Bugs item #1763575, was opened at 2007-07-30 15:17
Message generated for change (Comment added) made by stmane
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Category: PF/runtime
Group: Pathfinder 0.18
Status: Pending
Resolution: Fixed
Priority: 5
Private: No
Submitted By: Wouter Alink (vzzzbx)
Assigned to: Wouter Alink (vzzzbx)
Summary: XQ: insert attribute gives ERROR in merged_union
Initial Comment:
(using today's nightly stable build)
shredding the attached document with:
pf:add-doc("/tmp/tmpDoc3.xml","test.xml","test.xml",10)
and afterwards issuing the following two queries:
for $i in doc("test.xml")//file return do insert attribute { "nid" } {
pf:nid($i) } into $i
for $i in doc("test.xml")//*[not(file)] return do insert attribute { "nid" } {
pf:nid($i) } into $i
returns an error:
MAPI = [EMAIL PROTECTED]:50182
QUERY = for $i in doc("test.xml")//*[not(file)] return do insert attribute {
"nid" } { pf:nid($i) } into $i
ERROR = !ERROR: merged_union: tail of first BAT must be sorted.
!ERROR: CMDmerged_union: operation failed.
!ERROR: interpret_params: reverse(param 1): evaluation error.
!ERROR: interpret_params: kdiff(param 1): evaluation error.
!ERROR: interpret_params: access(param 1): evaluation error.
!ERROR: interpret_params: insert(param 1): evaluation error.
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>Comment By: Stefan Manegold (stmane)
Date: 2007-08-02 23:12
Message:
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As usually, we should add a test for this one.
Unless anybody is faster, I'll try to do so tomorrow (CEST).
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Comment By: Peter Boncz (boncz)
Date: 2007-08-02 21:19
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fixed
now the query gives another error stating that a target node exists that
already has a nid attribute.
this is correct, because the second update adds the nid attribute to all
nodes that do ot have a *CHILD* of type file. Examples of such nodes are
all file nodes..
Anyway, I really do appreciate the bug reports. Still a remark. From the
coding patterns these reports express, I deduce some desire to add explicit
'nid' attributes to XML as IDs. I think this is very confusing and should
be forbidden; each note has a native NID; it should not be present
explicitly. I would only use nids as in IDREFs (ie referring to other
nodes).
And of course, you are aware that as of yet, backup/restore in the admin
GUI does not preserve NIDs in updatable documents..
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Comment By: Sjoerd Mullender (sjoerd)
Date: 2007-08-01 15:30
Message:
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I can easily reproduce this on the current Stable.
The problem occurs in the call to merged_union in get_attr_own(). The
first two input BATs need to be sorted in the tail, but aren't.
The way the code works is that the head columns of the ATTR_OWN_PRIVATE
and ATTR_OWN_SHARED BATs need to be sorted (there is a .hmark([EMAIL
PROTECTED]) done on
both), but in this case they aren't.
My question to Peter: is it a bug that those tables are not sorted in
their head columns?
If not, can you fix your code in get_attr_own?
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