| // 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 com.google.common.base.Preconditions; |
| import com.google.common.base.Joiner; |
| |
| import org.apache.impala.catalog.FeKuduTable; |
| import org.apache.impala.catalog.FeTable; |
| import org.apache.impala.common.AnalysisException; |
| import org.apache.impala.thrift.TAlterTableAddPartitionParams; |
| import org.apache.impala.thrift.TAlterTableParams; |
| import org.apache.impala.thrift.TAlterTableType; |
| |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Represents an ALTER TABLE ADD PARTITION statement. |
| */ |
| public class AlterTableAddPartitionStmt extends AlterTableStmt { |
| private final boolean ifNotExists_; |
| private final List<PartitionDef> partitions_; |
| |
| public AlterTableAddPartitionStmt(TableName tableName, |
| boolean ifNotExists, List<PartitionDef> partitions) { |
| super(tableName); |
| Preconditions.checkNotNull(partitions); |
| Preconditions.checkState(!partitions.isEmpty()); |
| partitions_ = partitions; |
| // If 'ifNotExists' is true, no error is raised if a partition with the same spec |
| // already exists. If multiple partitions are specified, the statement will ignore |
| // those that exist and add the rest. |
| ifNotExists_ = ifNotExists; |
| for (PartitionDef p: partitions_) { |
| p.setTableName(tableName); |
| if (!ifNotExists_) p.setPartitionShouldNotExist(); |
| } |
| } |
| |
| public boolean getIfNotExists() { return ifNotExists_; } |
| |
| @Override |
| public String toSql(ToSqlOptions options) { |
| StringBuilder sb = new StringBuilder("ALTER TABLE "); |
| if (getDb() != null) sb.append(getDb() + "."); |
| sb.append(getTbl()).append(" ADD"); |
| if (ifNotExists_) sb.append(" IF NOT EXISTS"); |
| for (PartitionDef p : partitions_) sb.append(" " + p.toSql(options)); |
| return sb.toString(); |
| } |
| |
| @Override |
| public TAlterTableParams toThrift() { |
| TAlterTableAddPartitionParams addPartParams = new TAlterTableAddPartitionParams(); |
| addPartParams.setIf_not_exists(ifNotExists_); |
| for (PartitionDef p: partitions_) addPartParams.addToPartitions(p.toThrift()); |
| TAlterTableParams params = super.toThrift(); |
| params.setAlter_type(TAlterTableType.ADD_PARTITION); |
| params.setAdd_partition_params(addPartParams); |
| return params; |
| } |
| |
| @Override |
| public void analyze(Analyzer analyzer) throws AnalysisException { |
| super.analyze(analyzer); |
| FeTable table = getTargetTable(); |
| if (table instanceof FeKuduTable) { |
| throw new AnalysisException("ALTER TABLE ADD PARTITION is not supported for " + |
| "Kudu tables: " + table.getTableName()); |
| } |
| Set<String> partitionSpecs = new HashSet<>(); |
| for (PartitionDef p: partitions_) { |
| p.analyze(analyzer); |
| |
| // Make sure no duplicate partition specs are specified |
| if (!partitionSpecs.add(p.getPartitionSpec().toCanonicalString())) { |
| throw new AnalysisException(String.format("Duplicate partition spec: (%s)", |
| Joiner.on(", ").join(p.getPartitionSpec().getPartitionSpecKeyValues()))); |
| } |
| } |
| } |
| } |