181 lines
4.7 KiB
C++
181 lines
4.7 KiB
C++
/*
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* basicQuery.h
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*
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* Created on: 2014-6-20
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* Author: liyouhuan
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*/
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#ifndef BASICQUERY_H_
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#define BASICQUERY_H_
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#include<iostream>
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#include<string.h>
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#include<stdio.h>
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#include<stdlib.h>
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#include<map>
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#include<set>
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#include<vector>
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#include "../Triple/Triple.h"
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#include "../Signature/Signature.h"
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#include "../KVstore/KVstore.h"
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#include "IDList.h"
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#include<sstream>
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using namespace std;
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class BasicQuery{
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private:
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vector<string> option_vs;
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vector<Triple> triple_vt;
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/* mapping from variables' name to their assigned id. */
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map<std::string, int> var_str2id;
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/* record each tuple's(subject, predicate, object) number of occurrences in this BasicQuery. */
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map<std::string, int> tuple2freq;
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map<std::string, int> var_not_in_select;
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int select_var_num;
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/* var_num is different from that in SPARQLquery
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* because there are some variable not in select */
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int graph_var_num;
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string* var_name;
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IDList* candidate_list;
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vector<int*> result_list;
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int* var_degree;
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/* whether has added the variable's literal candidate */
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bool* is_literal_candidate_added;
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char encode_method;
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/* edge_id[var_id][i] : the line id of the i-th edge of the var */
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int** edge_id;
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/* edge_id[var_id][i] : the neighbor id of the i-th edge of the var */
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int** edge_nei_id;
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/* edge_pre_id[var_id][i] : the preID of the i-th edge of the var */
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int** edge_pre_id;
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/* denote the type of edge, assigned with
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* BasicQuery::IN or BasicQuery::OUT
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* edge_type[var_id][i] */
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char** edge_type;
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EntityBitSet* var_sig;
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/* edge_sig[sub_id][obj_id] */
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EdgeBitSet** edge_sig;
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void addInVarNotInSelect();
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void findVarNotInSelect();
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void buildTuple2Freq();
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void initial();
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public:
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static const char EDGE_IN = 'i';
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static const char EDGE_OUT= 'o';
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static const int MAX_VAR_NUM = 10;
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static const char NOT_JUST_SELECT = 'a';
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static const char SELECT_VAR = 's';
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/* _query is a SPARQL query string */
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BasicQuery(const string _query="");
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~BasicQuery();
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void clear();
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/* get the number of variables */
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int getVarNum();
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/* get the name of _var in the query graph */
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std::string getVarName(int _var);
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/* get triples number, also sentences number */
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int getTripleNum();
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std::string to_str();
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/* get the ID of the i-th triple */
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const Triple& getTriple(int _i_th_triple);
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/* get the ID of the i-th edge of _var */
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int getEdgeID(int _var, int _i_th_edge);
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/* get the ID of the i-th edge of _var */
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int getEdgeNeighborID(int _var, int _i_th_edge);
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/* get the preID of the i-th edge of _var */
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int getEdgePreID(int _var, int _i_th_edge);
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/* get the type of the i-th edge of _var */
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char getEdgeType(int _var, int _i_th_edge);
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/* get the degree of _var in the query graph */
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int getVarDegree(int _var);
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/* */
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const EntityBitSet& getVarBitSet(int _i)const;
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/* get the candidate list of _var in the query graph */
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IDList& getCandidateList(int _var);
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int getCandidateSize(int _var);
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/* get the result list of _var in the query graph */
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vector<int*>& getResultList();
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/* get the entity signature of _var in the query graph */
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const EntityBitSet& getEntitySignature(int _var);
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/* check whether the i-th edge of _var is IN edge */
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bool isInEdge(int _var, int _i_th_edge)const;
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/* check whether the i-th edge of _var is OUT edge */
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bool isOutEdge(int _var, int _i_th_edge)const;
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bool isOneDegreeNotSelectVar(std::string& _not_select_var);
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/* check whether _var may include some literal results */
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bool isLiteralVariable(int _var);
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/* check whether _var is literal variable and do not have any entity neighbors */
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bool isFreeLiteralVariable(int _var);
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/* check whether has added _var's literal candidates */
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bool isAddedLiteralCandidate(int _var);
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/* set _var's literal candidates has been added */
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void setAddedLiteralCandidate(int _var);
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private:
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void updateSubSig(int _sub_id, int _pre_id, int _obj_id, std::string _obj, int _line_id);
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void updateObjSig(int _obj_id, int _pre_id, int _sub_id, std::string _sub, int _line_id);
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public:
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/* encode relative signature data of the query graph */
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void encodeBasicQuery(KVstore* _p_kvstore, const std::vector<std::string>& _query_var);
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/* add triple */
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void addTriple(const Triple& _triple);
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/* print whole Basic query */
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void print(ostream& _out_stream);
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int getVarID_MinCandidateList();
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int getVarID_MaxCandidateList();
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int getVarID_FirstProcessWhenJoin();
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static int cmp_result(const void* _a, const void* _b);
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bool dupRemoval_invalidRemoval();
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std::string candidate_str();
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std::string result_str();
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std::string triple_str();
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};
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#endif /* BASICQUERY_H_ */
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