bazaar.conf.Persistence

Package bazaar :: Module conf :: Class Persistence

[show private | hide private]

Class Persistence

object --+    
         |    
      type --+
             |
            Persistence

Application class metaclass.

Programmer defines application classes with the metaclass. The class is assigned to the database relation. Class name is used as relation name, by default.

Method Summary
	`__new__(self, name, bases, data, relation, sequencer, modname)` Create application class. (Static method)
	`addColumn(self, attr, col, vcls, link, vcol, vattr, update)` Add attribute description to persistent application class.
	`getColumns(self)` Return list of all defined columns including inherited.
Inherited from type
	`__call__(x, ...)` x.__call__(...) <==> x(...)
	`__cmp__(x, y)` x.__cmp__(y) <==> cmp(x,y)
	`__delattr__(...)` x.__delattr__('name') <==> del x.name
	`__getattribute__(...)` x.__getattribute__('name') <==> x.name
	`__hash__(x)` x.__hash__() <==> hash(x)
	`__repr__(x)` x.__repr__() <==> repr(x)
	`__setattr__(...)` x.__setattr__('name', value) <==> x.name = value
list of immediate subclasses	`__subclasses__()` __subclasses__() -> list of immediate subclasses
list	`mro()` return a type's method resolution order
Inherited from object
	`__init__(...)` x.__init__(...) initializes x; see x.__class__.__doc__ for signature
	`__reduce__(...)` helper for pickle
	`__reduce_ex__(...)` helper for pickle
	`__str__(x)` x.__str__() <==> str(x)

Instance Variable Summary
	`cache`: Object cache class.
	`columns`: List of application class attribute descriptions.
	`defaults`: Default values for class attributes.
	`relation`: Database relation name.
	`sequencer`: Name of primary key values generator sequencer.

Class Variable Summary
Inherited from type
`tuple`	`__bases__` = `(<type 'object'>,)`
`int`	`__basicsize__` = 420
`int`	`__dictoffset__` = 132
`int`	`__flags__` = 21995
`int`	`__itemsize__` = 20
`tuple`	`__mro__` = `(<type 'type'>, <type 'object'>)`
`str`	`__name__` = `'type'`
`int`	`__weakrefoffset__` = 184

Instance Method Details

addColumn(self, attr, col=None, vcls=None, link=None, vcol=None, vattr=None, update=True)

Add attribute description to persistent application class.

This way the application class attributes and relationships between application classes are defined.

Parameters:: attr - Application class attribute name.; col - Relation column name (equal to attr by default).; vcls - Class of referenced object(s).; link - Many-to-many link relation name.; vcol - Relation column name of referenced object(s).; vattr - Attribute name of referenced object(s).; update - Used with 1-n associations. If true, then update referenced objects on relationship update, otherwise add appended objects and delete removed objects.

See Also: bazaar.conf.Column

getColumns(self)

Return list of all defined columns including inherited.

Static Method Details

new(self, name, bases=(<class 'bazaar.core.PersistentObject'>,), data=None, relation=None, sequencer=None, modname='bazaar.conf')

Create application class.

Parameters:: relation - Database relation name.; sequencer - Name of primary key values generator sequencer.; modname - Module of the application class, i.e. app.business.

Overrides:: __builtin__.type.__new__

Instance Variable Details

cache

Object cache class.

columns

List of application class attribute descriptions.

defaults

Default values for class attributes.

relation

Database relation name.

sequencer

Name of primary key values generator sequencer.

Generated by Epydoc 2.0 on Sun May 23 19:11:17 2004

http://epydoc.sf.net