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RavenDB - An Introduction

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28 Apr 2010CPOL7 min read 261.5K   2.7K   112  
An introduction to RavenDB - a new open source .NET document database using .NET 4.0 and VS 2010
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Raven.Database.Indexing;

namespace Raven.Database.Tasks
{
	public abstract class Task
	{
		public string Index { get; set; }

		public string Type
		{
			get { return GetType().FullName; }
		}

		public string AsString()
		{
			var stringWriter = new StringWriter();
			new JsonSerializer().Serialize(stringWriter, this);
			return stringWriter.GetStringBuilder().ToString();
		}

		public static Task ToTask(string task)
		{
			var json = JObject.Parse(task);
			var typename = json.Property("Type").Value.Value<string>();
			var type = typeof (Task).Assembly.GetType(typename);
			return (Task) new JsonSerializer().Deserialize(new StringReader(task), type);
		}

		/// <summary>
		/// 	Tasks may NOT perform any writes operations on the TransactionalStorage!
		/// 	That is required because a failed task still commit  the TransactionalStorage 
		/// 	(to remove from the tasks).
		/// 	Another requirement is that executing task MUST be idempotent.
		/// </summary>
		public abstract void Execute(WorkContext context);
	}
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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United States United States
I've been a software developer since 1996 and have enjoyed C# since 2003. I have a Bachelor's degree in Computer Science and for some reason, a Master's degree in Business Administration. I currently do software development contracting/consulting.

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