Add an index to the filter, returning an integer that can be used to identify the index in the selection functions.

Combine this filter with another filter in a logical "AND" operation.

Combine this filter with another filter in a logical "AND NOT" operation.

Compare two SearchFilters for equality.

Returns an array of integers containing the document ids of the documents selected in the filter.

Combine this filter with another filter in a logical "OR" operation.

Read the search filter from a disk file.

Select all of the documents in the index.

Set the selection state of a range of document ids, from firstItem to lastItem, to the selection state indicated by fSelected.

Set the selection state of an array of document ids to the selection state indicated by fSelected.

Select no documents in the index.

Save the search filter to a disk file.

Returns the number of indexes in the SearchFilter.