21 líneas
		
	
	
		
			504 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			21 líneas
		
	
	
		
			504 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| #ifndef USERDAO_H
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| #define USERDAO_H
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| #include <string>
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| #include <optional>
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| #include "../user.h"
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| #include "queryoption.h"
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| class UserDao
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| {
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|   public:
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| 	UserDao();
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| 	virtual bool exists(std::string username) = 0;
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| 	virtual std::optional<User> find(std::string username) = 0;
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| 	virtual std::optional<User> find(int id) = 0;
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| 	virtual std::vector<User> list(QueryOption o) = 0;
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| 	virtual void deleteUser(std::string username) = 0;
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| 	virtual void save(const User &u) = 0;
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| 	virtual ~UserDao(){};
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| };
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| 
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| #endif // USERDAO_H
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