/// <summary>
/// 把整个聚合对象的 Id 设置完整。
/// </summary>
/// <param name="oldEntity"></param>
/// <param name="newEntity"></param>
private static void MergeIdRecur(Entity oldEntity, Entity newEntity)
{
oldEntity.LoadProperty(Entity.IdProperty, newEntity.GetProperty(Entity.IdProperty));
foreach (var field in oldEntity.GetLoadedChildren())
{
var listProperty = field.Property as IListProperty;
if (listProperty != null)
{
var oldChildren = field.Value as EntityList;
var newChildren = newEntity.GetLazyList(listProperty) as EntityList;
//两个集合应该是一样的数据、顺序？如果后期出现 bug，则修改此处的逻辑为查找到对应项再修改。
for (int i = 0, c = oldChildren.Count; i < c; i++)
{
MergeIdRecur(oldChildren[i], newChildren[i]);
}
//同步组合父对象 Id
oldChildren.SyncParentEntityId(oldEntity);
//同步 TreePId
if (oldChildren.SupportTree)
{
for (int i = 0, c = oldChildren.Count; i < c; i++)
{
var oldChild = oldChildren[i];
var newChild = newChildren[i];
oldChild.TreePId = newChild.TreePId;
}
}
}
}
}
/// <summary>
/// 迭归检测一个组合实体中是否有新添加的实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
private static bool HasNewEntity(Entity entity)
{
if (entity.IsNew)
{
return(true);
}
var enumerator = entity.GetLoadedChildren();
while (enumerator.MoveNext())
{
var field = enumerator.Current.Value;
var list = field as EntityList;
if (list != null)
{
foreach (var child in list)
{
if (HasNewEntity(child))
{
return(true);
}
}
}
else
{
var child = field as Entity;
if (HasNewEntity(child))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// 提交更新指定实体的组合子列表。
/// </summary>
protected virtual void SubmitChildren(Entity entity)
{
var enumerator = entity.GetLoadedChildren();
while (enumerator.MoveNext())
{
var child = enumerator.Current.Value;
SaveRecur(child, entity);
}
}
/// <summary>
/// 提交更新指定实体的组合子列表。
/// </summary>
protected virtual void SubmitChildren(Entity entity)
{
var enumerator = entity.GetLoadedChildren();
while (enumerator.MoveNext())
{
var child = enumerator.Current.Value;
//使用组合子自己的仓库来进行提交。
var repo = child.GetRepository() as EntityRepository;
var repoData = repo.RdbDataProvider;
repoData.SubmitChildrenComponent(child, entity);
}
}
/// <summary>
/// 删除所有组合子。
///
/// 子类重写此方法来实现新的删除逻辑。
/// 注意，此方法只会在指定了 <see cref="EnableDeletingChildrenInMemory"/> 时，才会调用。
/// </summary>
protected virtual void DeleteChildren(Entity entity)
{
_repository.LoadAllChildren(entity);
foreach (var childField in entity.GetLoadedChildren())
{
var children = childField.Value as EntityList;
if (children != null && children.Count > 0)
{
//删除所有子。
children.Clear();
SaveRecur(children, entity);
}
}
}
/// <summary>
/// 迭归检测一个组合实体中是否有新添加的实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
private static bool HasNewEntity(Entity entity)
{
if (entity.IsNew) return true;
var enumerator = entity.GetLoadedChildren();
while (enumerator.MoveNext())
{
var field = enumerator.Current.Value;
var list = field as EntityList;
if (list != null)
{
foreach (var child in list)
{
if (HasNewEntity(child)) return true;
}
}
else
{
var child = field as Entity;
if (HasNewEntity(child)) return true;
}
}
return false;
}
/// <summary>
/// 提交更新指定实体的组合子列表。
/// </summary>
protected virtual void SubmitChildren(Entity entity)
{
var enumerator = entity.GetLoadedChildren();
while (enumerator.MoveNext())
{
var child = enumerator.Current.Value;
SaveRecur(child, entity);
}
}