Thank you very much for your suggestion and this is very helpful, I think DataBlip is a great idea. Let us assume that each node of a tree structure is represented as a wave blip and the entire tree will be a wavelet. We just need a UI rendering layer (say a Gadget) that can access the data blip. The curation of the tree will just mimic the blip creating, editing or deleting. In this way, we do not need worry about the conflicts among collaborators as we can leverage built-in wave feature. I think the Google Wave API can transform a tree structure into a wavelet and its blips but I am not sure if there is a way that a UI layer in a Gadget can access and communicate with the blips, Any idea? Thanks, -Guoqian ________________________________
From: [email protected] [mailto:[email protected]] On Behalf Of David Nesting Sent: Wednesday, December 09, 2009 10:31 AM To: [email protected] Subject: Re: [Google Wave APIs] Google Wave Gadget persistence layer On Tue, Dec 8, 2009 at 10:36 AM, Jiang, Guoqian, Ph.D. <[email protected]> wrote: My use case is that I want to reprensent a tree structure in a google wave gadget and a group will work collaboratively on curating the tree structure e.g. editing a node, adding a sub node or deleting a node. Assuming the tree structure is based on a json object, my question is whether there is a persistence layer API to store and restore a json object, You can serialize the JSON to a text string, and store that text string, as Pamela says, but I would not recommend serializing the entire tree in this way. If two people are editing different parts of the tree at the same time, one person's edits could revert the edits done by the other person, if they are made close together. If you can come up with a scheme to represent your tree in as granular a manner as possible, that would work best, possibly by doing something like: ...submitDelta({'tree.0.1.0'}, value) # Sets the first child of the second child of the first child of the tree By doing this, you're reinventing some of what Wave automatically does for blip content. It's a shame there isn't a way to better leverage that (e.g. a DataBlip that you control the mutations to and presentation of). David -- You received this message because you are subscribed to the Google Groups "Google Wave API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-wave-api?hl=en. -- You received this message because you are subscribed to the Google Groups "Google Wave API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-wave-api?hl=en.
