source: trunk/MagicSoft/Mars/mdata/MDataMember.cc@ 8743

Last change on this file since 8743 was 8720, checked in by tbretz, 17 years ago
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1/* ======================================================================== *\
2!
3! *
4! * This file is part of MARS, the MAGIC Analysis and Reconstruction
5! * Software. It is distributed to you in the hope that it can be a useful
6! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
7! * It is distributed WITHOUT ANY WARRANTY.
8! *
9! * Permission to use, copy, modify and distribute this software and its
10! * documentation for any purpose is hereby granted without fee,
11! * provided that the above copyright notice appear in all copies and
12! * that both that copyright notice and this permission notice appear
13! * in supporting documentation. It is provided "as is" without express
14! * or implied warranty.
15! *
16!
17!
18! Author(s): Thomas Bretz 04/2002 <mailto:tbretz@astro.uni-wuerzburg.de>
19!
20! Copyright: MAGIC Software Development, 2000-2004
21!
22!
23\* ======================================================================== */
24
25/////////////////////////////////////////////////////////////////////////////
26//
27// MDataMember
28//
29// This objects corresponds to the data member of another object.
30// You can either specify the object as a string, eg "MHillas.fWidth"
31// where MHillas is the name of the container in the parameterlist
32// and fWidth is it's data member, or you can specify it by giving
33// the pointer corresponding to the instance of your object and
34// a TMethodCall pointer corresponding to the Member function returning
35// the requested value.
36//
37/////////////////////////////////////////////////////////////////////////////
38#include "MDataMember.h"
39
40#include <fstream>
41
42#include <TMethodCall.h>
43
44#include "MLog.h"
45#include "MLogManip.h"
46
47#include "MParList.h"
48
49ClassImp(MDataMember);
50
51using namespace std;
52
53// --------------------------------------------------------------------------
54//
55// obj is a pointer to the instance of your class from which the data
56// should be requested. TMethodCall (s. root dox) is a pointer
57// to a TMethodCall object which should be the getter function for
58// the data you want to get.
59//
60MDataMember::MDataMember(MParContainer *obj, TMethodCall *call)
61{
62 fObject = obj;
63 fCall = call;
64
65 if (fCall->ReturnType()==TMethodCall::kLong)
66 SetBit(kIsInt);
67 else
68 ResetBit(kIsInt);
69
70 fDataMember = (TString)obj->GetName() + "." + call->GetName();
71}
72
73// --------------------------------------------------------------------------
74//
75// obj is a pointer to the instance of your class from which the data
76// should be requested. TMethodCall (s. root dox) is a pointer
77// to a TMethodCall object which should be the getter function for
78// the data you want to get.
79//
80MDataMember::MDataMember(MParContainer *obj, const TString call)
81{
82 fObject = obj;
83 fCall = obj->GetterMethod(call);
84
85 if (fCall->ReturnType()==TMethodCall::kLong)
86 SetBit(kIsInt);
87 else
88 ResetBit(kIsInt);
89
90 fDataMember = (TString)obj->GetName() + "." + call;
91}
92
93// --------------------------------------------------------------------------
94//
95// Returns the value you requested
96//
97Double_t MDataMember::GetValue() const
98{
99 if (!fObject)
100 {
101 *fLog << err << "ERROR - MDataMember::GetValue: fObject not initialized ";
102 *fLog << "(not PreProcessed)... returning 0." << endl;
103 return 0;
104 }
105
106 if (!fCall)
107 {
108 *fLog << err << "No TMethodCall for " << fDataMember << " of ";
109 *fLog << fObject->GetName() << " available... returning 0." << endl;
110 return 0;
111 }
112
113 switch (fCall->ReturnType())
114 {
115 case TMethodCall::kLong:
116 Long_t l;
117 fCall->Execute(fObject, l);
118 return (Double_t)l;
119
120 case TMethodCall::kDouble:
121 Double_t v;
122 fCall->Execute(fObject, v);
123 return v;
124
125 default:
126 *fLog << err << "DataMember " << fDataMember << " of ";
127 *fLog << fObject->GetName() << " neither int nor float... returning 0." << endl;
128 return 0;
129 }
130}
131
132// --------------------------------------------------------------------------
133//
134// If a string was given PreProcess try to resolv the object name and
135// tries to get it from the parlist. And also tries to resolve
136// the data member (variable) name you requested and tries to get a
137// corresponding TMethodCall from the root Dictionary.
138// Remark: If your Data Member is called fDataMember the corresponding
139// getter Method in your class must be calles fDataMember
140//
141Bool_t MDataMember::PreProcess(const MParList *plist)
142{
143 // The following change has to be checked :
144 // In order that fCall is initialized properly
145 // the original statement "if (fCall)" is replaced by the statement
146 if (fCall && !fObject)
147 return kTRUE;
148
149 TString cname(fDataMember);
150 TString mname(fDataMember);
151
152 const char *dot = strrchr(cname, '.');
153
154 if (dot)
155 {
156 const int pos = dot-cname;
157
158 cname.Remove(pos);
159 mname.Remove(0, pos+1);
160 }
161
162 fObject = (MParContainer*)plist->FindObject(cname);
163 if (!fObject)
164 {
165 *fLog << err << "Object '" << cname << "' not in parameter list... aborting." << endl;
166 return kFALSE;
167 }
168
169 fCall = fObject->GetterMethod(mname);
170
171 return fCall ? kTRUE : kFALSE;
172}
173
174// --------------------------------------------------------------------------
175//
176// Returns the ready-to-save flag of the data member container
177//
178Bool_t MDataMember::IsReadyToSave() const
179{
180 return IsValid() ? fObject->IsReadyToSave() : kFALSE;
181}
182
183// --------------------------------------------------------------------------
184//
185// Print the name of the data member without an CR.
186//
187/*
188void MDataMember::Print(Option_t *opt) const
189{
190 *fLog << fName << flush;
191}
192*/
193
194// --------------------------------------------------------------------------
195//
196// Builds a rule which can be used in a MDataPhrase to describe this object
197//
198TString MDataMember::GetRule() const
199{
200 return fDataMember;
201}
202
203// --------------------------------------------------------------------------
204//
205// Returns the data member.
206// This is mainly used in MTask::AddToBranchList
207//
208TString MDataMember::GetDataMember() const
209{
210 return fDataMember;
211}
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