diff options
Diffstat (limited to 'subprojects/store/src/main/java/tools/refinery/store/query/internal/ViewUpdateTranslator.java')
-rw-r--r-- | subprojects/store/src/main/java/tools/refinery/store/query/internal/ViewUpdateTranslator.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/subprojects/store/src/main/java/tools/refinery/store/query/internal/ViewUpdateTranslator.java b/subprojects/store/src/main/java/tools/refinery/store/query/internal/ViewUpdateTranslator.java new file mode 100644 index 00000000..1c210c5f --- /dev/null +++ b/subprojects/store/src/main/java/tools/refinery/store/query/internal/ViewUpdateTranslator.java | |||
@@ -0,0 +1,57 @@ | |||
1 | package tools.refinery.store.query.internal; | ||
2 | |||
3 | import java.util.Objects; | ||
4 | |||
5 | import org.eclipse.viatra.query.runtime.matchers.context.IQueryRuntimeContextListener; | ||
6 | import org.eclipse.viatra.query.runtime.matchers.tuple.ITuple; | ||
7 | import org.eclipse.viatra.query.runtime.matchers.tuple.Tuples; | ||
8 | |||
9 | import tools.refinery.store.model.Tuple; | ||
10 | import tools.refinery.store.query.view.RelationView; | ||
11 | |||
12 | public class ViewUpdateTranslator<D> { | ||
13 | final RelationView<D> key; | ||
14 | final ITuple filter; | ||
15 | final IQueryRuntimeContextListener listener; | ||
16 | |||
17 | public ViewUpdateTranslator(RelationView<D> key, ITuple filter, IQueryRuntimeContextListener listener) { | ||
18 | super(); | ||
19 | this.key = key; | ||
20 | this.filter = filter; | ||
21 | this.listener = listener; | ||
22 | } | ||
23 | |||
24 | public void processChange(ViewUpdate change) { | ||
25 | listener.update(key, Tuples.flatTupleOf(change.tuple()), change.isInsertion()); | ||
26 | } | ||
27 | |||
28 | public Object[] isMatching(Tuple tuple, D value){ | ||
29 | return isMatching(key.getWrappedKey().transform(tuple, value), filter); | ||
30 | } | ||
31 | @SuppressWarnings("squid:S1168") | ||
32 | private Object[] isMatching(Object[] tuple, ITuple filter) { | ||
33 | for(int i = 0; i<filter.getSize(); i++) { | ||
34 | final Object filterObject = filter.get(i); | ||
35 | if(filterObject != null && !filterObject.equals(tuple[i])) { | ||
36 | return null; | ||
37 | } | ||
38 | } | ||
39 | return tuple; | ||
40 | } | ||
41 | |||
42 | @Override | ||
43 | public int hashCode() { | ||
44 | return Objects.hash(filter, key, listener); | ||
45 | } | ||
46 | |||
47 | @Override | ||
48 | public boolean equals(Object obj) { | ||
49 | if (this == obj) | ||
50 | return true; | ||
51 | if (!(obj instanceof ViewUpdateTranslator)) | ||
52 | return false; | ||
53 | ViewUpdateTranslator<?> other = (ViewUpdateTranslator<?>) obj; | ||
54 | return Objects.equals(filter, other.filter) && Objects.equals(key, other.key) | ||
55 | && Objects.equals(listener, other.listener); | ||
56 | } | ||
57 | } | ||