From 667ff49d238cede923f276885b4b64d6d43ba6e8 Mon Sep 17 00:00:00 2001
From: "shaojin.wensj" <shaojin.wensj@alibaba-inc.com>
Date: Wed, 1 Jun 2022 11:17:24 +0800
Subject: [PATCH] support graalvm issue #386

---
 .../java/com/alibaba/fastjson2/JSONPath.java  | 22 ++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONPath.java b/core/src/main/java/com/alibaba/fastjson2/JSONPath.java
index 2897c520cd..b5288f9f6a 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONPath.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONPath.java
@@ -4671,7 +4671,7 @@ static final class RandomIndexSegment
             extends Segment {
         public static final RandomIndexSegment INSTANCE = new RandomIndexSegment();
 
-        Random random = new Random();
+        Random random;
 
         @Override
         public void accept(JSONReader jsonReader, Context context) {
@@ -4692,6 +4692,11 @@ public void accept(JSONReader jsonReader, Context context) {
                     }
                 }
 
+                // lazy init for graalvm
+                if (random == null) {
+                    random = new Random();
+                }
+
                 int index = Math.abs(random.nextInt()) % array.size();
                 context.value = array.get(index);
                 context.eval = true;
@@ -4749,6 +4754,11 @@ public void accept(JSONReader jsonReader, Context context) {
                 array.add(val);
             }
 
+            // lazy init for graalvm
+            if (random == null) {
+                random = new Random();
+            }
+
             int index = Math.abs(random.nextInt()) % array.size();
             context.value = array.get(index);
             context.eval = true;
@@ -4766,6 +4776,11 @@ public void eval(Context context) {
                     return;
                 }
 
+                // lazy init for graalvm
+                if (random == null) {
+                    random = new Random();
+                }
+
                 int randomIndex = Math.abs(random.nextInt()) % list.size();
                 context.value = list.get(randomIndex);
                 context.eval = true;
@@ -4778,6 +4793,11 @@ public void eval(Context context) {
                     return;
                 }
 
+                // lazy init for graalvm
+                if (random == null) {
+                    random = new Random();
+                }
+
                 int randomIndex = random.nextInt() % array.length;
                 context.value = array[randomIndex];
                 context.eval = true;