| /* |
| * 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.drill.exec.planner.sql.handlers; |
| |
| import org.apache.drill.exec.ops.QueryContext; |
| import org.apache.drill.exec.physical.PhysicalPlan; |
| import org.apache.drill.exec.planner.sql.DirectPlan; |
| import org.apache.drill.exec.planner.sql.parser.DrillSqlResetOption; |
| import org.apache.drill.exec.server.options.OptionManager; |
| import org.apache.drill.exec.server.options.OptionValue; |
| import org.apache.drill.exec.server.options.OptionValue.OptionScope; |
| import org.apache.drill.exec.server.options.QueryOptionManager; |
| import org.apache.drill.exec.work.foreman.ForemanSetupException; |
| import org.apache.calcite.sql.SqlNode; |
| import org.apache.calcite.sql.SqlSetOption; |
| |
| /** |
| * Converts a {@link SqlNode} representing: "ALTER .. RESET option | ALL" statement to a {@link PhysicalPlan}. |
| * See {@link DrillSqlResetOption}. |
| * <p> |
| * These statements have side effects i.e. the options within the system context or the session context are modified. |
| * The resulting {@link DirectPlan} returns to the client a string that is the name of the option that was updated |
| * or a value of the property |
| */ |
| public class ResetOptionHandler extends AbstractSqlSetHandler { |
| |
| /** |
| * Class constructor. |
| * @param context Context of the Query |
| */ |
| public ResetOptionHandler(QueryContext context) { |
| super(context); |
| } |
| |
| /** |
| * Handles {@link DrillSqlResetOption} query |
| */ |
| @Override |
| public final PhysicalPlan getPlan(SqlNode sqlNode) throws ForemanSetupException { |
| QueryOptionManager options = context.getOptions(); |
| SqlSetOption statement = unwrap(sqlNode, SqlSetOption.class); |
| OptionScope optionScope = getScope(statement, context.getOptions()); |
| |
| if (optionScope == OptionValue.OptionScope.SYSTEM) { |
| checkAdminPrivileges(options); |
| } |
| |
| OptionManager optionManager = options.getOptionManager(optionScope); |
| String optionName = statement.getName().toString(); |
| |
| if ("ALL".equalsIgnoreCase(optionName)) { |
| optionManager.deleteAllLocalOptions(); |
| } else { |
| optionManager.deleteLocalOption(optionName); |
| } |
| return DirectPlan.createDirectPlan(context, true, String.format("%s updated.", optionName)); |
| } |
| } |