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SmartRefBase.cpp
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1 // $Header: /tmp/svngaudi/tmp.jEpFh25751/Gaudi/GaudiKernel/src/Lib/SmartRefBase.cpp,v 1.8 2005/05/10 12:24:16 hmd Exp $
2 // ====================================================================
3 // SmartRefBase.cpp
4 // --------------------------------------------------------------------
5 //
6 // Package : Root conversion example
7 //
8 // Author : Markus Frank
9 //
10 // ====================================================================
11 #define KERNEL_SMARTREFBASE_CPP 1
12 // $Header: /tmp/svngaudi/tmp.jEpFh25751/Gaudi/GaudiKernel/src/Lib/SmartRefBase.cpp,v 1.8 2005/05/10 12:24:16 hmd Exp $
13 
14 // Framework include files
15 #include "GaudiKernel/IDataProviderSvc.h"
16 #include "GaudiKernel/GaudiException.h"
17 #include "GaudiKernel/IRegistry.h"
18 #include "GaudiKernel/DataObject.h"
19 #include "GaudiKernel/LinkManager.h"
20 #include "GaudiKernel/StreamBuffer.h"
21 #include "GaudiKernel/SmartRefBase.h"
22 #include "GaudiKernel/ContainedObject.h"
23 #include "GaudiKernel/ObjectContainerBase.h"
24 
25 typedef ObjectContainerBase _Container;
26 
28 void SmartRefBase::set(DataObject* pObj, long hint_id, long link_id) {
29  m_data = pObj;
30  m_hintID = hint_id;
31  m_linkID = link_id;
32 }
33 
35 const ContainedObject* SmartRefBase::accessData(const ContainedObject*) const {
36  if ( m_hintID != StreamBuffer::INVALID && m_linkID != StreamBuffer::INVALID ) {
37  const _Container* cnt = dynamic_cast<const _Container*>(accessData(m_data));
38  if ( 0 != cnt ) {
39  return cnt->containedObject(m_linkID);
40  }
41  }
42  return 0;
43 }
44 
46 const DataObject* SmartRefBase::accessData(const DataObject*) const {
47  DataObject* target = 0;
48  DataObject* source =0;
49  if ( 0 == m_data && 0 != m_contd ) {
50  m_data = m_contd->parent();
51  }
52  source = const_cast<DataObject*>(m_data);
53  if ( m_hintID != StreamBuffer::INVALID && source != 0 ) {
54  LinkManager* mgr = source->linkMgr();
55  if ( 0 != mgr ) {
56  LinkManager::Link* link = mgr->link(m_hintID);
57  if ( 0 != link ) {
58  target = link->object();
59  if ( 0 == target ) {
60  IRegistry* reg = source->registry();
61  if ( 0 != reg ) {
62  IDataProviderSvc* datasvc = reg->dataSvc();
63  if ( 0 != datasvc ) {
64  if ( datasvc->retrieveObject(link->path(), target).isSuccess() ) {
65  link->setObject(target);
66  }
67  }
68  }
69  }
70  }
71  }
72  }
73  return target;
74 }
75 
76 // Extended equality check
77 bool SmartRefBase::isEqualEx(const DataObject* pObj, const SmartRefBase& c) const {
78  if ( c.m_hintID != StreamBuffer::INVALID && 0 != pObj ) {
79  DataObject* source = const_cast<DataObject*>(c.m_data);
80  if ( 0 != source ) {
81  LinkManager* mgr = source->linkMgr();
82  if ( 0 != mgr ) {
83  LinkManager::Link* link = mgr->link(c.m_hintID);
84  if ( 0 != link ) {
85  IRegistry* pReg = pObj->registry();
86  if ( pReg != 0 ) {
87  return link->path() == pReg->identifier();
88  }
89  }
90  }
91  }
92  }
93  return false;
94 }
95 
96 // Extended equality check
97 bool SmartRefBase::isEqualEx(const ContainedObject* pObj, const SmartRefBase& c) const {
98  if ( isEqualEx(pObj->parent(), c) ) {
99  return pObj->index() == c.m_linkID;
100  }
101  return false;
102 }
103 
104 const std::string &SmartRefBase::path () const {
105  static std::string s_empty_string = std::string();
106  DataObject *source = 0;
107  if ( 0 == m_data && 0 != m_contd ) {
108  m_data = m_contd->parent();
109  }
110  source = const_cast<DataObject*>(m_data);
111  if ( m_hintID != StreamBuffer::INVALID && source != 0 ) {
112  LinkManager* mgr = source->linkMgr();
113  if ( 0 != mgr ) {
114  LinkManager::Link* link = mgr->link(m_hintID);
115  if ( 0 != link )
116  return link->path();
117  }
118  }
119  return s_empty_string;
120 }