Portability | portable |
---|---|

Stability | experimental |

Maintainer | Bryan O'Sullivan <bos@serpentine.com> |

Safe Haskell | Safe-Infered |

The `QueryParams`

typeclass, for rendering a collection of
parameters to a SQL query.

Predefined instances are provided for tuples containing up to ten elements.

- class QueryParams a where
- renderParams :: a -> [Action]

# Documentation

class QueryParams a whereSource

A collection type that can be turned into a list of rendering
`Action`

s.

Instances should use the `render`

method of the `Param`

class
to perform conversion of each element of the collection.

renderParams :: a -> [Action]Source

Render a collection of values.

QueryParams () | |

Param a => QueryParams [a] | |

Param a => QueryParams (Only a) | |

(Param a, Param b) => QueryParams (a, b) | |

(Param a, Param b, Param c) => QueryParams (a, b, c) | |

(Param a, Param b, Param c, Param d) => QueryParams (a, b, c, d) | |

(Param a, Param b, Param c, Param d, Param e) => QueryParams (a, b, c, d, e) | |

(Param a, Param b, Param c, Param d, Param e, Param f) => QueryParams (a, b, c, d, e, f) | |

(Param a, Param b, Param c, Param d, Param e, Param f, Param g) => QueryParams (a, b, c, d, e, f, g) | |

(Param a, Param b, Param c, Param d, Param e, Param f, Param g, Param h) => QueryParams (a, b, c, d, e, f, g, h) | |

(Param a, Param b, Param c, Param d, Param e, Param f, Param g, Param h, Param i) => QueryParams (a, b, c, d, e, f, g, h, i) | |

(Param a, Param b, Param c, Param d, Param e, Param f, Param g, Param h, Param i, Param j) => QueryParams (a, b, c, d, e, f, g, h, i, j) |