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#include "cntfilterrelationship.h"
#include "cnttransformcontact.h"

QTM_USE_NAMESPACE



CntFilterRelationship::CntFilterRelationship(CContactDatabase& contactDatabase,CntSymbianSrvConnection &cntServer,CntDbInfo& dbInfo) 
                                        : m_contactdatabase(contactDatabase),
                                          m_srvConnection(cntServer),
                                          m_dbInfo(dbInfo)
{

}

CntFilterRelationship::~CntFilterRelationship()
{
    
}

QList<QContactLocalId> CntFilterRelationship::contacts(
        const QContactFilter &filter,
        const QList<QContactSortOrder> &sortOrders,
        bool &filterSupportedflag,
        QContactManager::Error *error)
{
    Q_UNUSED(sortOrders);
    Q_UNUSED(filterSupportedflag);
    //Check if any invalid filter is passed 
    if(!filterSupported(filter) )
        {
        *error =  QContactManager::NotSupportedError;
        return QList<QContactLocalId>();
        }
    QList<QContactLocalId> idList;
    QString sqlQuery;
    createSelectQuery(filter,sqlQuery,error);
    //fetch the contacts
    if(*error == QContactManager::NoError )
        {
        idList =  m_srvConnection.searchContacts(sqlQuery, error);
        }
    return idList;
}


bool CntFilterRelationship::filterSupported(const QContactFilter& filter) 
{
    bool result = false;
    if(QContactFilter::RelationshipFilter == filter.type())
    {
        QContactRelationshipFilter relationfilter(filter);
        if(relationfilter.relationshipType() == QContactRelationship::HasMember)
        {
            result = true;
        }
    }
 
    return result;
}

void CntFilterRelationship::createSelectQuery(const QContactFilter& filter,
                              QString& sqlQuery,
                              QContactManager::Error* error)

{
    if(!filterSupported(filter))
    {
      *error = QContactManager::NotSupportedError;
      return;
    }
        
    QContactRelationshipFilter relationfilter(filter);
    QContactId  id_to_search = relationfilter.relatedContactId();

    if(relationfilter.relatedContactRole() == QContactRelationship::First )
    {
        sqlQuery = QString("SELECT DISTINCT contact_group_member_id FROM  groups WHERE contact_group_id = %1").arg(id_to_search.localId());
    }
    else if(relationfilter.relatedContactRole() == QContactRelationship::Second )
    {
        sqlQuery = QString("SELECT DISTINCT contact_group_id FROM  groups WHERE contact_group_member_id = %1").arg(id_to_search.localId());
    }
    else if(relationfilter.relatedContactRole() == QContactRelationship::Either )
    {
        sqlQuery = QString("SELECT contact_group_member_id FROM  groups WHERE contact_group_id = %1").arg(id_to_search.localId());
               + " union " + 
               QString("SELECT DISTINCT  contact_group_id FROM  groups WHERE contact_group_id = %1").arg(id_to_search.localId());
    }
}


void CntFilterRelationship::getSqlquery( const QContactRelationshipFilter& relationfilter,
                                               QString& sqlquery ,
                                               QContactManager::Error* error) const
{
    Q_UNUSED(relationfilter);
    Q_UNUSED(sqlquery);
    Q_UNUSED(error);
}

