ATLAS Offline Software
Database
APR
PersistencySvc
src
TokenIterator.h
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/*
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Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
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*/
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#ifndef PERSISTENCYSVC_TOKENITERATOR_H
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#define PERSISTENCYSVC_TOKENITERATOR_H
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#include "
PersistencySvc/ITokenIterator.h
"
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#include "
PersistencySvc/IPositionSeek.h
"
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#include "
AthenaKernel/ICollectionSize.h
"
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#include <string>
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namespace
pool
{
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// forward declarations
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class
FileDescriptor;
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class
IStorageExplorer;
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class
DbSelect;
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namespace
PersistencySvc {
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class
TokenIterator
:
virtual
public
ITokenIterator
,
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virtual
public
IPositionSeek
,
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virtual
public
ICollectionSize
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{
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public
:
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TokenIterator
(
FileDescriptor
& fileDescriptor,
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const
std::string& containerName,
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IStorageExplorer
& storageExplorer,
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const
std::string&
selection
);
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~TokenIterator
();
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TokenIterator
(
const
TokenIterator
& ) =
delete
;
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TokenIterator
&
operator=
(
const
TokenIterator
& ) =
delete
;
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Token
*
next
();
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virtual
bool
seek
(
long
long
int
position);
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virtual
int
size
();
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private
:
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IStorageExplorer
&
m_storageExplorer
;
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DbSelect
*
m_selection
;
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};
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}
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}
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#endif
pool
pool namespace
Definition:
libname.h:15
ICollectionSize.h
Abstract interface for finding the size of an event collection.
pool::FileDescriptor
Definition:
FileDescriptor.h:41
pool::IStorageExplorer
Definition:
IStorageExplorer.h:53
pool::PersistencySvc::TokenIterator::operator=
TokenIterator & operator=(const TokenIterator &)=delete
Token
This class provides a token that identifies in a unique way objects on the persistent storage.
Definition:
Token.h:21
pool::PersistencySvc::TokenIterator::m_storageExplorer
IStorageExplorer & m_storageExplorer
Reference to the storage explorer.
Definition:
TokenIterator.h:67
pool::PersistencySvc::TokenIterator::~TokenIterator
~TokenIterator()
Destructor.
pool::DbSelect
Definition:
DbSelect.h:44
IPositionSeek.h
Abstract interface for seeking within an event stream.
ICollectionSize
Abstract interface for finding the size of an event collection.
Definition:
ICollectionSize.h:31
selection
std::string selection
Definition:
fbtTestBasics.cxx:73
pool::PersistencySvc::TokenIterator::next
Token * next()
Returns the pointer to next token.
pool::PersistencySvc::TokenIterator::TokenIterator
TokenIterator(FileDescriptor &fileDescriptor, const std::string &containerName, IStorageExplorer &storageExplorer, const std::string &selection)
Constructor taking as argument a DbSelection object, the file descriptor, the container name and the ...
pool::ITokenIterator
Definition:
ITokenIterator.h:20
pool::PersistencySvc::TokenIterator::m_selection
DbSelect * m_selection
Selection object.
Definition:
TokenIterator.h:69
pool::PersistencySvc::TokenIterator::TokenIterator
TokenIterator(const TokenIterator &)=delete
pool::PersistencySvc::TokenIterator::size
virtual int size()
Return the size of the collection.
pool::PersistencySvc::TokenIterator
Definition:
TokenIterator.h:31
ITokenIterator.h
pool::IPositionSeek
Abstract interface for seeking inside a collection.
Definition:
IPositionSeek.h:26
pool::PersistencySvc::TokenIterator::seek
virtual bool seek(long long int position)
Seek to a given position in the collection.
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