MV_CONTAINS avoid autoboxing

x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/data/X-Block.java.st

@@ -54,6 +54,35 @@ $else$
     $type$ get$Type$(int valueIndex);
 $endif$
 
+    /**
+     * Checks if this block has the given value at valueIndex. If at this index we have a
+     * multivalue, then it returns true if any values match.
+     *
+     * @param valueIndex the index at which we should check the value(s)
+     * @param value the value to check against
+     */
+    default boolean hasValue(int valueIndex, $type$ value) {
+        final var count = getValueCount(valueIndex);
+        final var startIndex = getFirstValueIndex(valueIndex);
+        for (int index = startIndex; index < startIndex + count; index++) {
+$if(BytesRef)$
+            var ref = new BytesRef();
+            ref = getBytesRef(index, ref);
+            if (ref.length == 0) {
+                continue;
+            }
+            if (value.equals(ref)) {
+                return true;
+            }
+$else$
+            if (value == get$Type$(index)) {
+                return true;
+            }
+$endif$
+        }
+        return false;
+    }
+
     @Override
     $Type$Vector asVector();