WeblogPost

Blog的Post记录对应自定义类WeblogPost各个属性
其中保存序列化数据的2个字段，用GetExtendedAttribute和SetExtendedAttribute方法访问

修改可以参见：WeblogPost修改示列

WeblogPost
//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;

using CommunityServer.Components;

namespace CommunityServer.Blogs.Components
{
    /**//// <summary>
    /// Core Weblog content object. Extends Post
    /// </summary>
    [Serializable]
    public class WeblogPost : Post
    {
        public WeblogPost()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        public Weblog Weblog
        {
            get{ return Section as Weblog;}
        }

        //<< Tracking
        public override bool IsTracked
        {
            get
            {
                return GetIsTracked(CSContext.Current.User.UserID);
            }
            set
            {
                //base.IsTracked = value;
            }
        }

        public bool GetIsTracked(int userID)
        {
            return ThreadTracking.IsTracked(this.ThreadID,userID);
        }
        //>>

        //<< private
        private string excerpt;
        private string name;
        private string titleUrl;
        private BlogPostConfig postConfig = BlogPostConfig.Empty;
        private BlogPostType blogPostType = BlogPostType.Post;
        private string[] categories;
        private DateTime _bloggerTime;
        private int authorID;
        private int aggViews;

        private int ratingSum;
        private int totalRatings;
        //>>

        //<< Public

        /**//// <summary>
        /// Short description of post
        /// </summary>
        public string Excerpt
        {
            get{return excerpt;}
            set{excerpt = value;}
        }
        
        /**//// <summary>
        /// Name of the post.
        /// </summary>
        public string Name
        {
            get{return name;}
            set{name = value;}
        }

        /**//// <summary>
        /// Url to use instead of default title link
        /// </summary>
        public string TitleUrl
        {
            get{return titleUrl;}
            set{titleUrl = value;}
        }

        /**//// <summary>
        /// Name of site making the trackback
        /// </summary>
        public string TrackBackName
        {
            get{return this.GetExtendedAttribute("trackbackName");}
            set{this.SetExtendedAttribute("trackbackName",value);}
        }

        public string Custom
        {
            get{return GetString("Custom",null);}
            set{this.SetExtendedAttribute("Custom",value);}
        }

        /**//// <summary>
        /// Name submitted when the post was saved
        /// </summary>
        public string SubmittedUserName
        {
            get{return GetString("SubmittedUserName",null);}
            set{this.SetExtendedAttribute("SubmittedUserName",value);}
        }

        /**//// <summary>
        /// When the post was saved, did the user submit a different name
        /// </summary>
        public bool HasSubmittedUserName
        {
            get{ return !Globals.IsNullorEmpty(this.SubmittedUserName);}
        }

        /**//// <summary>
        /// Timezone refactored date. Converts date of post to the local time of the blogger
        /// </summary>
        public DateTime BloggerTime
        {
            get {  return this._bloggerTime; }
            set {  this._bloggerTime = value; }
        }

        /**//// <summary>
        /// Is this post aggregated
        /// </summary>
        public bool IsAggregated
        {
            get{return GetPostConfig(BlogPostConfig.IsAggregated);}
            set{SetPostConfig(BlogPostConfig.IsAggregated, value);}
        }

        /**//// <summary>
        /// Is this post aggregated to the community root site
        /// </summary>
        public bool IsCommunityAggregated
        {
            get{return GetPostConfig(BlogPostConfig.IsCommunityAggregated);}
            set{SetPostConfig(BlogPostConfig.IsCommunityAggregated, value);}
        }

        /**//// <summary>
        /// Should this post syndicated the excerpt only?
        /// </summary>
        public bool SyndicateExcerpt
        {
            get{return GetPostConfig(BlogPostConfig.SyndicateExcerpt);}
            set{SetPostConfig(BlogPostConfig.SyndicateExcerpt, value);}
        }

        /**//// <summary>
        /// Displayon the individual blogs home page
        /// </summary>
        public bool DisplayOnHomePage
        {
            get{return GetPostConfig(BlogPostConfig.DisplayOnHomePage);}
            set{SetPostConfig(BlogPostConfig.DisplayOnHomePage, value);}
        }

        /**//// <summary>
        /// Should comments to this post be moderated
        /// </summary>
        //        [Obsolete("This method has been replaced by ModerationType")]
        public bool IsModerated
        {
            get{return GetPostConfig(BlogPostConfig.ModerateFeedback);}
            set{SetPostConfig(BlogPostConfig.ModerateFeedback, value);}
        }

        public CommentModerationType ModerationType
        {
            get
            {
                if(IsModerated)
                    return CommentModerationType.All;

                return (CommentModerationType)Enum.Parse(typeof(CommentModerationType),GetString("CommentModerationType","None"),false);
            }
            set
            {
                this.IsModerated = false;
                SetExtendedAttribute("CommentModerationType",value.ToString());
            }
        }

        internal bool EverTracked
        {
            get{return GetBool("EverPublished",false);}
            set{ SetExtendedAttribute("EverPublished",value.ToString());}
        }

        /**//// <summary>
        /// returns true if the Post is approved and th PostDate is less than the current datetime
        /// </summary>
        public bool IsPostEnabled
        {
            get
            {
                return IsApproved && (this.PostDate <= DateTime.Now);
            }
        }


        //Need a better pattern here!

        /**//// <summary>
        /// This value is not persisted! The first time a Weblog Post is saved and EverTracked is set to true, this value
        /// will be true. CSModule subscribers can use this property to determine if one time notifications should be made.
        /// 
        /// </summary>
        internal bool EnableExternalNotificatons;

        public bool EnableRatings
        {
            get{return GetBool("EnableRatings",true);}
            set{ SetExtendedAttribute("EnableRatings",value.ToString());}
        }

        public bool EnableTrackBacks
        {
            get{return GetBool("EnableTrackBacks",true);}
            set{ SetExtendedAttribute("EnableTrackBacks",value.ToString());}
        }

        public bool EnableXmlRpcPings
        {
            get{return GetBool("EnableXmlRpcPings",true);}
            set{ SetExtendedAttribute("EnableXmlRpcPings",value.ToString());}
        }

        /**//// <summary>
        /// Summary of the blog feedback. Not used as an API
        /// </summary>
        public BlogPostConfig PostConfig
        {
            get{return postConfig;}
            set{postConfig = value;}
        }

        /**//// <summary>
        /// list of categories this post was made to
        /// </summary>
        public string[] Categories
        {
            get{return categories;}
            set{categories = value;}
        }

        /**//// <summary>
        /// Specific type of blog post (Post, Article, Comment, Trackback)
        /// </summary>
        public BlogPostType BlogPostType
        {
            get{return blogPostType;}
            set{blogPostType = value;}
        }

        /**//// <summary>
        /// The UserID of the person who wrote the post
        /// </summary>
        public int AuthorID
        {
            get { return authorID; }
            set { authorID = value; }
        }

        /**//// <summary>
        /// The number of aggregate views
        /// </summary>
        public int AggViews
        {
            get { return aggViews; }
            set { aggViews = value; }
        }


        public int RatingSum 
        {
            get 
            {
                return ratingSum;
            }
            set 
            {
                ratingSum = value;
            }
        }

        public int TotalRatings 
        {
            get 
            {
                return totalRatings;
            }
            set 
            {
                totalRatings = value;
            }
        }

        public double Rating 
        {
            get 
            {

                if (TotalRatings == 0)
                    return 0;

                return ( (double) RatingSum / (double) TotalRatings );
            }
        }

        //>>

        //<< Public Helpers

        /**//// <summary>
        /// Does this post have a title url
        /// </summary>
        public bool HasTitleUrl
        {
            get{return (TitleUrl != null && TitleUrl.Length > 0);}
        }

        /**//// <summary>
        /// Does this post of have name
        /// </summary>
        public bool HasName
        {
            get{return (Name != null && Name.Length > 0);}
        }

        /**//// <summary>
        /// Does this post have an excerpt
        /// </summary>
        public bool HasExcerpt
        {
            get{return (Excerpt != null && Excerpt.Length > 0);}
        }

        /**//// <summary>
        /// Does this post have categories
        /// </summary>
        public bool HasCategories
        {
            get{return (Categories != null && Categories.Length > 0);}
        }


        //>>

        //<< Private Helpers

        /**//// <summary>
        /// Helper to set the PostConfig value
        /// </summary>
        /// <param name="bpc"></param>
        /// <param name="isSelected"></param>
        protected void SetPostConfig(BlogPostConfig bpc, bool isSelected)
        {
            if(isSelected)
            {
                PostConfig = PostConfig | bpc;
            }
            else
            {
                PostConfig = PostConfig & ~bpc;
            }
        }

        /**//// <summary>
        /// Helper to get the current post config value
        /// </summary>
        /// <param name="bpc"></param>
        /// <returns></returns>
        protected bool GetPostConfig(BlogPostConfig bpc)
        {
            return IsPostConfigSelected(PostConfig,bpc);// (PostConfig & bpc) == bpc;
        }

        /**//// <summary>
        /// Helper to check if a specific property is set via the PostConfig
        /// </summary>
        public static bool IsPostConfigSelected(BlogPostConfig current, BlogPostConfig item)
        {
            return (current & item) == item;
        }

        //>>

        //<< Section
        private Section section = null; 

        /**//// <summary>
        /// Override Section. Returns the partent "Weblog/Section" for this post
        /// </summary>
        public override Section Section
        {
            get
            {
                if(section == null)
                {
                    section = Weblogs.GetWeblog(this.SectionID,true);
                }
                return section;
            }
            set
            {
                section = value;
            }
        }

        //>>

        
    }


}