Safe Haskell	None
Language	Haskell2010

Preql.Wire.Errors

Description

Errors raised by functions in Preql.Wire

Synopsis

Documentation

Errors that can occur in decoding a single field.

Constructors

UnexpectedNull
ParseFailure Text

Instances details

Eq UnlocatedFieldError Source #
Instance details Defined in Preql.Wire.Errors Methods (==) :: UnlocatedFieldError -> UnlocatedFieldError -> Bool # (/=) :: UnlocatedFieldError -> UnlocatedFieldError -> Bool #
Show UnlocatedFieldError Source #
Instance details Defined in Preql.Wire.Errors Methods showsPrec :: Int -> UnlocatedFieldError -> ShowS # show :: UnlocatedFieldError -> String # showList :: [UnlocatedFieldError] -> ShowS #
ToJSON UnlocatedFieldError Source #
Instance details Defined in Preql.Wire.Errors Methods toJSON :: UnlocatedFieldError -> Value # toEncoding :: UnlocatedFieldError -> Encoding # toJSONList :: [UnlocatedFieldError] -> Value # toEncodingList :: [UnlocatedFieldError] -> Encoding #
FromJSON UnlocatedFieldError Source #
Instance details Defined in Preql.Wire.Errors Methods parseJSON :: Value -> Parser UnlocatedFieldError # parseJSONList :: Value -> Parser [UnlocatedFieldError] #

A decoding error with information about the row & column of the result where it occured.

Constructors

FieldError
Fields errorRow :: Int errorColumn :: Int failure :: UnlocatedFieldError

Instances details

Eq FieldError Source #
Instance details Defined in Preql.Wire.Errors Methods (==) :: FieldError -> FieldError -> Bool # (/=) :: FieldError -> FieldError -> Bool #
Show FieldError Source #
Instance details Defined in Preql.Wire.Errors Methods showsPrec :: Int -> FieldError -> ShowS # show :: FieldError -> String # showList :: [FieldError] -> ShowS #
ToJSON FieldError Source #
Instance details Defined in Preql.Wire.Errors Methods toJSON :: FieldError -> Value # toEncoding :: FieldError -> Encoding # toJSONList :: [FieldError] -> Value # toEncodingList :: [FieldError] -> Encoding #
FromJSON FieldError Source #
Instance details Defined in Preql.Wire.Errors Methods parseJSON :: Value -> Parser FieldError # parseJSONList :: Value -> Parser [FieldError] #
Exception FieldError Source #
Instance details Defined in Preql.Wire.Errors Methods toException :: FieldError -> SomeException # fromException :: SomeException -> Maybe FieldError # displayException :: FieldError -> String #

Constructors

Oid Oid	A Postgres type with a known ID
TypeName Text	A Postgres type which we will need to lookup by name

Instances details

Eq PgType Source #
Instance details Defined in Preql.Wire.Errors Methods (==) :: PgType -> PgType -> Bool # (/=) :: PgType -> PgType -> Bool #
Show PgType Source #
Instance details Defined in Preql.Wire.Errors Methods showsPrec :: Int -> PgType -> ShowS # show :: PgType -> String # showList :: [PgType] -> ShowS #
ToJSON PgType Source #
Instance details Defined in Preql.Wire.Errors Methods toJSON :: PgType -> Value # toEncoding :: PgType -> Encoding # toJSONList :: [PgType] -> Value # toEncodingList :: [PgType] -> Encoding #
FromJSON PgType Source #
Instance details Defined in Preql.Wire.Errors Methods parseJSON :: Value -> Parser PgType # parseJSONList :: Value -> Parser [PgType] #

Constructors

TypeMismatch
Fields expected :: PgType actual :: Oid column :: Int columnName :: Maybe Text

Instances details

Eq TypeMismatch Source #
Instance details Defined in Preql.Wire.Errors Methods (==) :: TypeMismatch -> TypeMismatch -> Bool # (/=) :: TypeMismatch -> TypeMismatch -> Bool #
Show TypeMismatch Source #
Instance details Defined in Preql.Wire.Errors Methods showsPrec :: Int -> TypeMismatch -> ShowS # show :: TypeMismatch -> String # showList :: [TypeMismatch] -> ShowS #
ToJSON TypeMismatch Source #
Instance details Defined in Preql.Wire.Errors Methods toJSON :: TypeMismatch -> Value # toEncoding :: TypeMismatch -> Encoding # toJSONList :: [TypeMismatch] -> Value # toEncodingList :: [TypeMismatch] -> Encoding #
FromJSON TypeMismatch Source #
Instance details Defined in Preql.Wire.Errors Methods parseJSON :: Value -> Parser TypeMismatch # parseJSONList :: Value -> Parser [TypeMismatch] #

Constructors

ConnectionError Text
DecoderError FieldError
PgTypeMismatch [TypeMismatch]

Instances details

Eq QueryError Source #
Instance details Defined in Preql.Wire.Errors Methods (==) :: QueryError -> QueryError -> Bool # (/=) :: QueryError -> QueryError -> Bool #
Show QueryError Source #
Instance details Defined in Preql.Wire.Errors Methods showsPrec :: Int -> QueryError -> ShowS # show :: QueryError -> String # showList :: [QueryError] -> ShowS #
ToJSON QueryError Source #
Instance details Defined in Preql.Wire.Errors Methods toJSON :: QueryError -> Value # toEncoding :: QueryError -> Encoding # toJSONList :: [QueryError] -> Value # toEncodingList :: [QueryError] -> Encoding #
FromJSON QueryError Source #
Instance details Defined in Preql.Wire.Errors Methods parseJSON :: Value -> Parser QueryError # parseJSONList :: Value -> Parser [QueryError] #
Exception QueryError Source #
Instance details Defined in Preql.Wire.Errors Methods toException :: QueryError -> SomeException # fromException :: SomeException -> Maybe QueryError # displayException :: QueryError -> String #