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DbServer.SetSelectiveRelation Method

Set a selective relation from this server to the child server; standard database operations are restricted to those records that match the relation.

Namespace:  VO
Assembly:  VORDDClasses (in VORDDClasses.dll) Version: 2.7
 VIRTUAL METHOD SetSelectiveRelation(
	oDBChild AS USUAL := NIL,
	uRelation AS USUAL := NIL,
	cRelation AS USUAL := NIL
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oDBChild (Optional)
Type: Usual
The server attached to the child server must be specified as a DBServer object (not as an alias).  If <oDBChild> is omitted, all relations for this server are removed (the recommended way of doing this is the ClearRelations() method).
uRelation (Optional)
Type: Usual
The relation code block for the server or the name or symbol representing the field from this server; a code block is constructed and macro-compiled
cRelation (Optional)
Type: Usual
When the relation is specified as a code block, a string version of the code block can be provided as well; it is returned by the Relation() method.

Return Value

Type: Usual
TRUE if successful; otherwise, FALSE.
Sends a NotifyRecordChange message to the child server, if successful. As always, the expression should match or be a partial index of the controlling index of the child's work area.
The API can take these forms:
1oDBCustomer:SetSelectiveRelation(oDBOrders, {||_FIELD->CustNo},"CustNo")
2oDBCustomer:SetSelectiveRelation(oDBOrders, #CustNo)
3oDBCustomer:SetSelectiveRelation(oDBOrders, {#LastName,#Initial,#FirstName})
See Also