The QLandmarkUnionFilter class provides a filter which unions the results of its constituent filters. More...
#include <QLandmarkUnionFilter>
Inherits QLandmarkFilter.
QLandmarkUnionFilter () | |
QLandmarkUnionFilter ( const QLandmarkFilter & other ) | |
virtual | ~QLandmarkUnionFilter () |
void | append ( const QLandmarkFilter & filter ) |
void | clear () |
QList<QLandmarkFilter> | filters () const |
void | prepend ( const QLandmarkFilter & filter ) |
void | remove ( const QLandmarkFilter & filter ) |
void | setFilters ( const QList<QLandmarkFilter> & filters ) |
QLandmarkUnionFilter & | operator<< ( const QLandmarkFilter & filter ) |
The QLandmarkUnionFilter class provides a filter which unions the results of its constituent filters.
Conceptually it performs an OR operation and may thus be used to select landmarks which match any one of it's constituent filters.
Whether a union filter can be comprised of compound filters (i.e. union or intersection filters) is backend specific. Even if this is supported the performance of such a filter is likely to be poor.
Constructs a new union filter.
Constructs a copy of other if possible, otherwise constructs a new union filter.
Destroys the filter.
Appends the given filter to the list of unioned filters.
See also operator<<(), prepend(), and filters().
Removes all filters from the union list.
See also remove().
Returns the list of filters which form the union filter.
See also setFilters(), prepend(), append(), and remove().
Prepends the given filter to the list of unioned filters.
See also append() and filters().
Removes the given filter from the union list.
See also filters(), append(), and prepend().
Sets the filters whose criteria will be unioned.
See also filters().
Appends the given filter to the list of unioned filters.
See also append().