Changing a Relationship Precedence in Dynamics AX

By Brandon Carmichael | October 31, 2016

Changing a relationship precedence in dynamics ax

Have you ever been in a scenario where a data source has more than one relationship to a table it is being linked to? I have. It wasn’t a problem until I wanted the second relationship to take priority.

So the real question is, how to specify what relationship should the table use?

relationship-precedence_brandon

 

In my example, on the InventTable I have multiple relationships defined. Please note though:

InventTable.AlcholoManufacturerID_RU == VendTable.AccountNum InventTable.PrimaryVendorId == VendTable.AccountNum

On my form: EcoResProductDetailsExtended, I added VendTable as a data source.

Well, how does AX know which relationship I want take precedence? By default, AX uses the first one. In this case, the AlcoholManufacturer_RU relationship takes precedence.

relationship-precedence_brandon-2

 

To change what relationship takes precedence I overloaded the init() method.

relationship-precendence_brandon-3

 

  1. First, you must tell the data source what relationship you want to use.
vendtable_ds.joinRelation("PrimaryVendTable");

2. Second, you must make the relationship the active relationship.

VendTable_ds.linkActive();

3. Third, you must execute the query.

vendtable_ds.executeQuery();

 

It is important to note, this must all be done before the super(). By following these simple steps, you will set a tables relationship precedence on a data source with more than one defined relationship.

Your init() method should look like the following.

public void init()
{
    vendtable_ds.joinRelation("PrimaryVendTable");
    VendTable_ds.linkActive();
    vendtable_ds.executeQuery();
    super();
}

 

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