From 57306bfc9e4dce061b113754aba87fc0eda91ab5 Mon Sep 17 00:00:00 2001
From: zane-neo <zaniu@amazon.com>
Date: Tue, 4 Jun 2024 09:04:09 +0800
Subject: [PATCH] Update
 src/main/java/org/opensearch/neuralsearch/util/ProcessorDocumentUtils.java

Co-authored-by: Martin Gaievski <gaievski@amazon.com>
Signed-off-by: zane-neo <zaniu@amazon.com>
---
 .../opensearch/neuralsearch/util/ProcessorDocumentUtils.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/opensearch/neuralsearch/util/ProcessorDocumentUtils.java b/src/main/java/org/opensearch/neuralsearch/util/ProcessorDocumentUtils.java
index fbaad628e..426af38ee 100644
--- a/src/main/java/org/opensearch/neuralsearch/util/ProcessorDocumentUtils.java
+++ b/src/main/java/org/opensearch/neuralsearch/util/ProcessorDocumentUtils.java
@@ -58,7 +58,10 @@ private static void validateMapTypeValue(
         final Environment environment,
         final boolean allowEmpty
     ) {
-        if (sourceValue == null) return; // allow map type value to be null.
+        // allow map type value to be null
+        if (Objects.isNull(sourceValue) {
+             return; 
+        }
         validateDepth(sourceKey, depth, indexName, clusterService, environment);
         if (!(fieldMap instanceof Map)) { // source value is map type means configuration has to be map type
             throw new IllegalArgumentException(