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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 | ||
11026a80 | 42 | #include "Riostream.h" |
43 | ||
d3106602 | 44 | #include "TClass.h" |
327eaf46 | 45 | #include "TTree.h" |
11026a80 | 46 | //#include "AliLog.h" |
d3106602 | 47 | |
48 | #include "AliAnalysisDataSlot.h" | |
49 | #include "AliAnalysisTask.h" | |
50 | #include "AliAnalysisDataContainer.h" | |
51 | ||
52 | ClassImp(AliAnalysisDataSlot) | |
53 | ||
37a26056 | 54 | //______________________________________________________________________________ |
55 | AliAnalysisDataSlot& AliAnalysisDataSlot::operator=(const AliAnalysisDataSlot &slot) | |
56 | { | |
57 | // Assignment | |
58 | if (&slot == this) return *this; | |
59 | TObject::operator=(slot); | |
60 | fType = slot.fType; | |
61 | fParent = slot.fParent; | |
62 | fContainer = slot.fContainer; | |
63 | return *this; | |
64 | } | |
65 | ||
d3106602 | 66 | //______________________________________________________________________________ |
67 | Bool_t AliAnalysisDataSlot::ConnectContainer(AliAnalysisDataContainer *cont) | |
68 | { | |
69 | // Connect the data slot with a given container. The operation will succeed only | |
70 | // if the type defined by the slot inherits from the type enforced by the container. | |
71 | // The error message in case of failure is posted by the caller. | |
72 | if (!cont || !fType) return kFALSE; | |
73 | if (!fType->InheritsFrom(cont->GetType())) { | |
11026a80 | 74 | cout<<"Data slot of type "<<fType->GetName()<<" of task "<<fParent->GetName()<<" cannot be connected to data container "<<cont->GetName()<<" of type "<<cont->GetType()->GetName()<<endl; |
75 | //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 | 76 | return kFALSE; |
77 | } | |
78 | fContainer = cont; | |
79 | return kTRUE; | |
80 | } | |
81 | ||
327eaf46 | 82 | //______________________________________________________________________________ |
83 | void *AliAnalysisDataSlot::GetBranchAddress(const char *branchname) const | |
84 | { | |
85 | // Retrieve the address for a given branch. One should always test this before | |
86 | // using SetBranchAddress because the address gets set by the first caller. | |
87 | // Call this in MyTask::Init() | |
88 | if (!fType->InheritsFrom(TTree::Class())) { | |
11026a80 | 89 | cout<<"Cannot call GetBranchAddress() for data slot of task "<<fParent->GetName()<<" not pointing to tree-type data"<<endl; |
90 | //AliFatal(Form("Cannot call GetBranchAddress() for data slot of task %s not pointing to tree-type data", fParent->GetName())); | |
327eaf46 | 91 | return NULL; |
92 | } | |
93 | if (!IsDataReady()) { | |
11026a80 | 94 | cout<<"Cannot call GetBranchAddress() for data slot of task "<<fParent->GetName()<<" while data is not ready"<<endl; |
95 | //AliFatal(Form("Cannot call GetBranchAddress() for data slot of task %s while data is not ready", fParent->GetName())); | |
327eaf46 | 96 | return NULL; |
97 | } | |
98 | TTree *tree = (TTree*)GetData(); | |
99 | TBranch *br = tree->GetBranch(branchname); | |
100 | if (!br) { | |
11026a80 | 101 | cout<<"Branch "<<branchname<<" not found in tree "<<tree->GetName()<<" as input of task "<<fParent->GetName()<<"..."<<endl; |
102 | //AliFatal(Form("Branch %s not found in tree %s as input of task %s...", branchname, tree->GetName(), fParent->GetName())); | |
327eaf46 | 103 | return NULL; |
104 | } | |
105 | return br->GetAddress(); | |
106 | } | |
107 | ||
108 | //______________________________________________________________________________ | |
109 | Bool_t AliAnalysisDataSlot::SetBranchAddress(const char *branchname, void *address) | |
110 | { | |
111 | // Set a branch address for input tree. To be called during MyTask::Init() | |
112 | // only if GetBranchAddress() returns a NULL pointer for a tree-type slot. | |
113 | if (GetBranchAddress(branchname)) { | |
11026a80 | 114 | cout<<"Branch address for "<<branchname<<" already set by other task. Call first GetBranchAddress() in "<<fParent->GetName()<<"::Init()"<<endl; |
115 | //AliError(Form("Branch address for %s already set by other task. Call first GetBranchAddress() in %s::Init()",branchname, fParent->GetName())); | |
327eaf46 | 116 | return kFALSE; |
117 | } | |
118 | TTree *tree = (TTree*)GetData(); | |
119 | tree->SetBranchAddress(branchname, address); | |
120 | return kTRUE; | |
121 | } | |
122 | ||
d3106602 | 123 | //______________________________________________________________________________ |
124 | TObject *AliAnalysisDataSlot::GetData() const | |
125 | { | |
126 | // Retreives the data from the container if it is ready. | |
127 | if (!fContainer) { | |
11026a80 | 128 | cout<<"Data slot of type "<<fType->GetName()<<" of task "<<fParent->GetName()<<" has no connected data container"<<endl; |
129 | //AliError(Form("Data slot of type %s of task %s has no connected data container",fType->GetName(), fParent->GetName())); | |
d3106602 | 130 | return NULL; |
131 | } | |
132 | if (!fContainer->IsDataReady()) return NULL; | |
133 | return fContainer->GetData(); | |
134 | } | |
135 | ||
136 | //______________________________________________________________________________ | |
137 | Bool_t AliAnalysisDataSlot::IsDataReady() const | |
138 | { | |
139 | // Check if data for this slot is ready in its container. | |
140 | if (!fContainer) { | |
11026a80 | 141 | cout<<"Data slot of type "<<fType->GetName()<<" of task "<<fParent->GetName()<<" has no connected data container"<<endl; |
142 | //AliError(Form("Data slot of type %s of task %s has no connected data container",fType->GetName(), fParent->GetName())); | |
d3106602 | 143 | return kFALSE; |
144 | } | |
145 | return fContainer->IsDataReady(); | |
146 | } | |
147 |