| # Gaudi Framework, version v22r4 |

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# SmartDataStorePtr.h File Reference

`#include "GaudiKernel/SmartDataObjectPtr.h"`
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## Classes
class | SmartDataStorePtr< TYPE, LOADER >
| A small class used to access easily (and efficiently) data items residing in data stores. More...
## Functions
template<class A , class LDA , class B , class LDB >
bool | operator&& (SmartDataStorePtr< A, LDA > &object_1, SmartDataStorePtr< B, LDB > &object_2)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks && mcvertices ) { ...
template<class B , class LDB >
bool | operator&& (bool test, SmartDataStorePtr< B, LDB > &object)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...
template<class B , class LDB >
bool | operator&& (SmartDataStorePtr< B, LDB > &object, bool test)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...
template<class A , class LDA , class B , class LDB >
bool | operator|| (SmartDataStorePtr< A, LDA > &object_1, SmartDataStorePtr< B, LDB > &object_2)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartDataPtr<MCParticleVector> mctracks (evt,"/MC/MCParticles"); if ( mctracks || mcvertices ) { ...
template<class B , class LDB >
bool | operator|| (bool test, SmartDataStorePtr< B, LDB > &object)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...
template<class B , class LDB >
bool | operator|| (SmartDataStorePtr< B, LDB > &object, bool test)
| Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...

## Function Documentation

template<class A , class LDA , class B , class LDB >

bool operator&& | ( | SmartDataStorePtr< A, LDA > & | object_1,
|  | SmartDataStorePtr< B, LDB > & | object_2
| ) |  |

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

} and tests the existence of BOTH objects in the data store.

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 150 of file SmartDataStorePtr.h.

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

template<class B , class LDB >

bool operator&& | ( | bool | test,
|  | SmartDataStorePtr< B, LDB > & | object
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...

if ( test && mcvertices ) { ... } and tests the existence of BOTH objects in the data store.

Parameters:

  test | First boolean to test
  object | Smart pointer to second object

Returns:
  Boolean indicating existence of both objects

Definition at line 170 of file SmartDataStorePtr.h.

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

template<class B , class LDB >

bool operator&& | ( | SmartDataStorePtr< B, LDB > & | object,
|  | bool | test
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...

if ( test && mcvertices ) { ... } and tests the existence of BOTH objects in the data store.

Parameters:

  object | Smart pointer to second object
  test | Second boolean to test

Returns:
  Boolean indicating existence of both objects

Definition at line 190 of file SmartDataStorePtr.h.

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

template<class A , class LDA , class B , class LDB >

bool operator|| | ( | SmartDataStorePtr< A, LDA > & | object_1,
|  | SmartDataStorePtr< B, LDB > & | object_2
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); SmartDataPtr<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.

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 214 of file SmartDataStorePtr.h.

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

template<class B , class LDB >

bool operator|| | ( | bool | test,
|  | SmartDataStorePtr< B, LDB > & | object
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...

if ( test || mcvertices ) { ... } and tests the existence of BOTH objects in the data store.

Parameters:

  test | First boolean to test
  object | Smart pointer to second object

Returns:
  Boolean indicating existence of both objects

Definition at line 236 of file SmartDataStorePtr.h.

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

template<class B , class LDB >

bool operator|| | ( | SmartDataStorePtr< B, LDB > & | object,
|  | bool | test
| ) |  |

Helper to test Smart data objects efficiently This construct allows statements like: SmartDataPtr<MCVertexVector> mcvertices (evt,"/MC/MCVertices"); bool test = ...

if ( test && mcvertices ) { ... } and tests the existence of BOTH objects in the data store.

Parameters:

  object | Smart pointer to second object
  test | Second boolean to test

Returns:
  Boolean indicating existence of both objects

Definition at line 257 of file SmartDataStorePtr.h.

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

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