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ROOT
6.07/01
Reference Guide
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Class defining interface to a TTree query result with the same interface as for SQL databases.
A TTreeResult is returned by TTree::Query() (actually TTreePlayer::Query()).
Related classes are TTreeRow.
Definition at line 36 of file TTreeResult.h.
Public Member Functions | |
TTreeResult () | |
TTreeResult (Int_t nfields) | |
Create a query result object. More... | |
virtual | ~TTreeResult () |
Cleanup result object. More... | |
void | Close (Option_t *option="") |
Close query result. More... | |
Int_t | GetFieldCount () |
Get number of fields in result. More... | |
const char * | GetFieldName (Int_t field) |
Get name of specified field. More... | |
TObjArray * | GetRows () const |
TSQLRow * | Next () |
Get next query result row. More... | |
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virtual | ~TSQLResult () |
virtual Int_t | GetRowCount () const |
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TObject () | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Clear (Option_t *="") |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare abstract method. More... | |
virtual void | Copy (TObject &object) const |
Copy this to obj. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current pad. More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual Option_t * | GetOption () const |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
virtual Bool_t | IsSortable () const |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual void | Print (Option_t *option="") const |
This method must be overridden when a class wants to print itself. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. More... | |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
void * | operator new (size_t sz) |
void * | operator new[] (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz, void *vp) |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
void | ResetBit (UInt_t f) |
Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
void | InvertBit (UInt_t f) |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
Private Member Functions | |
Bool_t | IsValid (Int_t field) |
Check if result set is open and field index within range. More... | |
void | AddField (Int_t field, const char *fieldname) |
Add field name to result set. More... | |
void | AddRow (TSQLRow *row) |
Adopt a row to result set. More... | |
Private Attributes | |
Int_t | fColumnCount |
TString * | fFields |
TObjArray * | fResult |
Int_t | fNextRow |
Friends | |
class | TTreePlayer |
Additional Inherited Members | |
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enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
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static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
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TSQLResult () | |
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void | MakeZombie () |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
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Int_t | fRowCount |
#include <TTreeResult.h>
TTreeResult::TTreeResult | ( | ) |
TTreeResult::TTreeResult | ( | Int_t | nfields | ) |
Create a query result object.
Definition at line 42 of file TTreeResult.cxx.
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Cleanup result object.
Definition at line 54 of file TTreeResult.cxx.
Add field name to result set.
This is an internal method that is not exported via the abstract interface and that should not be user called.
Definition at line 140 of file TTreeResult.cxx.
Referenced by TTreePlayer::Query().
Adopt a row to result set.
This is an internal method that is not exported via the abstract interface and that should not be user called.
Definition at line 152 of file TTreeResult.cxx.
Referenced by TTreePlayer::Query().
Close query result.
Implements TSQLResult.
Definition at line 65 of file TTreeResult.cxx.
Referenced by ~TTreeResult().
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Get number of fields in result.
Implements TSQLResult.
Definition at line 95 of file TTreeResult.cxx.
Referenced by IsValid().
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Definition at line 58 of file TTreeResult.h.
Check if result set is open and field index within range.
Definition at line 79 of file TTreeResult.cxx.
Referenced by AddField(), and GetFieldName().
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Get next query result row.
The returned object must be deleted by the user and becomes invalid when the result set is closed or deleted.
Implements TSQLResult.
Definition at line 120 of file TTreeResult.cxx.
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Definition at line 38 of file TTreeResult.h.
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Definition at line 41 of file TTreeResult.h.
Referenced by GetFieldCount(), and TTreeResult().
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Definition at line 42 of file TTreeResult.h.
Referenced by AddField(), GetFieldName(), TTreeResult(), and ~TTreeResult().
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Definition at line 44 of file TTreeResult.h.
Referenced by Next(), and TTreeResult().
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Definition at line 43 of file TTreeResult.h.
Referenced by AddRow(), Close(), GetFieldCount(), GetRows(), IsValid(), Next(), TTreeResult(), and ~TTreeResult().