64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
#ifndef OBELISK_KNOWLEDGE_BASE_H
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#define OBELISK_KNOWLEDGE_BASE_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 <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 createTable(std::function<const char*()> function);
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public:
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KnowledgeBase(const char* filename);
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KnowledgeBase(const char* filename, int flags);
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~KnowledgeBase();
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template<typename T, typename U>
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int addFacts(std::string verb, T leftEntities, U rightEntities);
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// TODO: add parameter for fact
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template<typename T, typename U>
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int addRules(std::string verb, T leftEntities, U rightEntities);
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template<typename T, typename U> int addActions();
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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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