On 07.09.2011 06:05, Branko Čibej wrote: > What specific questions are we likely to ask about a particular node > revision? The obvious ones are: > > * when was this "thing" created? (-> path@rev) > * when was it deleted? (-> path@rev) > * what is its immediate predecessor? (-> path@rev) > * what are its immediate successors? (-> list of path@rev, includes > copied-to) > * what is the its PATH at REV1? (-> path) > * where did its content come from? (-> list of path@rev, includes > merged-from) > * where did its content go to? (-> list of path@rev, includes merged-to)
Here are some more: * are PATH1@REV1 and PATH2@REV2 the same thing? * is PATH2@REV2 a successor of PATH1@REV1? * ditto for predecessors Note that the first and second questions are not necessarily equivalent. "The same thing" implies there are no copies in the succession from PATH1@REV1 to PATH2@REV2, whereas the answer to the second question would include copies. Incidentally, this is where "branch" and "copy" are fundamentally different: a branch maintains the node identity, a copy creates a new node. -- Brane
