SqlDependency オブジェクトに通知を送信しようとしていますが、これまでのところ動作させることができません。
私が送信しているSQLクエリは次のとおりです。
SELECT [SocialMedia].[dbo].[Items].[Id]
FROM [SocialMedia].[dbo].[Items]
私は、完全修飾名を持ち、変数名のみを持ち、その間のすべてを持ち、中かっこの有無にかかわらずそれを試しました。
Id は、 Creating a Query for Notification の記事Guid
で、それらが SqlDependency オブジェクトで機能しないという言及を見なかったタイプです。
また、複数の列を送信して、それが機能するかどうかを確認しました。
SELECT SocialMedia.dbo.Items.Id,
SocialMedia.dbo.Items.DateTimeCreated,
SocialMedia.dbo.Items.AuthorId
FROM SocialMedia.dbo.Items
そして、それもうまくいきませんでした。
これが私のテーブルSQLです:
USE [SocialMedia]
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
SET ANSI_PADDING ON
CREATE TABLE [dbo].[Items](
[Id] [uniqueidentifier] NOT NULL,
[DateTimeCreated] [datetimeoffset](7) NOT NULL,
[AuthorId] [uniqueidentifier] NOT NULL,
[Source] [varchar](max) NOT NULL,
[PlaceId] [uniqueidentifier] NULL,
[FullText] [varchar](max) NOT NULL,
[Geography] [geography] NULL,
[DateTimeAdded] [datetime] NULL,
CONSTRAINT [PK_Items] PRIMARY KEY CLUSTERED ( [Id] ASC )
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF,
IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON,
ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE [dbo].[Items] WITH CHECK ADD CONSTRAINT [FK_Items_Places]
FOREIGN KEY([PlaceId]) REFERENCES [dbo].[Places] ([Id])
ALTER TABLE [dbo].[Items] CHECK CONSTRAINT [FK_Items_Places]
GO
ALTER TABLE [dbo].[Items] WITH CHECK ADD CONSTRAINT [FK_Items_Users]
FOREIGN KEY([AuthorId]) REFERENCES [dbo].[Users] ([Id])
ALTER TABLE [dbo].[Items] CHECK CONSTRAINT [FK_Items_Users]
そして私のDB:
USE [master]
GO
CREATE DATABASE [SocialMedia]
CONTAINMENT = NONE
ON PRIMARY
( NAME = N'SocialMedia',
FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL11.DENALI\MSSQL\DATA\SocialMedia.mdf' ,
SIZE = 1110016KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
LOG ON
( NAME = N'SocialMedia_log',
FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL11.DENALI\MSSQL\DATA\SocialMedia_log.ldf' ,
SIZE = 123648KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO
ALTER DATABASE [SocialMedia] SET COMPATIBILITY_LEVEL = 110
GO
IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled')) BEGIN
EXEC [SocialMedia].[dbo].[sp_fulltext_database] @action = 'enable'
END
GO
ALTER DATABASE [SocialMedia] SET ANSI_NULL_DEFAULT OFF
ALTER DATABASE [SocialMedia] SET ANSI_NULLS ON
ALTER DATABASE [SocialMedia] SET ANSI_PADDING ON
ALTER DATABASE [SocialMedia] SET ANSI_WARNINGS ON
ALTER DATABASE [SocialMedia] SET ARITHABORT ON
ALTER DATABASE [SocialMedia] SET AUTO_CLOSE OFF
ALTER DATABASE [SocialMedia] SET AUTO_CREATE_STATISTICS ON
ALTER DATABASE [SocialMedia] SET AUTO_SHRINK OFF
ALTER DATABASE [SocialMedia] SET AUTO_UPDATE_STATISTICS ON
ALTER DATABASE [SocialMedia] SET CURSOR_CLOSE_ON_COMMIT OFF
ALTER DATABASE [SocialMedia] SET CURSOR_DEFAULT GLOBAL
ALTER DATABASE [SocialMedia] SET CONCAT_NULL_YIELDS_NULL ON
ALTER DATABASE [SocialMedia] SET NUMERIC_ROUNDABORT OFF
ALTER DATABASE [SocialMedia] SET QUOTED_IDENTIFIER ON
ALTER DATABASE [SocialMedia] SET RECURSIVE_TRIGGERS OFF
ALTER DATABASE [SocialMedia] SET ENABLE_BROKER
ALTER DATABASE [SocialMedia] SET AUTO_UPDATE_STATISTICS_ASYNC OFF
ALTER DATABASE [SocialMedia] SET DATE_CORRELATION_OPTIMIZATION OFF
ALTER DATABASE [SocialMedia] SET TRUSTWORTHY OFF
ALTER DATABASE [SocialMedia] SET ALLOW_SNAPSHOT_ISOLATION OFF
ALTER DATABASE [SocialMedia] SET PARAMETERIZATION SIMPLE
ALTER DATABASE [SocialMedia] SET READ_COMMITTED_SNAPSHOT OFF
ALTER DATABASE [SocialMedia] SET HONOR_BROKER_PRIORITY OFF
ALTER DATABASE [SocialMedia] SET RECOVERY FULL
ALTER DATABASE [SocialMedia] SET MULTI_USER
ALTER DATABASE [SocialMedia] SET PAGE_VERIFY CHECKSUM
ALTER DATABASE [SocialMedia] SET DB_CHAINING OFF
ALTER DATABASE [SocialMedia] SET FILESTREAM( NON_TRANSACTED_ACCESS = OFF )
ALTER DATABASE [SocialMedia] SET TARGET_RECOVERY_TIME = 0 SECONDS
ALTER DATABASE [SocialMedia] SET READ_WRITE
そして、私がそれを実行するために使用しているコード:
string connString = ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString;
conn = new SqlConnection(connString);
conn.Open(); // open new connection and create command to notify about all new Chat-Messages in -ROOM_NUMBER- const
using (var sqlCommand = new SqlCommand(GetSearchQueryString(searchItems), conn))
{
var sqlDependency = new SqlDependency(sqlCommand
//handle onChange event - this will be fired whenever there is a change in database that affacts our query
sqlDependency.OnChange += (sender, e) =>
{
//change detected - get all messages...
try
{
var sql = GetSearchQueryString(searchItems);
int count = _entities.ExecuteStoreQuery<Guid>(sql).Count();
AsyncManager.Parameters["count"] = count;
}
finally
{
AsyncManager.OutstandingOperations.Decrement();
}
};
sqlCommand.ExecuteNonQuery();
}
SqlDependency.Start(ConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString);
プログラムの早い段階で呼び出しています。
何か不足していますか?明らかな何かが欠けているように感じます...