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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: resultsetforquery.cxx,v $
 * $Revision: 1.16 $
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
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 * version 3 along with OpenOffice.org.  If not, see
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_xmlhelp.hxx"
#include <com/sun/star/ucb/Command.hpp>
#include <com/sun/star/ucb/XCommandEnvironment.hpp>
#include <com/sun/star/i18n/XExtendedTransliteration.hpp>
#include <com/sun/star/ucb/XCommandProcessor.hpp>
#include <com/sun/star/lang/Locale.hpp>
#include <qe/QueryProcessor.hxx>
#ifndef INCLUDED_STL_ALGORITHM
#include <algorithm>
#define INCLUDED_STL_ALGORITHM
#endif
#ifndef INCLUDED_STL_SET
#include <set>
#define INCLUDED_STL_SET
#endif

#include "resultsetforquery.hxx"
#include "databases.hxx"

using namespace std;
using namespace chelp;
using namespace xmlsearch::excep;
using namespace xmlsearch::qe;
using namespace com::sun::star;
using namespace com::sun::star::ucb;
using namespace com::sun::star::i18n;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;

ResultSetForQuery::ResultSetForQuery( const uno::Reference< lang::XMultiServiceFactory >&  xMSF,
                                      const uno::Reference< XContentProvider >&  xProvider,
                                      sal_Int32 nOpenMode,
                                      const uno::Sequence< beans::Property >& seq,
                                      const uno::Sequence< NumberedSortingInfo >& seqSort,
                                      URLParameter& aURLParameter,
                                      Databases* pDatabases )
    : ResultSetBase( xMSF,xProvider,nOpenMode,seq,seqSort ),
      m_pDatabases( pDatabases ),
      m_aURLParameter( aURLParameter )
{
    Reference< XTransliteration > xTrans(
        xMSF->createInstance( rtl::OUString::createFromAscii( "com.sun.star.i18n.Transliteration" ) ),
        UNO_QUERY );
    Locale aLocale( aURLParameter.get_language(),
                    rtl::OUString(),
                    rtl::OUString() );
    if(xTrans.is())
        xTrans->loadModule(TransliterationModules_UPPERCASE_LOWERCASE,
                           aLocale );

    unsigned int i;
    vector< vector< rtl::OUString > > queryList;

    {
        sal_Int32 idx;
        rtl::OUString query = m_aURLParameter.get_query();
        while( query.getLength() )
        {
            idx = query.indexOf( sal_Unicode( ' ' ) );
            if( idx == -1 )
                idx = query.getLength();

            vector< rtl::OUString > currentQuery;
            rtl::OUString tmp(query.copy( 0,idx ));
            rtl:: OUString toliterate = tmp;
            if(xTrans.is()) {
                Sequence<sal_Int32> aSeq;
                toliterate = xTrans->transliterate(
                    tmp,0,tmp.getLength(),aSeq);
            }
            currentQuery.push_back( toliterate );
            queryList.push_back( currentQuery );
            query = query.copy( 1 + idx );
        }
    }

    rtl::OUString scope = m_aURLParameter.get_scope();
    StaticModuleInformation* inf =
        m_pDatabases->getStaticInformationForModule( m_aURLParameter.get_module(),
                                                     m_aURLParameter.get_language() );

    if( inf )
    {
        if( scope.compareToAscii( "Heading" ) == 0 )
            scope = rtl::OUString::createFromAscii("title"); // inf->get_heading();
        else
            scope = inf->get_fulltext();
    }

    sal_Int32 hitCount = m_aURLParameter.get_hitCount();

    QueryResults* queryResults = 0;
    QueryHitIterator* it = 0;
    set< rtl::OUString > aSet,aCurrent,aResultSet;

    try
    {
        rtl::OUString idxDir =
            m_pDatabases->getInstallPathAsURL()                    +
            m_pDatabases->lang( m_aURLParameter.get_language() )   +
            rtl::OUString::createFromAscii( "/" )                  +
            m_aURLParameter.get_module()                           +
            rtl::OUString::createFromAscii( ".idx/" );

        if(queryList.size() > 1)
            hitCount = 2000;

        for( i = 0; i < queryList.size(); ++i )
        {
            QueryProcessor queryProcessor(idxDir);
            QueryStatement queryStatement(hitCount,queryList[i],scope);
            queryResults = queryProcessor.processQuery( queryStatement );

            it = 0;
            if( queryResults )
                it = queryResults->makeQueryHitIterator();

            aSet.clear();
            while( it && it->next() )
            {
                QueryHitData* qhd = it->getHit( 0 /*PrefixTranslator*/ );
                if(qhd)
                    aSet.insert(qhd->getDocument());
            }

            delete it;  // deletes also queryResults[i]

            // intersect
            if( i == 0 )
                aResultSet = aSet;
            else
            {
                aCurrent = aResultSet;
                aResultSet.clear();
                set_intersection( aSet.begin(),aSet.end(),
                                  aCurrent.begin(),aCurrent.end(),
                                  inserter(aResultSet,aResultSet.begin()));
            }
        }
    }
    catch( IOException )
    {
    }

    sal_Int32 replIdx = rtl::OUString::createFromAscii( "#HLP#" ).getLength();
    rtl::OUString replWith = rtl::OUString::createFromAscii( "vnd.sun.star.help://" );

    set< rtl::OUString >::const_iterator set_it = aResultSet.begin();
    while( set_it != aResultSet.end() )
    {
          m_aPath.push_back(replWith + set_it->copy(replIdx));
        ++set_it;
    }

    m_aItems.resize( m_aPath.size() );
    m_aIdents.resize( m_aPath.size() );

    Command aCommand;
    aCommand.Name = rtl::OUString::createFromAscii( "getPropertyValues" );
    aCommand.Argument <<= m_sProperty;

    for( m_nRow = 0; sal::static_int_cast<sal_uInt32>( m_nRow ) < m_aPath.size(); ++m_nRow )
    {
        m_aPath[m_nRow] =
            m_aPath[m_nRow]                                          +
            rtl::OUString::createFromAscii( "?Language=" )           +
            m_aURLParameter.get_language()                           +
            rtl::OUString::createFromAscii( "&System=" )             +
            m_aURLParameter.get_system();

        uno::Reference< XContent > content = queryContent();
        if( content.is() )
        {
            uno::Reference< XCommandProcessor > cmd( content,uno::UNO_QUERY );
            cmd->execute( aCommand,0,uno::Reference< XCommandEnvironment >( 0 ) ) >>= m_aItems[m_nRow]; //TODO: check return value of operator >>=
        }
    }
    m_nRow = 0xffffffff;
}