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//--------------------------------------------------------------------------------------------------
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// $Id: RefArray.h,v 1.22 2009/03/23 22:15:10 loizides Exp $
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//
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// RefArray
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//
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// Implementation of an efficient TRefArray using the FastArray.
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//
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// RefArray now supports objects from multiple PIDs, but only a single
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// PID will be stored as long as only objects from a single PID are added.
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//
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// Authors: C.Loizides, J.Bendavid
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//--------------------------------------------------------------------------------------------------
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#ifndef MITANA_DATACONT_REFARRAY_H
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#define MITANA_DATACONT_REFARRAY_H
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#include <TObject.h>
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#include <TRefArray.h>
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#include <TRefTable.h>
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#include <TProcessID.h>
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#include <TError.h>
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#include "MitAna/DataCont/interface/RefResolver.h"
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#include "MitAna/DataCont/interface/Collection.h"
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#include "MitAna/DataCont/interface/FastArray.h"
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#include "MitAna/DataCont/interface/FastArrayBasic.h"
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#include "MitAna/DataCont/interface/ProcIDRef.h"
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namespace mithep
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{
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template<class ArrayElement>
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class RefArray : public Collection<ArrayElement>
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{
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public:
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RefArray();
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void Add(const ArrayElement *ae);
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ArrayElement *At(UInt_t idx);
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const ArrayElement *At(UInt_t idx) const;
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void Clear(Option_t */*opt*/="") { fPIDs.Clear(); fUIDs.Clear(); }
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UInt_t Entries() const { return fUIDs.Entries(); }
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UInt_t GetEntries() const { return fUIDs.GetEntries(); }
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UInt_t GetSize() const { return fUIDs.GetSize(); }
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Bool_t HasObject(const ArrayElement *obj) const;
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Bool_t IsOwner() const { return kTRUE; }
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TObject *ObjAt(UInt_t idx);
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const TObject *ObjAt(UInt_t idx) const;
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void Reset();
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void Trim() { fPIDs.Trim(); fUIDs.Trim(); }
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ArrayElement *UncheckedAt(UInt_t idx);
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const ArrayElement *UncheckedAt(UInt_t idx) const;
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ArrayElement *operator[](UInt_t idx);
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const ArrayElement *operator[](UInt_t idx) const;
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protected:
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TObject *GetObject(UInt_t idx) const;
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TProcessID *GetPID(UInt_t idx) const;
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UInt_t GetUID(UInt_t idx) const;
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FastArray<ProcIDRef> fPIDs; //||process ids of referenced objects
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FastArrayBasic<UInt_t> fUIDs; //||unique ids of referenced objects
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ClassDef(RefArray, 1) // Implementation of our own TRefArray
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};
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline mithep::RefArray<ArrayElement>::RefArray()
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{
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// Default constructor.
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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void mithep::RefArray<ArrayElement>::Add(const ArrayElement *ae)
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{
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// Add reference to object.
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if (!ae)
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return;
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// check if the object can belong here and assign or get its uid
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if (ae->TestBit(kHasUUID)) {
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Fatal("Add", "Object cannot be added as it has not UUID!");
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return;
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}
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UInt_t uid = 0;
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TProcessID *pid = 0;
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if (ae->TestBit(kIsReferenced)) {
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uid = ae->GetUniqueID();
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pid = TProcessID::GetProcessWithUID(uid, const_cast<ArrayElement*>(ae));
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} else {
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pid = TProcessID::GetSessionProcessID();
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uid = TProcessID::AssignID(const_cast<ArrayElement*>(ae));
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}
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// If RefArray contains one and only one PID reference, then only add another if the added object
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// has a different PID. When this occurs all of the extra spaces which had been left empty get
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// filled in with the original PID
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if (fPIDs.Entries()==1) {
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if (pid != fPIDs.At(0)->Pid() ) {
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while (fPIDs.Entries()<Entries())
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fPIDs.GetNew()->SetPid(fPIDs.At(0)->Pid());
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fPIDs.GetNew()->SetPid(pid);
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}
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}
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else
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fPIDs.GetNew()->SetPid(pid);
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fUIDs.Add(uid);
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BaseCollection::Clear();
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline ArrayElement *mithep::RefArray<ArrayElement>::At(UInt_t idx)
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{
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// Return entry at given index.
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if (idx<Entries())
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return static_cast<ArrayElement*>(GetObject(idx));
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Fatal("At", "Given index (%u) is larger than array size (%u)", idx, Entries());
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline const ArrayElement *mithep::RefArray<ArrayElement>::At(UInt_t idx) const
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{
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// Return entry at given index.
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if (idx<Entries())
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return static_cast<const ArrayElement*>(GetObject(idx));
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Fatal("At", "Given index (%u) is larger than array size (%u)", idx, Entries());
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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TObject *mithep::RefArray<ArrayElement>::GetObject(UInt_t idx) const
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{
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// Return entry at given index. Code adapted from TRef::GetObject().
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TProcessID *pid = GetPID(idx);
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if (!pid) {
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Fatal("GetObject","Process id pointer is null!");
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return 0;
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}
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if (!TProcessID::IsValid(pid)) {
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Fatal("GetObject","Process id is invalid!");
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return 0;
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}
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UInt_t uid = GetUID(idx);
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TObject *obj = RefResolver::GetObjectWithID(uid,pid);
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if (!obj) {
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Fatal("RefArray::GetObject","Null pointer for filled element!");
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}
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return obj;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline TProcessID *mithep::RefArray<ArrayElement>::GetPID(UInt_t idx) const
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{
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// Return pid corresponding to given idx.
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TProcessID *pid = 0;
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if (fPIDs.Entries()>1)
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pid = fPIDs.UncheckedAt(idx)->Pid();
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else
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pid = fPIDs.UncheckedAt(0)->Pid();
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return pid;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline UInt_t mithep::RefArray<ArrayElement>::GetUID(UInt_t idx) const
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{
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// Return uid corresponding to given idx.
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return fUIDs.UncheckedAt(idx);
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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Bool_t mithep::RefArray<ArrayElement>::HasObject(const ArrayElement *obj) const
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{
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// Check whether array contains a given object.
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if (!obj->TestBit(kIsReferenced))
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return kFALSE;
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UInt_t oUid = obj->GetUniqueID();
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TProcessID *oPid = TProcessID::GetProcessWithUID(oUid, const_cast<ArrayElement*>(obj));
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for (UInt_t i=0; i<Entries(); ++i) {
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if ( (GetUID(i)&0xffffff)==(oUid&0xffffff) && GetPID(i)->GetUniqueID()==oPid->GetUniqueID())
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return kTRUE;
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}
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return kFALSE;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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TObject *mithep::RefArray<ArrayElement>::ObjAt(UInt_t idx)
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{
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// Return object at given index.
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if (idx<Entries())
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return GetObject(idx);
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Fatal("ObjAt", "Given index (%u) is larger than array size (%u)", idx, Entries());
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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const TObject *mithep::RefArray<ArrayElement>::ObjAt(UInt_t idx) const
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{
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// Return object at given index.
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if (idx<Entries())
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return static_cast<const TObject*>(GetObject(idx));
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Fatal("ObjAt", "Given index (%u) is larger than array size (%u)", idx, Entries());
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return 0;
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline void mithep::RefArray<ArrayElement>::Reset()
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{
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// Reset the array.
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fUIDs.Reset();
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fPIDs.Reset();
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BaseCollection::Clear();
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline ArrayElement *mithep::RefArray<ArrayElement>::UncheckedAt(UInt_t idx)
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{
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// Return entry at given index.
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return static_cast<ArrayElement*>(GetObject(idx));
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline const ArrayElement *mithep::RefArray<ArrayElement>::UncheckedAt(UInt_t idx) const
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{
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// Return entry at given index.
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return static_cast<const ArrayElement*>(GetObject(idx));
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline const ArrayElement *mithep::RefArray<ArrayElement>::operator[](UInt_t idx) const
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{
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// Return entry at given index.
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return At(idx);
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}
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//--------------------------------------------------------------------------------------------------
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template<class ArrayElement>
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inline ArrayElement *mithep::RefArray<ArrayElement>::operator[](UInt_t idx)
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{
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// Return entry at given index.
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return At(idx);
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}
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#endif
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