ruanwenjun commented on code in PR #10624:
URL: https://github.com/apache/dolphinscheduler/pull/10624#discussion_r907196504


##########
dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/expand/ExternalFunctionExtensionCenter.java:
##########
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.common.expand;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+
+@Component
+public class ExternalFunctionExtensionCenter {
+
+    @Autowired
+    private TimePlaceholderResolverExpandService expandService;
+
+    private static ExternalFunctionExtensionCenter expandCenter;
+
+    @PostConstruct
+    public void init() {
+        expandCenter = this;
+        expandCenter.expandService = this.expandService;
+    }
+
+    public static boolean timeFunctionNeedExpand(String placeholderName) {
+        return 
expandCenter.expandService.timeFunctionNeedExpand(placeholderName);
+    }
+
+    public static String timeFunctionExtension(Integer processInstanceId, 
String timeZone, String placeholderName) {
+        return 
expandCenter.expandService.timeFunctionExtension(processInstanceId, timeZone, 
placeholderName);
+    }
+}

Review Comment:
   And if someone uses this method in not spring object, he will get error.



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