| Copyright | (c) Ole Krüger 2015-2016 |
|---|---|
| License | BSD3 |
| Maintainer | Ole Krüger <ole@vprsm.de> |
| Safe Haskell | None |
| Language | Haskell2010 |
Database.PostgreSQL.Store.Columns
Description
- data Value
- = Value {
- valueType :: Oid
- valueData :: ByteString
- valueFormat :: Format
- | NullValue
- = Value {
- data ColumnDescription = ColumnDescription {}
- makeColumnDescription :: ColumnDescription -> String
- sanitizeName :: Name -> String
- sanitizeName' :: Name -> String
- identField :: Name -> String
- identField' :: Name -> String
- class Column a where
- pack :: a -> Value
- unpack :: Value -> Maybe a
- describeColumn :: Proxy a -> ColumnDescription
Query parameter or value of a column - see pack on how to generate Values manually but
conveniently.
Constructors
| Value | |
Fields
| |
| NullValue | |
data ColumnDescription Source
Description of a column
Constructors
| ColumnDescription | |
Fields
| |
makeColumnDescription :: ColumnDescription -> String Source
Generate column description in SQL. Think CREATE TABLE.
sanitizeName :: Name -> String Source
Generate the sanitized representation of a name.
sanitizeName' :: Name -> String Source
Similiar to "sanitizeName" but encloses the name in quotes.
identField :: Name -> String Source
Generate the name for the identifying field.
identField' :: Name -> String Source
Similiar to "identField" but encloses the name in quotes.
Column type
Methods
Pack column value.
unpack :: Value -> Maybe a Source
Unpack column value.
describeColumn :: Proxy a -> ColumnDescription Source
Descripe the column type.
Instances