Any example on how to use "xDB Contact Facet Collection Property Value Accessor" in Data Exchange Framework?

Question

using Sitecore Data Exchange Framework v1.4.1, let's assume you want to add hundreds of emails to xDB Contact > Emails facet. How would you configure DEF to add each address to the IElementDictionary<IAddress> Entries property in Addresses facet?

I am assuming "xDB Contact Facet Collection Property Value Accessor" plays a role, but how do you set it all up? You can set the collection property in it. But how do i make sure i map the fields in the IEmailAddress that is added to the collection?

any example anywhere? any ideas?

Edit 10/19/17: I do know how to add data to xDB through code. What I need is information on how to configure Sitecore Data Exchange Framework to map and import data into collection. I guess, I can simplify it once more by going back to my title and ask, how do you configure and use "xDB Contact Facet Collection Property Value Accessor" in Data Exchange Framework? Let's just forget everything else I said and simply provide me an example of how to use "xDB Contact Facet Collection Property Value Accessor" in Data Exchange Framework? What is that Value Accessor used for? Where are the examples on how to use this thing?

Answer 1

For example:

 var addressesFacet = contact.GetFacet<IContactAddresses>("Addresses");
            if (addressesFacet != null && !addressesFacet.Entries.Contains("Preffered Address"))
            {
                var address = addressesFacet.Entries.Contains("Preffered Address")
                    ? addressesFacet.Entries["Preffered Address"]
                    : addressesFacet.Entries.Create("Preffered Address");
                address.Country = contactModel.Country;
                address.PostalCode = contactModel.ZipCode;
                addressesFacet.Preferred = "Preffered Address";
            }

You can add all your address to Addresses facet or update existing address.

Don't forget to set Preferred address which Sitecore will use as a default address for contact

Answer 2

Here is an example how "xDB Contact Facet Collection Property Value Accessor" works. Have a look at this value accessor configuration.

It tries to:

1. Get DynamicsCrm facet.
2. In found facet get MarketingLists collection property
3. Writer uses Collection Value Appender that tries to add value to a MarketingLists collection.

public List<Guid> MarketingLists {get;set;}

object value = Guid.NewGuid();
MarketingLists.Add(value);

If "Do Not Use Value Appender is set" it tries to:

1. Get DynamicsCrm facet.
2. In found facet get MarketingLists collection property.
3. Writer tries to set value to MarketingLists property if value is the same type.

    object value = List<Guid>(){Guid.NewGuid(),Guid.NewGuid()};
    MarketingLists = value;