db/mork/src/orkinPortTableCursor.h

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  37
  38 #ifndef _ORKINPORTTABLECURSOR_
  39 #define _ORKINPORTTABLECURSOR_ 1
  40
  41 #ifndef _MDB_
  42 #include "mdb.h"
  43 #endif
  44
  45 #ifndef _MORK_
  46 #include "mork.h"
  47 #endif
  48
  49 #ifndef _MORKNODE_
  50 #include "morkNode.h"
  51 #endif
  52
  53 #ifndef _MORKHANDLE_
  54 #include "morkHandle.h"
  55 #endif
  56
  57 #ifndef _MORKPORTTABLECURSOR_
  58 #include "morkPortTableCursor.h"
  59 #endif
  60
  61 //3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
  62
  63 class morkPortTableCursor;
  64 #define morkMagic_kPortTableCursor 0x50744375 /* ascii 'PtCu' */
  65
  66 /*| orkinPortTableCursor: cursor class for iterating port tables
  67 **|
  68 **|| port: the cursor is associated with a specific port, which can be
  69 **| set to a different port (which resets the position to -1 so the
  70 **| next table acquired is the first in the port.
  71 **|
  72 |*/
  73 class orkinPortTableCursor :
  74   public morkHandle, public nsIMdbPortTableCursor { // nsIMdbCursor
  75
  76 // { ===== begin morkNode interface =====
  77 public: // morkNode virtual methods
  78   // virtual void CloseMorkNode(morkEnv* ev); // morkHandle is fine
  79   virtual ~orkinPortTableCursor(); // morkHandle destructor does everything
  80
  81 protected: // construction is protected (use the static Make() method)
  82   orkinPortTableCursor(morkEnv* ev, // note morkUsage is always morkUsage_kPool
  83     morkHandleFace* ioFace,    // must not be nil, cookie for this handle
  84     morkPortTableCursor* ioObject); // must not be nil, the object for this handle
  85
  86   // void CloseHandle(morkEnv* ev); // don't need to specialize closing
  87
  88 private: // copying is not allowed
  89   orkinPortTableCursor(const morkHandle& other);
  90   orkinPortTableCursor& operator=(const morkHandle& other);
  91
  92 // public: // dynamic type identification
  93   // mork_bool IsHandle() const //
  94   // { return IsNode() && mNode_Derived == morkDerived_kHandle; }
  95 // } ===== end morkNode methods =====
  96
  97 protected: // morkHandle memory management operators
  98   void* operator new(size_t inSize, morkPool& ioPool, morkZone& ioZone, morkEnv* ev) CPP_THROW_NEW
  99   { return ioPool.NewHandle(ev, inSize, &ioZone); }
 100
 101   void* operator new(size_t inSize, morkPool& ioPool, morkEnv* ev) CPP_THROW_NEW
 102   { return ioPool.NewHandle(ev, inSize, (morkZone*) 0); }
 103
 104   void* operator new(size_t inSize, morkHandleFace* ioFace) CPP_THROW_NEW
 105   { MORK_USED_1(inSize); return ioFace; }
 106
 107
 108 public: // construction:
 109
 110   static orkinPortTableCursor* MakePortTableCursor(morkEnv* ev,
 111     morkPortTableCursor* ioObject);
 112
 113 public: // utilities:
 114
 115   morkEnv* CanUsePortTableCursor(nsIMdbEnv* mev, mork_bool inMutable,
 116     mdb_err* outErr) const;
 117
 118 public: // type identification
 119   mork_bool IsOrkinPortTableCursor() const
 120   { return mHandle_Magic == morkMagic_kPortTableCursor; }
 121
 122   mork_bool IsOrkinPortTableCursorHandle() const
 123   { return this->IsHandle() && this->IsOrkinPortTableCursor(); }
 124
 125   NS_DECL_ISUPPORTS
 126 // { ===== begin nsIMdbObject methods =====
 127
 128   // { ----- begin attribute methods -----
 129   NS_IMETHOD IsFrozenMdbObject(nsIMdbEnv* ev, mdb_bool* outIsReadonly);
 130   // same as nsIMdbPort::GetIsPortReadonly() when this object is inside a port.
 131   // } ----- end attribute methods -----
 132
 133   // { ----- begin factory methods -----
 134   NS_IMETHOD GetMdbFactory(nsIMdbEnv* ev, nsIMdbFactory** acqFactory);
 135   // } ----- end factory methods -----
 136
 137   // { ----- begin ref counting for well-behaved cyclic graphs -----
 138   NS_IMETHOD GetWeakRefCount(nsIMdbEnv* ev, // weak refs
 139     mdb_count* outCount);
 140   NS_IMETHOD GetStrongRefCount(nsIMdbEnv* ev, // strong refs
 141     mdb_count* outCount);
 142
 143   NS_IMETHOD AddWeakRef(nsIMdbEnv* ev);
 144   NS_IMETHOD AddStrongRef(nsIMdbEnv* ev);
 145
 146   NS_IMETHOD CutWeakRef(nsIMdbEnv* ev);
 147   NS_IMETHOD CutStrongRef(nsIMdbEnv* ev);
 148
 149   NS_IMETHOD CloseMdbObject(nsIMdbEnv* ev); // called at strong refs zero
 150   NS_IMETHOD IsOpenMdbObject(nsIMdbEnv* ev, mdb_bool* outOpen);
 151   // } ----- end ref counting -----
 152
 153 // } ===== end nsIMdbObject methods =====
 154
 155 // { ===== begin nsIMdbCursor methods =====
 156
 157   // { ----- begin attribute methods -----
 158   NS_IMETHOD GetCount(nsIMdbEnv* ev, mdb_count* outCount); // readonly
 159   NS_IMETHOD GetSeed(nsIMdbEnv* ev, mdb_seed* outSeed);    // readonly
 160
 161   NS_IMETHOD SetPos(nsIMdbEnv* ev, mdb_pos inPos);   // mutable
 162   NS_IMETHOD GetPos(nsIMdbEnv* ev, mdb_pos* outPos);
 163
 164   NS_IMETHOD SetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool inFail);
 165   NS_IMETHOD GetDoFailOnSeedOutOfSync(nsIMdbEnv* ev, mdb_bool* outFail);
 166   // } ----- end attribute methods -----
 167
 168 // } ===== end nsIMdbCursor methods =====
 169
 170 // { ===== begin nsIMdbPortTableCursor methods =====
 171
 172   // { ----- begin attribute methods -----
 173   NS_IMETHOD SetPort(nsIMdbEnv* ev, nsIMdbPort* ioPort); // sets pos to -1
 174   NS_IMETHOD GetPort(nsIMdbEnv* ev, nsIMdbPort** acqPort);
 175
 176   NS_IMETHOD SetRowScope(nsIMdbEnv* ev, // sets pos to -1
 177     mdb_scope inRowScope);
 178   NS_IMETHOD GetRowScope(nsIMdbEnv* ev, mdb_scope* outRowScope);
 179   // setting row scope to zero iterates over all row scopes in port
 180
 181   NS_IMETHOD SetTableKind(nsIMdbEnv* ev, // sets pos to -1
 182     mdb_kind inTableKind);
 183   NS_IMETHOD GetTableKind(nsIMdbEnv* ev, mdb_kind* outTableKind);
 184   // setting table kind to zero iterates over all table kinds in row scope
 185   // } ----- end attribute methods -----
 186
 187   // { ----- begin table iteration methods -----
 188   NS_IMETHOD NextTable( // get table at next position in the db
 189     nsIMdbEnv* ev, // context
 190     nsIMdbTable** acqTable); // the next table in the iteration
 191   // } ----- end table iteration methods -----
 192
 193 // } ===== end nsIMdbPortTableCursor methods =====
 194 };
 195
 196 //3456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
 197
 198 #endif /* _ORKINPORTTABLECURSOR_ */