clucene-developers — CLucene development-related discussion.

Re: [CLucene-dev] Facing Problem in getting IndexWriter in my Metro App (Windows 8)

[Veit J. <nun...@go...>]

Hi Sansthosh!

2012/7/16 santhosh k <sa...@gm...>:
> Hello Veit,
>
> Thanks for your replay.
>
> I tried with Visual Studio 2010 by creating sample Win32 Application and
> importing CLucene with same functionality. It works fine. I am able to
> create Index Writer with this sample. And unit tests pass onVS2010.
> I tried with VS 2012 RC but I am getting incompatible version and its not
> loading.

What do you mean by "incompatible version"?

> I will try once more and will let you know. Meanwhile please
> suggest me some solution.

Difficult to say without further information. One idea: Does Clucene
compile, when you revert the change you made with the LUCENE_BASE
macro. If I saw it correctly, you added the "virtual"  keyword. But
this influences the behaviour of overwriting methods in subclasses.

Best regards,

Veit

Re: [CLucene-dev] Facing Problem in getting IndexWriter in my Metro App (Windows 8)

[santhosh k <sa...@gm...>]

Hello Veit,

Thanks for your replay.

I tried with Visual Studio 2010 by creating sample Win32 Application and
importing CLucene with same functionality. It works fine. I am able to
create Index Writer with this sample. And unit tests pass onVS2010.
I tried with VS 2012 RC but I am getting incompatible version and its not
loading. I will try once more and will let you know. Meanwhile please
suggest me some solution.

Best Regards,
Santhosh,

On Sun, Jul 15, 2012 at 10:17 PM, Veit Jahns <nun...@go...>wrote:

> Hi Santhosh,
>
> some ideas from the top of my head:
>
> - Do you have this problem also, if you use an older version of Visual
> Studio?
> - What result do you get, if you execute the unit tests of CLucene
> (cl_test)?
>
> Regards,
>
> Veit
>
> 2012/7/13 santhosh k <sa...@gm...>:
> > Hi,
> >
> > Currently I am using CLucene as a search engine in my application. I
> will be
> > creating a indexer also.
> > While building CLucene library with VS2012 RC I modified mem.h as below
> >
> > #define LUCENE_BASE public virtual CL_NS(debug)::LuceneBase
> >
> > This changes I found online in a patch that includes maodifications
> > VoidList.h and VoidMap.h.
> >
> > Now in my application I would like to create new Index Writer using
> > IndexWriter api.
> > I am using it as
> >
> > IndexWriter *writer = _CLNEW IndexWriter(folderpath, analyzer, true);
> >
> > with above code I am getting runtime error R6025 - pure virtual function
> > call.
> >
> > I am not sure about the error and cause for this.
> >
> > I request any can help me to resolve this issue or let me know the cause
> for
> > this solution.
> >
> > Regards,
> > Santhosh
> >
> >
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> >
>
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Re: [CLucene-dev] Facing Problem in getting IndexWriter in my Metro App (Windows 8)

[Veit J. <nun...@go...>]

Hi Santhosh,

some ideas from the top of my head:

- Do you have this problem also, if you use an older version of Visual Studio?
- What result do you get, if you execute the unit tests of CLucene (cl_test)?

Regards,

Veit

2012/7/13 santhosh k <sa...@gm...>:
> Hi,
>
> Currently I am using CLucene as a search engine in my application. I will be
> creating a indexer also.
> While building CLucene library with VS2012 RC I modified mem.h as below
>
> #define LUCENE_BASE public virtual CL_NS(debug)::LuceneBase
>
> This changes I found online in a patch that includes maodifications
> VoidList.h and VoidMap.h.
>
> Now in my application I would like to create new Index Writer using
> IndexWriter api.
> I am using it as
>
> IndexWriter *writer = _CLNEW IndexWriter(folderpath, analyzer, true);
>
> with above code I am getting runtime error R6025 - pure virtual function
> call.
>
> I am not sure about the error and cause for this.
>
> I request any can help me to resolve this issue or let me know the cause for
> this solution.
>
> Regards,
> Santhosh
>
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> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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[CLucene-dev] Facing Problem in getting IndexWriter in my Metro App (Windows 8)

[santhosh k <sa...@gm...>]

Hi,

Currently I am using CLucene as a search engine in my application. I will
be creating a indexer also.
While building CLucene library with VS2012 RC I modified mem.h as below

*#define LUCENE_BASE public virtual CL_NS(debug)::LuceneBase*

This changes I found online in a patch that includes maodifications
VoidList.h and VoidMap.h.

Now in my application I would like to create new Index Writer using *
IndexWriter* api.
I am using it as

*IndexWriter *writer = _CLNEW IndexWriter(folderpath, analyzer, true);*

with above code I am getting runtime error *R6025 - pure virtual function
call*.

I am not sure about the error and cause for this.

I request any can help me to resolve this issue or let me know the cause
for this solution.

Regards,
Santhosh

Re: [CLucene-dev] Finding all the fields used in a query..

[Itamar Syn-H. <it...@co...>]

It looks like you are trying to use Lucene as a database, a document
database to be specific, and it actually isn't really supported out of the
box

Take a look at MongoDB, CouchDB or RavenDB.

On Thu, May 3, 2012 at 10:56 AM, Mike Aubury <mi...@au...> wrote:

> I'm writing some code at the minute and I have two main issues
> outstanding..
>
> 1) I want to aggregate data based on a user defined query - this means
> searching through an index when I have a new record to see if a record
> already exists
>     If it does - I want to update the totals in there with some new value.
>     If it does not exist - I want to create a new document containing my
> totals to store in a secondary index - but only have the fields that are
> used in the query..
>     So - is there any way to traverse the Query to find out what fields
> are used - so I can create a new document which only contains
>     those fields ?
>
> 2) When I pull the data back at the end - I want to be able to order the
> data by these totals - based on some query.
>     So - for example - I might aggregate all the sales by salesman and
> area, then select from that index for a particular area and have it ordered
> by the total sales.
>     If it makes it any clearer - in SQL it would be something like -
> select salesman, area, sum(sales)  GROUP BY 1,2 ORDER BY 3 desc
>     (obviously - I'm not doing salesmen and sales - if I was I'd probably
> use a relational database - but you get the idea)
>
> Any ideas on how to solve these two issues?
>
>
> Many thanks in advance
>
>
> ------------------------------------------------------------------------------
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> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
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>

[CLucene-dev] Finding all the fields used in a query..

[Mike A. <mi...@au...>]

I'm writing some code at the minute and I have two main issues outstanding..

1) I want to aggregate data based on a user defined query - this means
searching through an index when I have a new record to see if a record
already exists
    If it does - I want to update the totals in there with some new value.
    If it does not exist - I want to create a new document containing my
totals to store in a secondary index - but only have the fields that are
used in the query..
    So - is there any way to traverse the Query to find out what fields are
used - so I can create a new document which only contains
    those fields ?

2) When I pull the data back at the end - I want to be able to order the
data by these totals - based on some query.
    So - for example - I might aggregate all the sales by salesman and
area, then select from that index for a particular area and have it ordered
by the total sales.
    If it makes it any clearer - in SQL it would be something like - select
salesman, area, sum(sales)  GROUP BY 1,2 ORDER BY 3 desc
    (obviously - I'm not doing salesmen and sales - if I was I'd probably
use a relational database - but you get the idea)

Any ideas on how to solve these two issues?


Many thanks in advance

[CLucene-dev] [PATCH] Fix for CLMultimap::put and a trivial cleanup

[Catalin I. <iac...@gm...>]

Hello,

Please find attached 2 patches. One is a trivial cleanup so that the
2nd patch can follow the same pattern as the other put functions in
that file without introducing a silly ;;

The second one probably solves a real bug. I discovered this while
compiling Libreoffice with Clang which warns that the v value is
unused in put. So I'm interested in committing this patch since
without it clients like Libreoffice can't compile with -Werror. I'm
not familiar with the code and I've never used CLucene before but I
suppose both patches are correct since they're quite trivial.

In case this is needed for accepting the contribution: patches are
under LGPL or Apache Version 2.0.

Catalin Iacob

Re: [CLucene-dev] Bug in SegmentMerger and IndexWriter

[Šplíchal J. <spl...@to...>]

Hi Ben,

We are using slightly different version but I tested the issue with
sources from origin/master and also from origin/vc6-fixes-working
and the test crashes as described in all the cases - at least in debug version.
But we found the issue when using release version.
I am using VS2005 on Windows 7.

Jiri


From: Ben van Klinken [mailto:bva...@gm...]
Sent: Friday, April 13, 2012 12:50 AM
To: clu...@li...
Subject: Re: [CLucene-dev] Bug in SegmentMerger and IndexWriter

Hi Jiri,

What branch are you using? I just tried compiling and running that test and it ran without any issues

ben
2012/4/12 Šplíchal Jiří <spl...@to...<mailto:spl...@to...>>
Hello,

please find attached TestIndexWriter.cpp extended with one more test that
shows two different bugs:
1) If you leave the test as it is, than it crashes on line 680 when optimizing an index that
was previously empty (all documents were deleted) and then some documents has been added.
We were able to fix this bug, the problem is in SegmentMerger.cpp 769 where
         reader->norms(fi->name, normBuffer.values);
is called with normBuffer.values == NULL.
To prevent this it is sufficient to initialize the normBuffer at the beginning of the method
with length 1.

2) If you uncomment writer->optimize(); on line 660 in the test, than the following call to
writer->close(); crashes. We have not found any solution for this issue where we could be
sure about all consequences. But the problematic method in this case is
bool IndexWriter::flushDocStores()
which intializes a local variable files by calling:
       const std::vector<std::string>& files = docWriter->files();
but the following calls have as side effect modification of this vector in such way
that the application crashes.

Best Regards,
Jiri


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Re: [CLucene-dev] Bug in SegmentMerger and IndexWriter

[Ben v. K. <bva...@gm...>]

Hi Jiri,

What branch are you using? I just tried compiling and running that test and
it ran without any issues

ben

2012/4/12 Šplíchal Jiří <spl...@to...>

> Hello,
>
> please find attached TestIndexWriter.cpp extended with one more test that
> shows two different bugs:
> 1) If you leave the test as it is, than it crashes on line 680 when
> optimizing an index that
> was previously empty (all documents were deleted) and then some documents
> has been added.
> We were able to fix this bug, the problem is in SegmentMerger.cpp 769 where
>          reader->norms(fi->name, normBuffer.values);
> is called with normBuffer.values == NULL.
> To prevent this it is sufficient to initialize the normBuffer at the
> beginning of the method
> with length 1.
>
> 2) If you uncomment writer->optimize(); on line 660 in the test, than the
> following call to
> writer->close(); crashes. We have not found any solution for this issue
> where we could be
> sure about all consequences. But the problematic method in this case is
> bool IndexWriter::flushDocStores()
> which intializes a local variable files by calling:
>        const std::vector<std::string>& files = docWriter->files();
> but the following calls have as side effect modification of this vector in
> such way
> that the application crashes.
>
> Best Regards,
> Jiri
>
>
>
> ------------------------------------------------------------------------------
> For Developers, A Lot Can Happen In A Second.
> Boundary is the first to Know...and Tell You.
> Monitor Your Applications in Ultra-Fine Resolution. Try it FREE!
> http://p.sf.net/sfu/Boundary-d2dvs2
> _______________________________________________
> CLucene-developers mailing list
> CLu...@li...
> https://lists.sourceforge.net/lists/listinfo/clucene-developers
>
>

[CLucene-dev] Bug in SegmentMerger and IndexWriter

[Šplíchal J. <spl...@to...>]

Hello, 

please find attached TestIndexWriter.cpp extended with one more test that
shows two different bugs:
1) If you leave the test as it is, than it crashes on line 680 when optimizing an index that 
was previously empty (all documents were deleted) and then some documents has been added.
We were able to fix this bug, the problem is in SegmentMerger.cpp 769 where 
          reader->norms(fi->name, normBuffer.values);
is called with normBuffer.values == NULL.
To prevent this it is sufficient to initialize the normBuffer at the beginning of the method
with length 1.

2) If you uncomment writer->optimize(); on line 660 in the test, than the following call to 
writer->close(); crashes. We have not found any solution for this issue where we could be 
sure about all consequences. But the problematic method in this case is
bool IndexWriter::flushDocStores()
which intializes a local variable files by calling:
	const std::vector<std::string>& files = docWriter->files();
but the following calls have as side effect modification of this vector in such way
that the application crashes.

Best Regards, 
Jiri 

Re: [CLucene-dev] Does CLucene 32 bits version work on 64 bits windows?

[Veit J. <nun...@go...>]

Hi Ahmed,

the same here. We also use CLucene on 64 bit Windows machines. Up to
now, we didn't face any problems with CLucene crashing.

Best regards,

Veit

2012/3/21 Ahmed <ci7...@gm...>:
> Hi,
> Our application use CLucene and it's quiet stable on 32 bits, but some users
> say that the application crash when they start indexing or search on 64 bits
> (windows 7) machines
> Should we build a 64 bits version? or the isn't in CLucene?
>
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[CLucene-dev] MultiSearch How to?

[Mohammad i. <m.i...@gm...>]

Hi,

I have a problem in searching multiple indexes.
We have two options to do this
*1- using MuliSearcher*
with this option i always get hits from the second index only however i use
MultiSearcher::subSearcher(int32_tn)  to be sure that the hit is from 
the index number (0)
here is a code sample
Searchable*s[3]={newIndexSearcher(firstIndexPath),newIndexSearcher(secondIndexPath()),NULL};
MultiSearcher * searcher  = new MultiSearcher(s);
Hits * hits = searcher->search(query);
for(int i = 0; i < hits->length(); i++){
cout<<searcher->subSearcher(i);
}

The Result is
0
0
1
1

So it means that i have hits from each index, but when i try to get the 
docs i always found that the docs came from the second index!

*2- Using MultiReader*
with this option i couldn't make the app to compile.
here is a code sample
         
lucene::util::Array<IndexReader*>*r=newlucene::util::Array<IndexReader*>(3); 


     r[0]  =  IndexReader::open(firstIndexPath);

     r[1]  =  IndexReader::open(secondIndexPath);

     r[2]  =  NULL;

     MultiReader  *  multiReader  =  new  MultiReader(r);

m_searcher=newIndexSearcher(multiReader);

I always get an error
error: invalid conversion from 'lucene::index::IndexReader*' to 
'unsigned int'

How can I search multiple Indexes?

Sincerely,

-- 
Mohamed Ismail

Re: [CLucene-dev] Does CLucene 32 bits version work on 64 bits windows?

[Ben v. K. <bva...@gm...>]

I use 64 bit all the time, without any problems.

b


On 22 March 2012 08:31, Ahmed <ci7...@gm...> wrote:

>  Hi,
> Our application use CLucene and it's quiet stable on 32 bits, but some
> users say that the application crash when they start indexing or search on
> 64 bits (windows 7) machines
> Should we build a 64 bits version? or the isn't in CLucene?
>
>
> ------------------------------------------------------------------------------
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>
>

[CLucene-dev] Does CLucene 32 bits version work on 64 bits windows?

[Ahmed <ci7...@gm...>]

<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
    <style>body p { margin-bottom: 0cm; margin-top: 0pt; } </style>
  </head>
  <body bidimailui-detected-decoding-type="latin-charset"
    bgcolor="#FFFFFF" text="#000000">
    Hi,<br>
    Our application use CLucene and it's quiet stable on 32 bits, but
    some users say that the application crash when they start indexing
    or search on 64 bits (windows 7) machines<br>
    Should we build a 64 bits version? or the isn't in CLucene?<br>
  </body>
</html>

Re: [CLucene-dev] searchAfter / TopDocs Pagination

[Veit J. <nun...@go...>]

2012/2/28  <du...@id...>:
>> Maybe Lucene++ [1] supports this. It is a port of a later Lucene version
>> by
>> Alan and Ben. We tried once to make this the new CLucene version, but
>> havn't finished it yet.
>
> How stable is Lucene++? Does it just have some unimplemented functionality
> from java lucene or is there other problems?

Sorry for coming back to your question so late. Somehow I thought, I
had already answered it. As far as I know Lucene++ is stable. For
CLucene we wanted it as fast as possible, i.e., reducing the usage of
the shared pointers in Lucene++.

Kind regards,
Veit

Re: [CLucene-dev] help ! - using LanguageBasedAnalyzer/CJKTokenizer returns wrong result

[Veit J. <nun...@go...>]

Hi Vivien,

sorry, it took some time. Maybe this is an encoding issue. What
encoding do your source code files have? I got the same result, when
the encoding is UTF-8. But CLucene works internally with UTF-16 and in
this case handles the string and the query as an UTF-16 encoded
string. Thus, the created index is more or less useless.

But if I transcode the string from UTF-8 to UTF-16 before I put it
into the index, the index looks fine
and I get the correct number of results.

Kind regards,

Veit

[CLucene-dev] akaleigh

[Yao Xu <my...@ya...>]

http://cuduqjfj85.webs.com/index.htm?axipageID=30
Yeah, okay.Ill go myself, next time.Roberta, no, Henry said.

[CLucene-dev] vetabyrd

[Yao Xu <my...@ya...>]

http://jnagegum44.webs.com/index.htm?sufprof=55
 Hungry for hard information, people who were already on the run pulled off the highway to see the President speak. Thats enough, fella! Beaver cried.But the kid.

Re: [CLucene-dev] unicode type is not judged correctly on Mac machine

[Vivien M. <V....@qs...>]

In case anyone else is having the same problem:

Problem is solved by setting the C++ compiler to LLVM GCC 4.2, rather than using Apple LLVM compiler 3.0.



-----Original Message-----
From: Vivien Meng [mailto:V....@qs...] 
Sent: Sunday, 4 March 2012 12:27 PM
To: clu...@li...
Subject: [CLucene-dev] unicode type is not judged correctly on Mac machine

Hi:


I am using CLucene in Xcode on Mac.

While I debug into file gunichartables.cpp (belong to share), method bool cl_isletter(gunichar c), the TYPE that is returned by int t = TYPE(c) is not correct, I know that the particular character should belong to G_UNICODE_OTHER_LETTER (as it is a Chinese character), but TYPE does not return the correct type.

I know this works on Windows environment, I am wondering if anyone knows how to set some settings/switches on Mac to get the functions in gunichartables.cpp to work properly for multiple bytes characters on Mac.

It would be very much appreciated.

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[CLucene-dev] unicode type is not judged correctly on Mac machine

[Vivien M. <V....@qs...>]

Hi:


I am using CLucene in Xcode on Mac.

While I debug into file gunichartables.cpp (belong to share), method bool cl_isletter(gunichar c), the TYPE that is returned by int t = TYPE(c) is not correct, I know that the particular character should belong to G_UNICODE_OTHER_LETTER (as it is a Chinese character), but TYPE does not return the correct type.

I know this works on Windows environment, I am wondering if anyone knows how to set some settings/switches on Mac to get the functions in gunichartables.cpp to work properly for multiple bytes characters on Mac.

It would be very much appreciated.

Re: [CLucene-dev] help ! - using LanguageBasedAnalyzer/CJKTokenizer returns wrong result

[Ben v. K. <bva...@gm...>]

I'd suggest using Luke to compare what javas behaviour is
On Feb 28, 2012 10:51 PM, "Veit Jahns" <nun...@go...> wrote:

> Hi Vivien!
>
> 2012/2/27 Vivien Meng <V....@qs...>
>
>>  Hi Veit:****
>>
>> ** **
>>
>> ** **
>>
>> Thanks for your reply.****
>>
>> ** **
>>
>> Do you know if there is anyone using CJKTokenizer?
>>
>
> No, I don't know anyone. Sorry.
>
>
>> ****
>>
>> ** **
>>
>> Here is the code, no parsing error that I can see:****
>>
>> ** **
>>
>>     Directory* store = NULL;****
>>
>>     store = _CLNEW RAMDirectory();****
>>
>>     const TCHAR* contentField = _T("contents");****
>>
>>     const TCHAR* test = _T("这里我们所论及的是有儿童参加的最初级足球协会red green");****
>>
>>     const TCHAR* cjk = _T("cjk");****
>>
>>     Document doc;****
>>
>>     ****
>>
>>     IndexWriter* writer = NULL;****
>>
>>     IndexReader* reader = NULL;****
>>
>>       ****
>>
>>     LanguageBasedAnalyzer* an = _CLNEW LanguageBasedAnalyzer(cjk, false);
>> ****
>>
>>     ****
>>
>>     Query* q2 = NULL;****
>>
>>     Hits* h2 = NULL;****
>>
>>     const TCHAR* qry2 = _T("提");****
>>
>> ** **
>>
>>     writer = _CLNEW IndexWriter(store, an, true);****
>>
>>     ****
>>
>>     doc.add(*_CLNEW Field(contentField, test, Field::STORE_YES |
>> Field::INDEX_TOKENIZED));****
>>
>>       ****
>>
>>     writer->addDocument(&doc);****
>>
>>     writer->optimize();****
>>
>>       ****
>>
>>     // Close and clean up****
>>
>>     writer->close();****
>>
>>     _CLLDELETE(writer);****
>>
>>     ****
>>
>>     // verify the result****
>>
>>     reader =  IndexReader::open(store);****
>>
>>     IndexSearcher search(reader);****
>>
>>     ****
>>
>>     q2 = QueryParser::parse(qry2 , contentField, an);****
>>
>>     if ( q2 != NULL )****
>>
>>     {****
>>
>>         h2 = search.search( q2 );****
>>
>>         ****
>>
>>         size_t a = h2->length();****
>>
>>         ****
>>
>>         printf("second query is %d", (int)a);****
>>
>>     }****
>>
>>     ****
>>
>>     reader->close();
>>
>
> Looks good. What will be interesting to know is, what q2->toString()
> returns. Then you see what query is actually used for getting the hits. But
> I will try your code myself also.
>
> Best regards,
>
> Veit
>
>
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Re: [CLucene-dev] searchAfter / TopDocs Pagination

[<du...@id...>]

> Maybe Lucene++ [1] supports this. It is a port of a later Lucene version
> by
> Alan and Ben. We tried once to make this the new CLucene version, but
> havn't finished it yet.

How stable is Lucene++? Does it just have some unimplemented functionality
from java lucene or is there other problems?

Re: [CLucene-dev] help ! - using LanguageBasedAnalyzer/CJKTokenizer returns wrong result

[Veit J. <nun...@go...>]

Hi Vivien!

2012/2/27 Vivien Meng <V....@qs...>

>  Hi Veit:****
>
> ** **
>
> ** **
>
> Thanks for your reply.****
>
> ** **
>
> Do you know if there is anyone using CJKTokenizer?
>

No, I don't know anyone. Sorry.


> ****
>
> ** **
>
> Here is the code, no parsing error that I can see:****
>
> ** **
>
>     Directory* store = NULL;****
>
>     store = _CLNEW RAMDirectory();****
>
>     const TCHAR* contentField = _T("contents");****
>
>     const TCHAR* test = _T("这里我们所论及的是有儿童参加的最初级足球协会red green");****
>
>     const TCHAR* cjk = _T("cjk");****
>
>     Document doc;****
>
>     ****
>
>     IndexWriter* writer = NULL;****
>
>     IndexReader* reader = NULL;****
>
>       ****
>
>     LanguageBasedAnalyzer* an = _CLNEW LanguageBasedAnalyzer(cjk, false);*
> ***
>
>     ****
>
>     Query* q2 = NULL;****
>
>     Hits* h2 = NULL;****
>
>     const TCHAR* qry2 = _T("提");****
>
> ** **
>
>     writer = _CLNEW IndexWriter(store, an, true);****
>
>     ****
>
>     doc.add(*_CLNEW Field(contentField, test, Field::STORE_YES |
> Field::INDEX_TOKENIZED));****
>
>       ****
>
>     writer->addDocument(&doc);****
>
>     writer->optimize();****
>
>       ****
>
>     // Close and clean up****
>
>     writer->close();****
>
>     _CLLDELETE(writer);****
>
>     ****
>
>     // verify the result****
>
>     reader =  IndexReader::open(store);****
>
>     IndexSearcher search(reader);****
>
>     ****
>
>     q2 = QueryParser::parse(qry2 , contentField, an);****
>
>     if ( q2 != NULL )****
>
>     {****
>
>         h2 = search.search( q2 );****
>
>         ****
>
>         size_t a = h2->length();****
>
>         ****
>
>         printf("second query is %d", (int)a);****
>
>     }****
>
>     ****
>
>     reader->close();
>

Looks good. What will be interesting to know is, what q2->toString()
returns. Then you see what query is actually used for getting the hits. But
I will try your code myself also.

Best regards,

Veit

Re: [CLucene-dev] searchAfter / TopDocs Pagination

[Veit J. <nun...@go...>]

Hi David,

the current CLucene version is a port of Lucene 2.3.2. But these methods
were introduced in a later version of Lucene (> 3, I think). So, there no
way to do paging out of the box.You have to implement it yourself.

Maybe Lucene++ [1] supports this. It is a port of a later Lucene version by
Alan and Ben. We tried once to make this the new CLucene version, but
havn't finished it yet.

Kind regards,

Veit

[1] https://github.com/luceneplusplus/LucenePlusPlus

2012/2/27 David Linde <dav...@gm...>

> I am using CLucene 2.3.3.2 - I want to implement searchAfter in CLucene -
> or at least using paging with TopDocs? is there a way to do the same thing
> with CLucene 2.3.3.2 out of box?
>
> Thanks in advance!
>
>  TopDocs<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/TopDocs.html>
> *searchAfter<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/IndexSearcher.html#searchAfter%28org.apache.lucene.search.ScoreDoc,%20org.apache.lucene.search.Query,%20org.apache.lucene.search.Filter,%20int%29>
> *(ScoreDoc<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/ScoreDoc.html>
>  after, Query<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/Query.html>
>  query, Filter<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/Filter.html> filter,
> int n)
>           Finds the top n hits for query, applying filter if non-null,
> where all results are after a previous result (after).  TopDocs<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/TopDocs.html>
> *searchAfter<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/IndexSearcher.html#searchAfter%28org.apache.lucene.search.ScoreDoc,%20org.apache.lucene.search.Query,%20int%29>
> *(ScoreDoc<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/ScoreDoc.html>
>  after, Query<http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/Query.html> query,
> int n)
>           Finds the top n hits for query where all results are after a
> previous result (after).
>
>
> ------------------------------------------------------------------------------
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Re: [CLucene-dev] [ CLucene-developers Digest ] Help on functions that doesn't exist in CLucene

[Veit J. <nun...@go...>]

Hi Mena,

as far as I know, every function from Lucene 2.3.2 is ported to C++.
What is missing are most of the contribs. Some are there, but many are
not. But they can ported to C++. I did it once myself for the an
special analyzer. Wasn't so difficult.

Kind regards,

Veit

2012/2/24 Mena Hanna <bme...@ya...>:
> Hi
>  Our group is working in CLucene and we want to know the functions that
> exists in Lucene and doesn't exist in CLucene.
> we want to know how or where to get these functions .
>
> Thanks so much
>
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