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IFileAccess Class Referenceabstract

Abstract interface for a service or tool implementing a read access to files. More...

`#include <GaudiKernel/IFileAccess.h>`

Inheritance diagram for IFileAccess:
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Collaboration diagram for IFileAccess:
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## Public Member Functions
| DeclareInterfaceID (IFileAccess, 2, 0)
| InterfaceID.
virtual | ~IFileAccess ()
virtual std::auto_ptr < std::istream > | open (const std::string &url)=0
| Find the URL and returns an auto_ptr to an input stream interface of an object that can be used to read from the file the URL is pointing to.
virtual const std::vector < std::string > & | protocols () const =0
| Protocols supported by the instance.
Public Member Functions inherited from IInterface
virtual void * | i_cast (const InterfaceID &) const =0
| main cast function
virtual std::vector< std::string > | getInterfaceNames () const =0
| Returns a vector of strings containing the names of all the implemented interfaces.
virtual unsigned long | addRef ()=0
| Increment the reference count of Interface instance.
virtual unsigned long | release ()=0
| Release Interface instance.
virtual unsigned long | refCount () const =0
| Current reference count.
virtual StatusCode | queryInterface (const InterfaceID &ti, void **pp)=0
| Set the void** to the pointer to the requested interface of the instance.
virtual | ~IInterface ()
| Virtual destructor.

## Additional Inherited Members
Public Types inherited from IInterface
enum | Status { SUCCESS = 1, NO_INTERFACE, VERSMISMATCH, LAST_ERROR }
| Return status. More...
typedef Gaudi::InterfaceId < IInterface, 0, 0 > | iid
| Interface ID.
typedef mpl::set1< iid > | ext_iids
| Extra interfaces.
Static Public Member Functions inherited from IInterface
static const InterfaceID & | interfaceID ()
| Return an instance of InterfaceID identifying the interface.

## Detailed Description

Abstract interface for a service or tool implementing a read access to files.

Author
  Marco Clemencic

Date
  2008-01-18

Definition at line 19 of file IFileAccess.h.

## Constructor & Destructor Documentation

IFileAccess::~IFileAccess | ( |  | ) |
| virtual

Definition at line 11 of file VirtualDestructors.cpp.

{}

## Member Function Documentation

IFileAccess::DeclareInterfaceID | ( | IFileAccess | ,
|  | 2 | ,
|  | 0 |
| ) |  |

InterfaceID.

virtual std::auto_ptr<std::istream> IFileAccess::open | ( | const std::string & | url | ) |
| pure virtual

Find the URL and returns an auto_ptr to an input stream interface of an object that can be used to read from the file the URL is pointing to.

Returns an empty pointer if the URL cannot be resolved.

Implemented in VFSSvc, and FileReadTool.

virtual const std::vector<std::string>& IFileAccess::protocols | ( |  | ) | const
| pure virtual

Protocols supported by the instance.

Implemented in VFSSvc, and FileReadTool.

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

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r0/GaudiKernel/GaudiKernel/IFileAccess.h
- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r0/GaudiKernel/src/Lib/VirtualDestructors.cpp