Database.Esqueleto.Internal.ExprParser

This is an internal module. This module may have breaking changes without a corresponding major version bump. If you use this module, please open an issue with your use-case so we can safely support it.

Documentation

data TableAccess

A type representing the access of a table value. In Esqueleto, we get a guarantee that the access will look something like:

escape-char [character] escape-char . escape-char [character] escape-char
            ^^^^^^^^^^^                           ^^^^^^^^^^^
            table name                            column name

Constructors

TableAccess

Fields

• tableAccessTable :: Text
• tableAccessColumn :: Text

Instances

Eq TableAccess

Defined in Database.Esqueleto.Internal.ExprParser

Methods

(==) :: TableAccess -> TableAccess -> Bool

(/=) :: TableAccess -> TableAccess -> Bool

Ord TableAccess

Defined in Database.Esqueleto.Internal.ExprParser

Methods

compare :: TableAccess -> TableAccess -> Ordering

(<) :: TableAccess -> TableAccess -> Bool

(<=) :: TableAccess -> TableAccess -> Bool

(>) :: TableAccess -> TableAccess -> Bool

(>=) :: TableAccess -> TableAccess -> Bool

max :: TableAccess -> TableAccess -> TableAccess

min :: TableAccess -> TableAccess -> TableAccess

Show TableAccess

Defined in Database.Esqueleto.Internal.ExprParser

Methods

showsPrec :: Int -> TableAccess -> ShowS

show :: TableAccess -> String

showList :: [TableAccess] -> ShowS

parseOnExpr :: SqlBackend -> Text -> Either String (Set TableAccess)

Parse a SqlExpr (Value Bool)'s textual representation into a list of TableAccess

mkEscapeChar :: SqlBackend -> Either String Char

This function uses the connEscapeName function in the SqlBackend with an empty identifier to pull out an escape character. This implementation works with postgresql, mysql, and sqlite backends.

type ExprParser a = Char -> Parser a

onExpr :: ExprParser (Set TableAccess)

skipToEscape :: ExprParser ()

parseEscapedIdentifier :: ExprParser [Char]

parseTableAccess :: ExprParser TableAccess

parseEscapedChars :: ExprParser [Char]