public void ProcessRequest(HttpContext context)
{
HistoryAdapter adapter = new HistoryAdapter();
string id = context.Request.QueryString["id"];
if (string.IsNullOrEmpty(id))
{
throw new HttpException("必须提供有效的ID参数");
}
TimePointContext timeContext = TimePointContext.GetCurrentState();
TimePointContext.Current.UseCurrentTime = true;
SchemaObjectBase obj;
try
{
obj = SchemaObjectAdapter.Instance.Load(id);
}
finally
{
TimePointContext.RestoreCurrentState(timeContext);
}
if (obj == null)
{
throw new ObjectNotFoundException("不存在id为" + id + "的对象");
}
context.Response.ContentType = "text/xml";
context.Response.CacheControl = "no-cache";
using (System.IO.Stream output = context.Response.OutputStream)
{
System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(output);
writer.WriteStartElement("data");
this.WriteObjectHistory(adapter.GetObjectHistoryEntries(id), writer, id);
this.WriteReferenceHistory(adapter.GetReferenceHistoryEntries(id), writer, id);
this.WriteMembershipHistory(adapter.GetMembershipHistoryEntries(id), writer, id);
writer.WriteEndElement();
writer.Close();
}
}
