src/Gargantext/Database/NodeNode.hs

   1 {-# LANGUAGE TemplateHaskell #-}
   2 {-# LANGUAGE FlexibleInstances #-}
   3 {-# LANGUAGE MultiParamTypeClasses #-}
   4 {-# LANGUAGE FunctionalDependencies #-}
   5 {-# LANGUAGE Arrows #-}
   6 {-# OPTIONS_GHC -fno-warn-orphans #-}
   7
   8 module Gargantext.Database.NodeNode where
   9
  10 import Prelude
  11 import Data.Maybe (Maybe)
  12 import Data.Profunctor.Product.TH (makeAdaptorAndInstance)
  13 import Control.Lens.TH (makeLensesWith, abbreviatedFields)
  14 import qualified Database.PostgreSQL.Simple as PGS
  15
  16 import Opaleye
  17
  18
  19 data NodeNodePoly node1_id node2_id score
  20                    = NodeNode { nodeNode_node1_id   :: node1_id
  21                               , nodeNode_node2_id   :: node2_id
  22                               , nodeNode_score :: score
  23                               } deriving (Show)
  24
  25 type NodeNodeWrite = NodeNodePoly (Column PGInt4) (Column PGInt4) (Column (Nullable PGFloat8))
  26 type NodeNodeRead  = NodeNodePoly (Column PGInt4) (Column PGInt4) (Column (Nullable PGFloat8))
  27
  28
  29 type NodeNode = NodeNodePoly Int Int (Maybe Double)
  30
  31 $(makeAdaptorAndInstance "pNodeNode" ''NodeNodePoly)
  32 $(makeLensesWith abbreviatedFields   ''NodeNodePoly)
  33
  34
  35 nodeNodeTable :: Table NodeNodeWrite NodeNodeRead
  36 nodeNodeTable  = Table "nodes_nodes" (pNodeNode NodeNode { nodeNode_node1_id = required "node1_id"
  37                                                            , nodeNode_node2_id = required "node2_id"
  38                                                            , nodeNode_score    = required "score"
  39                                                            }
  40                                        )
  41
  42
  43 queryNodeNodeTable :: Query NodeNodeRead
  44 queryNodeNodeTable = queryTable nodeNodeTable
  45
  46
  47 -- | not optimized (get all ngrams without filters)
  48 nodeNodes :: PGS.Connection -> IO [NodeNode]
  49 nodeNodes conn = runQuery conn queryNodeNodeTable
  50
  51 instance QueryRunnerColumnDefault (Nullable PGInt4) Int where
  52     queryRunnerColumnDefault = fieldQueryRunnerColumn
  53
  54 instance QueryRunnerColumnDefault PGFloat8 (Maybe Double) where
  55     queryRunnerColumnDefault = fieldQueryRunnerColumn
  56
  57