| /* |
| * 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 java.io.IOException; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.apache.cassandra.auth.Permission; |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.config.Schema; |
| import org.apache.cassandra.cql3.*; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.exceptions.*; |
| import org.apache.cassandra.transport.messages.ResultMessage; |
| import org.apache.cassandra.service.ClientState; |
| import org.apache.cassandra.service.QueryState; |
| import org.apache.cassandra.service.StorageProxy; |
| import org.apache.cassandra.thrift.ThriftValidation; |
| |
| public class TruncateStatement extends CFStatement implements CQLStatement |
| { |
| public TruncateStatement(CFName name) |
| { |
| super(name); |
| } |
| |
| public int getBoundTerms() |
| { |
| return 0; |
| } |
| |
| public Prepared prepare(ClientState clientState) throws InvalidRequestException |
| { |
| return new Prepared(this); |
| } |
| |
| public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException |
| { |
| state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.MODIFY); |
| } |
| |
| public void validate(ClientState state) throws InvalidRequestException |
| { |
| ThriftValidation.validateColumnFamily(keyspace(), columnFamily()); |
| } |
| |
| public ResultMessage execute(QueryState state, QueryOptions options) throws InvalidRequestException, TruncateException |
| { |
| try |
| { |
| CFMetaData metaData = Schema.instance.getCFMetaData(keyspace(), columnFamily()); |
| if (metaData.isView()) |
| throw new InvalidRequestException("Cannot TRUNCATE materialized view directly; must truncate base table instead"); |
| |
| StorageProxy.truncateBlocking(keyspace(), columnFamily()); |
| } |
| catch (UnavailableException | TimeoutException | IOException e) |
| { |
| throw new TruncateException(e); |
| } |
| return null; |
| } |
| |
| public ResultMessage executeInternal(QueryState state, QueryOptions options) |
| { |
| try |
| { |
| ColumnFamilyStore cfs = Keyspace.open(keyspace()).getColumnFamilyStore(columnFamily()); |
| cfs.truncateBlocking(); |
| } |
| catch (Exception e) |
| { |
| throw new TruncateException(e); |
| } |
| return null; |
| } |
| } |