From c97eacbec5b29cdaad65f9f4e1799cf0fd5142bf Mon Sep 17 00:00:00 2001
From: guoshupei <15764973965@163.com>
Date: Wed, 8 Nov 2023 21:39:45 +0800
Subject: [PATCH] bugfix `head of empty list`

---
 .../linkis/common/utils/CodeAndRunTypeUtils.scala     | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/linkis-commons/linkis-common/src/main/scala/org/apache/linkis/common/utils/CodeAndRunTypeUtils.scala b/linkis-commons/linkis-common/src/main/scala/org/apache/linkis/common/utils/CodeAndRunTypeUtils.scala
index 3870fe6e58..4f32dd14d0 100644
--- a/linkis-commons/linkis-common/src/main/scala/org/apache/linkis/common/utils/CodeAndRunTypeUtils.scala
+++ b/linkis-commons/linkis-common/src/main/scala/org/apache/linkis/common/utils/CodeAndRunTypeUtils.scala
@@ -21,6 +21,8 @@ import org.apache.linkis.common.conf.CommonVars
 
 import org.apache.commons.lang3.StringUtils
 
+import scala.collection.mutable
+
 object CodeAndRunTypeUtils {
   private val CONF_LOCK = new Object()
 
@@ -101,7 +103,14 @@ object CodeAndRunTypeUtils {
   def getLanguageTypeAndCodeTypeRelationMap: Map[String, String] = {
     val codeTypeAndRunTypeRelationMap = getCodeTypeAndLanguageTypeRelationMap
     if (codeTypeAndRunTypeRelationMap.isEmpty) Map()
-    else codeTypeAndRunTypeRelationMap.flatMap(x => x._2.map(y => (y, x._1)))
+    else {
+      // codeTypeAndRunTypeRelationMap.flatMap(x => x._2.map(y => (y, x._1)))
+      val map = mutable.Map[String, String]()
+      codeTypeAndRunTypeRelationMap.foreach(kv => {
+        kv._2.foreach(v => map.put(v, kv._1))
+      })
+      map.toMap
+    }
   }
 
   def getLanguageTypeByCodeType(codeType: String, defaultLanguageType: String = ""): String = {