source: trunk/Mars/mdata/MData.cc@ 12105

Last change on this file since 12105 was 3572, checked in by tbretz, 21 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// MData
28//
29// This base class defines an interface to a generalized value.
30// This value can be a simple number, it can also be a data member
31// of a class or some kind of concatenation of MData objects.
32//
33// A class inheriting from MData must implement:
34//
35// - Double_t GetValue() const
36// which return the value corresponding to the object
37//
38// - Bool_t IsValid() const
39// should tell whether the object is valid (eg if the object parses
40// a string the result might be invalid)
41//
42// - Bool_t PreProcess(const MParList *plist)
43// which can be used to get some necessary data (befor processing)
44// from the parlist.
45//
46// - TString GetRule()
47// returns the rule as a text which would recreate the same structure
48// when used in a MDataChain
49//
50// - TString GetDataMember()
51// returns the names (seperated by a comma) used by this class. This
52// is mainly used for the AutoScheme when reading data from a file.
53// (s.MReadTree)
54//
55// - void SetVariables(const TArrayD &arr)
56// is used to distribute variable numbers through lists holding
57// MDatas to its counterpart (mainly to MDataValue)
58//
59// The 'must' ist represented by the =0 in the class header. In the C++
60// language this is called an abstract member function. Because the
61// class contains abstract member function which makes it impossible
62// to create an instance of this class one calls it also:
63// abstract base class
64//
65/////////////////////////////////////////////////////////////////////////////
66
67#include "MData.h"
68
69#include <fstream>
70
71#include "MLog.h"
72
73ClassImp(MData);
74
75using namespace std;
76
77Bool_t MData::AsciiWrite(ostream &out) const
78{
79 out << GetValue() << " ";
80 return kTRUE;
81}
82
83void MData::Print(Option_t *opt) const
84{
85 *fLog << GetRule() << flush;
86}
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