Bugs item #2474519, was opened at 2008-12-29 10:27
Message generated for change (Comment added) made by tsheyar
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Category: PF/compiler
Group: Pathfinder "stable"
>Status: Closed
Resolution: Fixed
Priority: 5
Private: No
Submitted By: John van Schie (johnvanschie)
Assigned to: Jan Rittinger (tsheyar)
Summary: Effective boolean value of sequence results in an error
Initial Comment:
We use the MonetDB Nov 2008 SP1 server supplied by the Fedora 9 RPM's.
When we execute the following query, which we believe is valid, it results in
the following error:
Query:
element result {
if (distinct-values(exactly-one(doc("bookmarks.xml"))//*)) then 1 else 2
}
Mclient output:
xquery>\</media/disk/querylog
MAPI = mone...@localhost:51240
QUERY = element result {
ERROR = !fatal error: attribute 'item' with type '0x20' not found in environment
It executes without a problem, when we rewrite the query to the following:
Query:
element result {
if (not(empty(distinct-values(exactly-one(doc("bookmarks.xml"))//*)))) then 1
else 2
}
Mclient output:
xquery>\</media/disk/querylog.workaround
<result>1</result>
----------------------------------------------------------------------
>Comment By: Jan Rittinger (tsheyar)
Date: 2009-02-16 15:54
Message:
Test added.
----------------------------------------------------------------------
Comment By: Jan Rittinger (tsheyar)
Date: 2009-02-16 15:40
Message:
BTW: The two queries query something different. The first one returns a
runtime error if there are more than one values and looks at the value to
decide the outcome. The second query returns true if there is 1 or more
resulting values.
----------------------------------------------------------------------
Comment By: Jan Rittinger (tsheyar)
Date: 2009-02-16 15:37
Message:
Fixed in CVS.
----------------------------------------------------------------------
Comment By: Stefan Manegold (stmane)
Date: 2008-12-29 12:07
Message:
With assertions disabled (as in the RPMs), I get the same error:
$ pf /tmp/ebv.SF-2474519-KO.xq >/dev/null
fatal error: attribute 'item' with type '0x20' not found in environment
With assertions enabled (default when compiled from CVS sources), I get:
$ pf /tmp/ebv.SF-2474519-KO.xq
pf:
/ufs/manegold/_/scratch0/Monet/Testing/Stable/source/pathfinder/compiler/algebra/logical.c:1831:
PFla_not: Assertion `PFprop_type_of (n, att) == 0x00000020' failed.
Aborted
With the old / deprecated MPS back-end (cf., `pf -M` / `mclient -g` / '\g'
command on mclient prompt), the query compiles fine:
$ pf -M /tmp/ebv.SF-2474519-KO.xq | wc
718 2994 31177
----------------------------------------------------------------------
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