| 1 | package com.hammurapi.extract; |
| 2 | |
| 3 | import java.util.Map; |
| 4 | import java.util.Set; |
| 5 | |
| 6 | import com.hammurapi.extract.ComparisonResult.Type; |
| 7 | |
| 8 | public class Not<T, C> implements Predicate<T, C>, FacadeExtractor<T, Boolean, C> { |
| 9 | |
| 10 | private Predicate<T, C> predicate; |
| 11 | |
| 12 | public Not(Predicate<T, C> predicate) { |
| 13 | this.predicate = predicate; |
| 14 | } |
| 15 | |
| 16 | public ComparisonResult compareTo(Extractor<T, Boolean, C> otherPredicate) { |
| 17 | ComparisonResult cr = predicate.compareTo(otherPredicate); |
| 18 | switch (cr.getType()) { |
| 19 | case EQUAL: |
| 20 | return new ComparisonResult(Type.OPPOSITE, cr.getIndexMap()); |
| 21 | case LESS_RESTRICTIVE: |
| 22 | return new ComparisonResult(Type.OPPOSITE_LESS_RESTRICTIVE, cr.getIndexMap()); |
| 23 | case MORE_RESTRICTIVE: |
| 24 | return new ComparisonResult(Type.OPPOSITE_MORE_RESTRICTIVE, cr.getIndexMap()); |
| 25 | case NOT_EQUAL: |
| 26 | return new ComparisonResult(Type.NOT_EQUAL, cr.getIndexMap()); |
| 27 | case OPPOSITE: |
| 28 | return new ComparisonResult(Type.EQUAL, cr.getIndexMap()); |
| 29 | case OPPOSITE_LESS_RESTRICTIVE: |
| 30 | return new ComparisonResult(Type.LESS_RESTRICTIVE, cr.getIndexMap()); |
| 31 | case OPPOSITE_MORE_RESTRICTIVE: |
| 32 | return new ComparisonResult(Type.MORE_RESTRICTIVE, cr.getIndexMap()); |
| 33 | default : |
| 34 | throw new ExtractorException("Invalid comparison result"); |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | public Predicate<T, C> getPredicate() { |
| 39 | return predicate; |
| 40 | } |
| 41 | |
| 42 | public Boolean extract( |
| 43 | C context, |
| 44 | Map<C, Map<Extractor<T, ? super Boolean, C>, ? super Boolean>> cache, |
| 45 | T... obj) { |
| 46 | return !predicate.extract(context, cache, obj); |
| 47 | } |
| 48 | |
| 49 | public Set<Integer> parameterIndices() { |
| 50 | return predicate.parameterIndices(); |
| 51 | } |
| 52 | |
| 53 | |
| 54 | public boolean isContextDependent() { |
| 55 | return predicate.isContextDependent(); |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | public double getCost() { |
| 60 | return predicate.getCost(); |
| 61 | } |
| 62 | |
| 63 | } |