On Wed, Mar 21, 2012 at 8:26 PM, Jukka Zitting <jukka.zitt...@gmail.com> wrote: > Hi, > > The MicroKernel interface currently says: > >> supported property types: string, number
that's outdated, it now says: string, number, boolean > > In addition there's explicit support for binary blobs. > > For oak-core (see OAK-33 [1]) we'd need a bit more detailed definition > of the supported value types. A few questions: the microkernel as currently implemented does not interpret property value types, it just stores the value token. > > 1) Are boolean values (the "true" and "false" keywords in JSON) also > supported? It would be nice if they were. yes > > 2) Are null values (the "null" keyword) supported? It would be nice if not. setting a property to null (e.g. ^"foo":null ) removes it (as in JCR). however, adding a node with null valued properties is currently possible. that should probably be fixed. > > 3) Are arrays (i.e. "[" ... "]") supported? If yes, are there > constraints on element types? It would be nice if arrays indeed were > supported. With the restriction that all elements are scalar values of > the same type. it does support arrays but doesn't enforce restrictions. the microkernel should IMO just support the basic json model. restrictions should be handled on a higher level. > > 4) Are there limits on number values? Most notably, can a number > that's larger than Long.MAX_VALUE be stored reliably (as a number)? > Larger than Double.MAX_VALUE? What about things like Double.NaN? Or > weirder, the other 2^51 NaN values allowed by IEEE754? whatever you pass in the commit is stored and returned as-is. as already mentioned, the value is (currently) not interpreted. > > 5) Are there limits on string values? For example, can I expect to > store a string value that's larger than 1MB? Larger than 1GB? the heap is your limit ;) > > 6) Presumably strings are in Unicode. Are characters beyond the BMP > supported? Is it possible for a string value to contain a Unicode > non-character, for example U+FFFF? erm, haven't thought about that. do you think that there could be a problem? cheers stefan > > [1] https://issues.apache.org/jira/browse/OAK-33 > > BR, > > Jukka Zitting
