internal static void Proxy(object instance)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
var type = instance.GetType();
if (EntityUtil.IsPagingResult(type))
{
var ta = TypeAccessor.GetAccessor(type);
IEnumerable items = (IEnumerable)ta.GetProperty("Items", instance);
foreach (var item in items)
{
Proxy(item);
}
}
else if (EntityUtil.IsGenericList(type))
{
IEnumerable items = (IEnumerable)instance;
foreach (var item in items)
{
Proxy(item);
}
}
else if (RepositoryFramework.GetDefineMetadata(type) != null)
{
ProxyJoins(instance);
}
}
static void Fetch(object entity, Func <object, bool> cancelFetchFunc)
{
if (entity == null)
{
return;
}
var type = entity.GetType();
var metadata = RepositoryFramework.GetDefineMetadata(type);
if (metadata != null)
{
if (metadata.FetchableObject != null)
{
(metadata.FetchableObject).Fetch(entity);
}
var joins = metadata.ClassJoinDefines.Values.Cast <ClassJoinDefineMetadata>().Where(o => o.JoinType == MethodJoinType.PropertyGet);
var ta = TypeAccessor.GetAccessor(metadata.EntityType);
foreach (var join in joins)
{
var value = ta.GetProperty(join.JoinName, entity);
if (cancelFetchFunc != null && cancelFetchFunc(value))
{
return;
}
var entityType = join.Method.ReturnType;
if (EntityUtil.IsGenericList(entityType))
{
var items = (IList)value;
for (var i = 0; i < items.Count; i++)
{
var v = items[i];
var sv = GetSource(v);
Fetch(sv, cancelFetchFunc);
if (sv != v)
{
items[i] = sv;
}
}
}
else
{
var sv = GetSource(value);
Fetch(sv, cancelFetchFunc);
if (value != sv)
{
ta.SetProperty(join.JoinName, entity, sv);
}
}
}
}
}
internal static void ProxyJoins(object entity)
{
ClassDefineMetadata metadata = RepositoryFramework.GetDefineMetadataAndCheck(entity.GetType());
var joins = metadata.ClassJoinDefines.Values.Cast <ClassJoinDefineMetadata>().Where(o => o.JoinType == MethodJoinType.PropertyGet);
var ta = TypeAccessor.GetAccessor(metadata.EntityType);
foreach (var join in joins)
{
var value = ta.GetProperty(join.JoinName, entity);
//已经为代理对象，直接忽略
if (IsProxy(value))
{
((IProxy)value).Reset();
continue;
}
var type = join.Method.ReturnType;
if (EntityUtil.IsGenericList(type))
{
var itemType = type.GetGenericArguments()[0];
var proxyType = typeof(ProxyCollection <>).MakeGenericType(itemType);
IProxyCollection proxy = (IProxyCollection)FastActivator.Create(proxyType);
proxy.Init(entity, join);
ta.SetProperty(join.JoinName, entity, proxy);
}
else
{
var ei = new EntityProxyInterceptor(entity, join);
var proxy = ProxyProvider.GetCreateFunc(type)(new IInterceptor[] { ei });
ei.IsConstructed = true;
ta.SetProperty(join.JoinName, entity, proxy);
}
}
}