607 lines
22 KiB
C#
607 lines
22 KiB
C#
using System;
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using System.Configuration;
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using System.Configuration.Provider;
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using Npgsql;
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using System.Collections.Generic;
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using Yavsc.Model.Blogs;
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using Yavsc.Model.Circles;
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using System.Web.Mvc;
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using NpgsqlTypes;
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namespace Npgsql.Web.Blog
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{
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/// <summary>
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/// Npgsql blog provider.
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/// </summary>
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public class NpgsqlBlogProvider : BlogProvider
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{
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string applicationName;
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string connectionString;
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#region implemented abstract members of BlogProvider
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/// <summary>
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/// Tag the specified postid and tag.
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/// </summary>
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/// <param name="postid">Postid.</param>
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/// <param name="tag">Tag.</param>
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public override long Tag (long postid, string tag)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into bltag (blid,tag) values (@postid,@tag) returning _id";
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cmd.Parameters.AddWithValue("@tag",tag);
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cmd.Parameters.AddWithValue("@postid",postid);
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cnx.Open ();
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return (long) cmd.ExecuteScalar ();
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}
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}
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/// <summary>
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/// Removes the tag.
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/// </summary>
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/// <param name="tagid">Tagid.</param>
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public override void RemoveTag (long tagid)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from bltag where _id = @tagid";
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cmd.Parameters.AddWithValue("@tagid",tagid);
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cnx.Open ();
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cmd.ExecuteNonQuery ();
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}
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}
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/// <summary>
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/// Gets the comments.
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/// </summary>
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/// <returns>The comments.</returns>
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/// <param name="postid">Postid.</param>
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/// <param name="getHidden">If set to <c>true</c> get hidden.</param>
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public override Comment[] GetComments (long postid, bool getHidden)
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{
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List<Comment> cmts = new List<Comment> ();
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using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand()) {
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cmd.CommandText = "select _id, username, bcontent, modified, posted, visible from comment " +
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"where applicationname = @appname and postid = @id" +
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((getHidden) ? " and visible = true ":" ") +
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"order by posted asc" ;
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cmd.Parameters.AddWithValue ("@appname", applicationName);
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cmd.Parameters.AddWithValue ("@id", postid);
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cnx.Open ();
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using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
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while (rdr.Read ()) {
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Comment c = new Comment();
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c.CommentText = rdr.GetString (rdr.GetOrdinal ("bcontent"));
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c.From = rdr.GetString (rdr.GetOrdinal ("username"));
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c.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
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c.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
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c.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
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c.PostId = postid;
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c.Id = rdr.GetInt64(rdr.GetOrdinal("_id"));
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cmts.Add (c);
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}
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}
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}
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return cmts.ToArray();
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}
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/// <summary>
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/// Updates the post.
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/// </summary>
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/// <param name="postid">Postid.</param>
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/// <param name="title">Title.</param>
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/// <param name="content">Content.</param>
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/// <param name="visible">If set to <c>true</c> visible.</param>
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/// <param name="cids">Circle identifiers</param>
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public override void UpdatePost (long postid, string title, string content,
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bool visible, long [] cids)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection(connectionString)) {
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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DateTime now = DateTime.Now;
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cmd.CommandText =
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"update blog set modified=@now," +
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" title = @title," +
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" bcontent=@content, " +
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" visible = @visible " +
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"where _id = @id";
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cmd.Parameters.AddWithValue ("@now", now);
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cmd.Parameters.AddWithValue ("@title", title);
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cmd.Parameters.AddWithValue ("@content", content);
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cmd.Parameters.AddWithValue ("@visible", visible);
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cmd.Parameters.AddWithValue ("@id", postid);
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cnx.Open ();
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cmd.ExecuteNonQuery ();
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}
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cnx.Close();
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}
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UpdatePostCircles (postid, cids);
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}
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/// <summary>
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/// Removes the post.
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/// </summary>
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/// <param name="postid">Postid.</param>
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public override void RemovePost (long postid)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from blog where _id = @id";
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cmd.Parameters.AddWithValue ("id", postid);
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cnx.Open ();
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cmd.ExecuteNonQuery();
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}
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}
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/// <summary>
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/// Comment the specified from, postid and content.
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/// </summary>
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/// <param name="from">From.</param>
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/// <param name="postid">Postid.</param>
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/// <param name="content">Content.</param>
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public override long Comment (string from, long postid, string content)
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{
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if (from == null)
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throw new ArgumentNullException("from");
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if (content == null)
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throw new ArgumentNullException("content");
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bool visible = AutoValidatesComments;
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using (NpgsqlConnection cnx=
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new NpgsqlConnection(connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand()) {
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cmd.CommandText = "insert into comment (postid,bcontent," +
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"modified,posted,visible,username,applicationname)" +
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"values (@postid,@bcontent,@modified,@posted," +
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"@visible,@username,@appname) returning _id";
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cmd.Parameters.AddWithValue ("@postid", postid);
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cmd.Parameters.AddWithValue ("@bcontent", content);
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DateTime now = DateTime.Now;
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cmd.Parameters.AddWithValue ("@modified", now);
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cmd.Parameters.AddWithValue ("@posted", now);
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cmd.Parameters.AddWithValue ("@visible", visible);
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cmd.Parameters.AddWithValue ("@username", from);
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cmd.Parameters.AddWithValue ("@appname", applicationName);
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cnx.Open ();
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return (long) cmd.ExecuteScalar();
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}
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}
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/// <summary>
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/// Validates the comment.
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/// </summary>
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/// <param name="cmtid">Cmtid.</param>
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public override void ValidateComment (long cmtid)
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{
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throw new NotImplementedException ();
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}
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/// <summary>
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/// Updates the comment.
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/// </summary>
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/// <param name="cmtid">Cmtid.</param>
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/// <param name="content">Content.</param>
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/// <param name="visible">If set to <c>true</c> visible.</param>
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public override void UpdateComment
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(long cmtid, string content, bool visible)
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{
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throw new NotImplementedException ();
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}
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private bool autoValidateComment = true;
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/// <summary>
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/// Gets or sets a value indicating whether this <see cref="Npgsql.Web.Blog.NpgsqlBlogProvider"/> auto validate comment.
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/// </summary>
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/// <value><c>true</c> if auto validate comment; otherwise, <c>false</c>.</value>
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public override bool AutoValidatesComments {
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get {
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return autoValidateComment;
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}
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set {
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autoValidateComment=value;
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}
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}
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/// <summary>
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/// Blogs the title.
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/// </summary>
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/// <returns>The title.</returns>
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/// <param name="username">Username.</param>
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public override string BlogTitle
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(string username)
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{
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throw new NotImplementedException ();
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}
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#endregion
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/// <summary>
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/// Initialize the specified name and config.
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/// </summary>
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/// <param name="name">Name.</param>
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/// <param name="config">Config.</param>
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public override void Initialize
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(string name, System.Collections.Specialized.NameValueCollection config)
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{
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string cnxName = config ["connectionStringName"];
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connectionString = ConfigurationManager.ConnectionStrings [cnxName].ConnectionString;
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config.Remove ("connectionStringName");
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applicationName = config ["applicationName"];
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config.Remove ("applicationName");
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defaultPageSize = int.Parse ( config ["pageLen"] ?? "10") ;
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base.Initialize (name, config);
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}
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#region implemented abstract members of BlogProvider
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/// <summary>
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/// Gets the post.
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/// </summary>
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/// <returns>The post.</returns>
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/// <param name="postid">Postid.</param>
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public override BlogEntry GetPost (long postid)
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{
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BlogEntry be = null;
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using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand()) {
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cmd.CommandText = "select username, title, bcontent, modified, posted, visible, photo from blog " +
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"where applicationname = @appname and _id = @id";
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cmd.Parameters.AddWithValue ("@appname", applicationName);
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cmd.Parameters.AddWithValue ("@id", postid);
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cnx.Open ();
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using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
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if (rdr.Read ()) {
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be = new BlogEntry ();
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be.Title = rdr.GetString (rdr.GetOrdinal ("title"));
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be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
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be.Author = rdr.GetString (rdr.GetOrdinal ("username"));
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be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
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be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
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be.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
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int oph = rdr.GetOrdinal ("photo");
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if (!rdr.IsDBNull(oph))
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be.Photo = rdr.GetString (oph);
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be.Id = postid;
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}
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}
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}
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if (be!=null) SetCirclesOn (be);
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return be;
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}
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/// <summary>
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/// Removes the comment.
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/// </summary>
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/// <returns>The comment.</returns>
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/// <param name="cmtid">Cmtid.</param>
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public override long RemoveComment (long cmtid)
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{
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long postid = 0;
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from comment where _id = @id returning postid";
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cmd.Parameters.AddWithValue ("id", cmtid);
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cnx.Open ();
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postid = (long) cmd.ExecuteScalar ();
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}
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return postid;
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}
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/// <summary>
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/// Gets the post.
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/// </summary>
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/// <returns>The post.</returns>
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/// <param name="username">Username.</param>
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/// <param name="title">Title.</param>
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public override UUTBlogEntryCollection GetPost (string username, string title)
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{
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UUTBlogEntryCollection bec = new UUTBlogEntryCollection (username,title);
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "select _id,bcontent,modified,posted,visible,photo from blog " +
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"where applicationname = :appname and username = :username and title = :title";
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cmd.Parameters.AddWithValue ("appname", NpgsqlDbType.Varchar, applicationName);
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cmd.Parameters.AddWithValue ("username", NpgsqlDbType.Varchar ,username);
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cmd.Parameters.AddWithValue ("title", NpgsqlDbType.Varchar, title);
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cnx.Open ();
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cmd.Prepare ();
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using (NpgsqlDataReader rdr = cmd.ExecuteReader ()) {
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while (rdr.Read ()) {
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BlogEntry be = new BlogEntry ();
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be.Title = title;
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be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
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be.Author = username;
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be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
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be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
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be.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
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be.Id = rdr.GetInt64 (rdr.GetOrdinal ("_id"));
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{
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int oph = rdr.GetOrdinal ("photo");
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if (!rdr.IsDBNull (oph))
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be.Photo = rdr.GetString (oph);
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}
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bec.Add (be);
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}
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rdr.Close ();
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}
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}
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if (bec.Count != 0) {
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using (NpgsqlCommand cmdtags = cnx.CreateCommand ()) {
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long pid = 0;
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cmdtags.CommandText = "select tag.name from tag,tagged where tag._id = tagged.tagid and tagged.postid = :postid";
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cmdtags.Parameters.AddWithValue ("postid", NpgsqlTypes.NpgsqlDbType.Bigint, pid);
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cmdtags.Prepare ();
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foreach (BlogEntry be in bec) {
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List<string> tags = new List<string> ();
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cmdtags.Parameters ["postid"].Value = be.Id;
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using (NpgsqlDataReader rdrt = cmdtags.ExecuteReader ()) {
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while (rdrt.Read ()) {
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tags.Add (rdrt.GetString (0));
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}
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}
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be.Tags = tags.ToArray ();
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}
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}
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SetCirclesOn (bec);
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}
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}
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return bec;
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}
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private void SetCirclesOn(BlogEntry be)
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{
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List<long> circles = new List<long> ();
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
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using (NpgsqlCommand cmdcircles = cnx.CreateCommand ()) {
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cmdcircles.CommandText = "select a.circle_id from blog_access a " +
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"where a.post_id = :pid";
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cmdcircles.Parameters.AddWithValue ("pid", be.Id);
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cnx.Open ();
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using (NpgsqlDataReader rdr = cmdcircles.ExecuteReader ()) {
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while (rdr.Read ()) {
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circles.Add (rdr.GetInt64 (0));
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}
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}
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}
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be.AllowedCircles = circles.ToArray ();
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}
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private void SetCirclesOn(BlogEntryCollection bec)
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{
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foreach (BlogEntry be in bec) {
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SetCirclesOn (be);
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}
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}
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/// <summary>
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/// Post the specified username, title, content and visible.
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/// </summary>
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/// <param name="username">Username.</param>
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/// <param name="title">Title.</param>
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/// <param name="content">Content.</param>
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/// <param name="visible">If set to <c>true</c> visible.</param>
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/// <param name="circles">.</param>
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public override long Post (string username, string title, string content, bool visible, long [] circles)
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{
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long pid = 0;
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if (username == null)
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throw new ArgumentNullException("username");
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if (title == null)
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throw new ArgumentNullException("title");
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if (content == null)
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throw new ArgumentNullException("content");
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into blog (title,bcontent,modified,posted,visible,username,applicationname)" +
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"values (:title,:bcontent,:modified,:posted,:visible,:username,:appname) returning _id";
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cmd.Parameters.AddWithValue ("title", title);
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cmd.Parameters.AddWithValue ("bcontent", content);
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DateTime now = DateTime.Now;
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cmd.Parameters.AddWithValue ("modified", now);
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cmd.Parameters.AddWithValue ("posted", now);
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cmd.Parameters.AddWithValue ("visible", visible);
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cmd.Parameters.AddWithValue ("username", username);
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cmd.Parameters.AddWithValue ("appname", applicationName);
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cnx.Open ();
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pid = (long)cmd.ExecuteScalar ();
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}
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cnx.Close ();
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}
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UpdatePostCircles (pid, circles);
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return pid;
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}
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/// <summary>
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/// Updates the post photo.
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/// </summary>
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/// <param name="pid">Pid.</param>
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/// <param name="photo">Photo.</param>
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public override void UpdatePostPhoto ( long pid, string photo)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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cnx.Open ();
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "update blog set photo = :photo where _id = :pid";
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cmd.Parameters.AddWithValue ("pid", pid);
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cmd.Parameters.AddWithValue ("photo", photo);
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cmd.ExecuteNonQuery ();
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}
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cnx.Close ();
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}
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}
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private void UpdatePostCircles( long pid, long[] circles)
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{
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using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString)) {
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cnx.Open ();
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "delete from blog_access where post_id = :pid";
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cmd.Parameters.AddWithValue ("pid", pid);
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cmd.ExecuteNonQuery ();
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}
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if (circles!=null)
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if (circles.Length>0)
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using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
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cmd.CommandText = "insert into blog_access (post_id,circle_id) values (:pid,:cid)";
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cmd.Parameters.AddWithValue ("pid", pid);
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cmd.Parameters.Add ("cid", NpgsqlTypes.NpgsqlDbType.Bigint);
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cmd.Prepare ();
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foreach (long ci in circles) {
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cmd.Parameters ["cid"].Value = ci;
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cmd.ExecuteNonQuery ();
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}
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}
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cnx.Close ();
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}
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}
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/// <summary>
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/// Finds the post.
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/// </summary>
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/// <returns>The post.</returns>
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/// <param name="readersName">Reader's Name.</param>
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/// <param name="pattern">Pattern.</param>
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/// <param name="searchflags">Searchflags.</param>
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/// <param name="pageIndex">Page index.</param>
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/// <param name="pageSize">Page size.</param>
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/// <param name="totalRecords">Total records.</param>
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public override BlogEntryCollection FindPost (string readersName, string pattern, FindBlogEntryFlags searchflags, int pageIndex, int pageSize, out int totalRecords)
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{
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BlogEntryCollection c = new BlogEntryCollection ();
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totalRecords = 0;
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using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
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using (NpgsqlCommand cmd = cnx.CreateCommand()) {
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if (readersName != null) {
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cmd.CommandText = "select _id, title,bcontent, modified," +
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"posted,username,visible " +
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"from blog b left outer join " +
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"(select count(*)>0 acc, a.post_id pid " +
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"from blog_access a," +
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" circle_members m, users u where m.circle_id = a.circle_id " +
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" and m.member = u.username and u.username = :uname " +
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" and u.applicationname = :appname " +
|
|
" group by a.post_id) ma on (ma.pid = b._id) " +
|
|
"where ( ((ma.acc IS NULL or ma.acc = TRUE) and b.Visible IS TRUE ) or b.username = :uname) ";
|
|
cmd.Parameters.AddWithValue ("uname", readersName);
|
|
} else {
|
|
cmd.CommandText = "select _id, title,bcontent,modified," +
|
|
"posted,username,visible " +
|
|
"from blog b left outer join " +
|
|
"(select count(*)>0 acc, a.post_id pid " +
|
|
"from blog_access a" +
|
|
" group by a.post_id) ma on (ma.pid = b._id)" +
|
|
" where " +
|
|
" ma.acc IS NULL and " +
|
|
" b.Visible IS TRUE and " +
|
|
" applicationname = :appname";
|
|
}
|
|
cmd.Parameters.AddWithValue ("@appname", applicationName);
|
|
if ((searchflags & FindBlogEntryFlags.MatchContent) > 0) {
|
|
cmd.CommandText += " and bcontent like :bcontent";
|
|
cmd.Parameters.AddWithValue (":bcontent", pattern);
|
|
}
|
|
if ((searchflags & FindBlogEntryFlags.MatchTitle) > 0) {
|
|
cmd.CommandText += " and title like :title";
|
|
cmd.Parameters.AddWithValue (":title", pattern);
|
|
}
|
|
if ((searchflags & FindBlogEntryFlags.MatchUserName) > 0) {
|
|
cmd.CommandText += " and username like :username";
|
|
cmd.Parameters.AddWithValue (":username", pattern);
|
|
}
|
|
if ((searchflags & FindBlogEntryFlags.MatchInvisible) == 0) {
|
|
cmd.CommandText += " and visible = true";
|
|
}
|
|
|
|
cmd.CommandText += " order by posted desc";
|
|
cnx.Open ();
|
|
using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
|
|
// pageIndex became one based
|
|
int firstrec = pageIndex * pageSize;
|
|
int lastrec = firstrec + pageSize - 1;
|
|
while (rdr.Read()) {
|
|
if (totalRecords >= firstrec && totalRecords <= lastrec) {
|
|
BlogEntry be = new BlogEntry ();
|
|
be.Title = rdr.GetString (rdr.GetOrdinal ("title"));
|
|
be.Id = rdr.GetInt64 (rdr.GetOrdinal ("_id"));
|
|
be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.Author = rdr.GetString (rdr.GetOrdinal ("username"));
|
|
be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
|
|
be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
|
|
be.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
|
|
c.Add (be);
|
|
}
|
|
totalRecords++;
|
|
}
|
|
rdr.Close ();
|
|
}
|
|
}
|
|
foreach (BlogEntry be in c)
|
|
SetCirclesOn (be);
|
|
|
|
return c;
|
|
}
|
|
/// <summary>
|
|
/// Removes the post.
|
|
/// </summary>
|
|
/// <param name="username">Username.</param>
|
|
/// <param name="title">Title.</param>
|
|
public override void RemoveTitle (string username, string title)
|
|
{
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
cmd.CommandText = "delete from blog where username = @username and applicationname = @appname and title=@title";
|
|
cmd.Parameters.AddWithValue ("@username",username);
|
|
cmd.Parameters.AddWithValue ("@appname", applicationName);
|
|
cmd.Parameters.AddWithValue ("@title",title);
|
|
cnx.Open ();
|
|
cmd.ExecuteNonQuery ();
|
|
cnx.Close();
|
|
}
|
|
}
|
|
|
|
|
|
int defaultPageSize = 10;
|
|
/// <summary>
|
|
/// Lasts the posts.
|
|
/// </summary>
|
|
/// <returns>The posts.</returns>
|
|
/// <param name="pageIndex">Page index.</param>
|
|
/// <param name="pageSize">Page size.</param>
|
|
/// <param name="totalRecords">Total records.</param>
|
|
public override BlogEntryCollection LastPosts(int pageIndex, int pageSize, out int totalRecords)
|
|
{
|
|
BlogEntryCollection c = new BlogEntryCollection ();
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
|
|
/*cmd.CommandText = "select blog.* from blog, " +
|
|
"(select max(posted) lpost, username " +
|
|
"from blog where applicationname = @appname " +
|
|
"group by username) as lblog " +
|
|
"where blog.posted = lblog.lpost and blog.username = lblog.username " ;
|
|
*/
|
|
cmd.CommandText = "select * " +
|
|
"from blog where applicationname = :appname and visible = true " +
|
|
" order by posted desc limit :len" ;
|
|
|
|
cmd.Parameters.AddWithValue ("appname", applicationName);
|
|
cmd.Parameters.AddWithValue ("len", defaultPageSize*10);
|
|
cnx.Open ();
|
|
using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
|
|
totalRecords = 0;
|
|
int firstrec = pageIndex * pageSize;
|
|
int lastrec = firstrec + pageSize - 1;
|
|
while (rdr.Read()) {
|
|
if (totalRecords >= firstrec && totalRecords <= lastrec) {
|
|
BlogEntry be = new BlogEntry ();
|
|
be.Id = rdr.GetInt64 (rdr.GetOrdinal ("_id"));
|
|
be.Title = rdr.GetString (rdr.GetOrdinal ("title"));
|
|
be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.Author = rdr.GetString (rdr.GetOrdinal ("username"));
|
|
be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
|
|
be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
|
|
be.Visible = true; // because of sql code used
|
|
c.Add (be);
|
|
}
|
|
totalRecords++;
|
|
}
|
|
}
|
|
}
|
|
foreach (BlogEntry be in c)
|
|
SetCirclesOn (be);
|
|
return c;
|
|
}
|
|
#endregion
|
|
}
|
|
}
|