Link = fn id => resultOut (SELECT * FROM t WHERE t.Id = {[id]}), Inj = inj} fun ensql [avail ::_] (r : row') : $(map (sql_exp avail [] []) fs') = @map2 [meta] [fst] [fn ts :: (Type * Type) => sql_exp avail [] [] ts.1] (fn [ts] meta v => @sql_inject meta.Inj v) M.folder M.cols r fun create (r : row') = id <- nextval s; dml (insert t ({Id = sql_inject id} ++ ensql [[]] r)); return ({Id = id} ++ r) fun delete r = dml (DELETE FROM t WHERE t.Id = {[r.Id]}) fun save r = dml (update [fs'] (ensql [[T = [Id = int] ++ map fst M.cols]] (r -- #Id)) t (WHERE T.Id = {[r.Id]})) fun lookup id = ro <- oneOrNoRows (SELECT * FROM t WHERE t.Id = {[id]}); return (Option.mp (fn r => r.T) ro) val list = resultsOut (SELECT * FROM t) con col = fn t => {Exp : sql_exp [T = fs] [] [] t, Inj : sql_injectable t} val idCol = {Exp = sql_field [#T] [#Id], Inj = _} con meta' = fn (fs :: {Type}) (col :: Type, parent :: Type) => {Col : {Exp : sql_exp [T = fs] [] [] col, Inj : sql_injectable col}, Parent : $fs -> transaction (option parent)} val cols = @foldR [meta] [fn before => after :: {(Type * Type)} -> [before ~ after] => $(map (meta' (map fst (before ++ after))) before)] (fn [nm :: Name] [ts :: (Type * Type)] [before :: {(Type * Type)}] [[nm] ~ before] (meta : meta ts) (acc : after :: {(Type * Type)} -> [before ~ after] => $(map (meta' (map fst (before ++ after))) before)) [after :: {(Type * Type)}] [[nm = ts] ++ before ~ after] => {nm = {Col = {Exp = sql_field [#T] [nm], Inj = meta.Inj}, Parent = fn r => meta.Link r.nm}} ++ acc [[nm = ts] ++ after]) (fn [after :: {(Type * Type)}] [[] ~ after] => {}) M.folder M.cols [[Id = (id, row)]] ! type filter = sql_exp [T = fs] [] [] bool fun find (f : filter) = resultOut (SELECT * FROM t WHERE {f}) fun search (f : filter) = resultsOut (SELECT * FROM t WHERE {f}) fun bin (b : t ::: Type -> sql_binary t t bool) [t] (c : col t) (v : t) = sql_binary b c.Exp (@sql_inject c.Inj v) val eq = @@bin @@sql_eq val ne = @@bin @@sql_ne val lt = @@bin @@sql_lt val le = @@bin @@sql_le val gt = @@bin @@sql_gt val ge = @@bin @@sql_ge fun bb (b : sql_binary bool bool bool) (f1 : filter) (f2 : filter) = sql_binary b f1 f2 val _and = bb sql_and val or = bb sql_or end