43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
/*=============================================================================
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# Filename: ResultFilter.h
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# Author: Jiaqi, Chen
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# Mail: chenjiaqi93@163.com
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# Last Modified: 2016-05-03 15:36
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# Description:
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=============================================================================*/
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#ifndef _QUERY_RESULTFILTER_H
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#define _QUERY_RESULTFILTER_H
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#include "BasicQuery.h"
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#include "SPARQLquery.h"
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#include "../Util/Util.h"
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class ResultFilter
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{
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private:
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static const int MAX_SIZE = 1048576;
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inline int hash(unsigned int x)
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{
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x = (x + 0x7ed55d16) + (x << 12);
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x = (x ^ 0xc761c23c) ^ (x >> 19);
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x = (x + 0x165667b1) + (x << 5);
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x = (x + 0xd3a2646c) ^ (x << 9);
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x = (x + 0xfd7046c5) + (x << 3);
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x = (x ^ 0xb55a4f09) ^ (x >> 16);
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return x & (MAX_SIZE - 1);
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}
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//var valid hash_table
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std::map<std::string, pair<int, std::vector<int> > > result_filter;
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public:
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void addVar(std::string var);
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void changeResultHashTable(SPARQLquery &query, int value);
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void candFilterWithResultHashTable(BasicQuery &basicquery);
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};
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#endif // _QUERY_RESULTFILTER_H
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