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I realized I could have added two
more..
On 25.09.2012 12:02, Svante Schubert wrote:
...
Let me
try to summarize what we already discussed on this topic:
Axiom:
- Each Operation is being defined/specified in our ODF
specification as parametrized XML change. Therefore every
operation is label representing an interoperable traceable,
reproducible document change.
Provisional First Prototype Model:
- Operations are being added upon a stack/queue. Each
operation is working in relation to the document state at
their time. Every operation is simply added upon the stack,
there is a basic time/stack depth relation.
- Operations are able to be moved within this stack. In other
words, it is possible to switch two adjacent operations in
their order.
During a switch position parameters of one of the two
operations might need adaption, whenever one of it is is the
creation/deletion of a preceding sibling or ancestor (being
the other), see presentation
slide 17.
Note: There are logical boundaries, like the deletion, or
manipulation of a component can not be moved in front of the
creation of the very same component.
- Operations are equal to functions and function
composition is applicable, like instead of having two
operations adding a single character, we might have a a single
operation adding these two. Allowing the condensation of the
applied operations. Maintaining the same overall document
change or change info set.
- Should a Operation being removed from the stack, the
simplest view (algorithm) is move the operation to be removed
at the very top of the stack, so it is similar as the
operation had been the last Operation being added to the
document, working on the very last state with - most important
- no side-effects to other operations (those had been resolved
during movement through the stack).
Several of those points are only for understanding purpose and
will certainly not make it into the specification. Those
constructs are only as aid for implementors and will happen behind
the scenes.
Talk to you tomorrow on the call!
Best regards,
Svante
Are
there questions to the draft statements above?
Best regards,
Svante
--
-- -----------------------------------------------------------------
Robin La Fontaine, Director, DeltaXML Ltd "Experts in information change"
T: +44 1684 592 144 E: robin.lafontaine@deltaxml.com
http://www.deltaxml.com
Registered in England 02528681 Reg. Office: Monsell House, WR8 0QN, UK
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