341 lines
12 KiB
C#
341 lines
12 KiB
C#
using System;
|
|
using System.Configuration;
|
|
using System.Configuration.Provider;
|
|
using Npgsql;
|
|
using System.Collections.Generic;
|
|
using yavscModel.Blogs;
|
|
|
|
namespace Npgsql.Web.Blog
|
|
{
|
|
public class NpgsqlBlogProvider : BlogProvider
|
|
{
|
|
string applicationName;
|
|
string connectionString;
|
|
|
|
#region implemented abstract members of BlogProvider
|
|
|
|
public override long GetPostId (string username, string title)
|
|
{
|
|
throw new NotImplementedException ();
|
|
}
|
|
public override Comment[] GetComments (long postid, bool getHidden)
|
|
{
|
|
List<Comment> cmts = new List<Comment> ();
|
|
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
|
|
cmd.CommandText = "select _id, username, bcontent, modified, posted, visible from comment " +
|
|
"where applicationname = @appname and postid = @id" +
|
|
((getHidden) ? " and visible = true ":" ") +
|
|
"order by posted asc" ;
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cmd.Parameters.Add ("@id", postid);
|
|
cnx.Open ();
|
|
using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
|
|
while (rdr.Read ()) {
|
|
Comment c = new Comment();
|
|
c.CommentText = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
c.From = rdr.GetString (rdr.GetOrdinal ("username"));
|
|
c.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
|
|
c.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
|
|
c.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
|
|
c.PostId = postid;
|
|
c.Id = rdr.GetInt64(rdr.GetOrdinal("_id"));
|
|
cmts.Add (c);
|
|
}
|
|
}
|
|
}
|
|
return cmts.ToArray();
|
|
}
|
|
public override void UpdatePost (long postid, string content, bool visible)
|
|
{
|
|
using (NpgsqlConnection cnx = new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
DateTime now = DateTime.Now;
|
|
cmd.CommandText =
|
|
"update blog set modified=@now, bcontent=@content, " +
|
|
"visible = @visible where _id = @id";
|
|
cmd.Parameters.Add ("@now", now);
|
|
cmd.Parameters.Add ("@content", content);
|
|
cmd.Parameters.Add ("@visible", visible);
|
|
cmd.Parameters.Add ("@id", postid);
|
|
cnx.Open ();
|
|
cmd.ExecuteNonQuery ();
|
|
cnx.Close();
|
|
}
|
|
}
|
|
|
|
public override void RemovePost (long postid)
|
|
{
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
public override long Comment (string from, long postid, string content)
|
|
{
|
|
if (from == null)
|
|
throw new ArgumentNullException("from");
|
|
if (content == null)
|
|
throw new ArgumentNullException("content");
|
|
bool visible = AutoValidateComment;
|
|
using (NpgsqlConnection cnx=
|
|
new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
cmd.CommandText = "insert into comment (postid,bcontent," +
|
|
"modified,posted,visible,username,applicationname)" +
|
|
"values (@postid,@bcontent,@modified,@posted," +
|
|
"@visible,@username,@appname) returning _id";
|
|
cmd.Parameters.Add ("@postid", postid);
|
|
cmd.Parameters.Add ("@bcontent", content);
|
|
DateTime now = DateTime.Now;
|
|
cmd.Parameters.Add ("@modified", now);
|
|
cmd.Parameters.Add ("@posted", now);
|
|
cmd.Parameters.Add ("@visible", visible);
|
|
cmd.Parameters.Add ("@username", from);
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cnx.Open ();
|
|
return (long) cmd.ExecuteScalar();
|
|
}
|
|
}
|
|
|
|
public override void ValidateComment (long cmtid)
|
|
{
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
public override void UpdateComment
|
|
(long cmtid, string content, bool visible)
|
|
{
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
private bool autoValidateComment = true;
|
|
|
|
public override bool AutoValidateComment {
|
|
get {
|
|
return autoValidateComment;
|
|
}
|
|
set {
|
|
autoValidateComment=value;
|
|
}
|
|
}
|
|
|
|
|
|
public override string BlogTitle
|
|
(string username)
|
|
{
|
|
throw new NotImplementedException ();
|
|
}
|
|
|
|
#endregion
|
|
|
|
public override void Initialize
|
|
(string name, System.Collections.Specialized.NameValueCollection config)
|
|
{
|
|
string cnxName = config ["connectionStringName"];
|
|
connectionString = ConfigurationManager.ConnectionStrings [cnxName].ConnectionString;
|
|
config.Remove ("connectionStringName");
|
|
applicationName = config ["applicationName"];
|
|
config.Remove ("applicationName");
|
|
defaultPageSize = int.Parse ( config ["pageLen"] ?? "10") ;
|
|
base.Initialize (name, config);
|
|
}
|
|
#region implemented abstract members of BlogProvider
|
|
public override BlogEntry GetPost (long postid)
|
|
{
|
|
BlogEntry be = null;
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
cmd.CommandText = "select username, title, bcontent, modified, posted, visible from blog " +
|
|
"where applicationname = @appname and _id = @id";
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cmd.Parameters.Add ("@id", postid);
|
|
cnx.Open ();
|
|
using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
|
|
if (rdr.Read ()) {
|
|
be = new BlogEntry ();
|
|
be.Title = rdr.GetString (rdr.GetOrdinal ("title"));
|
|
be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.UserName = rdr.GetString (rdr.GetOrdinal ("username"));
|
|
be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
|
|
be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
|
|
be.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
|
|
be.Id = postid;
|
|
}
|
|
}
|
|
}
|
|
return be;
|
|
}
|
|
public override long RemoveComment (long cmtid)
|
|
{
|
|
long postid = 0;
|
|
using (NpgsqlConnection cnx = new NpgsqlConnection (connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand ()) {
|
|
cmd.CommandText = "delete from comment where _id = @id returning postid";
|
|
cmd.Parameters.Add ("id", cmtid);
|
|
cnx.Open ();
|
|
postid = (long) cmd.ExecuteScalar ();
|
|
}
|
|
return postid;
|
|
}
|
|
public override BlogEntry GetPost (string username, string title)
|
|
{
|
|
BlogEntry be = null;
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
cmd.CommandText = "select _id,bcontent,modified,posted,visible from blog " +
|
|
"where applicationname = @appname and username = @username and title = @title";
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cmd.Parameters.Add ("@username", username);
|
|
cmd.Parameters.Add ("@title", title);
|
|
cnx.Open ();
|
|
using (NpgsqlDataReader rdr = cmd.ExecuteReader()) {
|
|
if (rdr.Read ()) {
|
|
be = new BlogEntry ();
|
|
be.Title = title;
|
|
be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.UserName = username;
|
|
be.Modified = rdr.GetDateTime (rdr.GetOrdinal ("modified"));
|
|
be.Posted = rdr.GetDateTime (rdr.GetOrdinal ("posted"));
|
|
be.Visible = rdr.GetBoolean (rdr.GetOrdinal ("visible"));
|
|
be.Id = rdr.GetInt64 (rdr.GetOrdinal ("_id"));
|
|
}
|
|
}
|
|
}
|
|
return be;
|
|
}
|
|
|
|
public override long Post (string username, string title, string content, bool visible)
|
|
{
|
|
if (username == null)
|
|
throw new ArgumentNullException("username");
|
|
if (title == null)
|
|
throw new ArgumentNullException("title");
|
|
if (content == null)
|
|
throw new ArgumentNullException("content");
|
|
using (NpgsqlConnection cnx=new NpgsqlConnection(connectionString))
|
|
using (NpgsqlCommand cmd = cnx.CreateCommand()) {
|
|
cmd.CommandText = "insert into blog (title,bcontent,modified,posted,visible,username,applicationname)" +
|
|
"values (@title,@bcontent,@modified,@posted,@visible,@username,@appname) returning _id";
|
|
cmd.Parameters.Add ("@title", title);
|
|
cmd.Parameters.Add ("@bcontent", content);
|
|
DateTime now = DateTime.Now;
|
|
cmd.Parameters.Add ("@modified", now);
|
|
cmd.Parameters.Add ("@posted", now);
|
|
cmd.Parameters.Add ("@visible", visible);
|
|
cmd.Parameters.Add ("@username", username);
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cnx.Open ();
|
|
return (long) cmd.ExecuteScalar();
|
|
}
|
|
}
|
|
|
|
public override BlogEntryCollection FindPost (string pattern, FindBlogEntryFlags searchflags, 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 title,bcontent,modified,posted,username,visible from blog " +
|
|
"where applicationname = @appname";
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
if ((searchflags & FindBlogEntryFlags.MatchContent) > 0) {
|
|
cmd.CommandText += " and bcontent like @bcontent";
|
|
cmd.Parameters.Add ("@bcontent", pattern);
|
|
}
|
|
if ((searchflags & FindBlogEntryFlags.MatchTitle) > 0) {
|
|
cmd.CommandText += " and title like @title";
|
|
cmd.Parameters.Add ("@title", pattern);
|
|
}
|
|
if ((searchflags & FindBlogEntryFlags.MatchUserName) > 0) {
|
|
cmd.CommandText += " and username like @username";
|
|
cmd.Parameters.Add ("@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()) {
|
|
totalRecords = 0;
|
|
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.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.UserName = 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++;
|
|
}
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
public override void RemovePost (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.Add ("@username",username);
|
|
cmd.Parameters.Add ("@appname", applicationName);
|
|
cmd.Parameters.Add ("@title",title);
|
|
cnx.Open ();
|
|
cmd.ExecuteNonQuery ();
|
|
cnx.Close();
|
|
}
|
|
}
|
|
|
|
|
|
int defaultPageSize = 10;
|
|
|
|
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.Add ("@appname", applicationName);
|
|
cmd.Parameters.Add ("@len", defaultPageSize);
|
|
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.Title = rdr.GetString (rdr.GetOrdinal ("title"));
|
|
be.Content = rdr.GetString (rdr.GetOrdinal ("bcontent"));
|
|
be.UserName = 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++;
|
|
}
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
#endregion
|
|
}
|
|
}
|