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ArrayDatabase.cs
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ArrayDatabase.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using source.Infrastructure.Serialization;
namespace source.Infrastructure.Databases
{
public class ArrayDatabase<T> : IDatabase<T>
{
private T[] Data { get; }
private ISerializer Serializer { get; }
public ArrayDatabase(Stream stream, ISerializer serializer)
{
Serializer = serializer;
Data = LoadDatabase(stream);
}
public IEnumerable<T> GetAllSuitable(Func<T, bool> condition) =>
Data.Where(condition);
public T GetAnySuitable(Func<T, bool> condition)
{
try
{
return Data.First(condition);
}
catch (InvalidOperationException a)
{
throw new InvalidOperationException("Нет подходящего элемента в базе данных",a);
}
}
private T[] LoadDatabase(Stream stream)
{
using (stream)
{
return Serializer.Deserialize<T[]>(stream);
}
}
}
}