77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
#ifndef OBELISK_KNOWLEDGE_BASE_H
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#define OBELISK_KNOWLEDGE_BASE_H
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#include "models/entity.h"
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#include "models/fact.h"
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#include "models/verb.h"
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#include <sqlite3.h>
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#include <functional>
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#include <iostream>
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#include <memory>
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#include <string>
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namespace obelisk
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{
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class KnowledgeBase
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{
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private:
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const int DEFAULT_FLAGS
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= SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
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const char* filename_;
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sqlite3* dbConnection_ = nullptr;
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int flags_;
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void logSqliteError(int result);
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void enableForeignKeys();
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void createTable(std::function<const char*()> function);
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public:
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KnowledgeBase(const char* filename, int flags);
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KnowledgeBase(const char* filename) :
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KnowledgeBase(filename,
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SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE)
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{
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}
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~KnowledgeBase();
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void addEntities(std::vector<obelisk::Entity>& entities);
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void addVerbs(std::vector<obelisk::Verb>& verbs);
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void addFacts(std::vector<obelisk::Fact>& facts);
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void getEntity(obelisk::Entity& entity);
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void getVerb(obelisk::Verb& verb);
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void getFact(obelisk::Fact& fact);
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void getDouble(double& result, float var1, float var2);
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void getFloat(float& result1, float& result2, double var);
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};
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class KnowledgeBaseException : public std::exception
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{
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private:
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const std::string errorMessage_;
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public:
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KnowledgeBaseException() :
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errorMessage_("an unknown error ocurred")
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{
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}
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KnowledgeBaseException(const std::string& errorMessage) :
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errorMessage_(errorMessage)
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{
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}
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const char* what() const noexcept
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{
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return errorMessage_.c_str();
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}
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};
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} // namespace obelisk
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#endif
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