How to add a related entity through organization service API

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Posted on by Community Member

Hello,

I have an entity A and a related entity B. The relationship is 1:N b/w A and B.

Plugin is run when update message is triggered for object of entity A. Now, i need to add some objects of entity type B and attach them to the object of entity A.

I am using organization service context - "unit of work pattern".

I have done something like following and it is successful:

Guid entityBid = setup.serviceUser.Create(objectB);
relations.Add(new EntityReference(A.EntityLogicalName, entityBid));

var relationship = new Relationship("relation_name");
setup.serviceUser.Associate("A_name", objectA.Id, relationship, relations);

But, this does not conform to the "unit of work pattern" principle, as i am using context to manage the transaction.

If any exception happens afterwards before serviceContext.saveChanges(), all dirty objects should NOT be saved to the server, but by using above method, i have actually saved the relationship to the server even if some exception occurs later.

Is there any general proposed way to do this by using context only?

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ashlega 34,477 on at

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Hi,

Did you try using addLink?

msdn.microsoft.com/.../microsoft.xrm.sdk.client.organizationservicecontext.addlink.aspx

although, I am not sure if SaveChanges is starting a separate transaction (don't think so). But, if you are doing this in the pre/post operation plugin, you might try throwing an error from the plugin - that would cancel the whole SQL transaction, so all those changes would be rolled back (including the association, I believe)

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Community Member on at

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Hi Aseem,

As per your code, the relations means EntityReferenceCollection right?. But the EntityReference part you are assigning A.EntityLogicalName with entityBid instead of B.EntityLogicalName. So you need to change the code as,

Guid entityBid = setup.serviceUser.Create(objectB);
relations.Add(new EntityReference(B.EntityLogicalName, entityBid));

var relationship = new Relationship("relation_name");
setup.serviceUser.Associate("A_name", objectA.Id, relationship, relations);

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Michel Gueli 982 on at

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Maybe this will help:

var account = new Entity("account");

account.RelatedEntities.Add(new Relationship("contact_customer_accounts"), contacts);

contacts is an EntityCollection of contact entities.

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