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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /////////////////////////////////////////////////////////////////////////////// | |
17 | /// | |
18 | /// This is a class for reading raw data from a root chain. | |
19 | /// There are two constructors available - one from a text file containing the | |
20 | /// list of root raw-data files to be processed and one directly from | |
21 | /// TFileCollection. | |
22 | /// | |
23 | /// cvetan.cheshkov@cern.ch 29/07/2008 | |
24 | /// | |
25 | /////////////////////////////////////////////////////////////////////////////// | |
26 | ||
27 | #include <TChain.h> | |
28 | #include <TFileCollection.h> | |
29 | ||
30 | #include "AliRawReaderChain.h" | |
31 | #include "AliRawEvent.h" | |
32 | ||
33 | ClassImp(AliRawReaderChain) | |
34 | ||
35 | AliRawReaderChain::AliRawReaderChain() : | |
36 | AliRawReaderRoot(), | |
37 | fChain(NULL) | |
38 | { | |
39 | // default constructor | |
40 | } | |
41 | ||
42 | AliRawReaderChain::AliRawReaderChain(TString listFileName) : | |
43 | AliRawReaderRoot(), | |
44 | fChain(NULL) | |
45 | { | |
46 | // create raw-reader objects which takes as an input a root chain | |
47 | // from the file list found in 'listFileName' | |
48 | ||
49 | TFileCollection collection("RAW", | |
50 | "Collection with raw-data files", | |
51 | listFileName.Data()); | |
52 | ||
53 | TChain* fChain = new TChain("RAW"); | |
54 | if (!fChain->AddFileInfoList((TCollection*)(collection.GetList()))) { | |
55 | Error("AliRawReaderChain","Bad file list in collection, the chain is empty"); | |
56 | return; | |
57 | } | |
58 | ||
59 | fChain->SetBranchStatus("*",0); | |
60 | fChain->SetBranchStatus("rawevent",1); | |
61 | ||
62 | fEvent = new AliRawEvent; | |
63 | fChain->SetBranchAddress("rawevent", &fEvent); | |
64 | } | |
65 | ||
66 | AliRawReaderChain::AliRawReaderChain(TFileCollection *collection) : | |
67 | AliRawReaderRoot(), | |
68 | fChain(NULL) | |
69 | { | |
70 | // create raw-reader objects which takes as an input a root chain | |
71 | // from a root file collection | |
72 | ||
73 | TChain* fChain = new TChain("RAW"); | |
74 | if (!fChain->AddFileInfoList((TCollection*)(collection->GetList()))) { | |
75 | Error("AliRawReaderChain","Bad file list in collection, the chain is empty"); | |
76 | return; | |
77 | } | |
78 | ||
79 | fChain->SetBranchStatus("*",0); | |
80 | fChain->SetBranchStatus("rawevent",1); | |
81 | ||
82 | fEvent = new AliRawEvent; | |
83 | fChain->SetBranchAddress("rawevent", &fEvent); | |
84 | } | |
85 | ||
86 | AliRawReaderChain::AliRawReaderChain(const AliRawReaderChain& rawReader) : | |
87 | AliRawReaderRoot(rawReader), | |
88 | fChain(rawReader.fChain) | |
89 | { | |
90 | // copy constructor | |
91 | } | |
92 | ||
93 | AliRawReaderChain& AliRawReaderChain::operator = (const AliRawReaderChain& | |
94 | rawReader) | |
95 | { | |
96 | // assignment operator | |
97 | ||
98 | this->~AliRawReaderChain(); | |
99 | new(this) AliRawReaderChain(rawReader); | |
100 | return *this; | |
101 | } | |
102 | ||
103 | AliRawReaderChain::~AliRawReaderChain() | |
104 | { | |
105 | // delete objects and close root file | |
106 | ||
107 | if (fChain) { | |
108 | delete fChain; | |
109 | fChain = NULL; | |
110 | } | |
111 | } | |
112 | ||
113 | Bool_t AliRawReaderChain::NextEvent() | |
114 | { | |
115 | // go to the next event in the root file | |
116 | ||
117 | if (!fChain || !fChain->GetListOfFiles()->GetEntriesFast()) return kFALSE; | |
118 | ||
119 | do { | |
120 | delete fEvent; | |
121 | fEvent = new AliRawEvent; | |
122 | if (fChain->GetEntry(fEventIndex+1) <= 0) | |
123 | return kFALSE; | |
124 | fEventIndex++; | |
125 | } while (!IsEventSelected()); | |
126 | fEventNumber++; | |
127 | return Reset(); | |
128 | } | |
129 | ||
130 | Bool_t AliRawReaderChain::RewindEvents() | |
131 | { | |
132 | // go back to the beginning of the root file | |
133 | ||
134 | fEventIndex = -1; | |
135 | delete fEvent; | |
136 | fEvent = new AliRawEvent; | |
137 | fEventNumber = -1; | |
138 | return Reset(); | |
139 | } |