{

#region Constants and Fields

/// <summary>

/// The sync root.

/// </summary>

private static readonly object SyncRoot = new object();

/// <summary>

/// The blog rolls.

/// </summary>

private static Dictionary<Guid, List<BlogRollItem>> blogRolls;

/// <summary>

/// The blog url.

/// </summary>

private Uri blogUrl;

/// <summary>

/// The description.

/// </summary>

private string description;

/// <summary>

/// The feed url.

/// </summary>

private Uri feedUrl;

/// <summary>

/// The sort index.

/// </summary>

private int sortIndex;

/// <summary>

/// The title.

/// </summary>

private string title;

/// <summary>

/// The xfn string.

/// </summary>

private string xfn;

#endregion

#region Constructors and Destructors

/// <summary>

/// Initializes a new instance of the <see cref = "BlogRollItem" /> class.

/// </summary>

public BlogRollItem()

{

this.Id = Guid.NewGuid();

}

/// <summary>

/// Initializes a new instance of the <see cref="BlogRollItem"/> class.

/// </summary>

/// <param name="title">

/// The title of the BlogRollItem.

/// </param>

/// <param name="description">

/// The description of the BlogRollItem.

/// </param>

/// <param name="blogUrl">

/// The <see cref="Uri"/> of the BlogRollItem.

/// </param>

public BlogRollItem(string title, string description, Uri blogUrl)

{

this.Id = Guid.NewGuid();

this.Title = title;

this.Description = description;

this.BlogUrl = blogUrl;

}

static BlogRollItem()

{

Blog.Saved += (s, e) =>

{

if (e.Action == SaveAction.Delete)

{

Blog blog = s as Blog;

if (blog != null)

{

// remove deleted blog from static 'blogRolls'

if (blogRolls != null && blogRolls.ContainsKey(blog.Id))

blogRolls.Remove(blog.Id);

}

}

};

}

#endregion

#region Properties

/// <summary>

/// Gets all of the BlogRollItems from the data store.

/// </summary>

public static List<BlogRollItem> BlogRolls

{

get

{

Blog blog = Blog.CurrentInstance;

if (blogRolls == null || !blogRolls.ContainsKey(blog.Id))

{

lock (SyncRoot)

{

if (blogRolls == null || !blogRolls.ContainsKey(blog.Id))

{

if (blogRolls == null)

blogRolls = new Dictionary<Guid, List<BlogRollItem>>();

blogRolls[blog.Id] = BlogService.FillBlogRolls();

if(blogRolls[blog.Id] != null)

blogRolls[blog.Id].Sort();

}

}

}

return blogRolls[blog.Id];

}

}

/// <summary>

/// Gets or sets the BlogUrl of the object.

/// </summary>

public Uri BlogUrl

{

get

{

return this.blogUrl;

}

set

{

base.SetValue("BlogUrl", value, ref this.blogUrl);

}

}

/// <summary>

/// Gets or sets the Description of the object.

/// </summary>

public string Description

{

get

{

return this.description;

}

set

{

base.SetValue("Description", value, ref this.description);

}

}

/// <summary>

/// Gets or sets the FeedUrl of the object.

/// </summary>

public Uri FeedUrl

{

get

{

return this.feedUrl;

}

set

{

base.SetValue("FeedUrl", value, ref this.feedUrl);

}

}

/// <summary>

/// Gets or sets the SortIndex of the object.

/// </summary>

public int SortIndex

{

get

{

return this.sortIndex;

}

set

{

base.SetValue("SortIndex", value, ref this.sortIndex);

}

}

/// <summary>

/// Gets or sets the Title of the object.

/// </summary>

public string Title

{

get

{

return this.title;

}

set

{

base.SetValue("Title", value, ref this.title);

}

}

/// <summary>

/// Gets or sets the Xfn of the object.

/// </summary>

public string Xfn

{

get

{

return this.xfn;

}

set

{

base.SetValue("Xfn", value, ref this.xfn);

}

}

#endregion

#region Public Methods

/// <summary>

/// Gets the BlogRollItem from the data store.

/// </summary>

/// <param name="id">The blogroll item id.</param>

/// <returns>The blogroll item.</returns>

public static BlogRollItem GetBlogRollItem(Guid id)

{

return BlogRolls.Find(br => br.Id == id);

}

/// <summary>

/// Returns a <see cref="T:System.String"></see> that represents the current <see cref="T:System.Object"></see>.

/// </summary>

/// <returns>

/// A <see cref="T:System.String"></see> that represents the current <see cref="T:System.Object"></see>.

/// </returns>

public override string ToString()

{

return this.Title;

}

#endregion

#region Implemented Interfaces

#region IComparable<BlogRollItem>

/// <summary>

/// Compares the current object with another object of the same type.

/// </summary>

/// <param name="other">

/// An object to compare with this object.

/// </param>

/// <returns>

/// A 32-bit signed integer that indicates the relative order of the objects being compared.

/// The return value has the following meanings: Value Meaning Less than zero This object is

/// less than the other parameter.Zero This object is equal to other. Greater than zero This object is greater than other.

/// </returns>

public int CompareTo(BlogRollItem other)

{

return this.SortIndex.CompareTo(other.SortIndex);

}

#endregion

#endregion

#region Methods

/// <summary>

/// Deletes the object from the data store.

/// </summary>

protected override void DataDelete()

{

OnSaving(this, SaveAction.Delete);

if (this.Deleted)

{

BlogService.DeleteBlogRoll(this);

}

BlogRolls.Remove(this);

OnSaved(this, SaveAction.Delete);

this.Dispose();

}

/// <summary>

/// Inserts a new object to the data store.

/// </summary>

protected override void DataInsert()

{

OnSaving(this, SaveAction.Insert);

if (this.New)

{

BlogService.InsertBlogRoll(this);

}

OnSaved(this, SaveAction.Insert);

}

/// <summary>

/// Retrieves the object from the data store and populates it.

/// </summary>

/// <param name="id">

/// The unique identifier of the object.

/// </param>

/// <returns>

/// The object that was selected from the data store.

/// </returns>

protected override BlogRollItem DataSelect(Guid id)

{

return BlogService.SelectBlogRoll(id);

}

/// <summary>

/// Updates the object in its data store.

/// </summary>

protected override void DataUpdate()

{

OnSaving(this, SaveAction.Update);

if (this.IsChanged)

{

BlogService.UpdateBlogRoll(this);

}

OnSaved(this, SaveAction.Update);

}

/// <summary>

/// Reinforces the business rules by adding additional rules to the

/// broken rules collection.

/// </summary>

protected override void ValidationRules()

{

this.AddRule("Title", "Title must be set", string.IsNullOrEmpty(this.Title));

this.AddRule("BlogUrl", "BlogUrl must be set", this.BlogUrl == null);

}

#endregion