node.ext.zodb 1.0-beta1

Node Implementation with ZODB persistence

node.ext.zodb is a persistent node implementation for the ZODB.

With node a unified robust tree structure can be build and with this package this structures can be persisted easily.

It provides two implementation types:

• node.ext.zodb.ZODBNode based on persistent.dict.PersistentDict,

• node.ext.zodb.OOBTNode based on BTrees.OOBTree.OOBTree.

Usage

First a open DB connection is needed. This may be a naked ZODB install or in an context of Pyramid or Zope2/ Plone or where ever it makes sense for you.

Once the DB root object or any other contained persistent object is available adding nodes is as simple as so:

>>> from node.ext.zodb import ZODBNode
>>> root['person'] = ZODBNode()
>>> root['person'].attrs['name'] = "Willi"
>>> root['person']['home'] = ZODBNode()
>>> root['person']['home'].attrs['address'] = "Innsbruck, Austria"
>>> root['person']['work'] = ZODBNode()
>>> root['person']['work'].attrs['address'] = "Hall in Tirol, Austria"

Once the transaction is committed all changes are persistent.

For more information on node and its usage please refer to the node documentation.

Source Code

The sources are in a GIT DVCS with its main branches at github.

We’d be happy to see many forks and pull-requests to make it even better.

Contributors

• Robert Niederreiter <[e-mail]>

• Jens Klein <[e-mail]>

History

1.0-beta

• make it work [rnix]

License

Copyright (c) 2012, BlueDynamics Alliance, Austria, Germany, Switzerland All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

• Neither the name of the BlueDynamics Alliance nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY BlueDynamics Alliance AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BlueDynamics Alliance BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.