Displaying 20 results from an estimated 200 matches similar to: "mutable Query objects"
2005 Jul 20
1
docid type redifine
Hello all.
I need to redefine a docid type (and all dependent types) like this: typedef unsigned long long docid;
I think it would be enough to edit "include/xapian/types.h", but it isn't so.
1) I've added :
string
om_tostring(unsigned long long val)
{
CONVERT_TO_STRING("%llu")
}
in common/utils.{h,cc}
2) In include/enquire.h (line 438) I've found the
2009 Sep 21
1
RODBC : using and passing queries that use " in some arguments
Dear R users,
I am trying to connect R to data that is in a Access Database but I have problem with the construction of queries using special characters.
I am using RODBC package.
The following is working :
> MyQuery<-paste("SELECT first( (DateHeure) ) , avg(NNO3_AT322_OUT_moy) AS Cond FROM Colonne_3 ")
> Col3<-sqlQuery(con, query=MyQuery)
> Col3
2018 Jan 24
0
How to get the serialise score returned in Xapian::KeyMaker->operator().
On Tue, Jan 23, 2018 at 12:55:31AM +0800, 张少华 wrote:
> We realise our score function using PostingSource instead of using
> KeyMaker, we reference your python example and source code of xapian,
> the simple demo is here.
> https://github.com/xiangqianzsh/xapian_leaning/blob/master/postingsource/ExternalWeightPostingSource.h
I'd just put the get_weight() and get_maxweight()
2006 Dec 06
1
Bug and patch for +terms with wildcards
In current Xapian SVN HEAD, there is a bug in the query parser concerned
with the handling of wildcard terms with a "+" prefix. Specifically,
a query such as "+foo* bar" will be parsed by the query parser into
Xapian::Query("bar") if there are no terms in the database which start
"foo". Instead, since the "+" term cannot be matched, I believe
2008 Sep 16
1
Some Questions From the beginner of Xapian
Dear, guys:
I am a beginner of Xapian, when reading the documents, I encountered follow questions.
(1) I see the Xapian::Document has a method
void add_value (Xapian::valueno valueno, const std::string &value)
What's the purpose of this method? Document will related to the terms, but what's the purpose of this?
(2) add_posting method will add term to a documents.
void
2007 Jun 05
1
multiple plot in odfWeave
Hello R users,
I found the odfWeave package to create an odf document. It seems to be a
very nice tool.
So i tried to used it to create a report with multiple plot:
I create an odt file with some code inside:
I connect to a mysql database
I get a list of projects
foreach project I would like to make a plot (a map exactly)
then in a R console I use the odfweave (inFile, outFile) function.
2007 Mar 09
5
higlighting problem
Hi,
I''ve been having a problem getting highlighting to work with aaf.
I have a class defined as follows such:
class Link < ActiveRecord::Base
acts_as_ferret :fields => { :description => { :store => :yes } }
end
I get back the correct results when I do Link.find_by_contents, however,
I''d like to highlight them.
If I do something like iterate through the list of
2018 Jan 22
2
How to get the serialise score returned in Xapian::KeyMaker->operator().
>A possible workaround (and perhaps a better approach) would be to
>set BoolWeight as the weighting scheme, then feed in your score as
>a weight using a PostingSource. Then it's available via get_weight()
>on the MSetIterator object:
>
>https://getting-started-with-xapian.readthedocs.io/en/latest/advanced/postingsource.html
>
>You may find that's faster because
2018 Jun 21
0
Welcome to the "Xapian-discuss" mailing list
Please keep replies on the mailing list — more people can help (and benefit) that way :)
So OP_NEAR looks for its terms close to each other (hence "near"). The window is how far away they can be. Probably the easiest way to play with this is using the NEAR syntax in the query parser. So if you had a plain text document:
I am walking, always walking.
And index it in a very simple
2007 Jan 03
0
[823] trunk/wxruby2/doc/textile: Remove docs for some deprecated classes
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="content-type" content="text/html; charset=utf-8" /><style type="text/css"><!--
#msg dl { border: 1px #006 solid; background: #369; padding:
2025 Jan 28
1
R CMD check says no visible binding for global variable
On 2025-01-28 1:55 p.m., Naresh Gurbuxani wrote:
> Data.frame is returned by SQL query. It does have column names. In the function, I make small changes to some columns.
>
> Something like:
>
> Myquery <- ?SELECT date, price, stock FROM stocktab WHERE stock = ?ABC? AND date > ?2025-01-01?;?
>
> Prices <- dbGetQuery(con, myquery)
> SetDT(Prices)
> Prices[,
2009 Nov 15
1
setting ValueRangeProcessor at runtime
I want to set a variable number and type of ValueRangeProcessors at run time
based on a configuration file. But I seem to be running into (what I think is) a
C++ scope issue.
I tried just a simple test to see if I could add 5 VPs in a loop.
Xapian::QueryParser qparser;
Xapian::Query query;
int vp = 0;
while(vp < 5) {
Xapian::StringValueRangeProcessor sproc(vp++);
2025 Jan 28
1
R CMD check says no visible binding for global variable
This solution worked.
Thanks
Sent from my iPhone
> On Jan 28, 2025, at 3:09?PM, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:
>
> ?On 2025-01-28 1:55 p.m., Naresh Gurbuxani wrote:
>> Data.frame is returned by SQL query. It does have column names. In the function, I make small changes to some columns.
>> Something like:
>> Myquery <- ?SELECT date,
2015 Jul 26
1
Get term from document by position
mple (see attachment).
>
> Attachments get stripped out by the mailing list, so I?ve made a private gist of the two files here: <https://gist.github.com/jaylett/ce8455b37e2b84422346>.
>
> Actually, when I run it I get 0 matches, which would explain why you?re just getting the start of the document. However if I adjust things (match the stemming strategy for TermGenerator to
2010 Aug 13
0
some helpful tips on using RODBC
Hey everyone,
I don't have a question. Instead some helpful advice with things I've
learned from trying to connect 'R' to databases using RODBC.
ROBDC is a very handy tool that, once you have everything fixed up
nicely, is a great way to have scripts run fairly autonomously, safe in the
knowledge that data isn't accidentally messed up. But I was fairly ignorant
2013 Oct 23
2
performance on document.get_data()
I got some performance issue for document.get_data() and
enquire.get_mset(). It costs 35 seconds for matches =
enquire.get_mset(0,200), and 3 seconds for iterating all doc in matches to
get_data. Is't normal? My index contains 30millions documents. I use python
binding to operate xapian. Bellow it's my index structure
# value: 0:date, 1:site
# data: json message which contains: author,
2025 Jan 28
2
R CMD check says no visible binding for global variable
Data.frame is returned by SQL query. It does have column names. In the function, I make small changes to some columns.
Something like:
Myquery <- ?SELECT date, price, stock FROM stocktab WHERE stock = ?ABC? AND date > ?2025-01-01?;?
Prices <- dbGetQuery(con, myquery)
SetDT(Prices)
Prices[, date = as.Date(date)]
R CMD check say ?no visible binding for global variable ?date??
Sent
2011 Mar 07
1
Set Term Frequency for a Query
Hello,
I have a problem when trying to define a query and setting for each term its
"term frequency" with the classical constructor
Xapian::Query<http://xapian.org/docs/apidoc/html/classXapian_1_1Query.html#f396e213df0d8bcffa473a75ebf228d6>(const
std::string &tname_,
2011 Apr 19
0
Merge databases
Dear all,
I try to use the xapian-compact tool to merge several databases. I need to
keep the document ID.
The problem is that xapian-compact is not able to merge databases because of
overlapping "doc ID range". Nevertheless, in my case, a doc ID is always
used for one and only one database.
Is there a (other) clever way to simply and quickly merge databases ?
Regards
2011/3/7
2025 Jan 28
2
R CMD check says no visible binding for global variable
That is an interesting fix Duncan suggested and it sounds now like everything WORKED as intended in data.table except that any checker being used externally is not able to del with things that look like a variable but are actually not a variable currently visible except within a function that is doing deferred evaluation. In this case, it recognizes the raw unevaluated string as being the name of