| # Gaudi Framework, version v22r4 |

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# SmartDataObjectPtr.cpp File Reference

`#include "GaudiKernel/DataObject.h"`
`#include "GaudiKernel/IDataProviderSvc.h"`
`#include "GaudiKernel/SmartDataObjectPtr.h"`
Include dependency graph for SmartDataObjectPtr.cpp:

Go to the source code of this file.

## Defines
#define | GAUDIKERNEL_SMARTDATAOBJECTPTR_CPP 1
## Functions
bool | operator&& (SmartDataObjectPtr &object_1, SmartDataObjectPtr &object_2)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartEvtDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartEvtDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks && mcvertices ) { ...
bool | operator|| (SmartDataObjectPtr &object_1, SmartDataObjectPtr &object_2)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartEvtDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartEvtDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks || mcvertices ) { ...

## Define Documentation

#define GAUDIKERNEL_SMARTDATAOBJECTPTR_CPP 1

Definition at line 11 of file SmartDataObjectPtr.cpp.

## Function Documentation

bool operator&& | ( | SmartDataObjectPtr & | object_1,
|  | SmartDataObjectPtr & | object_2
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartEvtDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartEvtDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks && mcvertices ) { ...

} and tests the existence of BOTH objects in the data store. This is not done inline due to danger of code explosion.

Parameters:

  object_1 | Smart pointer to object 1
  object_2 | Smart pointer to second object

Returns:
  Boolean indicating existence of both objects

Definition at line 145 of file SmartDataObjectPtr.cpp.

                                                                                  {
      if ( 0 != object_1.accessData() )    {      // Test existence of the first object
        if ( 0 != object_2.accessData() )    {    // Test existence of the second object
          return true;                            // Fine: Both objects exist
        }
      }
      return false;                               // Tough luck: One is missing.
    }

bool operator|| | ( | SmartDataObjectPtr & | object_1,
|  | SmartDataObjectPtr & | object_2
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartEvtDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartEvtDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks || mcvertices ) { ...

} and tests the existence of at least one objects in the data store. The second object will then NOT be loaded. It is assumed that the second choice is only an alternative usable in case the first object cannot be retrieved.

This is not done inline due to danger of code explosion.

Parameters:

  object_1 | Smart pointer to object 1
  object_2 | Smart pointer to second object

Returns:
  Boolean indicating existence of both objects

Definition at line 170 of file SmartDataObjectPtr.cpp.

                                                                                  {
      if ( 0 != object_1.accessData() )    {      // Test existence of the first object
        return true;
      }
      if ( 0 != object_2.accessData() )    {      // Test existence of the second object
        return true;
      }
      return false;                               // Tough luck: Both are missing.
    }

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