bazaar.conf.Column

Package bazaar :: Module conf :: Class Column

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Class Column

Describes application class attribute.

Application class atribute can be simple attribute or can define association (relationship) between application classes.

When class attribute describes association the vcls is always defined. Depedning on relationship type (1-1, 1-n, m-n, uni-directional, bi-directional) some of the attributes vlink, vcol, vattr are defined, too.

See Also: bazaar.conf.Persistence.addColumn bazaar.assoc

Method Summary
	`__init__(self, attr, col)` Create application class attribute description.

Property Summary
	`is_bidir`
	`is_many`
	`is_many_to_many`
	`is_one_to_many`
	`is_one_to_one`

Instance Variable Summary
	`association`: Association descriptor of given column.
	`attr`: Application class attribute name.
	`col`: Relation column name (equal to `attr` by default).
	`is_bidir` = `bazaar.conf.Column.is_bidir`
	`is_many` = `bazaar.conf.Column.is_many`
	`is_many_to_many` = `bazaar.conf.Column.is_many_to_many`
	`is_one_to_many` = `bazaar.conf.Column.is_one_to_many`
	`is_one_to_one` = `bazaar.conf.Column.is_one_to_one`
	`link`: Many-to-many link relation name.
	`update`: Used with 1-n associations.
	`vattr`: Attribute name of referenced object(s).
	`vcls`: Class of referenced object(s).
	`vcol`: Relation column name of referenced object(s).

Method Details

init(self, attr, col=None)
(Constructor)

Create application class attribute description.

Parameters:: attr - Application class attribute name.; col - Relation column.

Property Details

is_bidir

Get Method:: unknown-807000176(...)

is_many

Get Method:: unknown-807000240(...)

is_many_to_many

Get Method:: unknown-806988784(...)

is_one_to_many

Get Method:: unknown-806985776(...)

is_one_to_one

Get Method:: unknown-806952880(...)

Instance Variable Details

association

Association descriptor of given column.

attr

Application class attribute name.

col

Relation column name (equal to attr by default).

link

Many-to-many link relation name.

update

Used with 1-n associations. If true, then update referenced objects on relationship update, otherwise add appended objects and delete removed objects.

vattr

Attribute name of referenced object(s).

vcls

Class of referenced object(s).

vcol

Relation column name of referenced object(s).

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