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SELECTing arbitrary expressions
author Adam Chlipala <adamc@hcoop.net>
date Thu, 28 Aug 2008 11:17:14 -0400
parents a338da9d82f3
children 82409ef72019
rev   line source
adamc@56 1 type int
adamc@56 2 type float
adamc@56 3 type string
adamc@91 4
adamc@119 5 type unit = {}
adamc@119 6
adamc@186 7 datatype bool = False | True
adamc@186 8
adamc@91 9
adamc@203 10 (** SQL *)
adamc@203 11
adamc@203 12 con sql_table :: {Type} -> Type
adamc@203 13
adamc@204 14 (*** Queries *)
adamc@204 15
adamc@233 16 con sql_query :: {{Type}} -> {Type} -> Type
adamc@233 17 con sql_query1 :: {{Type}} -> {{Type}} -> {Type} -> Type
adamc@223 18 con sql_exp :: {{Type}} -> {{Type}} -> Type -> Type
adamc@204 19
adamc@223 20 con sql_subset :: {{Type}} -> {{Type}} -> Type
adamc@223 21 val sql_subset : keep_drop :: {({Type} * {Type})}
adamc@223 22 -> sql_subset
adamc@223 23 (fold (fn nm => fn fields :: ({Type} * {Type}) => fn acc =>
adamc@223 24 [nm] ~ acc => fields.1 ~ fields.2 =>
adamc@223 25 [nm = fields.1 ++ fields.2] ++ acc) [] keep_drop)
adamc@223 26 (fold (fn nm => fn fields :: ({Type} * {Type}) => fn acc =>
adamc@223 27 [nm] ~ acc =>
adamc@223 28 [nm = fields.1] ++ acc) [] keep_drop)
adamc@223 29 val sql_subset_all : tables :: {{Type}}
adamc@223 30 -> sql_subset tables tables
adamc@223 31
adamc@229 32 val sql_query1 : tables ::: {{Type}}
adamc@224 33 -> grouped ::: {{Type}}
adamc@233 34 -> selectedFields ::: {{Type}}
adamc@233 35 -> selectedExps ::: {Type}
adamc@223 36 -> {From : $(fold (fn nm => fn fields :: {Type} => fn acc =>
adamc@223 37 [nm] ~ acc => [nm = sql_table fields] ++ acc) [] tables),
adamc@223 38 Where : sql_exp tables [] bool,
adamc@224 39 GroupBy : sql_subset tables grouped,
adamc@224 40 Having : sql_exp grouped tables bool,
adamc@233 41 SelectFields : sql_subset grouped selectedFields,
adamc@233 42 SelectExps : $(fold (fn nm => fn t :: Type => fn acc =>
adamc@233 43 [nm] ~ acc => [nm = sql_exp grouped tables t] ++ acc) [] selectedExps) }
adamc@233 44 -> sql_query1 tables selectedFields selectedExps
adamc@229 45
adamc@229 46 type sql_relop
adamc@229 47 val sql_union : sql_relop
adamc@229 48 val sql_intersect : sql_relop
adamc@229 49 val sql_except : sql_relop
adamc@229 50 val sql_relop : sql_relop
adamc@229 51 -> tables1 ::: {{Type}}
adamc@229 52 -> tables2 ::: {{Type}}
adamc@233 53 -> selectedFields ::: {{Type}}
adamc@233 54 -> selectedExps ::: {Type}
adamc@233 55 -> sql_query1 tables1 selectedFields selectedExps
adamc@233 56 -> sql_query1 tables2 selectedFields selectedExps
adamc@233 57 -> sql_query1 selectedFields selectedFields selectedExps
adamc@229 58
adamc@230 59 type sql_direction
adamc@230 60 val sql_asc : sql_direction
adamc@230 61 val sql_desc : sql_direction
adamc@230 62
adamc@230 63 con sql_order_by :: {{Type}} -> Type
adamc@230 64 val sql_order_by_Nil : tables :: {{Type}} -> sql_order_by tables
adamc@230 65 val sql_order_by_Cons : tables ::: {{Type}} -> t ::: Type
adamc@230 66 -> sql_exp tables [] t -> sql_order_by tables
adamc@230 67 -> sql_order_by tables
adamc@230 68
adamc@231 69 type sql_limit
adamc@231 70 val sql_no_limit : sql_limit
adamc@231 71 val sql_limit : int -> sql_limit
adamc@231 72
adamc@232 73 type sql_offset
adamc@232 74 val sql_no_offset : sql_offset
adamc@232 75 val sql_offset : int -> sql_offset
adamc@232 76
adamc@229 77 val sql_query : tables ::: {{Type}}
adamc@233 78 -> selectedFields ::: {{Type}}
adamc@233 79 -> selectedExps ::: {Type}
adamc@233 80 -> {Rows : sql_query1 tables selectedFields selectedExps,
adamc@231 81 OrderBy : sql_order_by tables,
adamc@232 82 Limit : sql_limit,
adamc@232 83 Offset : sql_offset}
adamc@233 84 -> sql_query selectedFields selectedExps
adamc@204 85
adamc@225 86 val sql_field : otherTabs ::: {{Type}} -> otherFields ::: {Type} -> fieldType ::: Type -> agg ::: {{Type}}
adamc@221 87 -> tab :: Name -> field :: Name
adamc@223 88 -> sql_exp ([tab = [field = fieldType] ++ otherFields] ++ otherTabs) agg fieldType
adamc@209 89
adamc@221 90 class sql_injectable
adamc@221 91 val sql_bool : sql_injectable bool
adamc@221 92 val sql_int : sql_injectable int
adamc@221 93 val sql_float : sql_injectable float
adamc@221 94 val sql_string : sql_injectable string
adamc@223 95 val sql_inject : tables ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> t -> sql_injectable t -> sql_exp tables agg t
adamc@209 96
adamc@220 97 con sql_unary :: Type -> Type -> Type
adamc@220 98 val sql_not : sql_unary bool bool
adamc@223 99 val sql_unary : tables ::: {{Type}} -> agg ::: {{Type}} -> arg ::: Type -> res ::: Type
adamc@223 100 -> sql_unary arg res -> sql_exp tables agg arg -> sql_exp tables agg res
adamc@220 101
adamc@220 102 con sql_binary :: Type -> Type -> Type -> Type
adamc@220 103 val sql_and : sql_binary bool bool bool
adamc@220 104 val sql_or : sql_binary bool bool bool
adamc@223 105 val sql_binary : tables ::: {{Type}} -> agg ::: {{Type}} -> arg1 ::: Type -> arg2 ::: Type -> res ::: Type
adamc@223 106 -> sql_binary arg1 arg2 res -> sql_exp tables agg arg1 -> sql_exp tables agg arg2 -> sql_exp tables agg res
adamc@220 107
adamc@219 108 type sql_comparison
adamc@219 109 val sql_eq : sql_comparison
adamc@219 110 val sql_ne : sql_comparison
adamc@219 111 val sql_lt : sql_comparison
adamc@219 112 val sql_le : sql_comparison
adamc@219 113 val sql_gt : sql_comparison
adamc@219 114 val sql_ge : sql_comparison
adamc@219 115 val sql_comparison : sql_comparison
adamc@223 116 -> tables ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> sql_exp tables agg t -> sql_exp tables agg t
adamc@223 117 -> sql_injectable t -> sql_exp tables agg bool
adamc@203 118
adamc@203 119 (** XML *)
adamc@203 120
adamc@139 121 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 122
adamc@91 123
adamc@139 124 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 125 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@104 126 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type} -> attrsGiven ~ attrsAbsent
adamc@139 127 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@139 128 -> useOuter ::: {Type} -> useInner ::: {Type} -> useOuter ~ useInner
adamc@139 129 -> bindOuter ::: {Type} -> bindInner ::: {Type} -> bindOuter ~ bindInner
adamc@104 130 -> $attrsGiven
adamc@139 131 -> tag (attrsGiven ++ attrsAbsent) ctxOuter ctxInner useOuter bindOuter
adamc@139 132 -> xml ctxInner useInner bindInner
adamc@139 133 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 134 val join : ctx ::: {Unit}
adamc@139 135 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@139 136 -> use1 ~ bind1 -> bind1 ~ bind2
adamc@140 137 -> xml ctx use1 bind1
adamc@140 138 -> xml ctx (use1 ++ bind1) bind2
adamc@140 139 -> xml ctx use1 (bind1 ++ bind2)
adamc@148 140 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type} -> bind ::: {Type}
adamc@148 141 -> use1 ~ use2
adamc@148 142 -> xml ctx use1 bind
adamc@148 143 -> xml ctx (use1 ++ use2) bind
adamc@91 144
adamc@110 145 con xhtml = xml [Html]
adamc@139 146 con page = xhtml [] []
adamc@110 147
adamc@204 148 (*** HTML details *)
adamc@204 149
adamc@140 150 con html = [Html]
adamc@140 151 con head = [Head]
adamc@140 152 con body = [Body]
adamc@141 153 con lform = [Body, LForm]
adamc@93 154
adamc@140 155 val head : unit -> tag [] html head [] []
adamc@140 156 val title : unit -> tag [] head [] [] []
adamc@110 157
adamc@140 158 val body : unit -> tag [] html body [] []
adamc@140 159 con bodyTag = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@140 160 -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@141 161 con bodyTagStandalone = fn attrs :: {Type} => ctx ::: {Unit} -> [Body] ~ ctx -> unit
adamc@141 162 -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 163
adamc@141 164 val br : bodyTagStandalone []
adamc@119 165
adamc@140 166 val p : bodyTag []
adamc@140 167 val b : bodyTag []
adamc@140 168 val i : bodyTag []
adamc@140 169 val font : bodyTag [Size = int, Face = string]
adamc@140 170
adamc@140 171 val h1 : bodyTag []
adamc@140 172 val li : bodyTag []
adamc@140 173
adamc@140 174 val a : bodyTag [Link = page]
adamc@140 175
adamc@141 176 val lform : ctx ::: {Unit} -> [Body] ~ ctx -> bind ::: {Type}
adamc@141 177 -> xml lform [] bind
adamc@141 178 -> xml ([Body] ++ ctx) [] []
adamc@153 179 con lformTag = fn ty :: Type => fn inner :: {Unit} => fn attrs :: {Type} =>
adamc@141 180 ctx ::: {Unit} -> [LForm] ~ ctx
adamc@141 181 -> nm :: Name -> unit
adamc@153 182 -> tag attrs ([LForm] ++ ctx) inner [] [nm = ty]
adamc@153 183 val textbox : lformTag string [] []
adamc@155 184 val password : lformTag string [] []
adamc@153 185 val ltextarea : lformTag string [] []
adamc@153 186
adamc@190 187 val checkbox : lformTag bool [] []
adamc@190 188
adamc@153 189 con radio = [Body, Radio]
adamc@153 190 val radio : lformTag string radio []
adamc@153 191 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 192
adamc@154 193 con select = [Select]
adamc@154 194 val lselect : lformTag string select []
adamc@154 195 val loption : unit -> tag [Value = string] select [] [] []
adamc@154 196
adamc@142 197 val submit : ctx ::: {Unit} -> [LForm] ~ ctx
adamc@142 198 -> use ::: {Type} -> unit
adamc@142 199 -> tag [Action = $use -> page] ([LForm] ++ ctx) ([LForm] ++ ctx) use []