[GitHub] [iotdb] SilverNarcissus commented on a change in pull request #4862: Enable display and deletion of schema templates

[GitBox <gi...@apache.org>]

SilverNarcissus commented on a change in pull request #4862:
URL: https://github.com/apache/iotdb/pull/4862#discussion_r786027182



##########
File path: session/src/main/java/org/apache/iotdb/session/Session.java
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@@ -2162,12 +2163,48 @@ public boolean isPathExistInTemplate(String templateName, String path)
     return resp.getMeasurements();
   }
 
+  /** @return All template names. */
+  public List<String> showAllTemplates()
+      throws StatementExecutionException, IoTDBConnectionException {
+    TSQueryTemplateReq req = new TSQueryTemplateReq();
+    req.setName("");
+    req.setQueryType(TemplateQueryType.SHOW_TEMPLATES.ordinal());
+    TSQueryTemplateResp resp = defaultSessionConnection.querySchemaTemplate(req);
+    return resp.getMeasurements();
+  }
+
+  /** @return All paths have been set to designated template. */
+  public List<String> showPathsTemplateSetOn(String templateName)
+      throws StatementExecutionException, IoTDBConnectionException {
+    TSQueryTemplateReq req = new TSQueryTemplateReq();
+    req.setName(templateName);
+    req.setQueryType(TemplateQueryType.SHOW_SET_TEMPLATES.ordinal());
+    TSQueryTemplateResp resp = defaultSessionConnection.querySchemaTemplate(req);
+    return resp.getMeasurements();
+  }
+
+  /** @return All paths are using designated template. */
+  public List<String> showPathsTemplateUsingOn(String templateName)
+      throws StatementExecutionException, IoTDBConnectionException {
+    TSQueryTemplateReq req = new TSQueryTemplateReq();
+    req.setName(templateName);
+    req.setQueryType(TemplateQueryType.SHOW_USING_TEMPLATES.ordinal());
+    TSQueryTemplateResp resp = defaultSessionConnection.querySchemaTemplate(req);
+    return resp.getMeasurements();
+  }
+
   public void unsetSchemaTemplate(String prefixPath, String templateName)
       throws IoTDBConnectionException, StatementExecutionException {
     TSUnsetSchemaTemplateReq request = getTSUnsetSchemaTemplateReq(prefixPath, templateName);
     defaultSessionConnection.unsetSchemaTemplate(request);
   }
 
+  public void dropSchemaTemplate(String templateName)

Review comment:
       We should also update API doc at: docs/UserGuide/API/Programming-Java-Native-API.md




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