private LiteDataTable DataPortalFetchTable(IEQC ieqc)
{
ieqc.FetchType = FetchType.Table;
this.OnFetching(ieqc);
return(DataPortalApi.Fetch(this.GetType(), ieqc, this.DataPortalLocation) as LiteDataTable);
}
private EntityList DataPortalFetchList(IEQC ieqc)
{
this.OnFetching(ieqc);
var list = DataPortalApi.Fetch(this.GetType(), ieqc, this.DataPortalLocation) as EntityList;
this.NotifyLoaded(list);
return(list);
}
public void Intercept(IInvocation invocation)
{
#region 预处理，根据返回值的类型来判断 FetchType。
//if (Attribute.IsDefined(invocation.TargetType, typeof(IgnoreProxyAttribute))
// || Attribute.IsDefined(invocation.Method, typeof(IgnoreProxyAttribute)))
//{
// invocation.Proceed();
// return;
//}
var fetchType = RepositoryQueryType.List;
var returnType = invocation.Method.ReturnType;
if (returnType.IsClass)
{
if (typeof(EntityList).IsAssignableFrom(returnType))
{
fetchType = RepositoryQueryType.List;
}
else if (typeof(Entity).IsAssignableFrom(returnType))
{
fetchType = RepositoryQueryType.First;
}
else if (returnType == typeof(LiteDataTable))
{
fetchType = RepositoryQueryType.Table;
}
else
{
throw new NotSupportedException("仓库查询不支持返回 {0} 类型。".FormatArgs(returnType));
}
}
else
{
fetchType = RepositoryQueryType.Count;
}
#endregion
var ieqc = new IEQC
{
MethodName = invocation.Method.Name,
Parameters = invocation.Arguments,
QueryType = fetchType
};
var repoExt = invocation.InvocationTarget as IRepositoryExt;
var repo = invocation.InvocationTarget as EntityRepository ?? repoExt.Repository as EntityRepository;
//只是不要纯客户端，都直接使用本地访问
if (repo.DataPortalLocation == DataPortalLocation.Local || RafyEnvironment.Location.ConnectDataDirectly)
{
using (FinalDataPortal.CurrentQueryCriteriaItem.UseScopeValue(ieqc))
{
try
{
RafyEnvironment.ThreadPortalCount++;
if (repoExt != null)
{
//invoke repositoryExt
invocation.Proceed();
}
else
{
//先尝试在 DataProvider 中调用指定的方法，如果没有找到，才会调用 Repository 中的方法。
//这样可以使得 DataProvider 中定义同名方法即可直接重写仓库中的方法。
object result = null;
if (MethodCaller.CallMethodIfImplemented(
repo.DataProvider, invocation.Method.Name, invocation.Arguments, out result
))
{
invocation.ReturnValue = result;
}
else
{
//invoke repository
invocation.Proceed();
}
}
}
finally
{
RafyEnvironment.ThreadPortalCount--;
}
}
}
else
{
//调用数据门户，使得在服务端才执行真正的数据层方法。
invocation.ReturnValue = DataPortalApi.Fetch(invocation.TargetType, ieqc, repo.DataPortalLocation);
}
#region Repository.NotifyLoaded
switch (fetchType)
{
case RepositoryQueryType.List:
var list = invocation.ReturnValue as EntityList;
repo.NotifyLoaded(list);
break;
case RepositoryQueryType.First:
var entity = invocation.ReturnValue as Entity;
repo.NotifyLoaded(entity);
break;
case RepositoryQueryType.Count:
case RepositoryQueryType.Table:
default:
break;
}
#endregion
}
