diff options
Diffstat (limited to 'src/ordhash.h')
| -rw-r--r-- | src/ordhash.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/ordhash.h b/src/ordhash.h new file mode 100644 index 0000000..e946f95 --- /dev/null +++ b/src/ordhash.h | |||
| @@ -0,0 +1,104 @@ | |||
| 1 | #ifndef ORD_HASH_H | ||
| 2 | #define ORD_HASH_H | ||
| 3 | |||
| 4 | #include "hash.h" | ||
| 5 | #include "tqsort.h" | ||
| 6 | |||
| 7 | template<typename key, typename value, typename cmpfnc, typename sizecalc = __calcNextTSize_fast, typename keyalloc = std::allocator<key>, typename valuealloc = std::allocator<value>, typename challoc = std::allocator<uint32_t> > | ||
| 8 | class OrdHash : public Hash<key, value, sizecalc, keyalloc, valuealloc, challoc> | ||
| 9 | { | ||
| 10 | public: | ||
| 11 | OrdHash() : | ||
| 12 | bSorted( false ), | ||
| 13 | aData( NULL ) | ||
| 14 | { | ||
| 15 | } | ||
| 16 | |||
| 17 | virtual ~OrdHash() | ||
| 18 | { | ||
| 19 | } | ||
| 20 | |||
| 21 | protected: | ||
| 22 | virtual void invalidate() | ||
| 23 | { | ||
| 24 | bSorted = false; | ||
| 25 | delete[] aData; | ||
| 26 | aData = NULL; | ||
| 27 | } | ||
| 28 | |||
| 29 | virtual void onInsert() | ||
| 30 | { | ||
| 31 | invalidate(); | ||
| 32 | } | ||
| 33 | |||
| 34 | virtual void onUpdate() | ||
| 35 | { | ||
| 36 | invalidate(); | ||
| 37 | } | ||
| 38 | |||
| 39 | virtual void onDelete() | ||
| 40 | { | ||
| 41 | invalidate(); | ||
| 42 | } | ||
| 43 | |||
| 44 | virtual void onReHash() | ||
| 45 | { | ||
| 46 | invalidate(); | ||
| 47 | } | ||
| 48 | |||
| 49 | virtual std::pair<key,value> getAtPos( uint32_t nPos ) | ||
| 50 | { | ||
| 51 | return Hash<key, value, sizecalc, keyalloc, valuealloc, challoc>::getAtPos( aData[nPos].nIndex ); | ||
| 52 | } | ||
| 53 | |||
| 54 | virtual void buildIndex() | ||
| 55 | { | ||
| 56 | aData = new struct ind[this->nFilled]; | ||
| 57 | uint32_t k = 0; | ||
| 58 | for( uint32_t j = 0; j < this->nCapacity; j++ ) | ||
| 59 | { | ||
| 60 | if( this->isFilled( j ) ) | ||
| 61 | { | ||
| 62 | if( !this->isDeleted( j ) ) | ||
| 63 | { | ||
| 64 | aData[k].pVal = &(this->aValues[j]); | ||
| 65 | aData[k].nIndex = j; | ||
| 66 | k++; | ||
| 67 | } | ||
| 68 | } | ||
| 69 | } | ||
| 70 | |||
| 71 | tqsort<typename OrdHash<key, value, cmpfnc, sizecalc, keyalloc, valuealloc, challoc>::ind, cmpfnc, value **>( aData, this->nFilled ); | ||
| 72 | |||
| 73 | bSorted = true; | ||
| 74 | } | ||
| 75 | |||
| 76 | virtual uint32_t getFirstPos( bool &bFinished ) | ||
| 77 | { | ||
| 78 | if( bSorted == false ) | ||
| 79 | buildIndex(); | ||
| 80 | |||
| 81 | return 0; | ||
| 82 | } | ||
| 83 | |||
| 84 | virtual uint32_t getNextPos( uint32_t nPos, bool &bFinished ) | ||
| 85 | { | ||
| 86 | if( nPos+1 >= this->nFilled ) | ||
| 87 | { | ||
| 88 | bFinished = true; | ||
| 89 | return 0; | ||
| 90 | } | ||
| 91 | return ++nPos; | ||
| 92 | } | ||
| 93 | public: | ||
| 94 | typedef struct ind | ||
| 95 | { | ||
| 96 | value *pVal; | ||
| 97 | uint32_t nIndex; | ||
| 98 | } ind; | ||
| 99 | private: | ||
| 100 | bool bSorted; | ||
| 101 | ind *aData; | ||
| 102 | }; | ||
| 103 | |||
| 104 | #endif | ||
