terrahs-0.7: A library for GIS Programs in Haskell. Source code Contents Index

TerraHS.Algebras.Base.Attribute

Contents The Attribute type The Attributes class The Values class Operations on Value The Values class The Value type

Description

Module for handling the Attributes

Synopsis

data Attribute = Attr Property class Values v => Attributes a v | a -> v where getName :: a -> String getValue :: a -> v class Values a where toString :: a -> String class Values a where toString :: a -> String data Value = StValue String | DbValue Double | InValue Int | Undefined type Property = (String, Value) getValuebyName :: [Attribute] -> String -> Value

The Attribute type

data Attribute Source

Constructors Attr Property Instances Show Attribute Attributes Attribute Value GeoObjects TeGeoObject ObjectId Attribute Value TeGeometry TePolygon TeLine2D TePoint Double

The Attributes class

class Values v => Attributes a v | a -> v where Source

Methods getName :: a -> String Source getValue :: a -> v Source Instances Attributes Attribute Value Attributes Attribute Value

The Values class

class Values a where Source

Methods toString :: a -> String Source Instances Values Value

Operations on Value

The Values class

class Values a where Source

Methods toString :: a -> String Source Instances Values Value

The Value type

data Value Source

Constructors StValue String DbValue Double InValue Int Undefined Instances Eq Value Num Value Show Value Values Value Attributes Attribute Value GeoObjects TeGeoObject ObjectId Attribute Value TeGeometry TePolygon TeLine2D TePoint Double

type Property = (String, Value) Source

getValuebyName :: [Attribute] -> String -> Value Source

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