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Text File  |  1995-09-07  |  3.4 KB  |  177 lines  |  [TEXT/CWIE]
  1. // COPYRIGHT 1994 A.D. Software, All rights reserved
  2.  
  3. // public layer of OOFILE database
  4. // implementing relations
  5.  
  6. // inline definitions
  7.  
  8.  
  9.  
  10. // -------------------------------------------------------
  11. //                   d b R e l a t i o n
  12. // -------------------------------------------------------
  13. inline dbRelationship& dbRelationship::tables(dbTable& lhs, dbTable& rhs)
  14. {
  15.     return tables(&lhs, &rhs);
  16. }
  17.  
  18.  
  19. inline dbRelationship& dbRelationship::joinFields(dbField& lhs, dbField& rhs)
  20. {
  21.     return joinFields(&lhs, &rhs);
  22. } 
  23.  
  24.  
  25. inline void dbRelationship::lhs(dbTable& tbl, dbRelRefBase& linkFld, const char* str)
  26. {
  27.     lhs(&tbl, linkFld, str);
  28. }
  29.  
  30.  
  31. inline void dbRelationship::rhs(dbTable& tbl, dbRelRefBase& linkFld, const char* str)
  32. {
  33.     rhs(&tbl, linkFld, str);
  34. }
  35.  
  36.  
  37. inline void dbRelationship::lhs(dbField& joinField, dbRelRefBase& linkFld, const char* str)
  38. {
  39.     lhs(&joinField, linkFld, str);
  40. }
  41.  
  42.  
  43. inline void dbRelationship::rhs(dbField& joinField, dbRelRefBase& linkFld, const char* str)
  44. {
  45.     rhs(&joinField, linkFld, str);
  46. }
  47.  
  48.  
  49. // -------------------------------------------------------
  50. //            d b R e l H a l f
  51. // -------------------------------------------------------
  52. inline dbTable* dbRelHalf::relatesToTable() const
  53. {
  54.     return mInverseTable;
  55. }
  56.  
  57.  
  58. inline bool dbRelHalf::rhsbackendIsThisTable(const OOF_tableBackend* targetBack) const
  59. {
  60.     return mTable->pointsToBackend(targetBack);
  61. } 
  62.  
  63.  
  64. inline void dbRelHalf::refreshContext(dbTable* clonedTargetTable)
  65. {
  66.     if (mJoinField) 
  67.         clonedTargetTable->loadRelatedContextJoiningFromTo(mJoinField, mJoinToField);
  68.     else
  69.         ;  // NOT YET IMPLEMENTED - OID join
  70. }
  71.  
  72.  
  73. inline dbRelChain* dbRelHalf::askTableToBuildValidChain(dbRelChain* candidateChain)
  74. {
  75.     return mTable->buildRelChain(candidateChain);
  76. }
  77.  
  78.  
  79.  
  80.  
  81. // -------------------------------------------------------
  82. //           d b R e l R e f B a s e 
  83. // -------------------------------------------------------
  84. inline void dbRelRefBase::LogTransition() 
  85. {
  86.     appendRelationLink(mThisLinkRelHalf);
  87. }
  88.  
  89.  
  90. inline dbTable* dbRelRefBase::RefersToTable()
  91. {
  92.     return mThisLinkRelHalf->relatesToTable();
  93. }
  94.  
  95.  
  96. inline void dbRelRefBase::SetRelHalfByWhichWeNavigate(dbRelHalf* ref )
  97. {
  98.     assert(mThisLinkRelHalf==0);
  99.     mThisLinkRelHalf = ref;
  100. }
  101.  
  102.  
  103. inline void dbRelRefBase::newRecord() 
  104. {
  105.     if (!mRelationChain)
  106.         BuildRelChainToTable();
  107.     mRelationChain->newRecord();
  108. }
  109.  
  110.  
  111. inline void dbRelRefBase::start()
  112. {
  113.     if (!mRelationChain)
  114.         BuildRelChainToTable();
  115.     mRelationChain->startRelated();
  116. }
  117.  
  118.  
  119. inline bool dbRelRefBase::more()
  120. {
  121.     if (!mRelationChain)
  122.         BuildRelChainToTable();
  123.     return mRelationChain->moreRelated();
  124. }
  125.  
  126.  
  127. inline void dbRelRefBase::next()
  128. {
  129.     if (!mRelationChain)
  130.         BuildRelChainToTable();
  131.     mRelationChain->nextRelated();
  132. }
  133.  
  134.  
  135. inline unsigned long dbRelRefBase::count()
  136. {
  137.     if (!mRelationChain)
  138.         BuildRelChainToTable();
  139.     return mRelationChain->countRelated();
  140. }
  141.  
  142.  
  143.  
  144.  
  145. // -------------------------------------------------------
  146. //               d b R e l C h a i n
  147. // -------------------------------------------------------
  148. inline bool dbRelChain::isStillJustACandidate()
  149. {
  150.     return (mTablesList==0);
  151. }
  152.  
  153.  
  154. inline void dbRelChain::baseContextHasChanged()
  155. {
  156.     mContextValid = false;
  157. }
  158.  
  159.  
  160. inline dbTable* dbRelChain::getFinalTable()
  161. {
  162.     return mFinalTable;
  163. }
  164.  
  165.  
  166.  
  167. // -------------------------------------------------------
  168. //             O O F _ r e l C h a i n L i s t
  169. // -------------------------------------------------------
  170. inline void OOF_relChainList::append(const dbRelChain* chainPtr)
  171. {
  172.     OOF_ExpandableLongArray::append((unsigned long) chainPtr);
  173. }
  174.  
  175.  
  176.  
  177.