Kees Jongenburger wrote: > > - I was pondering about an yet another extra field on images 'checksum', > > which would store a checksum on the handle field (a suggestion of > > Daniel). This would make it easy to check if a image was uploaded > > already. > I don't see any benefit. uploading a new image will brake a checksum > wha'ts the point? > scilla uses some sort of key as an authetication string to perform a > tranformation > so <mm:image number="123" template="s(45)"/> will generate something > that hides the conversion command while delaying the transformation. > checksum's can't be used for that either since the transformation must > be finished in order to calculate the checksum.
It has nothing to do with transformations. That issue was tackled, simply using the 'ckey'. The 'checksum' field would be on the 'images' node, which provides you with some way to check if the same image was uploaded already. It is imaginable that a person forgot about wether a certain image was uploaded already or not. In other words this check-sum could be used to search by the byte-array. It could also be used for automatic synchronization of a batch of images (e.g. from a digital camera), and avoid duplicates. One could also try to do this by file-name, but that is less absolute. I didn't say this is extremely useful, and that one cannot do without, but if we are to add new fields to the image-builder, we can as well forget none... And this seems at least a little useful, and in certain situations quite nice to have. Michiel -- Michiel Meeuwissen mihxil' Mediacentrum 140 H'sum [] () +31 (0)35 6772979 nl_NL eo_XX en_US _______________________________________________ Developers mailing list [email protected] http://lists.mmbase.org/mailman/listinfo/developers
