How hive3.0.0 customizes functions

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Sample code

Package hello_hive;import org.apache.hadoop.hive.ql.exec.UDFArgumentException;import org.apache.hadoop.hive.ql.metadata.HiveException;import org.apache.hadoop.hive.ql.udf.generic.GenericUDF;import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;import org.apache.hadoop.io.Text Import org.apache.hive.hplsql.Udf;public class HiveTest extends Udf {StringBuilder builder = new StringBuilder (); public String evaluate (String invalue) throws HiveException {int length = invalue.length (); char [] cha = invalue.toCharArray (); for (int I = 0; I