I am a SRU newbie myself, so I don't know how this could be achieved
using scan operations and could not find much info on SRU website
As for the wildcards, according to this guide:
rchworldcatquickreference.pdf the symbols should be preceded by at least
3 characters, and therefore clauses like:
... AND srw.dd=*
... AND srw.dd=?.*
... AND srw/dd=###.*
... AND srw/dd=?3.*
do not work and result in the following error:
Not enough chars in truncated term:Truncated words too short(9)
From: Houghton,Andrew [mailto:[log in to unmask]]
Sent: 16 May 2012 11:58
Subject: Re: [CODE4LIB] WorldCat SRU queries - elimination of records
without a DDC no from the result set
I'm not an SRU guru, but is it possible to do a scan and look for a
postings of zero?
On May 16, 2012, at 6:39, "Arash.Joorabchi" <[log in to unmask]>
Srw.dd=* does not work either:
Message: The index [srw.dd] did not include a searchable
I suppose the only option left is to retrieve everything and
filter the results on the client side.
Thanks for your quick reply.
From: Code for Libraries [mailto:[log in to unmask]] On
Behalf Of Mike Taylor
Sent: 16 May 2012 10:43
To: [log in to unmask]
Subject: Re: [CODE4LIB] WorldCat SRU queries - elimination of
records without a DDC no from the result set
There is no standard way in CQL to express "field X is not
Depending on implementations, NOT srw.dd="" might work (but
doesn't in this case). Another possibility is srw.dd=*, but
that may or may not work, and might be appallingly inefficient
does. NOT srw.dd=null will definitely not work: "null" is not a
special word in CQL.
On 16 May 2012 10:32, Arash.Joorabchi <[log in to unmask]>
> Hi all,
> I am sending SRU queries to the WorldCat in the following
> String host =
> String query = "sru?query=srw.kw=\"" + keyword +
> + " AND srw.ln exact \"eng\""
> + " AND srw.mt all \"bks\""
> + " AND srw.nt=\"" + keyword +
> + "&servicelevel=full"
> + "&maximumRecords=100"
> + "&sortKeys=relevance,,0"
> + "&wskey=[wskey]";
> And it is working fine, however I'd like to limit the results
> records that have a DDC number assigned to them, but I don't
> the right way to specify this limit in the query.
> NOT srw.dd=""
> NOT srw.dd=null
> Neither of above work
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