Selects the appropriate Mappings object to use for map operations. Call this method on the root Mappings object to obtain a Mappings instance, then call its map method to perform a mapping operation. The selection process is as follows:

• All children of this Mappings are evaluated as a group in a flat list. The group is ordered by "restrictiveness". The more filters defined for a Mappings the more restrictive it is considered. Thus, a Mappings that defines a ZoneId, SourceId, and SifVersion filter will be evaluated before a less-restrictive Mappings that defines only a SourceId filter. Because children inherit the filters of their parent, a child can never be less restrictive than its parent. Two or more Mappings with equal restrictiveness are evaluated in natural order, so care should be taken to not organize child Mappings objects with equal filters or the first one present will always be selected.
  
  
• The ordered Mappings are evaluated sequentially. For each, the ZoneId, SourceId, and Version are compared against any filters in effect for the Mappings instance. Any Mappings that does not pass the criteria is eliminated from the list of candidates.
  
  
• If no child Mappings pass the selection process, the Mappings on which this method is called is returned (i.e. self is returned) This ensures that this method always returns a non-null Mappings instance to the caller.
  
  

public virtual Mappings Select(
	string zoneId,
	string sourceId,
	SifVersion version
)

Public Overridable Function Select ( _
	zoneId As String, _
	sourceId As String, _
	version As SifVersion _
) As Mappings

public:
virtual Mappings^ Select (
	String^ zoneId, 
	String^ sourceId, 
	SifVersion^ version
)