我不确定这是不是最好的方法,但我通过使用 Reflector 对 Microsoft.Office.Server.Search.Connector.BDC.BdcSecurityTrimmer 进行逆向工程来实现这一点。我只需要标识值,以便稍微简化一下。
下面是我的代码,它采用提供给安全修剪器的 documentCrawlUrls 数组,并将它们转换为我的 BDC 模型文件中定义的主键数组。一旦有了这些,我就可以使用更多自定义的 .NET 代码来确定安全性修整。
在我的安全修剪器(ISecurityTrimmer2)的 CheckAccess() 中,我有:
String[] ids = GetIds(documentCrawlUrls);
然后我有以下私有方法:
private string[] GetIds(IList<string> documentCrawlUrls)
{
string[] ids = new String[documentCrawlUrls.Count];
for (int i = 0; i < documentCrawlUrls.Count; i++)
{
try
{
string url = documentCrawlUrls[i];
Identity identity = null;
IEntity entity = null;
ILobSystemInstance lsi = null;
ParseUri(url, out entity, out identity, out lsi);
if (identity != null)
{
object[] values = identity.GetIdentifierValues();
if (values.Length > 0)
{
ids[i] = values[0].ToString();
}
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine("Error: " + ex.Message);
}
}
return ids;
}
我不想重写 SPBdcUri 类,它是内部的,所以我用反射作弊。我目前只使用其中一个 out 参数,因此可以提高效率。我可能会重写我需要的 SPBdcUri 部分,而不是诉诸反射。
private void ParseUri(string crawlUri, out IEntity entity, out Identity identity, out ILobSystemInstance lsi)
{
//SPBdcUri uri = new SPBdcUri(new Uri(crawlUri));
AssemblyName assemblyName = new AssemblyName("Microsoft.Office.Server.Search.Connector, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c");
Assembly assembly = Assembly.Load(assemblyName);
Type spBdcUriType = assembly.GetType("Microsoft.Office.Server.Search.Connector.BDC.SPBDC.SPBdcUri");
object uri = Activator.CreateInstance(spBdcUriType,
BindingFlags.NonPublic | BindingFlags.Instance,
null, new object[] { new Uri(crawlUri) }, System.Globalization.CultureInfo.CurrentCulture);
//uri.DoOverrideBDCThrottlingLimits = false;
spBdcUriType.InvokeMember("DoOverrideBDCThrottlingLimits",
BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetProperty,
null, uri, new object[] { false });
//entity = uri.Entity;
object entityObj = spBdcUriType.InvokeMember("Entity",
BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty,
null, uri, null);
entity = (IEntity)entityObj;
//identity = uri.Identity;
object identityObj = spBdcUriType.InvokeMember("Identity",
BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty,
null, uri, null);
identity = (Identity)identityObj;
//lsi = uri.LobSystemInstance;
object lsiObj = spBdcUriType.InvokeMember("LobSystemInstance",
BindingFlags.Public | BindingFlags.Instance | BindingFlags.GetProperty,
null, uri, null);
lsi = (ILobSystemInstance)lsiObj;
}
哦,这是我的“使用”语句:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using Microsoft.BusinessData.MetadataModel.Collections;
using Microsoft.BusinessData.MetadataModel;
using Microsoft.BusinessData.Runtime;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;
using Microsoft.SharePoint.BusinessData.SharedService;
using Microsoft.Office.Server.Search.Query;