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d3106602 | 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 | // Author: Andrei Gheata, 31/05/2006 | |
18 | ||
19 | //============================================================================== | |
20 | // AliAnalysysDataSlot - Class representing a data slot of an analysis task. | |
21 | // An analysis slot enforces a certain data type required by the Exec() | |
22 | // method of the analysis task. The slot must be connected to a data | |
23 | // container with data of the same type. | |
24 | // | |
25 | // The class should not be directly created by users - it is created by | |
26 | // each AliAnalysisTask when defining its input/output slots using: | |
27 | // | |
28 | // AliAnalysisTask::SetInput(Int_t index, TClass *type); | |
29 | // AliAnalysisTask::SetOutput(TClass *type); | |
30 | // | |
31 | // An existing data contaner (AliAnalysisDataContainer) can be connected to the | |
32 | // input/output slots of an analysis task using: | |
33 | // | |
34 | // AliAnalysisModule::ConnectInput(AliAnalysisTask *task, Int_t islot, | |
35 | // AliAnalysisDataContainer *cont) | |
36 | // AliAnalysisModule::ConnectOutput(AliAnalysisTask *task, | |
37 | // AliAnalysisDataContainer *cont) | |
38 | // To connect a slot to a data container, the data types declared by both must | |
39 | // match. | |
40 | //============================================================================== | |
41 | ||
c52c2132 | 42 | #include <Riostream.h> |
43 | #include <TROOT.h> | |
44 | #include <TClass.h> | |
45 | #include <TTree.h> | |
d3106602 | 46 | |
47 | #include "AliAnalysisDataSlot.h" | |
48 | #include "AliAnalysisTask.h" | |
49 | #include "AliAnalysisDataContainer.h" | |
50 | ||
51 | ClassImp(AliAnalysisDataSlot) | |
52 | ||
c52c2132 | 53 | //______________________________________________________________________________ |
54 | AliAnalysisDataSlot::AliAnalysisDataSlot(TClass *type, AliAnalysisTask *task) | |
55 | :TNamed(), | |
56 | fType(type), | |
57 | fParent(task), | |
58 | fContainer(NULL) | |
59 | { | |
60 | // Default constructor. | |
61 | SetTitle(fType->GetName()); | |
62 | } | |
63 | ||
64 | //______________________________________________________________________________ | |
65 | AliAnalysisDataSlot::AliAnalysisDataSlot(const AliAnalysisDataSlot &slot) | |
66 | :TNamed(slot), | |
67 | fType(NULL), | |
68 | fParent(slot.fParent), | |
69 | fContainer(slot.fContainer) | |
70 | { | |
71 | // Copy ctor. | |
72 | GetType(); | |
73 | } | |
74 | ||
37a26056 | 75 | //______________________________________________________________________________ |
76 | AliAnalysisDataSlot& AliAnalysisDataSlot::operator=(const AliAnalysisDataSlot &slot) | |
77 | { | |
78 | // Assignment | |
79 | if (&slot == this) return *this; | |
c52c2132 | 80 | TNamed::operator=(slot); |
81 | GetType(); | |
37a26056 | 82 | fParent = slot.fParent; |
83 | fContainer = slot.fContainer; | |
84 | return *this; | |
85 | } | |
86 | ||
d3106602 | 87 | //______________________________________________________________________________ |
88 | Bool_t AliAnalysisDataSlot::ConnectContainer(AliAnalysisDataContainer *cont) | |
89 | { | |
90 | // Connect the data slot with a given container. The operation will succeed only | |
91 | // if the type defined by the slot inherits from the type enforced by the container. | |
92 | // The error message in case of failure is posted by the caller. | |
c52c2132 | 93 | if (!cont || !GetType()) return kFALSE; |
d3106602 | 94 | if (!fType->InheritsFrom(cont->GetType())) { |
c52c2132 | 95 | cout<<"Data slot of type "<<GetTitle()<<" of task "<<fParent->GetName()<<" cannot be connected to data container "<<cont->GetName()<<" of type "<<cont->GetTitle()<<endl; |
11026a80 | 96 | //AliError(Form("Data slot of type %s of task %s cannot be connected to data container %s of type %s", fType->GetName(), fParent->GetName(), cont->GetName(), cont->GetType()->GetName())); |
d3106602 | 97 | return kFALSE; |
98 | } | |
99 | fContainer = cont; | |
100 | return kTRUE; | |
101 | } | |
102 | ||
c52c2132 | 103 | //______________________________________________________________________________ |
104 | TClass *AliAnalysisDataSlot::GetType() const | |
105 | { | |
106 | // Get class type for this slot. | |
107 | AliAnalysisDataSlot *slot = (AliAnalysisDataSlot*)this; | |
108 | if (!fType) slot->SetType(gROOT->GetClass(fTitle.Data())); | |
109 | if (!fType) printf("AliAnalysisDataSlot: Unknown class: %s\n", GetTitle()); | |
110 | return fType; | |
111 | } | |
112 | ||
327eaf46 | 113 | //______________________________________________________________________________ |
114 | void *AliAnalysisDataSlot::GetBranchAddress(const char *branchname) const | |
115 | { | |
116 | // Retrieve the address for a given branch. One should always test this before | |
117 | // using SetBranchAddress because the address gets set by the first caller. | |
118 | // Call this in MyTask::Init() | |
c52c2132 | 119 | if (!GetType()) return NULL; |
327eaf46 | 120 | if (!fType->InheritsFrom(TTree::Class())) { |
11026a80 | 121 | cout<<"Cannot call GetBranchAddress() for data slot of task "<<fParent->GetName()<<" not pointing to tree-type data"<<endl; |
122 | //AliFatal(Form("Cannot call GetBranchAddress() for data slot of task %s not pointing to tree-type data", fParent->GetName())); | |
327eaf46 | 123 | return NULL; |
124 | } | |
125 | if (!IsDataReady()) { | |
11026a80 | 126 | cout<<"Cannot call GetBranchAddress() for data slot of task "<<fParent->GetName()<<" while data is not ready"<<endl; |
127 | //AliFatal(Form("Cannot call GetBranchAddress() for data slot of task %s while data is not ready", fParent->GetName())); | |
327eaf46 | 128 | return NULL; |
129 | } | |
130 | TTree *tree = (TTree*)GetData(); | |
131 | TBranch *br = tree->GetBranch(branchname); | |
132 | if (!br) { | |
11026a80 | 133 | cout<<"Branch "<<branchname<<" not found in tree "<<tree->GetName()<<" as input of task "<<fParent->GetName()<<"..."<<endl; |
134 | //AliFatal(Form("Branch %s not found in tree %s as input of task %s...", branchname, tree->GetName(), fParent->GetName())); | |
327eaf46 | 135 | return NULL; |
136 | } | |
137 | return br->GetAddress(); | |
138 | } | |
139 | ||
140 | //______________________________________________________________________________ | |
141 | Bool_t AliAnalysisDataSlot::SetBranchAddress(const char *branchname, void *address) | |
142 | { | |
143 | // Set a branch address for input tree. To be called during MyTask::Init() | |
144 | // only if GetBranchAddress() returns a NULL pointer for a tree-type slot. | |
145 | if (GetBranchAddress(branchname)) { | |
11026a80 | 146 | cout<<"Branch address for "<<branchname<<" already set by other task. Call first GetBranchAddress() in "<<fParent->GetName()<<"::Init()"<<endl; |
147 | //AliError(Form("Branch address for %s already set by other task. Call first GetBranchAddress() in %s::Init()",branchname, fParent->GetName())); | |
327eaf46 | 148 | return kFALSE; |
149 | } | |
150 | TTree *tree = (TTree*)GetData(); | |
151 | tree->SetBranchAddress(branchname, address); | |
152 | return kTRUE; | |
153 | } | |
154 | ||
d3106602 | 155 | //______________________________________________________________________________ |
156 | TObject *AliAnalysisDataSlot::GetData() const | |
157 | { | |
158 | // Retreives the data from the container if it is ready. | |
159 | if (!fContainer) { | |
c52c2132 | 160 | cout<<"Data slot of type "<<GetTitle()<<" of task "<<fParent->GetName()<<" has no connected data container"<<endl; |
11026a80 | 161 | //AliError(Form("Data slot of type %s of task %s has no connected data container",fType->GetName(), fParent->GetName())); |
d3106602 | 162 | return NULL; |
163 | } | |
164 | if (!fContainer->IsDataReady()) return NULL; | |
165 | return fContainer->GetData(); | |
166 | } | |
167 | ||
168 | //______________________________________________________________________________ | |
169 | Bool_t AliAnalysisDataSlot::IsDataReady() const | |
170 | { | |
171 | // Check if data for this slot is ready in its container. | |
172 | if (!fContainer) { | |
c52c2132 | 173 | cout<<"Data slot of type "<<GetTitle()<<" of task "<<fParent->GetName()<<" has no connected data container"<<endl; |
11026a80 | 174 | //AliError(Form("Data slot of type %s of task %s has no connected data container",fType->GetName(), fParent->GetName())); |
d3106602 | 175 | return kFALSE; |
176 | } | |
177 | return fContainer->IsDataReady(); | |
178 | } | |
179 |