/// <summary>
/// 处理关联的实体集合。
/// </summary>
/// <param name="queryable"></param>
/// <param name="entity"></param>
/// <param name="entitySet"></param>
/// <param name="property"></param>
private void HandleRelationEntitySet(IQueryable queryable, IEntity entity, IEntitySet entitySet, IProperty property)
{
var added = entitySet.GetAttachedList();
var modified = entitySet.GetModifiedList();
var deleted = entitySet.GetDetachedList();
//处理删除的
if (deleted.Count() > 0)
{
queryable.BatchOperate(deleted, queryable.CreateDeleteExpression(true));
}
//处理修改的
if (modified.Count() > 0)
{
if (entitySet.AllowBatchUpdate)
{
queryable.BatchOperate(modified, queryable.CreateUpdateExpression());
}
else
{
foreach (var e in modified)
{
queryable.UpdateEntity(e);
e.SetState(EntityState.Unchanged);
HandleRelationProperties(e);
}
}
}
//处理新增的
if (added.Count() > 0)
{
var relation = RelationshipUnity.GetRelationship(property);
added.ForEach(e =>
{
foreach (var key in relation.Keys)
{
var value = entity.GetValue(key.ThisProperty);
e.SetValue(key.OtherProperty, value);
}
});
if (entitySet.AllowBatchInsert)
{
queryable.BatchOperate(added, queryable.CreateInsertExpression());
}
else
{
foreach (var e in added)
{
queryable.CreateEntity(e);
e.SetState(EntityState.Unchanged);
HandleRelationProperties(e);
}
}
}
entitySet.Reset();
}
private static void FillDataTableRows(DataTable table, IEntitySet extendList, IList <IProperty> properties, bool hasPrmKey)
{
FillDataTableRows(table, extendList.GetAttachedList(), properties, hasPrmKey, EntityState.Attached);
FillDataTableRows(table, extendList.GetModifiedList(), properties, hasPrmKey, EntityState.Modified);
FillDataTableRows(table, extendList.GetDetachedList(), properties, hasPrmKey, EntityState.Detached);
extendList.Reset();
}
/// <summary>
/// 处理关联的实体集合。
/// </summary>
/// <param name="queryable"></param>
/// <param name="entity"></param>
/// <param name="entitySet"></param>
/// <param name="property"></param>
private async Task HandleEntitySetPropertyAsync(IQueryable queryable, IEntity entity, IEntitySet entitySet, IProperty property, CancellationToken cancellationToken = default)
{
var added = entitySet.GetAttachedList();
var modified = entitySet.GetModifiedList();
var deleted = entitySet.GetDetachedList();
//处理删除的
if (deleted.Count() > 0)
{
await queryable.BatchOperateAsync(deleted, queryable.CreateDeleteExpression(true), cancellationToken);
}
//处理修改的
if (modified.Count() > 0)
{
if (entitySet.AllowBatchUpdate)
{
await queryable.BatchOperateAsync(modified, queryable.CreateUpdateExpression(), cancellationToken);
}
else
{
foreach (var e in modified)
{
await queryable.UpdateEntityAsync(e, cancellationToken);
e.SetState(EntityState.Unchanged);
await HandleRelationPropertiesAsync(e, cancellationToken);
}
}
}
//处理新增的
if (added.Count() > 0)
{
var relation = RelationshipUnity.GetRelationship(property);
added.ForEach(e =>
{
foreach (var key in relation.Keys)
{
var value = entity.GetValue(key.ThisProperty);
e.SetValue(key.OtherProperty, value);
}
});
if (entitySet.AllowBatchInsert)
{
await queryable.BatchOperateAsync(added, queryable.CreateInsertExpression(), cancellationToken);
}
else
{
foreach (var e in added)
{
await queryable.CreateEntityAsync(e, cancellationToken);
e.SetState(EntityState.Unchanged);
await HandleRelationPropertiesAsync(e, cancellationToken);
}
}
}
entitySet.Reset();
}