|
struct | ROOT::Internal::TreeUtils::RFriendInfo |
| Information about friend trees of a certain TTree or TChain object. More...
|
|
class | TBasket |
| Manages buffers for branches of a Tree. More...
|
|
class | TBasketSQL |
| Implement TBasket for a SQL backend. More...
|
|
class | TBranch |
| A TTree is a list of TBranches. More...
|
|
class | TBranchClones |
| A Branch for the case of an array of clone objects. More...
|
|
class | TBranchElement |
| A Branch for the case of an object. More...
|
|
class | TBranchObject |
| A Branch for the case of an object. More...
|
|
class | TBranchRef |
| A branch containing and managing a TRefTable for TRef autoloading. More...
|
|
class | TBranchSTL |
| A Branch handling STL collection of pointers (vectors, lists, queues, sets and multisets) while storing them in split mode. More...
|
|
class | TBufferSQL |
| Implement TBuffer for a SQL backend. More...
|
|
class | TChain |
| A chain is a collection of files containing TTree objects. More...
|
|
class | TChainElement |
| A TChainElement describes a component of a TChain. More...
|
|
class | TCollectionMethodBrowsable |
| TCollectionMethodBrowsable extends TCollectionPropertyBrowsable by showing all methods of the collection itself. More...
|
|
class | TCollectionPropertyBrowsable |
| A tiny browser helper object (and its generator) for adding a virtual (as in "not actually part of the class", not in C++ virtual) "@size()" method to a collection. More...
|
|
class | TCut |
| A specialized string object used for TTree selections. More...
|
|
class | TEntryList |
| A List of entry numbers in a TTree or TChain. More...
|
|
class | TEntryListArray |
| A list of entries and subentries in a TTree or TChain. More...
|
|
class | TEntryListBlock |
| Used by TEntryList to store the entry numbers. More...
|
|
class | TEntryListFromFile |
| Manages entry lists from different files, when they are not loaded in memory at the same time. More...
|
|
class | TEventList |
| A TEventList object is a list of selected events (entries) in a TTree. More...
|
|
class | TFriendElement |
| A TFriendElement TF describes a TTree object TF in a file. More...
|
|
class | ROOT::TIOFeatures |
| TIOFeatures provides the end-user with the ability to change the IO behavior of data written via a TTree . More...
|
|
class | TLeaf |
| A TLeaf describes individual elements of a TBranch See TBranch structure in TTree. More...
|
|
class | TLeafB |
| A TLeaf for an 8 bit Integer data type. More...
|
|
class | TLeafC |
| A TLeaf for a variable length string. More...
|
|
class | TLeafD |
| A TLeaf for a 64 bit floating point data type. More...
|
|
class | TLeafD32 |
| A TLeaf for a 24 bit truncated floating point data type. More...
|
|
class | TLeafElement |
| A TLeaf for the general case when using the branches created via a TStreamerInfo (i.e. More...
|
|
class | TLeafF |
| A TLeaf for a 32 bit floating point data type. More...
|
|
class | TLeafF16 |
| A TLeaf for a 24 bit truncated floating point data type. More...
|
|
class | TLeafG |
| A TLeaf for a 64 bit Integer data type. More...
|
|
class | TLeafI |
| A TLeaf for an Integer data type. More...
|
|
class | TLeafL |
| A TLeaf for a 64 bit Integer data type. More...
|
|
class | TLeafO |
| A TLeaf for a bool data type. More...
|
|
class | TLeafObject |
| A TLeaf for a general object derived from TObject. More...
|
|
class | TLeafS |
| A TLeaf for a 16 bit Integer data type. More...
|
|
class | TMethodBrowsable |
| This helper object allows the browsing of methods of objects stored in branches. More...
|
|
class | TNonSplitBrowsable |
| Allows a TBrowser to browse non-split branches as if they were split. More...
|
|
class | TNtuple |
| A simple TTree restricted to a list of float variables only. More...
|
|
class | TNtupleD |
| A simple TTree restricted to a list of double variables only. More...
|
|
class | TQueryResult |
| A container class for query results. More...
|
|
class | TreeUtils |
| Different standalone functions to work with trees and tuples, not reqiuired to be a member of any class. More...
|
|
class | TSelector |
| A TSelector object is used by the TTree::Draw, TTree::Scan, TTree::Process to navigate in a TTree and make selections. More...
|
|
class | TSelectorList |
| A TList derived class that makes sure that objects added to it are not linked to the currently open file (like histograms, eventlists and trees). More...
|
|
class | TSelectorScalar |
| Named scalar type, based on Long64_t, streamable, storable and mergeable. More...
|
|
class | TTree |
| A TTree represents a columnar dataset. More...
|
|
class | TTreeCache |
| A cache to speed-up the reading of ROOT datasets. More...
|
|
class | TTreeCacheUnzip |
| A TTreeCache which exploits parallelized decompression of its own content. More...
|
|
class | TTreeCloner |
| Class implementing or helping the various TTree cloning method. More...
|
|
class | TTreeResult |
| Class defining interface to a TTree query result with the same interface as for SQL databases. More...
|
|
class | TTreeRow |
| Class defining interface to a row of a TTree query result. More...
|
|
class | TTreeSQL |
| A TTree object is a list of TBranch. More...
|
|
class | TVirtualBranchBrowsable |
| TVirtualBranchBrowsable is a base class (not really abstract, but useless by itself) for helper objects that extend TBranch's browsing support. More...
|
|
class | TVirtualIndex |
| Abstract interface for Tree Index. More...
|
|
class | TVirtualTreePlayer |
| Abstract base class defining the interface for the plugins that implement Draw, Scan, Process, MakeProxy, etc. More...
|
|
Get and store the names, aliases and file names of the direct friends of the tree.
- Parameters
-
[in] | tree | The tree from which friends information will be gathered. |
- Exceptions
-
std::runtime_error | If the input tree has a list of friends, but any of them could not be associated with any file. |
Calls TTree::GetListOfFriends and parses its result for the names, aliases and file names, with different methodologies depending on whether the parameter is a TTree or a TChain.
- Note
- This function only retrieves information about direct friends of the input tree. It will not recurse through friends of friends and does not take into account circular references in the list of friends of the input tree.
- Returns
- An RFriendInfo struct, containing the information parsed from the list of friends. The struct will contain three vectors, which elements at position
i
represent the i
-th friend of the input tree. If this friend is a TTree, the i
-th element of each of the three vectors will contain respectively:
- A pair with the name and alias of the tree (the alias might not be present, in which case it will be just an empty string).
- A vector with a single string representing the path to current file where the tree is stored.
- An empty vector.
If the i
-th friend is a TChain instead, the i
-th element of each of the three vectors will contain respectively:
- A pair with the name and alias of the chain (if present, both might be empty strings).
- A vector with all the paths to the files contained in the chain.
- A vector with all the the names of the trees making up the chain, associated with the file names of the previous vector.
Definition at line 155 of file InternalTreeUtils.cxx.