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2c8628dd | 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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // base class for data base access classes // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | ||
25 | #include <TFile.h> | |
26 | #include <TKey.h> | |
27 | #include <TROOT.h> | |
28 | ||
29 | #include "AliLog.h" | |
f05209ee | 30 | #include "AliSelectionMetaData.h" |
31 | #include "AliObjectMetaData.h" | |
2c8628dd | 32 | #include "AliRunData.h" |
33 | #include "AliRunDataStorage.h" | |
34 | ||
35 | ||
36 | ClassImp(AliRunDataStorage) | |
37 | ||
38 | ||
39 | AliRunDataStorage* AliRunDataStorage::fgInstance = NULL; | |
40 | ||
41 | ||
42 | //_____________________________________________________________________________ | |
43 | AliRunDataStorage::AliRunDataStorage() : | |
44 | TObject(), | |
45 | fSelection(), | |
46 | fEntries(), | |
47 | fRecordFile(NULL) | |
48 | { | |
49 | // default constructor | |
2c8628dd | 50 | if (fgInstance) delete fgInstance; |
51 | fgInstance = this; | |
52 | } | |
53 | ||
54 | //_____________________________________________________________________________ | |
55 | AliRunDataStorage::~AliRunDataStorage() | |
56 | { | |
57 | // destructor | |
58 | ||
59 | fSelection.Delete(); | |
60 | fEntries.Delete(); | |
61 | if (fRecordFile) { | |
62 | fRecordFile->Close(); | |
63 | delete fRecordFile; | |
64 | } | |
65 | fgInstance = NULL; | |
66 | } | |
67 | ||
68 | //_____________________________________________________________________________ | |
69 | AliRunDataStorage::AliRunDataStorage(const AliRunDataStorage& db) : | |
70 | TObject(db), | |
71 | fSelection(), | |
72 | fEntries(), | |
73 | fRecordFile(NULL) | |
74 | { | |
75 | // copy constructor | |
76 | ||
77 | AliFatal("not implemented"); | |
78 | } | |
79 | ||
80 | //_____________________________________________________________________________ | |
81 | AliRunDataStorage& AliRunDataStorage::operator = (const AliRunDataStorage& /*db*/) | |
82 | { | |
83 | // assignment operator | |
84 | ||
85 | AliFatal("not implemented"); | |
86 | return *this; | |
87 | } | |
88 | ||
89 | ||
90 | //_____________________________________________________________________________ | |
91 | const TObject* AliRunDataStorage::Get(const char* name, Int_t runNumber) | |
92 | { | |
93 | // get an object from the data base | |
f05209ee | 94 | // (AliRunDataStorage is NOT the owner of the returned object) |
95 | // name must be in the form "Detector/DBType/DetSpecType" | |
96 | // es: "ZDC/Calib/Pedestals" | |
2c8628dd | 97 | |
f05209ee | 98 | AliSelectionMetaData defaultMetaData; |
99 | AliSelectionMetaData* selectedMetaData = &defaultMetaData; | |
2c8628dd | 100 | |
101 | // look for a meta data selection | |
102 | for (Int_t i = 0; i < fSelection.GetEntriesFast(); i++) { | |
f05209ee | 103 | AliSelectionMetaData* selection = (AliSelectionMetaData*) fSelection[i]; |
2c8628dd | 104 | if (!selection) continue; |
105 | if (selection->Matches(name, runNumber)) { | |
106 | selectedMetaData = selection; | |
107 | } | |
108 | } | |
109 | ||
110 | // get the entry | |
f05209ee | 111 | AliSelectionMetaData selMetaData(*selectedMetaData); |
112 | selMetaData.SetName(name); | |
113 | AliRunData* entry = GetEntry(selMetaData, runNumber); | |
2c8628dd | 114 | if (entry) { |
115 | AliDebug(2, "got the entry:"); | |
116 | ToAliDebug(2, entry->Dump()); | |
117 | } else { | |
118 | AliDebug(2, Form("got no entry for %s", name)); | |
119 | } | |
120 | ||
121 | // update array of current entries | |
f05209ee | 122 | if (!entry) return NULL; |
2c8628dd | 123 | TObject* oldEntry = fEntries.FindObject(entry->GetName()); |
124 | if (oldEntry) { | |
125 | delete fEntries.Remove(oldEntry); | |
126 | } | |
127 | fEntries.Add(entry); | |
128 | ||
f05209ee | 129 | // record entry to a file (in the same way as AliRunDataFile::PutEntry, |
130 | // so that the file can be opened as a AliRunDataFile!) | |
131 | ||
2c8628dd | 132 | if (fRecordFile) { |
2c8628dd | 133 | fRecordFile->cd(); |
f05209ee | 134 | TDirectory* saveDir = gDirectory; |
135 | ||
136 | // go to or create the directory | |
137 | TString strname(name); | |
138 | while (strname.BeginsWith("/")) strname.Remove(0); | |
139 | TDirectory* dir = fRecordFile; | |
140 | Int_t index = -1; | |
141 | while ((index = strname.Index("/")) >= 0) { | |
142 | TString dirName(strname(0, index)); | |
143 | if ((index > 0) && !dir->Get(dirName)) dir->mkdir(dirName); | |
144 | dir->cd(dirName); | |
145 | dir = gDirectory; | |
146 | strname.Remove(0, index+1); | |
147 | } | |
148 | ||
149 | entry->Write(strname); | |
150 | if (saveDir) saveDir->cd(); else gROOT->cd(); | |
151 | ||
2c8628dd | 152 | } |
f05209ee | 153 | |
154 | return (entry->GetObject())->Clone(); | |
2c8628dd | 155 | |
2c8628dd | 156 | } |
157 | ||
158 | ||
159 | //_____________________________________________________________________________ | |
160 | Bool_t AliRunDataStorage::Put(const TObject* object, | |
f05209ee | 161 | const AliObjectMetaData& objMetaData) |
2c8628dd | 162 | { |
163 | // put an object into the data base | |
164 | // (AliRunDataStorage does not adopt the object) | |
f05209ee | 165 | // location of where the object is stored is defined by |
166 | // the AliObjectMetaData's name ("Detector/DBType/DetSpecType") | |
167 | // and run Range. Storage is handled by the PutEntry method | |
168 | // of the current AliRunDataStorage instance. | |
2c8628dd | 169 | |
170 | if (!object) return kFALSE; | |
f05209ee | 171 | AliRunData entry(object->Clone(), objMetaData); |
2c8628dd | 172 | return PutEntry(&entry); |
173 | } | |
174 | ||
175 | //_____________________________________________________________________________ | |
176 | Bool_t AliRunDataStorage::PutEntry(AliRunData* entry) | |
177 | { | |
178 | // put an object into the data base | |
f05209ee | 179 | // Refer to the specific method of the current AliRunDataStorage instance |
180 | // (AliRunDataFile, AliRunDataOrganizedFile, AliRunDataAlien) | |
2c8628dd | 181 | |
182 | if (!entry) return kFALSE; | |
183 | AliError(Form("This is a read only data base. " | |
184 | "The object %s was not inserted", entry->GetName())); | |
185 | return kFALSE; | |
186 | } | |
187 | ||
188 | ||
189 | //_____________________________________________________________________________ | |
f05209ee | 190 | void AliRunDataStorage::Select(const AliSelectionMetaData& selMetaData) |
2c8628dd | 191 | { |
192 | // add some meta data selection criteria | |
193 | ||
f05209ee | 194 | fSelection.Add(new AliSelectionMetaData(selMetaData)); |
2c8628dd | 195 | } |
196 | ||
197 | ||
198 | //_____________________________________________________________________________ | |
199 | Bool_t AliRunDataStorage::RecordToFile(const char* fileName) | |
200 | { | |
201 | // record entries retrieved from the data base to a file with the given name | |
202 | ||
203 | if (fRecordFile) { | |
204 | fRecordFile->Close(); | |
205 | delete fRecordFile; | |
206 | } | |
207 | ||
208 | TDirectory* dir = gDirectory; | |
209 | fRecordFile = TFile::Open(fileName, "UPDATE"); | |
210 | if (dir) dir->cd(); else gROOT->cd(); | |
211 | if (!fRecordFile || !fRecordFile->IsOpen()) { | |
212 | AliError(Form("could not open file %s", fileName)); | |
213 | delete fRecordFile; | |
214 | fRecordFile = NULL; | |
215 | return kFALSE; | |
216 | } | |
217 | return kTRUE; | |
218 | } | |
219 | ||
220 | ||
221 | //_____________________________________________________________________________ | |
222 | AliRunDataStorage* AliRunDataStorage::Instance() | |
223 | { | |
f05209ee | 224 | // return the current instance of the DB (AliRunDataFile, AliRunOrganizedDataFile...) |
225 | // Example of usage: after creating an istance of AliRunDataStorage: | |
226 | // AliRunDataStorage::Instance()->Get(...) | |
2c8628dd | 227 | |
228 | return fgInstance; | |
229 | } | |
f05209ee | 230 | |
231 | ||
232 | //_____________________________________________________________________________ | |
233 | const AliObjectMetaData& AliRunDataStorage::GetObjectMetaData(const char* name) | |
234 | { | |
235 | // Returns the object's metadata of the already retrieved object | |
236 | // (useful, for example, if you want to know the format of the object you have | |
237 | // retrieved) | |
238 | ||
239 | AliRunData *entry = (AliRunData*) fEntries.FindObject(name); | |
240 | if(!entry){ | |
241 | AliError(Form("Entry %s not found! You make me crash!",name)); | |
242 | } | |
243 | return entry->GetObjectMetaData(); | |
244 | ||
245 | } |