Configure associations for each map operation about detached-mapper HOT 12 CLOSED

@cryo75 Hi, thanks for writing,
Yes, this is the next thing I'm going to work on. Hope to have it ready for January.
Help on testing and so is very appreciated!

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started working on profiles!
a big difference between GraphDiff and Detached.Mappers is that the last one works with static compiled expression trees
so there is no way to dinamically evaluate if a property is going to be included or not and what's the type in runtime, without loosing a lot of performance and other features
profiles allows to create a different mapper for each scenario and decide what is going to be included or not, or whats an association or composition.
please take a look at this

you may do something like this to mimic the sample you sent:
`
mapping.AddProfile(MappingProfiles.SaveAll, cfg =>
{
cfg.Type()
.Member(u => u.CustomerType).Association()
.Member(u => u.Title).Association();

   cfg.Type<Address>()
         .Member(u => u.Title).Association()
         .Member(u => u.PostCode).Association();
});

`
I need to add more samples and maybe extension methods to make it easier and more similar to what you are asking for...
(also tests and/or extensions are very welcome if you want to push something to the repo)
have a nice weekend!

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My example above shows how I save the customer entity. The PostCode is used as association in Address. Here is how I save the postcode itself:

var updated = ((DbContext)dataContext).UpdateGraph<PostCode>
    (entity, map => map.AssociatedEntity(x => x.County)
       .AssociatedEntity(x => x.State)
       .AssociatedEntity(x => x.Country)
    );

So if I upgrade to Detached I will need to have add a profile in each and every store, so when saving the customer and will have the postcode as association without its own associations. And when I save the postcode it will have its associations as show above. Is this so?

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Yup, you may have an enum to use as a key (key is Object so you can pass anything to it):
enum SaveMode { Create, Update }
then configure
.UseMapping(mapping => { mapping.AddProfile(SaveMode.Update, cfg => { cfg.Type<PostCode>() .ExcludeAll() .Member(u => u.Id).Include() // Detached won't work without an Id to compare by. .Member(u => u.Country).Include().Association() // include Country and mark it as association. .Member(u => u.State).Include().Association() // include State and mark it as association. });
finally map:
dbContext.Map<PostCode>(SaveMode.Update, new { ....)

maybe I can make Association to also call Include to simplify...
it was a quick implementation... needs more feedback

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What is the mapping instance and how do I pass it on to my repository classes?

In which namespace is the MappingProfiles found?

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.UseMapping is new in 6.4.0, it's the replacement of UseDetached that supports profiles.
Profiles (for now) must be created when the dbcontext is configured.

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Working on new Wiki to explain everything, but will take some time

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No problem. Started porting the entities and mappings to EF7 before adding Detached stuff.

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Sure, I'll add or help you to add missing features that you need

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It is also important to remember that the profile will be used for loading the entity and all its associations and compositions so that its added to the change tracker before the mapping/diff is done, and before saving.

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Can't find any task for me here right now. Please reopen if you need anything.

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