| # Gaudi Framework, version v22r2 |

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Public Member Functions | Static Public Member Functions | Static Private Member Functions

# GaudiPython::Helper Struct Reference

`#include <Helpers.h>`

List of all members.

## Public Member Functions
| Helper ()
## Static Public Member Functions
static IService * | service (ISvcLocator *svcloc, const std::string &name, bool createif=false)
static IAlgorithm * | algorithm (IAlgManager *algmgr, const std::string &name, const bool createIf=false)
static DataObject * | dataobject (IDataProviderSvc *dpsvc, const std::string &path)
static GAUDI_API DataObject * | findobject (IDataProviderSvc *dpsvc, const std::string &path)
| simple wrapper for IDataProviderSvc::findObject The methdod does NOT trigger the loading the object from tape or Data-On-Demand action
static GAUDI_API DataObject * | getobject (IDataProviderSvc *dpsvc, const std::string &path, const bool retrieve=true, const bool disableDoD=false)
| the generic function to get object from TES
static IAlgTool * | tool (IToolSvc *toolsvc, const std::string &type, const std::string &name, IInterface *p, bool cif)
static long | loadDynamicLib (const std::string &name)
static IHistogram1D * | histo1D (IHistogramSvc *hsvc, const std::string &path)
static IHistogram2D * | histo2D (IHistogramSvc *hsvc, const std::string &path)
static IHistogram3D * | histo3D (IHistogramSvc *hsvc, const std::string &path)
static IProfile1D * | profile1D (IHistogramSvc *hsvc, const std::string &path)
static IProfile2D * | profile2D (IHistogramSvc *hsvc, const std::string &path)
template<class T >
static PyObject * | toArray (T *ptr, Py_ssize_t size)
static PyObject * | toIntArray (void *ptr, Py_ssize_t size)
static PyObject * | toShortArray (void *ptr, Py_ssize_t size)
static PyObject * | toFloatArray (void *ptr, Py_ssize_t size)
static PyObject * | toDoubleArray (void *ptr, Py_ssize_t size)
template<class T >
static T * | toAddress (std::vector< T > &v)
template<class T >
static T * | toAddress (void *a)
## Static Private Member Functions
template<class T >
static Py_ssize_t | Array_length (PyObject *self)
template<class T >
static PyObject * | toPython (T *o)
static PyObject * | toPython (int *o)
static PyObject * | toPython (short *o)
static PyObject * | toPython (char *o)
static PyObject * | toPython (long *o)
static PyObject * | toPython (float *o)
static PyObject * | toPython (double *o)
template<class T >
static PyObject * | Array_item (PyObject *self, Py_ssize_t idx)

## Detailed Description

Definition at line 39 of file Helpers.h.

## Constructor & Destructor Documentation

GaudiPython::Helper::Helper | ( | ) | `[inline]`

Definition at line 43 of file Helpers.h.

    {}

## Member Function Documentation

static IAlgorithm* GaudiPython::Helper::algorithm | ( | IAlgManager * | algmgr,
|  | const std::string & | name,
|  | const bool | createIf = `false`
| ) |  | `[inline, static]`

Definition at line 50 of file Helpers.h.

      {
        return algmgr->algorithm(name, createIf).get();
      }

template<class T >

static PyObject* GaudiPython::Helper::Array_item | ( | PyObject * | self,
|  | Py_ssize_t | idx
| ) |  | `[inline, static, private]`

Definition at line 159 of file Helpers.h.

                                                                    {
    #if PY_VERSION_HEX < 0x02050000
        const
    #endif
        char* buf = 0;
        Py_ssize_t size = (*(self->ob_type->tp_as_buffer->bf_getcharbuffer))( self, 0, &buf );
        if ( idx < 0 || idx >= size/int(sizeof(T)) ) {
           PyErr_SetString( PyExc_IndexError, "buffer index out of range" );
           return 0;
        }
        return toPython((T*)buf + idx);
      }

template<class T >

static Py_ssize_t GaudiPython::Helper::Array_length | ( | PyObject * | self ) | `[inline, static, private]`

Definition at line 141 of file Helpers.h.

                                                       {
    #if PY_VERSION_HEX < 0x02050000
        const
    #endif
        char* buf = 0;
        Py_ssize_t size = (*(self->ob_type->tp_as_buffer->bf_getcharbuffer))( self, 0, &buf );
        return size/sizeof(T);
      }

static DataObject* GaudiPython::Helper::dataobject | ( | IDataProviderSvc * | dpsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 57 of file Helpers.h.

      {
        DataObject* o;
        if ( dpsvc->retrieveObject(path,o).isSuccess() ) return o;
        else return 0;
      }

DataObject * GaudiPython::Helper::findobject | ( | IDataProviderSvc * | dpsvc,
|  | const std::string & | path
| ) |  | `[static]`

simple wrapper for IDataProviderSvc::findObject The methdod does NOT trigger the loading the object from tape or Data-On-Demand action

See also:
  IDataProviderSvc
  IDataProviderSvc::findObject

Parameters:

  psvc | (INPUT) pointer to Data ProviderService
  path | the full path in TES

Returns:
  the object

Author:
  Vanya BELYAEV Ivan.Belyaev@nikhef.nl

Date:
  2009-10-09

Definition at line 41 of file Helpers.cpp.

    {
      DataObject* o = 0 ;
      if ( 0 == dpsvc     ) { return 0 ; }                              // RETURN
      StatusCode sc = dpsvc -> findObject ( path , o ) ;  // NB!
      if ( sc.isFailure() ) { return 0 ; }                              // RETURN
      return o ;                                                        // RETURN
    }

DataObject * GaudiPython::Helper::getobject | ( | IDataProviderSvc * | dpsvc,
|  | const std::string & | path,
|  | const bool | retrieve = `true`,
|  | const bool | disableDoD = `false`
| ) |  | `[static]`

the generic function to get object from TES

See also:
  IDataProviderSvc
  IDataProviderSvc::findObject
  IDataProviderSvc::retriveObject

Parameters:

  psvc | (INPUT) pointer to Data ProviderService
  path | the full path in TES
  rerieve | (INPUT) retrieve or find object ?
  disableDoD | (INPUT) disable 'on-demand-actions' ?

Author:
  Vanya BELYAEV Ivan.Belyaev@nikhef.nl

Date:
  2009-10-09

Definition at line 133 of file Helpers.cpp.

    {
      if ( 0 == dpsvc ) { return 0 ; }  // RETURN 0
      // create the sentry:
      Disabler sentry ( dpsvc , disable ) ;
      //
      DataObject * result = 0 ;
      //
      StatusCode sc =
        retrieve ?
        dpsvc -> retrieveObject ( path , result ) :
        dpsvc -> findObject     ( path , result ) ;
      //
      if ( sc.isFailure() ) { return 0 ; }                               // RETURN
      //
      return result ;                                                    // RETURN
    }

static IHistogram1D* GaudiPython::Helper::histo1D | ( | IHistogramSvc * | hsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 105 of file Helpers.h.

                                                                                 {
        IHistogram1D* h;
        if ( hsvc->findObject(path, h ).isSuccess() ) return h;
        else                                          return 0;
      }

static IHistogram2D* GaudiPython::Helper::histo2D | ( | IHistogramSvc * | hsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 110 of file Helpers.h.

                                                                                 {
        IHistogram2D* h;
        if ( hsvc->findObject(path, h ).isSuccess() ) return h;
        else                                          return 0;
      }

static IHistogram3D* GaudiPython::Helper::histo3D | ( | IHistogramSvc * | hsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 115 of file Helpers.h.

                                                                                 {
        IHistogram3D* h;
        if ( hsvc->findObject(path, h ).isSuccess() ) return h;
        else                                          return 0;
      }

static long GaudiPython::Helper::loadDynamicLib | ( | const std::string & | name ) | `[inline, static]`

Definition at line 101 of file Helpers.h.

                                                        {
        void* h;
        return System::loadDynamicLib(name, &h);
      }

static IProfile1D* GaudiPython::Helper::profile1D | ( | IHistogramSvc * | hsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 122 of file Helpers.h.

      {
        IProfile1D* h = 0 ;
        if ( 0 != hsvc && hsvc->findObject ( path , h ).isSuccess() ) { return h ; }
        return 0 ;
      }

static IProfile2D* GaudiPython::Helper::profile2D | ( | IHistogramSvc * | hsvc,
|  | const std::string & | path
| ) |  | `[inline, static]`

Definition at line 131 of file Helpers.h.

      {
        IProfile2D* h = 0 ;
        if ( 0 != hsvc && hsvc->findObject ( path , h ).isSuccess() ) { return h ; }
        return 0 ;
      }

static IService* GaudiPython::Helper::service | ( | ISvcLocator * | svcloc,
|  | const std::string & | name,
|  | bool | createif = `false`
| ) |  | `[inline, static]`

Definition at line 45 of file Helpers.h.

                                                                                                {
        return svcloc->service(name, createif).get();
      }

template<class T >

static T* GaudiPython::Helper::toAddress | ( | std::vector< T > & | v ) | `[inline, static]`

Definition at line 196 of file Helpers.h.

                                             {
        return &(*v.begin());
      }

template<class T >

template double * GaudiPython::Helper::toAddress< double > | ( | void * | a ) | `[inline, static]`

Definition at line 200 of file Helpers.h.

                                     {
        return (T*)a;
      }

template<class T >

static PyObject* GaudiPython::Helper::toArray | ( | T * | ptr,
|  | Py_ssize_t | size
| ) |  | `[inline, static]`

Definition at line 174 of file Helpers.h.

                                                          {
       static PyTypeObject      type = PyBuffer_Type;
       static PySequenceMethods meth = *(PyBuffer_Type.tp_as_sequence);
    #if PY_VERSION_HEX < 0x02050000
       meth.sq_item         = (intargfunc) &Array_item<T>;
       meth.sq_length       = (inquiry) &Array_length<T>;
    #else
       meth.sq_item         = (ssizeargfunc) &Array_item<T>;
       meth.sq_length       = (lenfunc) &Array_length<T>;
    #endif
       type.tp_as_sequence  = &meth;
       PyObject* buf = PyBuffer_FromReadWriteMemory( ptr, size*sizeof(T) );
       buf->ob_type = &type;
       Py_INCREF( buf->ob_type );
       return buf;
      }

static PyObject* GaudiPython::Helper::toDoubleArray | ( | void * | ptr,
|  | Py_ssize_t | size
| ) |  | `[inline, static]`

Definition at line 193 of file Helpers.h.

    { return toArray( (double*) ptr , size ); }

static PyObject* GaudiPython::Helper::toFloatArray | ( | void * | ptr,
|  | Py_ssize_t | size
| ) |  | `[inline, static]`

Definition at line 192 of file Helpers.h.

    { return toArray( (float*)  ptr , size ); }

static PyObject* GaudiPython::Helper::toIntArray | ( | void * | ptr,
|  | Py_ssize_t | size
| ) |  | `[inline, static]`

Definition at line 190 of file Helpers.h.

    { return toArray( (int*)    ptr , size ); }

static IAlgTool* GaudiPython::Helper::tool | ( | IToolSvc * | toolsvc,
|  | const std::string & | type,
|  | const std::string & | name,
|  | IInterface * | p,
|  | bool | cif
| ) |  | `[inline, static]`

Definition at line 96 of file Helpers.h.

                                                                                                                       {
        IAlgTool* o;
        if ( toolsvc->retrieve(type, name, IAlgTool::interfaceID(), o, p, cif).isSuccess() ) return o;
        else return 0;
      }

static PyObject* GaudiPython::Helper::toPython | ( | long * | o ) | `[inline, static, private]`

Definition at line 154 of file Helpers.h.

    { return PyInt_FromLong(*o); }

static PyObject* GaudiPython::Helper::toPython | ( | float * | o ) | `[inline, static, private]`

Definition at line 155 of file Helpers.h.

    { return PyFloat_FromDouble((double)*o); }

static PyObject* GaudiPython::Helper::toPython | ( | int * | o ) | `[inline, static, private]`

Definition at line 151 of file Helpers.h.

    { return PyInt_FromLong((long)*o); }

static PyObject* GaudiPython::Helper::toPython | ( | char * | o ) | `[inline, static, private]`

Definition at line 153 of file Helpers.h.

    { return PyInt_FromLong((long)*o); }

template<class T >

static PyObject* GaudiPython::Helper::toPython | ( | T * | o ) | `[inline, static, private]`

Definition at line 150 of file Helpers.h.

    { return 0; }

static PyObject* GaudiPython::Helper::toPython | ( | short * | o ) | `[inline, static, private]`

Definition at line 152 of file Helpers.h.

    { return PyInt_FromLong((long)*o); }

static PyObject* GaudiPython::Helper::toPython | ( | double * | o ) | `[inline, static, private]`

Definition at line 156 of file Helpers.h.

    { return PyFloat_FromDouble(*o); }

static PyObject* GaudiPython::Helper::toShortArray | ( | void * | ptr,
|  | Py_ssize_t | size
| ) |  | `[inline, static]`

Definition at line 191 of file Helpers.h.

    { return toArray( (short*)  ptr , size ); }

The documentation for this struct was generated from the following files:

- /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r2/GaudiPython/GaudiPython/Helpers.h
- /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r2/GaudiPython/src/Lib/Helpers.cpp

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