Filter implementation selecting sources based on their metadata values, as set through
- domainId As
- fieldName As
%String- the name of the metadata field to filter by.
- filterOperator As
%String- the operator to use for filtering (should be a supported one for this metadata field).
- filterValue - the value to compare the actual source metadata values against.
This callback method is invoked by the
%Newmethod to provide notification that a new instance of an object is being created.
If this method returns an error then the object will not be created.
It is passed the arguments provided in the %New call. When customizing this method, override the arguments with whatever variables and types you expect to receive from %New(). For example, if you're going to call %New, passing 2 arguments, %OnNew's signature could be:
Method %OnNew(dob as %Date = "", name as %Name = "") as %Status If instead of returning a %Status code this returns an oref and this oref is a subclass of the current class then this oref will be the one returned to the caller of %New method.
This is the primary method that needs to be implemented by an actual
%iKnow.Filters.Filtersubclass to translate the abstract filter criteria the subclass addresses into a bitstring based on Source IDs. The subclass' implementation of this method should use SetSourceBitsfor this purpose, setting the requested bitstrings for each offset up to maxOffset.
This is a Set accessor method for the
Subclasses should implement this method to build a string representation of the filter instance. It should start with the filter class name, followed by a pipe (|) character and then a string representation that can be interpreted by its