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72 lines
2.7 KiB
72 lines
2.7 KiB
using OrderCriterias;
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using System.Collections.ObjectModel;
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namespace ManagerInterfaces
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{
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/// <summary>
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/// All methods to handle answers
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/// </summary>
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/// <typeparam name="T">a DTO or Entity type answer</typeparam>
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public interface IAnswerManager<T>
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{
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/// <summary>
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/// get the number of T element
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/// </summary>
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/// <returns>the number of T element</returns>
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abstract int getNbElement();
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/// <summary>
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/// get a part of all answers
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/// </summary>
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/// <param name="nb">the actual page</param>
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/// <param name="count">number of T element in a page</param>
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/// <param name="orderCriteria">the order criteria</param>
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/// <returns>
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/// all T element of the database for
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/// this page (or null if (nb-1)*count
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/// is outside boundaries (0, getNbElement()-1)
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/// </returns>
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public IEnumerable<T>? getAnswers(int nb, int count, AnswerOrderCriteria orderCriteria = AnswerOrderCriteria.ById);
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/// <summary>
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/// get a T element with an id
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/// </summary>
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/// <param name="id">the id of the T element question</param>
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/// <returns>
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/// a set of all T element that correspond to this question
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/// </returns>
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public ReadOnlyCollection<T>? getAnswersByIdQuestion(long id);
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/// <summary>
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/// modified a T element with an id
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/// </summary>
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/// <param name="id">the id of the T element</param>
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/// <param name="answer">an answer that contains all modified properties</param>
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/// <returns>
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/// the T element (modified) that corresponde
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/// to the id or null if there isn't any
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/// </returns>
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public T? modifierAnswer(long id, T answer);
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/// <summary>
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/// delete a T element with an id
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/// </summary>
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/// <param name="id">the id of the T element</param>
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/// <returns>
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/// the T element deleted that corresponde
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/// to the id or null if there isn't any
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/// </returns>
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public T? supprimerAnswer(long id);
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/// <summary>
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/// delete a T element
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/// </summary>
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/// <param name="answer">the T element to delete</param>
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public void supprimerAnswer(T answer);
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/// <summary>
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/// add a T element
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/// </summary>
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/// <param name="answer">the answer to add</param>
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/// <returns>
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/// the T element (modified) that corresponde
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/// to the id or null if there isn't any
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/// </returns>
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public T ajouterAnswer(T answer);
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}
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}
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