ACE/examples/APG/Containers/Hash_Map_Hash.cpp

   1 #include "ace/Hash_Map_Manager.h"
   2 #include "ace/Synch.h" // Needed for the lock
   3 #include "ace/Functor.h"
   4 #include "DataElement.h"
   5 #include "Hash_Map_Hash.h"
   6
   7 // Little helper class
   8 template<class EXT_ID, class INT_ID>
   9 class Hash_Map :
  10       public ACE_Hash_Map_Manager_Ex<EXT_ID, INT_ID,
  11       ACE_Hash<EXT_ID>, ACE_Equal_To<EXT_ID>, ACE_Null_Mutex>
  12 {};
  13
  14
  15 class Hash_Map_Example
  16 {
  17 public:
  18   ~Hash_Map_Example ()
  19   {
  20     map_.close ();
  21   }
  22
  23   // illustrate the hash map
  24   int run ();
  25
  26   // use the forward iterate
  27   void iterate_forward ();
  28
  29   // use the reverse iterator
  30   void iterate_reverse ();
  31
  32   // remove all the elements from the map
  33   void remove_all ();
  34
  35 private:
  36   Hash_Map<KeyType, DataElement> map_;
  37 };
  38
  39 int Hash_Map_Example::run ()
  40 {
  41   ACE_TRACE ("Hash_Map_Example::run");
  42
  43   for (int i = 0; i < 100; i++)
  44     {
  45       map_.bind (i, DataElement (i));
  46     }
  47
  48   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Map has\n")));
  49   for (int j = 0; j < 100; j++)
  50     {
  51       DataElement d;
  52       map_.find (j, d);
  53       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), d.getData ()));
  54     }
  55   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  56
  57   // Use the forward iterator.
  58   this->iterate_forward ();
  59
  60   // Use the reverse iterator.
  61   this->iterate_reverse ();
  62
  63   // Remove all the elements from the map.
  64   this->remove_all ();
  65
  66   // Iterate through the map again.
  67   this->iterate_forward ();
  68
  69   return 0;
  70 }
  71
  72 void Hash_Map_Example::iterate_forward ()
  73 {
  74   ACE_TRACE ("Hash_Map_Example::iterate_forward");
  75
  76   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Forward Iteration\n")));
  77   for (Hash_Map<KeyType, DataElement>::iterator iter = map_.begin ();
  78        iter != map_.end (); iter++)
  79     {
  80       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), (*iter).int_id_.getData ()));
  81     }
  82   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  83 }
  84
  85 void Hash_Map_Example::iterate_reverse ()
  86 {
  87   ACE_TRACE ("Hash_Map_Example::iterate_reverse");
  88
  89   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Reverse Iteration\n")));
  90   for (Hash_Map<KeyType, DataElement>::reverse_iterator iter = map_.rbegin ();
  91        iter != map_.rend (); iter++)
  92     {
  93       ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), (*iter).int_id_.getData ()));
  94     }
  95   ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
  96 }
  97
  98 void Hash_Map_Example::remove_all ()
  99 {
 100   ACE_TRACE ("Hash_Map_Example::remove_all");
 101   map_.unbind_all ();
 102 }
 103
 104 int ACE_TMAIN (int, ACE_TCHAR *[])
 105 {
 106   Hash_Map_Example me;
 107   return me.run ();
 108 }
 109