Go to the documentation of this file.00001 #ifndef DataFormats_Common_OneToValue_h
00002 #define DataFormats_Common_OneToValue_h
00003 #include "DataFormats/Common/interface/AssociationMapHelpers.h"
00004 #include "DataFormats/Common/interface/Ref.h"
00005 #include "DataFormats/Common/interface/RefProd.h"
00006 #include <map>
00007
00008 namespace edm {
00009 template<typename CKey, typename Val, typename index = unsigned int>
00010 class OneToValue {
00012 typedef edm::RefProd<CKey> KeyRefProd;
00014 typedef Val map_assoc;
00015 public:
00017 typedef Val val_type;
00019 typedef edm::Ref<CKey> key_type;
00021 typedef Val data_type;
00023 typedef index index_type;
00025 typedef std::map<index_type, map_assoc> map_type;
00027 typedef helpers::Key<KeyRefProd> ref_type;
00029 typedef std::map<const typename CKey::value_type *, Val> transient_map_type;
00031 typedef std::vector<const typename CKey::value_type *> transient_key_vector;
00033 typedef std::vector<Val> transient_val_vector;
00035 static void insert(ref_type & ref, map_type & m,
00036 const key_type & k, const data_type & v) {
00037 if (k.isNull())
00038 Exception::throwThis(errors::InvalidReference,
00039 "can't insert null references in AssociationMap");
00040 if (ref.key.isNull()) {
00041 ref.key = KeyRefProd(k);
00042 }
00043 helpers::checkRef(ref.key, k);
00044 index_type ik = index_type(k.key());
00045 m[ik] = v;
00046 }
00048 static val_type val(const ref_type & ref, const map_assoc & v) {
00049 return v;
00050 }
00052 static typename map_type::size_type size(const map_assoc &) { return 1; }
00054 static void sort(map_type &) { }
00056 static transient_map_type transientMap(const ref_type & ref, const map_type & map) {
00057 transient_map_type m;
00058 const CKey & ckey = * ref.key;
00059 for(typename map_type::const_iterator i = map.begin(); i != map.end(); ++ i) {
00060 const typename CKey::value_type * k = & ckey[i->first];
00061 m.insert(std::make_pair(k, i->second));
00062 }
00063 return m;
00064 }
00066 static transient_key_vector transientKeyVector(const ref_type & ref, const map_type & map) {
00067 transient_key_vector m;
00068 const CKey & ckey = * ref.key;
00069 for(typename map_type::const_iterator i = map.begin(); i != map.end(); ++ i)
00070 m.push_back(& ckey[i->first]);
00071 return m;
00072 }
00074 static transient_val_vector transientValVector(const ref_type & ref, const map_type & map) {
00075 transient_val_vector m;
00076 for(typename map_type::const_iterator i = map.begin(); i != map.end(); ++ i)
00077 m.push_back(i->second);
00078 return m;
00079 }
00080 };
00081 }
00082
00083 #endif
1.7.3