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RoleStoreBase.cs
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RoleStoreBase.cs
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// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Security.Claims;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Internal;
namespace Microsoft.AspNetCore.Identity
{
/// <summary>
/// Creates a new instance of a persistence store for roles.
/// </summary>
/// <typeparam name="TRole">The type of the class representing a role.</typeparam>
/// <typeparam name="TKey">The type of the primary key for a role.</typeparam>
/// <typeparam name="TUserRole">The type of the class representing a user role.</typeparam>
/// <typeparam name="TRoleClaim">The type of the class representing a role claim.</typeparam>
public abstract class RoleStoreBase<TRole, TKey, TUserRole, TRoleClaim> :
IQueryableRoleStore<TRole>,
IRoleClaimStore<TRole>
where TRole : IdentityRole<TKey>
where TKey : IEquatable<TKey>
where TUserRole : IdentityUserRole<TKey>, new()
where TRoleClaim : IdentityRoleClaim<TKey>, new()
{
/// <summary>
/// Constructs a new instance of <see cref="RoleStoreBase{TRole, TKey, TUserRole, TRoleClaim}"/>.
/// </summary>
/// <param name="describer">The <see cref="IdentityErrorDescriber"/>.</param>
public RoleStoreBase(IdentityErrorDescriber describer)
{
if (describer == null)
{
throw new ArgumentNullException(nameof(describer));
}
ErrorDescriber = describer;
}
private bool _disposed;
/// <summary>
/// Gets or sets the <see cref="IdentityErrorDescriber"/> for any error that occurred with the current operation.
/// </summary>
public IdentityErrorDescriber ErrorDescriber { get; set; }
/// <summary>
/// Creates a new role in a store as an asynchronous operation.
/// </summary>
/// <param name="role">The role to create in the store.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="IdentityResult"/> of the asynchronous query.</returns>
public abstract Task<IdentityResult> CreateAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Updates a role in a store as an asynchronous operation.
/// </summary>
/// <param name="role">The role to update in the store.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="IdentityResult"/> of the asynchronous query.</returns>
public abstract Task<IdentityResult> UpdateAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Deletes a role from the store as an asynchronous operation.
/// </summary>
/// <param name="role">The role to delete from the store.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that represents the <see cref="IdentityResult"/> of the asynchronous query.</returns>
public abstract Task<IdentityResult> DeleteAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Gets the ID for a role from the store as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose ID should be returned.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that contains the ID of the role.</returns>
public virtual Task<string> GetRoleIdAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (role == null)
{
throw new ArgumentNullException(nameof(role));
}
return Task.FromResult(ConvertIdToString(role.Id));
}
/// <summary>
/// Gets the name of a role from the store as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose name should be returned.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that contains the name of the role.</returns>
public virtual Task<string> GetRoleNameAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (role == null)
{
throw new ArgumentNullException(nameof(role));
}
return Task.FromResult(role.Name);
}
/// <summary>
/// Sets the name of a role in the store as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose name should be set.</param>
/// <param name="roleName">The name of the role.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
public virtual Task SetRoleNameAsync(TRole role, string roleName, CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (role == null)
{
throw new ArgumentNullException(nameof(role));
}
role.Name = roleName;
return Task.CompletedTask;
}
/// <summary>
/// Converts the provided <paramref name="id"/> to a strongly typed key object.
/// </summary>
/// <param name="id">The id to convert.</param>
/// <returns>An instance of <typeparamref name="TKey"/> representing the provided <paramref name="id"/>.</returns>
public virtual TKey ConvertIdFromString(string id)
{
if (id == null)
{
return default(TKey);
}
return (TKey)TypeDescriptor.GetConverter(typeof(TKey)).ConvertFromInvariantString(id);
}
/// <summary>
/// Converts the provided <paramref name="id"/> to its string representation.
/// </summary>
/// <param name="id">The id to convert.</param>
/// <returns>An <see cref="string"/> representation of the provided <paramref name="id"/>.</returns>
public virtual string ConvertIdToString(TKey id)
{
if (id.Equals(default(TKey)))
{
return null;
}
return id.ToString();
}
/// <summary>
/// Finds the role who has the specified ID as an asynchronous operation.
/// </summary>
/// <param name="id">The role ID to look for.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that result of the look up.</returns>
public abstract Task<TRole> FindByIdAsync(string id, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Finds the role who has the specified normalized name as an asynchronous operation.
/// </summary>
/// <param name="normalizedName">The normalized role name to look for.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that result of the look up.</returns>
public abstract Task<TRole> FindByNameAsync(string normalizedName, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Get a role's normalized name as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose normalized name should be retrieved.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that contains the name of the role.</returns>
public virtual Task<string> GetNormalizedRoleNameAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (role == null)
{
throw new ArgumentNullException(nameof(role));
}
return Task.FromResult(role.NormalizedName);
}
/// <summary>
/// Set a role's normalized name as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose normalized name should be set.</param>
/// <param name="normalizedName">The normalized name to set</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
public virtual Task SetNormalizedRoleNameAsync(TRole role, string normalizedName, CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (role == null)
{
throw new ArgumentNullException(nameof(role));
}
role.NormalizedName = normalizedName;
return Task.CompletedTask;
}
/// <summary>
/// Throws if this class has been disposed.
/// </summary>
protected void ThrowIfDisposed()
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
}
/// <summary>
/// Dispose the stores
/// </summary>
public void Dispose() => _disposed = true;
/// <summary>
/// Get the claims associated with the specified <paramref name="role"/> as an asynchronous operation.
/// </summary>
/// <param name="role">The role whose claims should be retrieved.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>A <see cref="Task{TResult}"/> that contains the claims granted to a role.</returns>
public abstract Task<IList<Claim>> GetClaimsAsync(TRole role, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Adds the <paramref name="claim"/> given to the specified <paramref name="role"/>.
/// </summary>
/// <param name="role">The role to add the claim to.</param>
/// <param name="claim">The claim to add to the role.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
public abstract Task AddClaimAsync(TRole role, Claim claim, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// Removes the <paramref name="claim"/> given from the specified <paramref name="role"/>.
/// </summary>
/// <param name="role">The role to remove the claim from.</param>
/// <param name="claim">The claim to remove from the role.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> used to propagate notifications that the operation should be canceled.</param>
/// <returns>The <see cref="Task"/> that represents the asynchronous operation.</returns>
public abstract Task RemoveClaimAsync(TRole role, Claim claim, CancellationToken cancellationToken = default(CancellationToken));
/// <summary>
/// A navigation property for the roles the store contains.
/// </summary>
public abstract IQueryable<TRole> Roles
{
get;
}
/// <summary>
/// Creates a entity representing a role claim.
/// </summary>
/// <param name="role">The associated role.</param>
/// <param name="claim">The associated claim.</param>
/// <returns>The role claim entity.</returns>
protected virtual TRoleClaim CreateRoleClaim(TRole role, Claim claim)
=> new TRoleClaim { RoleId = role.Id, ClaimType = claim.Type, ClaimValue = claim.Value };
}
}