| /* |
| * 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.cassandra.cql3.statements; |
| |
| import org.apache.cassandra.auth.Permission; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.exceptions.InvalidRequestException; |
| import org.apache.cassandra.exceptions.RequestValidationException; |
| import org.apache.cassandra.exceptions.UnauthorizedException; |
| import org.apache.cassandra.service.ClientState; |
| import org.apache.cassandra.service.MigrationManager; |
| import org.apache.cassandra.thrift.ThriftValidation; |
| import org.apache.cassandra.transport.Event; |
| |
| public class DropKeyspaceStatement extends SchemaAlteringStatement |
| { |
| private final String keyspace; |
| private final boolean ifExists; |
| |
| public DropKeyspaceStatement(String keyspace, boolean ifExists) |
| { |
| super(); |
| this.keyspace = keyspace; |
| this.ifExists = ifExists; |
| } |
| |
| public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException |
| { |
| state.hasKeyspaceAccess(keyspace, Permission.DROP); |
| } |
| |
| public void validate(ClientState state) throws RequestValidationException |
| { |
| ThriftValidation.validateKeyspaceNotSystem(keyspace); |
| } |
| |
| @Override |
| public String keyspace() |
| { |
| return keyspace; |
| } |
| |
| public Event.SchemaChange announceMigration(boolean isLocalOnly) throws ConfigurationException |
| { |
| try |
| { |
| MigrationManager.announceKeyspaceDrop(keyspace, isLocalOnly); |
| return new Event.SchemaChange(Event.SchemaChange.Change.DROPPED, keyspace()); |
| } |
| catch(ConfigurationException e) |
| { |
| if (ifExists) |
| return null; |
| throw e; |
| } |
| } |
| } |