fix: make sure to fetch null index values when null index exists

tglman · tglman · commit 7a9ec4321998 · 2024-08-26T15:01:48.000+01:00
diff --git a/core/src/main/java/com/orientechnologies/orient/core/sql/executor/FetchFromIndexStep.java b/core/src/main/java/com/orientechnologies/orient/core/sql/executor/FetchFromIndexStep.java
@@ -509,6 +509,9 @@ && allEqualities((OAndBlock) condition)) {
       } else if (isFullTextIndex(index)) {
         stream = index.streamEntries(toIndexKey(indexDef, secondValue), isOrderAsc());
         storeAcquiredStream(stream);
+      } else if (allNullCheck((OAndBlock) condition)) {
+        stream = getStreamForNullKey();
+        storeAcquiredStream(stream);
       } else {
         throw new UnsupportedOperationException(
             "Cannot evaluate " + this.condition + " on index " + index);
@@ -674,6 +677,18 @@ private static boolean allEqualities(OAndBlock condition) {
     return true;
   }
 
+  private static boolean allNullCheck(OAndBlock condition) {
+    if (condition == null) {
+      return false;
+    }
+    for (OBooleanExpression exp : condition.getSubBlocks()) {
+      if (!(exp instanceof OIsNullCondition)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
   private void processBetweenCondition() {
     OIndexDefinition definition = index.getDefinition();
     OExpression key = ((OBetweenCondition) condition).getFirst();
