| // 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.impala.analysis; |
| |
| import org.apache.impala.authorization.Privilege; |
| import org.apache.impala.catalog.Catalog; |
| import org.apache.impala.common.AnalysisException; |
| import org.apache.impala.thrift.TUseDbParams; |
| |
| /** |
| * Representation of a USE db statement. |
| */ |
| public class UseStmt extends StatementBase { |
| private final String database_; |
| |
| public UseStmt(String db) { |
| database_ = db; |
| } |
| |
| public String getDatabase() { return database_; } |
| |
| @Override |
| public String toSql() { |
| return "USE " + database_; |
| } |
| |
| @Override |
| public void analyze(Analyzer analyzer) throws AnalysisException { |
| if (!database_.equalsIgnoreCase(Catalog.DEFAULT_DB)) { |
| // USE <default> should always be allowed. |
| analyzer.getDb(database_, Privilege.ANY, true); |
| } |
| } |
| |
| public TUseDbParams toThrift() { |
| TUseDbParams params = new TUseDbParams(); |
| params.setDb(getDatabase()); |
| return params; |
| } |
| } |