设计模式：如何在网关内编辑多个实体

Question

We are now in a situation on a project that we need manipulate multiple user entities at once. By example we will disable 50 users at once. Normally we did that in a gateway

Gateway

• Query the data at once by the gateway with a query

OR

• Loop through multiple users
  • Load entity
  • Manipulate data
  • validate
  • save()

But that is not the best practice solution.

The first option overrule the possibility to validate the data. The second is not good performing, because we need iterate the entity for all users

What do you suggest? We want a fast solution, but also a save solution

Hope someone know the right solution. Thanks!

When we use the

Answer 1

You need an Object Realational Mapper (ORM) that has the feature to load those multiple users that match the loop at once so the load is reduced.

Similar for the save operation at the end. All changed entities should be stored at once with a unit of work.

Check the product documentation of the ORM you're using or contact it's vendor to find out which features it offers to support your development.