add classify_tvf

Author: Liu Zhengyun

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/function/TableBuiltinTableFunction.java

@@ -25,6 +25,7 @@
 import org.apache.iotdb.commons.udf.builtin.relational.tvf.SessionTableFunction;
 import org.apache.iotdb.commons.udf.builtin.relational.tvf.TumbleTableFunction;
 import org.apache.iotdb.commons.udf.builtin.relational.tvf.VariationTableFunction;
+import org.apache.iotdb.db.queryengine.plan.relational.function.tvf.ClassifyTableFunction;
 import org.apache.iotdb.db.queryengine.plan.relational.function.tvf.ForecastTableFunction;
 import org.apache.iotdb.db.queryengine.plan.relational.function.tvf.PatternMatchTableFunction;
 import org.apache.iotdb.udf.api.relational.TableFunction;
@@ -42,7 +43,8 @@ public enum TableBuiltinTableFunction {
   VARIATION("variation"),
   CAPACITY("capacity"),
   FORECAST("forecast"),
-  PATTERN_MATCH("pattern_match");
+  PATTERN_MATCH("pattern_match"),
+  CLASSIFY("classify");
 
   private final String functionName;
 
@@ -86,6 +88,8 @@ public static TableFunction getBuiltinTableFunction(String functionName) {
         return new CapacityTableFunction();
       case "forecast":
         return new ForecastTableFunction();
+      case "classify":
+        return new ClassifyTableFunction();
       default:
         throw new UnsupportedOperationException("Unsupported table function: " + functionName);
     }