source: trunk/MagicSoft/Mars/mdata/MDataMember.cc@ 2522

Last change on this file since 2522 was 2173, checked in by tbretz, 22 years ago
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File size: 5.6 KB
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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, 2000-2002
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 fDataMember = (TString)obj->GetName() + "." + call->GetName();
66}
67
68// --------------------------------------------------------------------------
69//
70// obj is a pointer to the instance of your class from which the data
71// should be requested. TMethodCall (s. root dox) is a pointer
72// to a TMethodCall object which should be the getter function for
73// the data you want to get.
74//
75MDataMember::MDataMember(MParContainer *obj, const TString call)
76{
77 fObject = obj;
78 fCall = obj->GetterMethod(call);
79
80 fDataMember = (TString)obj->GetName() + "." + call;
81}
82
83// --------------------------------------------------------------------------
84//
85// returns the value you requested
86//
87Double_t MDataMember::GetValue() const
88{
89 if (!fCall)
90 {
91 *fLog << err << "No TMethodCall for " << fDataMember << " of ";
92 *fLog << fObject->GetName() << " available... returning 0." << endl;
93 return 0;
94 }
95
96 switch (fCall->ReturnType())
97 {
98 case TMethodCall::kLong:
99 Long_t l;
100 fCall->Execute(fObject, l);
101 return (Double_t)l;
102
103 case TMethodCall::kDouble:
104 Double_t v;
105 fCall->Execute(fObject, v);
106 return v;
107
108 default:
109 *fLog << err << "DataMember " << fDataMember << " of ";
110 *fLog << fObject->GetName() << " neither int nor float... returning 0." << endl;
111 return 0;
112 }
113}
114
115// --------------------------------------------------------------------------
116//
117// If a string was given PreProcess try to resolv the object name and
118// tries to get it from the parlist. And also tries to resolve
119// the data member (variable) name you requested and tries to get a
120// corresponding TMethodCall from the root Dictionary.
121// Remark: If your Data Member is called fDataMember the corresponding
122// getter Method in your class must be calles fDataMember
123//
124Bool_t MDataMember::PreProcess(const MParList *plist)
125{
126 // The following change has to be checked :
127 // In order that fCall is initialized properly
128 // the original statement "if (fCall)" is replaced by the statement
129 if (fCall && !fObject)
130 return kTRUE;
131
132 TString cname(fDataMember);
133 TString mname(fDataMember);
134
135 const char *dot = strrchr(cname, '.');
136
137 if (dot)
138 {
139 const int pos = dot-cname;
140
141 cname.Remove(pos);
142 mname.Remove(0, pos+1);
143 }
144
145 fObject = (MParContainer*)plist->FindObject(cname);
146 if (!fObject)
147 {
148 *fLog << err << "Object '" << cname << "' not in parameter list... aborting." << endl;
149 return kFALSE;
150 }
151
152 fCall = fObject->GetterMethod(mname);
153
154 return fCall ? kTRUE : kFALSE;
155}
156
157// --------------------------------------------------------------------------
158//
159// Returns the ready-to-save flag of the data member container
160//
161Bool_t MDataMember::IsReadyToSave() const
162{
163 return IsValid() ? fObject->IsReadyToSave() : kFALSE;
164}
165
166// --------------------------------------------------------------------------
167//
168// Print the name of the data member without an CR.
169//
170/*
171void MDataMember::Print(Option_t *opt) const
172{
173 *fLog << fName << flush;
174}
175*/
176
177// --------------------------------------------------------------------------
178//
179// Builds a rule which cn be used in a MDataChain to describe this object
180//
181TString MDataMember::GetRule() const
182{
183 return fDataMember;
184}
185
186// --------------------------------------------------------------------------
187//
188// Returns the data member.
189// This is mainly used in MTask::AddToBranchList
190//
191TString MDataMember::GetDataMember() const
192{
193 return fDataMember;
194}
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