- Env is now created through a smart constructor which does validations.pull/1/head
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{-# LANGUAGE OverloadedStrings #-} |
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{-# LANGUAGE RecordWildCards #-} |
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{-# LANGUAGE GADTs #-} |
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{-# LANGUAGE Rank2Types #-} |
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{-# LANGUAGE StandaloneDeriving #-} |
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{-# LANGUAGE PatternSynonyms #-} |
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module Ringo.Types.Internal where |
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import qualified Data.Text as Text |
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import Data.Map (Map) |
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import Data.Monoid ((<>)) |
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import Data.Text (Text) |
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showColNames :: [Text] -> String |
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showColNames cols = Text.unpack $ "(" <> Text.intercalate ", " cols <> ")" |
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type ColumnName = Text |
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type ColumnType = Text |
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type TableName = Text |
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data Nullable = Null | NotNull deriving (Eq, Enum) |
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instance Show Nullable where |
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show Null = "NULL" |
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show NotNull = "NOT NULL" |
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data Column = Column |
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{ columnName :: !ColumnName |
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, columnType :: !ColumnType |
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, columnNullable :: !Nullable |
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} deriving (Eq) |
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instance Show Column where |
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show Column {..} = "Column " |
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++ Text.unpack columnName ++ " " |
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++ Text.unpack columnType ++ " " |
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++ show columnNullable |
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data TableConstraint = PrimaryKey !ColumnName |
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| UniqueKey ![ColumnName] |
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| ForeignKey !TableName ![(ColumnName, ColumnName)] |
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deriving (Eq) |
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instance Show TableConstraint where |
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show (PrimaryKey col) = "PrimaryKey " ++ Text.unpack col |
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show (UniqueKey cols) = "UniqueKey " ++ showColNames cols |
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show (ForeignKey tName colMap) = "ForeignKey " ++ showColNames (map fst colMap) ++ " " |
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++ Text.unpack tName ++ " " ++ showColNames (map snd colMap) |
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data Table = Table |
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{ tableName :: !TableName |
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, tableColumns :: ![Column] |
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, tableConstraints :: ![TableConstraint] |
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} deriving (Eq) |
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instance Show Table where |
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show Table {..} = |
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unlines $ ("Table " ++ Text.unpack tableName) : map show tableColumns ++ map show tableConstraints |
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data TimeUnit = Second | Minute | Hour | Day | Week |
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deriving (Eq, Enum, Show, Read) |
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timeUnitName :: TimeUnit -> Text |
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timeUnitName = Text.toLower . Text.pack . show |
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timeUnitToSeconds :: TimeUnit -> Int |
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timeUnitToSeconds Second = 1 |
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timeUnitToSeconds Minute = 60 * timeUnitToSeconds Second |
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timeUnitToSeconds Hour = 60 * timeUnitToSeconds Minute |
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timeUnitToSeconds Day = 24 * timeUnitToSeconds Hour |
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timeUnitToSeconds Week = 7 * timeUnitToSeconds Day |
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data Fact = Fact |
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{ factName :: !TableName |
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, factTableName :: !TableName |
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, factTablePersistent :: !Bool |
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, factParentNames :: ![TableName] |
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, factColumns :: ![FactColumn] |
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} deriving (Show) |
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data FCTNone |
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data FCTTargetTable |
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data FCTMaybeSourceColumn |
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data FCTSourceColumn |
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data FactColumnType a where |
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DimTime :: FactColumnType FCTNone |
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NoDimId :: FactColumnType FCTNone |
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TenantId :: FactColumnType FCTNone |
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DimId :: { factColTargetTable :: !TableName } -> FactColumnType FCTTargetTable |
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DimVal :: { factColTargetTable :: !TableName } -> FactColumnType FCTTargetTable |
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FactCount :: { factColMaybeSourceColumn :: !(Maybe ColumnName) } -> FactColumnType FCTMaybeSourceColumn |
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FactCountDistinct :: { factColMaybeSourceColumn :: !(Maybe ColumnName) } -> FactColumnType FCTMaybeSourceColumn |
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FactSum :: { factColSourceColumn :: !ColumnName } -> FactColumnType FCTSourceColumn |
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FactAverage :: { factColSourceColumn :: !ColumnName } -> FactColumnType FCTSourceColumn |
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FactMax :: { factColSourceColumn :: !ColumnName } -> FactColumnType FCTSourceColumn |
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FactMin :: { factColSourceColumn :: !ColumnName } -> FactColumnType FCTSourceColumn |
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deriving instance Show (FactColumnType a) |
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pattern DimTimeV col <- FactColumn col DimTime |
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pattern NoDimIdV col <- FactColumn col NoDimId |
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pattern TenantIdV col <- FactColumn col TenantId |
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pattern DimIdV col <- FactColumn col DimId {..} |
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pattern DimValV col <- FactColumn col DimVal {..} |
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pattern FactCountV col <- FactColumn col FactCount {..} |
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pattern FactCountDistinctV col <- FactColumn col FactCountDistinct {..} |
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pattern FactSumV col <- FactColumn col FactSum {..} |
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pattern FactAverageV col <- FactColumn col FactAverage {..} |
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pattern FactMaxV col <- FactColumn col FactMax {..} |
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pattern FactMinV col <- FactColumn col FactMin {..} |
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data FactColumn = forall a. FactColumn |
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{ factColTargetColumn :: !ColumnName |
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, factColType :: FactColumnType a } |
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deriving instance Show FactColumn |
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factSourceColumnName :: FactColumn -> Maybe ColumnName |
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factSourceColumnName FactColumn {..} = case factColType of |
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DimTime -> Just factColTargetColumn |
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NoDimId -> Just factColTargetColumn |
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TenantId -> Just factColTargetColumn |
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DimId {..} -> Just factColTargetColumn |
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DimVal {..} -> Just factColTargetColumn |
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FactCount {..} -> factColMaybeSourceColumn |
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FactCountDistinct {..} -> factColMaybeSourceColumn |
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FactSum {..} -> Just factColSourceColumn |
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FactAverage {..} -> Just factColSourceColumn |
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FactMax {..} -> Just factColSourceColumn |
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FactMin {..} -> Just factColSourceColumn |
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data Settings = Settings |
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{ settingDimPrefix :: !Text |
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, settingFactPrefix :: !Text |
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, settingTimeUnit :: !TimeUnit |
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, settingAvgCountColumSuffix :: !Text |
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, settingAvgSumColumnSuffix :: !Text |
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, settingDimTableIdColumnName :: !Text |
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, settingDimTableIdColumnType :: !Text |
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, settingFactCountColumnType :: !Text |
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, settingFactCountDistinctErrorRate :: !Double |
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, settingFactInfix :: !Text |
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, settingDependenciesJSONFileName :: !Text |
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, settingFactsJSONFileName :: !Text |
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, settingDimensionJSONFileName :: !Text |
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, settingForeignKeyIdCoalesceValue :: !Int |
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, settingTableNameSuffixTemplate :: !Text |
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} deriving (Eq, Show) |
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defSettings :: Settings |
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defSettings = Settings |
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{ settingDimPrefix = "dim_" |
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, settingFactPrefix = "fact_" |
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, settingTimeUnit = Minute |
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, settingAvgCountColumSuffix = "_count" |
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, settingAvgSumColumnSuffix = "_sum" |
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, settingDimTableIdColumnName = "id" |
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, settingDimTableIdColumnType = "serial" |
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, settingFactCountColumnType = "integer" |
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, settingFactCountDistinctErrorRate = 0.05 |
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, settingFactInfix = "_by_" |
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, settingDependenciesJSONFileName = "dependencies.json" |
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, settingFactsJSONFileName = "facts.json" |
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, settingDimensionJSONFileName = "dimensions.json" |
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, settingForeignKeyIdCoalesceValue = -1 |
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, settingTableNameSuffixTemplate = "{{suff}}" |
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} |
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data ValidationError = MissingTable !TableName |
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| DuplicateTable !TableName |
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| MissingFact !TableName |
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| DuplicateFact !TableName |
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| MissingColumn !TableName !ColumnName |
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| DuplicateColumn !TableName !ColumnName |
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| MissingTimeColumn !TableName |
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| MissingNotNullConstraint !TableName !ColumnName |
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| MissingTypeDefault !Text |
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deriving (Eq, Show) |
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type TypeDefaults = Map Text Text |
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data Env = Env ![Table] ![Fact] !Settings !TypeDefaults |
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data EnvV = EnvV |
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{ envTables :: ![Table] |
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, envFacts :: ![Fact] |
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, envSettings :: !Settings |
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, envTypeDefaults :: !TypeDefaults |
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} deriving (Show) |
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envView :: Env -> EnvV |
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envView (Env tables facts settings typeDefaults) = EnvV tables facts settings typeDefaults |
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data TablePopulationMode = FullPopulation | IncrementalPopulation deriving (Eq, Show) |
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type Dependencies = Map TableName [TableName] |
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