vineetgarg02 commented on a change in pull request #1315: URL: https://github.com/apache/hive/pull/1315#discussion_r464721831
########## File path: ql/src/java/org/apache/hadoop/hive/ql/ddl/table/drop/PrepareStatementAnalyzer.java ########## @@ -0,0 +1,81 @@ +/* + * 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.hadoop.hive.ql.ddl.table.drop; + +import org.apache.hadoop.hive.ql.QueryState; +import org.apache.hadoop.hive.ql.ddl.DDLSemanticAnalyzerFactory.DDLType; +import org.apache.hadoop.hive.ql.parse.ASTNode; +import org.apache.hadoop.hive.ql.parse.CalcitePlanner; +import org.apache.hadoop.hive.ql.parse.HiveParser; +import org.apache.hadoop.hive.ql.parse.SemanticException; +import org.apache.hadoop.hive.ql.session.SessionState; + +/** + * Analyzer for Prepare queries. This analyzer generates plan for the parameterized query + * and save it in cache + */ +@DDLType(types = HiveParser.TOK_PREPARE) +public class PrepareStatementAnalyzer extends CalcitePlanner { + + public PrepareStatementAnalyzer(QueryState queryState) throws SemanticException { + super(queryState); + } + + private String getQueryName(ASTNode root) { + ASTNode queryNameAST = (ASTNode)(root.getChild(1)); + return queryNameAST.getText(); + } + + /** + * This method saves the current {@link PrepareStatementAnalyzer} object as well as + * the config used to compile the plan. + * @param root + * @throws SemanticException + */ + private void savePlan(String queryName) throws SemanticException{ + SessionState ss = SessionState.get(); + assert(ss != null); + + if (ss.getPreparePlans().containsKey(queryName)) { + throw new SemanticException("Prepare query: " + queryName + " already exists."); + } + ss.getPreparePlans().put(queryName, this); Review comment: Yes, will update the code. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: gitbox-unsubscr...@hive.apache.org For additional commands, e-mail: gitbox-h...@hive.apache.org
