wardlican commented on a change in pull request #2186:
URL: https://github.com/apache/incubator-inlong/pull/2186#discussion_r788338181



##########
File path: 
inlong-sdk/sort-sdk/src/main/java/org/apache/inlong/sdk/sort/impl/InLongTopicManagerImpl.java
##########
@@ -100,6 +106,25 @@ public InLongTopicFetcher addFetcher(InLongTopic 
inLongTopic) {
         }
     }
 
+    /**
+     * create fetcher (pulsar,tube,kafka)
+     *
+     * @param inLongTopic {@link InLongTopic}
+     * @return {@link InLongTopicFetcher}
+     */
+    private InLongTopicFetcher createInLongTopicFetcher(InLongTopic 
inLongTopic) {
+        if 
(InlongTopicTypeEnum.PULSAR.getName().equals(inLongTopic.getTopicType())) {
+            logger.info("the topic is pulsar {}", inLongTopic);
+            return new InLongPulsarFetcherImpl(inLongTopic, context);
+        } else if 
(InlongTopicTypeEnum.TUBE.getName().equals(inLongTopic.getTopicType())) {

Review comment:
       Here, the type and type of topic are predictable, and switch case is not 
required




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