Documentation Coverage Report
Current view: top level - Cqrs/Repositories - InMemoryDatabase.cs Hit Total Coverage
Version: 2.2 Artefacts: 13 13 100.0 %
Date: 2017-09-22

          Line data    Source code
       1             : #region Copyright
       2             : // // -----------------------------------------------------------------------
       3             : // // <copyright company="Chinchilla Software Limited">
       4             : // //   Copyright Chinchilla Software Limited. All rights reserved.
       5             : // // </copyright>
       6             : // // -----------------------------------------------------------------------
       7             : #endregion
       8             : 
       9             : using System;
      10             : using System.Collections;
      11             : using System.Collections.Concurrent;
      12             : using System.Collections.Generic;
      13             : using System.Linq;
      14             : using Cqrs.Entities;
      15             : 
      16             : namespace Cqrs.Repositories
      17             : {
      18             :         /// <summary>
      19             :         /// Uses a static <see cref="ConcurrentDictionary{TKey,TValue}"/> to store data accessible by all threads.
      20             :         /// </summary>
      21             :         public class InMemoryDatabase
      22           1 :         {
      23             :                 private static IDictionary<Type, object> Database { get; set; }
      24             : 
      25             :                 static InMemoryDatabase()
      26             :                 {
      27             :                         Database = new ConcurrentDictionary<Type, object>();
      28             :                 }
      29             : 
      30             :                 /// <summary>
      31             :                 /// Gets all instances of the specific <typeparamref name="TEntity"/> grouped by their ID.
      32             :                 /// </summary>
      33           1 :                 public IDictionary<Guid, TEntity> Get<TEntity>()
      34             :                         where TEntity : Entity
      35             :                 {
      36             :                         IDictionary<Guid, TEntity> result;
      37             :                         if (!Database.ContainsKey(typeof(TEntity)))
      38             :                         {
      39             :                                 result = new Dictionary<Guid, TEntity>();
      40             :                                 Database.Add(typeof(TEntity), result);
      41             :                         }
      42             :                         else
      43             :                         {
      44             :                                 object rawResult = Database[typeof(TEntity)];
      45             :                                 result = (IDictionary<Guid, TEntity>)rawResult;
      46             :                         }
      47             :                         return result;
      48             :                 }
      49             : 
      50             :                 /// <summary>
      51             :                 /// Gets all instances of the specific <typeparamref name="TEntity"/>
      52             :                 /// </summary>
      53           1 :                 public IList<TEntity> GetAll<TEntity>()
      54             :                         where TEntity : Entity
      55             :                 {
      56             :                         IDictionary<Guid, TEntity> result = Get<TEntity>();
      57             : 
      58             :                         return new CollectionWrapper<TEntity>(result);
      59             :                 }
      60             : 
      61             :                 class CollectionWrapper<TEntity> : IList<TEntity>
      62             :                         where TEntity : Entity
      63             :                 {
      64             :                         IDictionary<Guid, TEntity> Source { get; set; }
      65             : 
      66             :                         /// <summary>
      67             :                         /// Instantiates a new instance of <see cref="CollectionWrapper{TEntity}"/>
      68             :                         /// </summary>
      69           1 :                         public CollectionWrapper(IDictionary<Guid, TEntity> source)
      70             :                         {
      71             :                                 Source = source;
      72             :                         }
      73             : 
      74             :                         #region Implementation of IEnumerable
      75             : 
      76             :                         /// <summary>
      77             :                         /// Returns an enumerator that iterates through the collection.
      78             :                         /// </summary>
      79             :                         /// <returns>
      80             :                         /// A <see cref="T:System.Collections.Generic.IEnumerator`1"/> that can be used to iterate through the collection.
      81             :                         /// </returns>
      82           1 :                         public IEnumerator<TEntity> GetEnumerator()
      83             :                         {
      84             :                                 return Source.Values.GetEnumerator();
      85             :                         }
      86             : 
      87             :                         /// <summary>
      88             :                         /// Returns an enumerator that iterates through a collection.
      89             :                         /// </summary>
      90             :                         /// <returns>
      91             :                         /// An <see cref="T:System.Collections.IEnumerator"/> object that can be used to iterate through the collection.
      92             :                         /// </returns>
      93             :                         IEnumerator IEnumerable.GetEnumerator()
      94             :                         {
      95             :                                 return GetEnumerator();
      96             :                         }
      97             : 
      98             :                         #endregion
      99             : 
     100             :                         #region Implementation of ICollection<T>
     101             : 
     102             :                         /// <summary>
     103             :                         /// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1"/>.
     104             :                         /// </summary>
     105             :                         /// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param><exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.</exception>
     106           1 :                         public void Add(TEntity item)
     107             :                         {
     108             :                                 Source.Add(item.Rsn, item);
     109             :                         }
     110             : 
     111             :                         /// <summary>
     112             :                         /// Removes all items from the <see cref="T:System.Collections.Generic.ICollection`1"/>.
     113             :                         /// </summary>
     114             :                         /// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only. </exception>
     115           1 :                         public void Clear()
     116             :                         {
     117             :                                 Source.Clear();
     118             :                         }
     119             : 
     120             :                         /// <summary>
     121             :                         /// Determines whether the <see cref="T:System.Collections.Generic.ICollection`1"/> contains a specific value.
     122             :                         /// </summary>
     123             :                         /// <returns>
     124             :                         /// true if <paramref name="item"/> is found in the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false.
     125             :                         /// </returns>
     126             :                         /// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
     127           1 :                         public bool Contains(TEntity item)
     128             :                         {
     129             :                                 return Source.Values.Contains(item);
     130             :                         }
     131             : 
     132             :                         /// <summary>
     133             :                         /// Copies the elements of the <see cref="T:System.Collections.Generic.ICollection`1"/> to an <see cref="T:System.Array"/>, starting at a particular <see cref="T:System.Array"/> index.
     134             :                         /// </summary>
     135             :                         /// <param name="array">The one-dimensional <see cref="T:System.Array"/> that is the destination of the elements copied from <see cref="T:System.Collections.Generic.ICollection`1"/>. The <see cref="T:System.Array"/> must have zero-based indexing.</param>
     136             :                         /// <param name="arrayIndex">The zero-based index in <paramref name="array"/> at which copying begins.</param>
     137             :                         /// <exception cref="T:System.ArgumentNullException"><paramref name="array"/> is null.</exception>
     138             :                         /// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="arrayIndex"/> is less than 0.</exception>
     139             :                         /// <exception cref="T:System.ArgumentException"><paramref name="array"/> is multidimensional.-or-The number of elements in the source <see cref="T:System.Collections.Generic.ICollection`1"/> is greater than the available space from <paramref name="arrayIndex"/> to the end of the destination <paramref name="array"/>.-or-Type <typeparamref name="TEntity"/> cannot be cast automatically to the type of the destination <paramref name="array"/>.</exception>
     140           1 :                         public void CopyTo(TEntity[] array, int arrayIndex)
     141             :                         {
     142             :                                 Source.Values.CopyTo(array, arrayIndex);
     143             :                         }
     144             : 
     145             :                         /// <summary>
     146             :                         /// Removes the first occurrence of a specific object from the <see cref="T:System.Collections.Generic.ICollection`1"/>.
     147             :                         /// </summary>
     148             :                         /// <returns>
     149             :                         /// true if <paramref name="item"/> was successfully removed from the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false. This method also returns false if <paramref name="item"/> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1"/>.
     150             :                         /// </returns>
     151             :                         /// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param><exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.</exception>
     152           1 :                         public bool Remove(TEntity item)
     153             :                         {
     154             :                                 return Source.Remove(item.Rsn);
     155             :                         }
     156             : 
     157             :                         /// <summary>
     158             :                         /// Gets the number of elements contained in the <see cref="T:System.Collections.Generic.ICollection`1"/>.
     159             :                         /// </summary>
     160             :                         /// <returns>
     161             :                         /// The number of elements contained in the <see cref="T:System.Collections.Generic.ICollection`1"/>.
     162             :                         /// </returns>
     163             :                         public int Count
     164             :                         {
     165             :                                 get { return Source.Count; }
     166             :                         }
     167             : 
     168             :                         /// <summary>
     169             :                         /// Gets a value indicating whether the <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only.
     170             :                         /// </summary>
     171             :                         /// <returns>
     172             :                         /// true if the <see cref="T:System.Collections.Generic.ICollection`1"/> is read-only; otherwise, false.
     173             :                         /// </returns>
     174             :                         public bool IsReadOnly
     175             :                         {
     176             :                                 get { return Source.IsReadOnly; }
     177             :                         }
     178             : 
     179             :                         #endregion
     180             : 
     181             :                         #region Implementation of IList<T>
     182             : 
     183             :                         /// <summary>
     184             :                         /// Determines the index of a specific item in the <see cref="T:System.Collections.Generic.IList`1"/>.
     185             :                         /// </summary>
     186             :                         /// <returns>
     187             :                         /// The index of <paramref name="item"/> if found in the list; otherwise, -1.
     188             :                         /// </returns>
     189             :                         /// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.IList`1"/>.</param>
     190           1 :                         public int IndexOf(TEntity item)
     191             :                         {
     192             :                                 return Source.Values.ToList().IndexOf(item);
     193             :                         }
     194             : 
     195             :                         /// <summary>
     196             :                         /// Inserts an item to the <see cref="T:System.Collections.Generic.IList`1"/> at the specified index.
     197             :                         /// </summary>
     198             :                         /// <param name="index">The zero-based index at which <paramref name="item"/> should be inserted.</param><param name="item">The object to insert into the <see cref="T:System.Collections.Generic.IList`1"/>.</param><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.</exception><exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.IList`1"/> is read-only.</exception>
     199           1 :                         public void Insert(int index, TEntity item)
     200             :                         {
     201             :                                 Add(item);
     202             :                         }
     203             : 
     204             :                         /// <summary>
     205             :                         /// Removes the <see cref="T:System.Collections.Generic.IList`1"/> item at the specified index.
     206             :                         /// </summary>
     207             :                         /// <param name="index">The zero-based index of the item to remove.</param><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.</exception><exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.Generic.IList`1"/> is read-only.</exception>
     208           1 :                         public void RemoveAt(int index)
     209             :                         {
     210             :                                 Remove(Source.Values.ToList()[index]);
     211             :                         }
     212             : 
     213             :                         /// <summary>
     214             :                         /// Gets or sets the element at the specified index.
     215             :                         /// </summary>
     216             :                         /// <returns>
     217             :                         /// The element at the specified index.
     218             :                         /// </returns>
     219             :                         /// <param name="index">The zero-based index of the element to get or set.</param><exception cref="T:System.ArgumentOutOfRangeException"><paramref name="index"/> is not a valid index in the <see cref="T:System.Collections.Generic.IList`1"/>.</exception><exception cref="T:System.NotSupportedException">The property is set and the <see cref="T:System.Collections.Generic.IList`1"/> is read-only.</exception>
     220             :                         public TEntity this[int index]
     221             :                         {
     222             :                                 get { return Source.Values.ToList()[index]; }
     223             :                                 set { Source[this[index].Rsn] = value; }
     224             :                         }
     225             : 
     226             :                         #endregion
     227             :                 }
     228             :         }
     229             : }

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