2.4.6 Attribute

Please note: this project is inactive since early 2006

2.4.6 Attribute

Prop. Type Default Comment

name string no default The name is the only mandatory arguments when instanciating a Attribute. Once set, it should not be changed
columnName string externalNameForInternalName(name) ^2.5
type string 'int'
externalType string 'INTEGER'
isClassProperty int 1
isRequired int 0
precision int 0
scale int 0
width int 0
defaultValue None
usedForLocking int 0
displayLabel string ''
doc string '' comment

Prop.	Type	Default	Comment
`name`	`string`	no default	The `name` is the only mandatory arguments when instanciating a `Attribute`. Once set, it should not be changed
`columnName`	`string`	`externalNameForInternalName(name)` ^2.5
`type`	`string`	`'int'`
`externalType`	`string`	`'INTEGER'`
`isClassProperty`	`int`	`1`
`isRequired`	`int`	`0`
`precision`	`int`	`0`
`scale`	`int`	`0`
`width`	`int`	`0`
`defaultValue`		`None`
`usedForLocking`	`int`	`0`
`displayLabel`	`string`	`''`
`doc`	`string`	`''`	comment

Note: For details about these properties and their meaning, please refer to 2.3.3.

Every attribute can be declared as a plain Attribute object. However, the framework provides convenience subclasses for standard attributes:

ADateTime for mapping dates,
AFloat for mapping floating-point numbers,
AInteger for mapping integers,
and AString for mapping strings.

We now examines those subclasses and their defaults.

Footnotes

...externalNameForInternalName(name) ^2.5: as defined in module Entity, see externalNameForInternalName

Subsections

Comments are welcome: Sebastien Bigaret / Modeling Home Page
Hosted by: