同步的SQL Server 2008数据库通过HTTP使用WCF和放大器;同步框架

问题描述

有没有人在这里工作，具有同步框架，并通过WCF终端同步？请分享code样品或样本项目。我专门找下线场景中的客户端上线才从服务器获取更新。

Has anyone here worked with Sync Framework and syncing through WCF endpoints? Please share code samples or sample projects. I am specifically looking for offline scenarios where client comes online only to fetch updates from the Server.

推荐答案

我做了以下获得使用WCF与SQL Server同步框架工作2008

I did the following to get Sync Framework working using WCF with SQL Server 2008

• 在SQL Server中启用更改跟踪2008
• 已启用更改跟踪参与同步的表
• 添加元数据表命名锚
• 添加了一个表来跟踪客户端ID命名为GUID
• 二手SqlEx pressClientSyncProvider可根据无国界医生codePLEX项目现场为客户端同步提供

• 用于SqlSyncAdapterBuilder建立适配器参与同步的表

• Enabled Change Tracking in SQL Server 2008
• Enabled change tracking for tables participating in the Sync
• Added a metadata table named anchor
• Added a table to track client Ids named "guid"
• Used SqlExpressClientSyncProvider available from MSF's codeplex project site as Client Sync Provider

• Used SqlSyncAdapterBuilder to build adapters for tables participating in the Sync

foreach (var item in anchorTables)
{
    // Use adapter builder to generate T-SQL for querying change tracking data and CRUD
    SqlSyncAdapterBuilder builder = new SqlSyncAdapterBuilder();
    builder.Connection = new SqlConnection(this.connectionStringFactory.ConnectionString);
    builder.ChangeTrackingType = ChangeTrackingType.SqlServerChangeTracking;
    builder.SyncDirection = SyncDirection.Bidirectional;
    builder.TableName = item.TableName;
    // Get sync adapters from builder
    SyncAdapter clientAdapter = builder.ToSyncAdapter();
    clientAdapter.TableName = item.TableName;
    this.clientSyncProvider.SyncAdapters.Add(clientAdapter);
}

添加锚点命令

Added anchor commands

SqlCommand anchroCommand =
   new SqlCommand { CommandText = "SELECT @" 
      + SyncSession.SyncNewReceivedAnchor 
      + " = change_tracking_current_version()" };

anchroCommand.Parameters.Add("@" 
      + SyncSession.SyncNewReceivedAnchor, SqlDbType.BigInt)
      .Direction = ParameterDirection.Output;

this.clientSyncProvider.SelectNewAnchorCommand = anchroCommand;

使用DbServerSyncProvider充当服务器同步提供程序的情况下实现WCF服务。您将有产生同步适配器，并设置锚命令，如图中的服务器供应商也previous一步。

Implemented a WCF Service using a instance of DbServerSyncProvider functioning as Server sync provider. You will have generate sync adapters and set anchor command as shown in previous step for Server provider too.

[ServiceContract]
public interface ISyncService
{
    [OperationContract]
    SyncContext ApplyChanges(SyncGroupMetadata groupMetadata, DataSet dataSet, SyncSession syncSession);
    [OperationContract]
    SyncContext GetChanges(SyncGroupMetadata groupMetadata, SyncSession syncSession);
    [OperationContract]
    SyncSchema GetSchema(Collection<string> tableNames, SyncSession syncSession);
    [OperationContract]
    SyncServerInfo GetServerInfo(SyncSession syncSession);
}

创建一个代理类实现ServerSyncProvider访问WCF服务

Created a proxy class implementing ServerSyncProvider to access WCF service

public class DbServerSyncProviderProxy : ServerSyncProvider
{
    SyncServiceProxy.SyncServiceClient serviceProxy = new SyncServiceProxy.SyncServiceClient();
    public override SyncContext ApplyChanges(SyncGroupMetadata groupMetadata, DataSet dataSet, SyncSession syncSession)
    {
        return serviceProxy.ApplyChanges(groupMetadata, dataSet, syncSession);
    }
}

创建SyncAgent的一个实例，并设置RemoteProvider与代理类是用于访问WCF服务的实例。 LocalProvider设置与SqlEx pressClientSyncProvider实例

添加表和同步组SyncAgent配置

SyncAgent.Synchronize（）

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