Interface IAdornmentProvider

All Known Implementing Classes:
AllValidAdornments, LazyPlanningAdornments
public interface IAdornmentProvider
An adornment provider is used to define the adornments the pattern matcher should prepare for.

A default implementation is available in AllValidAdornments that describes all adornments fulfilling the parameter direction declarations; another default option (with better performance but restricted applicability) is LazyPlanningAdornments.

Users may implement this interface to limit the number of prepared plans based on some runtime information: 

class SomeAdornments{

    public Iterable<Set<PParameter>> getAdornments(PQuery query){
        if (SomeGeneratedQuerySpecification.instance().getInternalQueryRepresentation().equals(query)){
            return Collections.singleton(Sets.filter(Sets.newHashSet(query.getParameters()), new Predicate() {

                 @Override
                 public boolean apply(PParameter input) {
                     // Decide whether this particular parameter will be bound
                     return false;
                 }
             }));
        }
        // Returning an empty iterable is safe for unknown queries
        return Collections.emptySet();
    }

}
Since:
1.5