| /* |
| * 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.nio.ByteBuffer; |
| import java.util.*; |
| |
| import org.apache.cassandra.auth.Permission; |
| import org.apache.cassandra.config.*; |
| import org.apache.cassandra.cql3.*; |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.db.marshal.UTF8Type; |
| import org.apache.cassandra.db.marshal.UserType; |
| import org.apache.cassandra.exceptions.*; |
| import org.apache.cassandra.schema.KeyspaceMetadata; |
| import org.apache.cassandra.service.ClientState; |
| import org.apache.cassandra.service.MigrationManager; |
| import org.apache.cassandra.transport.Event; |
| |
| public class CreateTypeStatement extends SchemaAlteringStatement |
| { |
| private final UTName name; |
| private final List<ColumnIdentifier> columnNames = new ArrayList<>(); |
| private final List<CQL3Type.Raw> columnTypes = new ArrayList<>(); |
| private final boolean ifNotExists; |
| |
| public CreateTypeStatement(UTName name, boolean ifNotExists) |
| { |
| super(); |
| this.name = name; |
| this.ifNotExists = ifNotExists; |
| } |
| |
| @Override |
| public void prepareKeyspace(ClientState state) throws InvalidRequestException |
| { |
| if (!name.hasKeyspace()) |
| name.setKeyspace(state.getKeyspace()); |
| } |
| |
| public void addDefinition(ColumnIdentifier name, CQL3Type.Raw type) |
| { |
| columnNames.add(name); |
| columnTypes.add(type); |
| } |
| |
| public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException |
| { |
| state.hasKeyspaceAccess(keyspace(), Permission.CREATE); |
| } |
| |
| public void validate(ClientState state) throws RequestValidationException |
| { |
| KeyspaceMetadata ksm = Schema.instance.getKSMetaData(name.getKeyspace()); |
| if (ksm == null) |
| throw new InvalidRequestException(String.format("Cannot add type in unknown keyspace %s", name.getKeyspace())); |
| |
| if (ksm.types.get(name.getUserTypeName()).isPresent() && !ifNotExists) |
| throw new InvalidRequestException(String.format("A user type of name %s already exists", name)); |
| |
| for (CQL3Type.Raw type : columnTypes) |
| if (type.isCounter()) |
| throw new InvalidRequestException("A user type cannot contain counters"); |
| } |
| |
| public static void checkForDuplicateNames(UserType type) throws InvalidRequestException |
| { |
| for (int i = 0; i < type.size() - 1; i++) |
| { |
| ByteBuffer fieldName = type.fieldName(i); |
| for (int j = i+1; j < type.size(); j++) |
| { |
| if (fieldName.equals(type.fieldName(j))) |
| throw new InvalidRequestException(String.format("Duplicate field name %s in type %s", |
| UTF8Type.instance.getString(fieldName), |
| UTF8Type.instance.getString(type.name))); |
| } |
| } |
| } |
| |
| @Override |
| public String keyspace() |
| { |
| return name.getKeyspace(); |
| } |
| |
| private UserType createType() throws InvalidRequestException |
| { |
| List<ByteBuffer> names = new ArrayList<>(columnNames.size()); |
| for (ColumnIdentifier name : columnNames) |
| names.add(name.bytes); |
| |
| List<AbstractType<?>> types = new ArrayList<>(columnTypes.size()); |
| for (CQL3Type.Raw type : columnTypes) |
| types.add(type.prepare(keyspace()).getType()); |
| |
| return new UserType(name.getKeyspace(), name.getUserTypeName(), names, types); |
| } |
| |
| public Event.SchemaChange announceMigration(boolean isLocalOnly) throws InvalidRequestException, ConfigurationException |
| { |
| KeyspaceMetadata ksm = Schema.instance.getKSMetaData(name.getKeyspace()); |
| assert ksm != null; // should haven't validate otherwise |
| |
| // Can happen with ifNotExists |
| if (ksm.types.get(name.getUserTypeName()).isPresent()) |
| return null; |
| |
| UserType type = createType(); |
| checkForDuplicateNames(type); |
| MigrationManager.announceNewType(type, isLocalOnly); |
| return new Event.SchemaChange(Event.SchemaChange.Change.CREATED, Event.SchemaChange.Target.TYPE, keyspace(), name.getStringTypeName()); |
| } |
| } |