October 2004 - cl-prevalence-devel@common-lisp.net

[cl-prevalence-devel] Indexes
by Sven Van Caekenberghe 05 Oct '04

05 Oct '04

Hi All, Randall Randall contributed some code to add indexes to managed-prevalence, today I merge his code in CVS head (not yet in the release tarball) Exported functions: index-on drop-index-on find-object-with-slot Comments: The ideas and most code comes from Randall, I added code to drop indexes, added code to add existing objects to newly created indexes, added a fallback for find-object-with-slot in case there is no index, changed the code that checked for unchanged slots so that it conses less. Todo: Since indexing was added to improve performance, I think current the generation of root and index names done each time we access a root or index is too slow (especially conses too much). I have a new scheme of root naming that I am thinking about that might solve this problem. It might also allow for iteration over all current indexes of a class which could be usefull when deleting objects, and might bring back the index->object association instead of the current index->id association which is currently adding another indirection. Sven

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[cl-prevalence-devel] Patches to serialization
by Sven Van Caekenberghe 04 Oct '04

04 Oct '04

Hi all, The following patches were applied to serialization in CVS (not yet the release): 1 bugfix: serialization of an empty string is <string></string> but deserialization of that XML construct was NIL which is not a string we now return an empty string in that case thanks to randall randall 2 added serializable-slots implementation for sbcl thanks to Anthony W. Juckel 3 added code to deal with unbound slots when serializing (noted by anthony juckel) and code to deal with missing slots when deserializing 4 added reset-class-slots 5 now testing xml and sexp serialization seperately, added empty string test thanks to randall randall Sven

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[cl-prevalence-devel] Patch to serialization.lisp for sbcl
by Anthony Juckel 02 Oct '04

02 Oct '04

I was having some problems getting objects to properly serialize when using cl-prevalence, until I found that there was no implementation of serializable-slots for sbcl. This patch contains such an implementation. Also, I've modified it somewhat from the formula followed by the other lisps. Rather than simply returning all slots for the object, I only return those slots which are currently bound for the object. I leave it up to you to decide whether this is a useful addition or not. Anthony W. Juckel

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