| /* |
| * 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.config.CFMetaData; |
| import org.apache.cassandra.config.Schema; |
| import org.apache.cassandra.config.ViewDefinition; |
| import org.apache.cassandra.cql3.CFName; |
| import org.apache.cassandra.db.view.View; |
| import org.apache.cassandra.exceptions.InvalidRequestException; |
| import org.apache.cassandra.exceptions.RequestValidationException; |
| import org.apache.cassandra.exceptions.UnauthorizedException; |
| import org.apache.cassandra.schema.TableParams; |
| import org.apache.cassandra.service.ClientState; |
| import org.apache.cassandra.service.MigrationManager; |
| import org.apache.cassandra.service.QueryState; |
| import org.apache.cassandra.transport.Event; |
| |
| import static org.apache.cassandra.thrift.ThriftValidation.validateColumnFamily; |
| |
| public class AlterViewStatement extends SchemaAlteringStatement |
| { |
| private final TableAttributes attrs; |
| |
| public AlterViewStatement(CFName name, TableAttributes attrs) |
| { |
| super(name); |
| this.attrs = attrs; |
| } |
| |
| public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException |
| { |
| CFMetaData baseTable = View.findBaseTable(keyspace(), columnFamily()); |
| if (baseTable != null) |
| state.hasColumnFamilyAccess(keyspace(), baseTable.cfName, Permission.ALTER); |
| } |
| |
| public void validate(ClientState state) |
| { |
| // validated in announceMigration() |
| } |
| |
| public Event.SchemaChange announceMigration(QueryState queryState, boolean isLocalOnly) throws RequestValidationException |
| { |
| CFMetaData meta = validateColumnFamily(keyspace(), columnFamily()); |
| if (!meta.isView()) |
| throw new InvalidRequestException("Cannot use ALTER MATERIALIZED VIEW on Table"); |
| |
| ViewDefinition viewCopy = Schema.instance.getView(keyspace(), columnFamily()).copy(); |
| |
| if (attrs == null) |
| throw new InvalidRequestException("ALTER MATERIALIZED VIEW WITH invoked, but no parameters found"); |
| |
| attrs.validate(); |
| |
| TableParams params = attrs.asAlteredTableParams(viewCopy.metadata.params); |
| if (params.gcGraceSeconds == 0) |
| { |
| throw new InvalidRequestException("Cannot alter gc_grace_seconds of a materialized view to 0, since this " + |
| "value is used to TTL undelivered updates. Setting gc_grace_seconds too " + |
| "low might cause undelivered updates to expire before being replayed."); |
| } |
| |
| if (params.defaultTimeToLive > 0) |
| { |
| throw new InvalidRequestException("Forbidden default_time_to_live detected for a materialized view. " + |
| "Data in a materialized view always expire at the same time than " + |
| "the corresponding data in the parent table. default_time_to_live " + |
| "must be set to zero, see CASSANDRA-12868 for more information"); |
| } |
| |
| viewCopy.metadata.params(params); |
| |
| MigrationManager.announceViewUpdate(viewCopy, isLocalOnly); |
| return new Event.SchemaChange(Event.SchemaChange.Change.UPDATED, Event.SchemaChange.Target.TABLE, keyspace(), columnFamily()); |
| } |
| |
| public String toString() |
| { |
| return String.format("AlterViewStatement(name=%s)", cfName); |
| } |
| } |