add entity documentation

src/models/entity.h

@@ -7,46 +7,119 @@
 
 namespace obelisk
 {
+    /**
+     * @brief The Entity model represents either a left or right side entity,
+     * typically used in facts and rules.
+     *
+     */
     class Entity
     {
         private:
+            /**
+             * @brief The ID of the Entity.
+             *
+             */
             int id_;
+            /**
+             * @brief The name of the Entity.
+             *
+             */
             std::string name_;
 
         public:
+            /**
+             * @brief Construct a new Entity object.
+             *
+             */
             Entity() :
                 id_(0),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             */
             Entity(int id) :
                 id_(id),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] name The name of the Entity.
+             */
             Entity(std::string name) :
                 id_(0),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             * @param[in] name The name of the Entity.
+             */
             Entity(int id, std::string name) :
                 id_(id),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Create the table in the knowledge base.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
             static const char* createTable();
 
+            /**
+             * @brief Get the ID of the Entity.
+             *
+             * @return int& Returns the ID.
+             */
             int& getId();
+
+            /**
+             * @brief Set the ID of the Entity.
+             *
+             * @param[in] id The ID of the Entity.
+             */
             void setId(int id);
 
+            /**
+             * @brief Get the name of the Entity.
+             *
+             * @return std::string& The name of the Entity.
+             */
             std::string& getName();
+
+            /**
+             * @brief Set the name of the Entity.
+             *
+             * @param[in] name The name of the Entity.
+             */
             void setName(std::string name);
 
+            /**
+             * @brief Select an Entity from the database based on the object's
+             * ID.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
             void selectEntity(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert an Entity into the database based on the object's
+             * fields.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
             void insertEntity(sqlite3* dbConnection);
     };
 } // namespace obelisk