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a prototype for complex queries over expressions in libsg

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krasimir
2016-04-29 14:06:24 +00:00
parent a6b4212264
commit 3f0fe438cd
4 changed files with 484 additions and 32 deletions
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21
src/runtime/haskell-bind/SG/FFI.hs
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@@ -8,7 +8,10 @@ import GHC.Ptr
import Data.Int
data SgSG
data SgQueryExprResult
data SgTripleResult
data SgQuery
data SgQueryResult
type SgId = Int64
foreign import ccall "sg/sg.h sg_open"
@@ -27,11 +30,20 @@ foreign import ccall "sg/sg.h sg_rollback"
sg_rollback :: Ptr SgSG -> Ptr GuExn -> IO ()
foreign import ccall "sg/sg.h sg_insert_expr"
sg_insert_expr :: Ptr SgSG -> PgfExpr -> Ptr GuExn -> IO SgId
sg_insert_expr :: Ptr SgSG -> PgfExpr -> CInt -> Ptr GuExn -> IO SgId
foreign import ccall "sg/sg.h sg_get_expr"
sg_get_expr :: Ptr SgSG -> SgId -> Ptr GuPool -> Ptr GuExn -> IO PgfExpr
foreign import ccall "sg/sg.h sg_query_expr"
sg_query_expr :: Ptr SgSG -> PgfExpr -> Ptr GuPool -> Ptr GuExn -> IO (Ptr SgQueryExprResult)
foreign import ccall "sg/sg.h sg_query_next"
sg_query_next :: Ptr SgSG -> Ptr SgQueryExprResult -> Ptr SgId -> Ptr GuPool -> Ptr GuExn -> IO PgfExpr
foreign import ccall "sg/sg.h sg_query_close"
sg_query_close :: Ptr SgSG -> Ptr SgQueryExprResult -> Ptr GuExn -> IO ()
foreign import ccall "sg/sg.h sg_update_fts_index"
sg_update_fts_index :: Ptr SgSG -> Ptr PgfPGF -> Ptr GuExn -> IO ()
@@ -53,6 +65,13 @@ foreign import ccall "sg/sg.h sg_triple_result_fetch"
foreign import ccall "sg/sg.h sg_triple_result_close"
sg_triple_result_close :: Ptr SgTripleResult -> Ptr GuExn -> IO ()
foreign import ccall "sg/sg.h sg_prepare_query"
sg_prepare_query :: Ptr SgSG -> CInt -> Ptr PgfExpr -> Ptr GuPool -> Ptr GuExn -> IO (Ptr SgQuery)
foreign import ccall "sg/sg.h sg_query"
sg_query :: Ptr SgSG -> Ptr SgQuery -> Ptr GuExn -> IO (Ptr SgQueryResult)
type SgTriple = Ptr PgfExpr