DDQuery.cc

Go to the documentation of this file.

#include "DetectorDescription/Core/interface/DDQuery.h"

#include <iterator>

#include "DetectorDescription/Core/interface/DDScope.h"
#include "DetectorDescription/Core/interface/DDsvalues.h"

class DDCompactView;

DDQuery::DDQuery(const DDCompactView & cpv)
 :   epv_(cpv), scope_(0)
{ }
 

DDQuery::~DDQuery() 
{ }


void DDQuery::addFilter(const DDFilter & f)
{
  // cheating a bit with const ....
  // Filters have a non-const ::accept(..) member function to allow
  // a possible internal state change in a particular filter implementation ...
  DDFilter * nonConstFilter = const_cast<DDFilter *>(&f);
  criteria_.push_back(std::make_pair(false,nonConstFilter)); 
}


void DDQuery::setScope(const DDScope & s) 
{
  scope_ = &s;
}


const std::vector<DDExpandedNode> & DDQuery::exec()
{
   result_.clear();
   epv_.reset();
   
   // currently at least one filter must be set, because
   // the query simply consists in applying at least one filter!
   if(criteria_.size()) { // <- remove the 'if' when implementing 'the QUERY'
     int depth = 0;
     bool scoped = false;
     DDScope::scope_type dummy;
     DDScope::scope_type::const_iterator it = dummy.begin();
     DDScope::scope_type::const_iterator it_end = dummy.end();
     if (scope_) {
       const DDScope & sc = *scope_;
       it = sc.scope().begin();
       depth = sc.depth();
       scoped = bool(sc.scope().end()-it);  
     }
     
     bool runonce = scoped ? false : true;
            
     while (runonce || (it != it_end) ) {
        if (scoped) epv_.setScope(*it,depth); // set the subtree-scope & depth within
        bool run = true;
    while(run) {
      std::vector<const DDsvalues_type *> specs = epv_.specifics();
            // loop over all user-supplied criteria (==filters)
            bool result=true;
            for( auto it = begin(criteria_); it != end(criteria_); ++it) {
              DDFilter * filter = it->second;
          if (filter->accept(epv_)) {
            it->first=true;
          }
          else {
            it->first=false;
          }
            
              result &= it->first; 
              if(! result) {
                break;
              }
        } // <-- loop over filters 
      if (result) {
        // HERE THE ACTUAL QUERY SHOULD BE INVOKED!!!
        result_.push_back(epv_.geoHistory().back());  
      }  
      //} <-- loop over std::vector of specifics_type ...
      run = epv_.next();
    }
        if (scoped)
      ++it;
    else
      runonce=false;    
     } 
   }  
   return result_;
}