Hello,
I'm new to Elephant.
My computer environment is: FreeBSD 6.2, Elephant 0.9.1, SBCL
1.0.13, BDB 4.5. ( All elephant test cases for BDB are passed. )
I met some problems related to Unicode.
1. Unicode contained in a vector can not be serialized.
This issue is found when I submit a form to hunchentoot, which
uses vector to store the submitted input string instead of simple array.
Following codes illustrate the problem.
(defpclass user ()
((login-name :accessor user-login-name :initarg :login-name
:index t)
(nick-name :accessor user-nick-name :initarg :nick-name :index
t)
(password :accessor user-password :initarg :password)))
(defvar *login-name1* nil)
(setf *login-name1* (make-array 9 :element-type 'character
:adjustable t :fill-pointer 0))
(vector-push #\u5c0f *login-name1*)
(vector-push #\u5c0f *login-name1*)
(vector-push #\u660e *login-name1*)
(make-instance 'user :login-name *login-name1* :nick-name "Richard"
:password "123")
Error message:
---------------------------------------------
The value "小小明" is not of type SIMPLE-STRING.
[Condition of type TYPE-ERROR]
Backtrace:
0: (ELEPHANT-SERIALIZER2::SERIALIZE-TO-UTF16LE #<unavailable
argument> #<unavailable argument>)
1: (ELEPHANT-SERIALIZER2::SERIALIZE-STRING #<unavailable argument>
#<unavailable argument>)
2: (ELEPHANT-SERIALIZER2::SERIALIZE #<unavailable lambda list>)
Changing the vector to simple array can work around it:
(make-instance 'user :login-name (copy-seq *login-name1*) :nick-name
"Richard" :password "123")
Is it a known limitation ?
2. If the number of characters is odd, the Unicode string can not be
used for index,
(get-instance-by-value 'user 'login-name (copy-seq *login-name1*))
=> nil
(get-instance-by-value 'user 'nick-name "Richard")
=> > #<USER oid:5>
If I change *login-name1* to 2, or 4 Unicode characters, the
get-instance-by-value works.
But, if it contains 3 or 5 characters, the get-instance-by-value
always returns nil.
Does anyone meet the similar problem before?
Thanks
Li
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