lcdd/include/lcdd/hits

diff -N CalorimeterHitMap.hh
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ CalorimeterHitMap.hh	14 Sep 2013 01:40:04 -0000	1.1
@@ -0,0 +1,60 @@

+// $Header: /cvs/lcd/lcdd/include/lcdd/hits/CalorimeterHitMap.hh,v 1.1 2013/09/14 01:40:04 jeremy Exp $
+
+#ifndef lcdd_hits_CalorimeterHitMap_hh
+#define lcdd_hits_CalorimeterHitMap_hh 1
+
+// LCDD
+#include "lcdd/id/Id64bit.hh"
+#include "lcdd/hits/CalorimeterHit.hh"
+
+// STL
+#include <map>
+
+/**
+ * This class maps CalorimeterHit objects to their 64-bit identifiers
+ * for fast lookup with O(1) performance.
+ */
+class CalorimeterHitMap
+{
+
+	/**
+	 * Type definition for map.
+	 */
+	typedef std::map<Id64bit::ValueType, CalorimeterHit*> MapType;
+
+public:
+
+	/**
+	 * Class constructor.
+	 */
+	CalorimeterHitMap();
+
+	/**
+	 * Class destructor.
+	 */
+	~CalorimeterHitMap();
+
+	/**
+	 * Add a hit.
+	 * @param hit The hit to add.
+	 */
+	void add(CalorimeterHit* hit);
+
+	/**
+	 * Get a hit by its 64-bit identifier.
+	 * @param id The identifier of the hit.
+	 * @return The matching hit or 0 if does not exist.
+	 */
+	CalorimeterHit* get(const Id64bit& id);
+
+	/**
+	 * Clear all entries from this hit map.
+	 */
+	void clear();
+
+private:
+
+	MapType _map;
+};
+
+#endif

lcdd/src/lcdd/hits

diff -N CalorimeterHitMap.cc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ CalorimeterHitMap.cc	14 Sep 2013 01:40:04 -0000	1.1
@@ -0,0 +1,26 @@

+// $Header: /cvs/lcd/lcdd/src/lcdd/hits/CalorimeterHitMap.cc,v 1.1 2013/09/14 01:40:04 jeremy Exp $
+
+#include "lcdd/hits/CalorimeterHitMap.hh"
+
+CalorimeterHitMap::CalorimeterHitMap()
+{}
+
+CalorimeterHitMap::~CalorimeterHitMap()
+{
+	_map.clear();
+}
+
+void CalorimeterHitMap::add(CalorimeterHit* hit)
+{
+	_map[hit->getId64bit().getValue()] = hit;
+}
+
+CalorimeterHit* CalorimeterHitMap::get(const Id64bit& id)
+{
+	return _map[id.getValue()];
+}
+
+void CalorimeterHitMap::clear()
+{
+	_map.clear();
+}