Adjust annotation

rubenada · Mar 21, 2024 · f9b415e · f9b415e
1 parent a4f9b07
commit f9b415e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/core/src/main/java/org/apache/calcite/rel/metadata/RelMdCollation.java b/core/src/main/java/org/apache/calcite/rel/metadata/RelMdCollation.java
@@ -62,6 +62,7 @@
 import com.google.common.collect.Multimap;
 import com.google.common.collect.Ordering;
 
+import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
 import java.util.ArrayList;
@@ -284,7 +285,7 @@ public static List<RelCollation> sort(RelCollation collation) {
 
   /** Helper method to determine a
    * {@link org.apache.calcite.rel.core.Calc}'s collation. */
-  public static @Nullable List<RelCollation> calc(RelMetadataQuery mq, RelNode input,
+  public static @NonNull List<RelCollation> calc(RelMetadataQuery mq, RelNode input,
       RexProgram program) {
     final List<RexNode> projects =
         program
@@ -296,7 +297,7 @@ public static List<RelCollation> sort(RelCollation collation) {
   }
 
   /** Helper method to determine a {@link Project}'s collation. */
-  public static @Nullable List<RelCollation> project(RelMetadataQuery mq,
+  public static @NonNull List<RelCollation> project(RelMetadataQuery mq,
       RelNode input, List<? extends RexNode> projects) {
     final NavigableSet<RelCollation> collations = new TreeSet<>();
     final List<RelCollation> inputCollations = mq.collations(input);