The Gaudi Framework  v29r0 (ff2e7097)
Public Types | Public Member Functions | Protected Attributes | List of all members
Gaudi::IDataConnection Class Referenceabstract

ABC describing basic data connection. More...

#include <GaudiUtils/IIODataManager.h>

Inheritance diagram for Gaudi::IDataConnection:
Inheritance graph
[legend]
Collaboration diagram for Gaudi::IDataConnection:
Collaboration graph
[legend]

Public Types

enum  IoType { READ = 1 << 1, UPDATE = 1 << 2, CREATE = 1 << 3, RECREATE = ( 1 << 4 ) + ( 1 << 3 ) }
 I/O Connection types. More...
 
enum  IoStatus { BAD_DATA_CONNECTION = 4 }
 Status Code on bad file connection. More...
 

Public Member Functions

 IDataConnection (const IInterface *own, std::string nam)
 Standard constructor. More...
 
virtual ~IDataConnection ()=default
 Standard destructor. More...
 
const std::string & name () const
 Connection name. More...
 
void setFID (std::string fid)
 Set file ID. More...
 
const std::string & fid () const
 Access file id. More...
 
const std::string & pfn () const
 Access physical file name. More...
 
void setPFN (std::string fn)
 Set physical file name. More...
 
int ageFile ()
 Increase age of I/O source. More...
 
void resetAge ()
 Reset age. More...
 
int age () const
 Access age counter. More...
 
const IInterface * owner () const
 Owner instance. More...
 
virtual StatusCode connectRead ()=0
 Open data stream in read mode. More...
 
virtual StatusCode connectWrite (IoType type)=0
 Open data stream in write mode. More...
 
virtual StatusCode disconnect ()=0
 Release data stream. More...
 
virtual bool isConnected () const =0
 Check if connected to data source. More...
 
virtual StatusCode read (void *const data, size_t len)=0
 Read raw byte buffer from input stream. More...
 
virtual StatusCode write (const void *data, int len)=0
 Write raw byte buffer to output stream. More...
 
virtual long long int seek (long long int where, int origin)=0
 Seek on the file described by ioDesc. Arguments as in ::seek() More...
 

Protected Attributes

std::string m_name
 Connection name/identifier. More...
 
std::string m_fid
 File ID of the connection. More...
 
std::string m_pfn
 Physical file name of the connection. More...
 
int m_age = 0
 Age counter. More...
 
const IInterface * m_owner = nullptr
 Owner pointer. More...
 

Detailed Description

ABC describing basic data connection.

Author
M.Frank
Version
1.0
Date
20/10/2007

Definition at line 25 of file IIODataManager.h.

Member Enumeration Documentation

enum Gaudi::IDataConnection::IoStatus

Status Code on bad file connection.

Enumerator
BAD_DATA_CONNECTION 

Definition at line 43 of file IIODataManager.h.

43 { BAD_DATA_CONNECTION = 4 };
enum Gaudi::IDataConnection::IoType

I/O Connection types.

Enumerator
READ 
UPDATE 
CREATE 
RECREATE 

Definition at line 41 of file IIODataManager.h.

41 { READ = 1 << 1, UPDATE = 1 << 2, CREATE = 1 << 3, RECREATE = ( 1 << 4 ) + ( 1 << 3 ) };

Constructor & Destructor Documentation

Gaudi::IDataConnection::IDataConnection ( const IInterface *  own,
std::string  nam 
)
inline

Standard constructor.

Definition at line 47 of file IIODataManager.h.

47 : m_name( std::move( nam ) ), m_owner( own ) {}
Gaudi::IDataConnection::m_owner
const IInterface * m_owner
Owner pointer.
Definition: IIODataManager.h:37
Gaudi::IDataConnection::m_name
std::string m_name
Connection name/identifier.
Definition: IIODataManager.h:29
std::move
T move(T...args)
virtual Gaudi::IDataConnection::~IDataConnection ( )
virtualdefault

Standard destructor.

Member Function Documentation

int Gaudi::IDataConnection::age ( ) const
inline

Access age counter.

Definition at line 65 of file IIODataManager.h.

65 { return m_age; }
Gaudi::IDataConnection::m_age
int m_age
Age counter.
Definition: IIODataManager.h:35
int Gaudi::IDataConnection::ageFile ( )
inline

Increase age of I/O source.

Definition at line 61 of file IIODataManager.h.

61 { return ++m_age; }
Gaudi::IDataConnection::m_age
int m_age
Age counter.
Definition: IIODataManager.h:35
virtual StatusCode Gaudi::IDataConnection::connectRead ( )
pure virtual

Open data stream in read mode.

Implemented in Gaudi::RootDataConnection.

virtual StatusCode Gaudi::IDataConnection::connectWrite ( IoType  type)
pure virtual

Open data stream in write mode.

Implemented in Gaudi::RootDataConnection.

virtual StatusCode Gaudi::IDataConnection::disconnect ( )
pure virtual

Release data stream.

Implemented in Gaudi::RootDataConnection.

const std::string& Gaudi::IDataConnection::fid ( ) const
inline

Access file id.

Definition at line 55 of file IIODataManager.h.

55 { return m_fid; }
Gaudi::IDataConnection::m_fid
std::string m_fid
File ID of the connection.
Definition: IIODataManager.h:31
virtual bool Gaudi::IDataConnection::isConnected ( ) const
pure virtual

Check if connected to data source.

Implemented in Gaudi::RootDataConnection.

const std::string& Gaudi::IDataConnection::name ( ) const
inline

Connection name.

Definition at line 51 of file IIODataManager.h.

51 { return m_name; }
Gaudi::IDataConnection::m_name
std::string m_name
Connection name/identifier.
Definition: IIODataManager.h:29
const IInterface* Gaudi::IDataConnection::owner ( ) const
inline

Owner instance.

Definition at line 67 of file IIODataManager.h.

67 { return m_owner; }
Gaudi::IDataConnection::m_owner
const IInterface * m_owner
Owner pointer.
Definition: IIODataManager.h:37
const std::string& Gaudi::IDataConnection::pfn ( ) const
inline

Access physical file name.

Definition at line 57 of file IIODataManager.h.

57 { return m_pfn; }
Gaudi::IDataConnection::m_pfn
std::string m_pfn
Physical file name of the connection.
Definition: IIODataManager.h:33
virtual StatusCode Gaudi::IDataConnection::read ( void *const  data,
size_t  len 
)
pure virtual

Read raw byte buffer from input stream.

Implemented in Gaudi::RootDataConnection.

void Gaudi::IDataConnection::resetAge ( )
inline

Reset age.

Definition at line 63 of file IIODataManager.h.

63 { m_age = 0; }
Gaudi::IDataConnection::m_age
int m_age
Age counter.
Definition: IIODataManager.h:35
virtual long long int Gaudi::IDataConnection::seek ( long long int  where,
int  origin 
)
pure virtual

Seek on the file described by ioDesc. Arguments as in ::seek()

Implemented in Gaudi::RootDataConnection.

void Gaudi::IDataConnection::setFID ( std::string  fid)
inline

Set file ID.

Definition at line 53 of file IIODataManager.h.

53 { m_fid = std::move( fid ); }
Gaudi::IDataConnection::m_fid
std::string m_fid
File ID of the connection.
Definition: IIODataManager.h:31
std::move
T move(T...args)
void Gaudi::IDataConnection::setPFN ( std::string  fn)
inline

Set physical file name.

Definition at line 59 of file IIODataManager.h.

59 { m_pfn = std::move( fn ); }
Gaudi::IDataConnection::m_pfn
std::string m_pfn
Physical file name of the connection.
Definition: IIODataManager.h:33
std::move
T move(T...args)
virtual StatusCode Gaudi::IDataConnection::write ( const void *  data,
int  len 
)
pure virtual

Write raw byte buffer to output stream.

Implemented in Gaudi::RootDataConnection.

Member Data Documentation

int Gaudi::IDataConnection::m_age = 0
protected

Age counter.

Definition at line 35 of file IIODataManager.h.

std::string Gaudi::IDataConnection::m_fid
protected

File ID of the connection.

Definition at line 31 of file IIODataManager.h.

std::string Gaudi::IDataConnection::m_name
protected

Connection name/identifier.

Definition at line 29 of file IIODataManager.h.

const IInterface* Gaudi::IDataConnection::m_owner = nullptr
protected

Owner pointer.

Definition at line 37 of file IIODataManager.h.

std::string Gaudi::IDataConnection::m_pfn
protected

Physical file name of the connection.

Definition at line 33 of file IIODataManager.h.

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