Hi Leslie, thanks for you answer - that was a helpful explanation.
Best regards Lukas -------------------------------------------------- From: "Leslie P. Polzer" <s...@viridian-project.de> Sent: Wednesday, October 20, 2010 4:00 PM To: "Elephant bugs and development" <elephant-devel@common-lisp.net> Subject: Re: [elephant-devel] using elephant:open-store with relative paths > > Hi Lukas, > >> Here is a little example: >> (asdf:operate 'asdf:load-op :elephant) >> (elephant:defpclass TopicC () ((value :initarg :value :accessor value >> :type >> string)) (:index t)) >> (elephant:open-store '(:BDB >> "/home/lukas/.sbcl/site/isidorus/trunk/src/data_base"))(make-instance >> 'TopicC :value >> "t-1")(make-instance 'TopicC :value >> "t-2")(elephant:get-instances-by-class 'TopicC); >> absolute db path => (#<TOPICC oid:2> #<TOPICC oid:3>); relative db path >> => (#<TOPICC >> oid:2> #<TOPICC oid:3>) >> (elephant:close-store) >> (elephant:open-store '(:BDB >> "/home/lukas/.sbcl/site/isidorus/trunk/src/data_base"))(elephant:get-instances-by-class >> 'TopicC); absolute db path => (#<TOPICC oid:2> #<TOPICC oid:3>); relative >> db path => NIL >> >> Is this a bug or must I use absolute paths for opening a store? > > You don't need to use absolute paths, but you must take care that > your relative paths are converted correctly to absolute paths. > Your Lisp's CL:*DEFAULT-PATHNAME-DEFAULTS* influences this > conversion. > > In your relative path example you're probably just seeing an > empty database, i.e. not the same database as the one you have > worked with before to create the instances. > > If you still need help then please give a full example that > we can reproduce. > > Leslie > > > > _______________________________________________ > elephant-devel site list > elephant-devel@common-lisp.net > http://common-lisp.net/mailman/listinfo/elephant-devel > _______________________________________________ elephant-devel site list elephant-devel@common-lisp.net http://common-lisp.net/mailman/listinfo/elephant-devel
