Github user mgaido91 commented on a diff in the pull request: https://github.com/apache/incubator-livy/pull/117#discussion_r221887180 --- Diff: thriftserver/server/src/main/scala/org/apache/livy/thriftserver/operation/GetTypeInfoOperation.scala --- @@ -0,0 +1,130 @@ +/* + * 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.livy.thriftserver.operation + +import java.sql.{DatabaseMetaData, Types} + +import org.apache.hive.service.cli.{HiveSQLException, OperationState, OperationType, SessionHandle} + +import org.apache.livy.Logging +import org.apache.livy.thriftserver.serde.ResultSet +import org.apache.livy.thriftserver.types.{BasicDataType, Field, Schema} + +sealed case class TypeInfo(name: String, sqlType: Int, precision: Option[Int], + caseSensitive: Boolean, searchable: Short, unsignedAttribute: Boolean, numPrecRadix: Option[Int]) + +/** + * GetTypeInfoOperation. + * + */ +class GetTypeInfoOperation(sessionHandle: SessionHandle) --- End diff -- not sure bout your question: - If the question is: what do we need them for? They are used when answering to metadata calls by the JDBC driver; - If the question is: can't we reuse Hive's one? No, because Hive's classes use `HiveSession` and `HiveConf` and we need to get rid of them.
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