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SmartRefBase.cpp
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1 // ====================================================================
2 // SmartRefBase.cpp
3 // --------------------------------------------------------------------
4 //
5 // Package : Root conversion example
6 //
7 // Author : Markus Frank
8 //
9 // ====================================================================
10 #define KERNEL_SMARTREFBASE_CPP 1
11
12 // Framework include files
13 #include "GaudiKernel/IDataProviderSvc.h"
14 #include "GaudiKernel/GaudiException.h"
15 #include "GaudiKernel/IRegistry.h"
16 #include "GaudiKernel/DataObject.h"
17 #include "GaudiKernel/LinkManager.h"
18 #include "GaudiKernel/StreamBuffer.h"
19 #include "GaudiKernel/SmartRefBase.h"
20 #include "GaudiKernel/ContainedObject.h"
21 #include "GaudiKernel/ObjectContainerBase.h"
22
23 typedef ObjectContainerBase _Container;
24
26 void SmartRefBase::set(DataObject* pObj, long hint_id, long link_id) {
27 m_data = pObj;
28 m_hintID = hint_id;
29 m_linkID = link_id;
30 }
31
33 const ContainedObject* SmartRefBase::accessData(const ContainedObject*) const {
34 if ( m_hintID != StreamBuffer::INVALID && m_linkID != StreamBuffer::INVALID ) {
35 const _Container* cnt = dynamic_cast<const _Container*>(accessData(m_data));
36 if ( cnt ) return cnt->containedObject(m_linkID);
37 }
38 return nullptr;
39 }
40
42 const DataObject* SmartRefBase::accessData(const DataObject*) const {
43 DataObject* target = nullptr;
44 DataObject* source =nullptr;
45 if ( !m_data && m_contd ) m_data = m_contd->parent();
46 source = const_cast<DataObject*>(m_data);
47 if ( m_hintID != StreamBuffer::INVALID && source ) {
48 LinkManager* mgr = source->linkMgr();
49 if ( mgr ) {
50 LinkManager::Link* link = mgr->link(m_hintID);
51 if ( link ) {
52 target = link->object();
53 if ( !target ) {
54 IRegistry* reg = source->registry();
55 if ( reg ) {
56 IDataProviderSvc* datasvc = reg->dataSvc();
57 if ( datasvc && datasvc->retrieveObject(link->path(), target).isSuccess() ) {
58 link->setObject(target);
59 }
60 }
61 }
62 }
63 }
64 }
65 return target;
66 }
67
68 // Extended equality check
69 bool SmartRefBase::isEqualEx(const DataObject* pObj, const SmartRefBase& c) const {
70 if ( c.m_hintID != StreamBuffer::INVALID && pObj ) {
71 DataObject* source = const_cast<DataObject*>(c.m_data);
72 if ( source ) {
73 LinkManager* mgr = source->linkMgr();
74 if ( mgr ) {
75 LinkManager::Link* link = mgr->link(c.m_hintID);
76 if ( link ) {
77 IRegistry* pReg = pObj->registry();
78 return pReg && link->path() == pReg->identifier();
79 }
80 }
81 }
82 }
83 return false;
84 }
85
86 // Extended equality check
87 bool SmartRefBase::isEqualEx(const ContainedObject* pObj, const SmartRefBase& c) const {
88 return isEqualEx(pObj->parent(), c) && pObj->index() == c.m_linkID;
89 }
90
91 const std::string &SmartRefBase::path () const {
92 static std::string s_empty_string{};
93 DataObject *source = nullptr;
94 if ( !m_data && m_contd ) m_data = m_contd->parent();
95 source = const_cast<DataObject*>(m_data);
96 if ( m_hintID != StreamBuffer::INVALID && source ) {
97 LinkManager* mgr = source->linkMgr();
98 if ( mgr ) {
99 LinkManager::Link* link = mgr->link(m_hintID);
100 if ( link )
101 return link->path();
102 }
103 }
104 return s_empty_string;
105 }
LinkManager::Link::path
const std::string & path() const
Access to path of object.
Definition: LinkManager.h:69
gaudirun.c
c
Definition: gaudirun.py:391
SmartRefBase::isEqualEx
bool isEqualEx(const DataObject *pObj, const SmartRefBase &c) const
Extended equality check.
Definition: SmartRefBase.cpp:69
LinkManager.h
SmartRefBase::accessData
const ContainedObject * accessData(const ContainedObject *typ) const
Load on demand of ContainedObject like references.
Definition: SmartRefBase.cpp:33
SmartRefBase::m_data
const DataObject * m_data
Object data: Pointer to the identifiable object the link originates.
Definition: SmartRefBase.h:54
_Container
ObjectContainerBase _Container
Definition: SmartRefBase.cpp:23
SmartRefBase::m_hintID
long m_hintID
Object data: ID of the link hint to the identifiable object.
Definition: SmartRefBase.h:50
ContainedObject::index
virtual long index() const
Distance in the parent container.
Definition: ContainedObject.h:54
ObjectContainerBase.h
SmartRefBase
User example objects: SmartRefBase.
Definition: SmartRefBase.h:47
SmartRefBase.h
IDataProviderSvc
Data provider interface definition.
Definition: IDataProviderSvc.h:45
ContainedObject::parent
const ObjectContainerBase * parent() const
Access to parent object.
Definition: ContainedObject.h:49
DataObject::registry
IRegistry * registry() const
Get pointer to Registry.
Definition: DataObject.h:74
StreamBuffer.h
DataObject::linkMgr
LinkManager * linkMgr() const
Retrieve Link manager.
Definition: DataObject.h:78
std::string
STL class.
ObjectContainerBase::containedObject
virtual ContainedObject * containedObject(long dist) const =0
Pointer to an object of a given distance.
SmartRefBase::m_contd
const ContainedObject * m_contd
Object data: Pointer to the Contained object (if applicable)
Definition: SmartRefBase.h:56
IDataProviderSvc.h
LinkManager::Link::setObject
void setObject(const DataObject *pObject)
Update object pointer.
Definition: LinkManager.h:58
SmartRefBase::path
const std::string & path() const
Shortcut to access the path to the linked object.
Definition: SmartRefBase.cpp:91
IRegistry::identifier
virtual const id_type & identifier() const =0
Full identifier (or key)
GaudiException.h
LinkManager::link
Link * link(long id)
Retrieve symbolic link identified by ID.
Definition: LinkManager.cpp:33
IRegistry::dataSvc
virtual IDataProviderSvc * dataSvc() const =0
Retrieve pointer to Transient Store.
IRegistry.h
IRegistry
The IRegistry represents the entry door to the environment any data object residing in a transient da...
Definition: IRegistry.h:22
SmartRefBase::m_linkID
long m_linkID
Object data: ID of the object within the identifiable container (if any)
Definition: SmartRefBase.h:52
ContainedObject
All classes that their objects may be contained in an LHCb ObjectContainer (e.g.
Definition: ContainedObject.h:29
ContainedObject.h
ObjectContainerBase
ObjectContainerBase is the base class for Gaudi container classes.
Definition: ObjectContainerBase.h:19
StreamBuffer::INVALID
Definition: StreamBuffer.h:117
SmartRefBase::set
void set(DataObject *pObj, long hint_id, long link_id)
Setup smart reference when reading. Must be allowed from external sources.
Definition: SmartRefBase.cpp:26
LinkManager::Link::object
const DataObject * object() const
Const access to data object.
Definition: LinkManager.h:62
LinkManager::Link
Embedded class defining a symbolic link Note: No copy constructor; bitwise copy (done by the compiler...
Definition: LinkManager.h:31
DataObject
A DataObject is the base class of any identifiable object on any data store.
Definition: DataObject.h:30
LinkManager
A LinkManager is the object aggregated into a DataObject, which is responsible for the handling of no...
Definition: LinkManager.h:21
DataObject.h
IDataProviderSvc::retrieveObject
virtual StatusCode retrieveObject(IRegistry *pDirectory, const std::string &path, DataObject *&pObject)=0
Retrieve object identified by its directory entry.