private static TreeEntityJson ConvertRecur(Entity entity, EntityViewMeta evm)
{
var jEntity = new TreeEntityJson();
EntityJsonConverter.EntityToJson(evm, entity, jEntity);
foreach (Entity child in entity.TreeChildren)
{
var c = ConvertRecur(child, evm);
jEntity.children.Add(c);
}
return(jEntity);
}
private static object ConvertOutputComponent(object value)
{
//服务的输出属性如果类型是一个实体或者实体列表，则需要进行格式转换。
if (value is IDomainComponent)
{
var model = (value as IDomainComponent).GetRepository().EntityType;
//TODO：这里可能存在问题：当一个非默认的视图请求这个服务得到一个默认视图的实体数据时，可能会因为列不一致而出现问题。
var defaultVM = UIModel.Views.CreateBaseView(model);
if (value is EntityList)
{
var listRes = new EntityJsonList {
model = model
};
EntityJsonConverter.EntityToJson(defaultVM, value as EntityList, listRes.entities);
listRes.total = listRes.entities.Count;
value = listRes;
}
else if (value is Entity)
{
var entityJson = new EntityJson();
EntityJsonConverter.EntityToJson(defaultVM, value as Entity, entityJson);
//在纯数据的基础上添加以下两个约定的属性：标记这是一个实体以及它在客户端的类型名称。
entityJson.SetProperty(Consts.isEntityProperty, BooleanBoxes.True);
entityJson.SetProperty(Consts.modelProperty, ClientEntities.GetClientName(model));
value = entityJson;
}
else
{
throw new NotSupportedException("只支持对实体、实体列表进行格式转换。");
}
}
return(value);
}
private JsonModel QueryEntityList(HttpRequest request, EntityViewMeta evm)
{
var repo = RF.Find(evm.EntityType);
var pagingInfo = ParsePagingInfo(request, repo);
var entities = QueryEntityListCore(request, repo, pagingInfo);
var list = new EntityJsonList {
model = evm.EntityType
};
if (repo.SupportTree)
{
var roots = entities;
foreach (var rootItem in roots)
{
var i = ConvertRecur(rootItem, evm);
i.expanded = true;
list.entities.Add(i);
}
list.total = (entities as ITreeComponent).CountNodes();
}
else
{
//如果此时，还需要进行统计，表示在数据层查询时，并没有对分页进行处理。这时，只能在内存中对实体进行分页。
if (pagingInfo.IsNeedCount)
{
entities = JumpToPageInMemory(repo, entities, pagingInfo);
}
EntityJsonConverter.EntityToJson(evm, entities, list.entities);
list.total = pagingInfo.TotalCount;
}
return(list);
#region //暂时不用
//var repo = RF.Create(evm.EntityType);
//EntityList entities = QueryEntityListCore(request, repo);
//if (repo.SupportTree)
//{
// entities.EnsureObjectRelations();
// var root = new RootTreeEntityJson();
// var roots = entities.FindRoots();
// foreach (var rootItem in roots)
// {
// var i = ConvertRecur(rootItem, evm);
// root.children.Add(i);
// }
// return root;
//}
//else
//{
// var page = request.GetQueryStringOrDefault("page", 1);
// var limit = request.GetQueryStringOrDefault("limit", 10);
// var pagerInfo = new PagerInfo(page, limit, true);
// entities = JumpToPage(repo, entities, pagerInfo);
// var list = new EntityJsonList
// {
// totalCount = pagerInfo.TotalCount,
// };
// EntityJsonConverter.EntityToJson(evm, entities, list.entities);
// return list;
//}
#endregion
}