| /** |
| * 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.tajo.engine.planner.physical; |
| |
| import org.apache.tajo.catalog.CatalogUtil; |
| import org.apache.tajo.catalog.TableMeta; |
| import org.apache.tajo.conf.TajoConf.ConfVars; |
| import org.apache.tajo.engine.planner.logical.InsertNode; |
| import org.apache.tajo.engine.planner.logical.PersistentStoreNode; |
| import org.apache.tajo.storage.Appender; |
| import org.apache.tajo.storage.StorageConstants; |
| import org.apache.tajo.storage.StorageManagerFactory; |
| import org.apache.tajo.storage.Tuple; |
| import org.apache.tajo.worker.TaskAttemptContext; |
| |
| import java.io.IOException; |
| |
| /** |
| * This is a physical executor to store a table part into a specified storage. |
| */ |
| public class StoreTableExec extends UnaryPhysicalExec { |
| private PersistentStoreNode plan; |
| private Appender appender; |
| private Tuple tuple; |
| |
| public StoreTableExec(TaskAttemptContext context, PersistentStoreNode plan, PhysicalExec child) throws IOException { |
| super(context, plan.getInSchema(), plan.getOutSchema(), child); |
| this.plan = plan; |
| } |
| |
| public void init() throws IOException { |
| super.init(); |
| |
| TableMeta meta; |
| if (plan.hasOptions()) { |
| meta = CatalogUtil.newTableMeta(plan.getStorageType(), plan.getOptions()); |
| } else { |
| meta = CatalogUtil.newTableMeta(plan.getStorageType()); |
| } |
| |
| if (plan instanceof InsertNode) { |
| InsertNode createTableNode = (InsertNode) plan; |
| appender = StorageManagerFactory.getStorageManager(context.getConf()).getAppender(meta, |
| createTableNode.getTableSchema(), context.getOutputPath()); |
| } else { |
| String nullChar = context.getQueryContext().get(ConfVars.CSVFILE_NULL.varname, ConfVars.CSVFILE_NULL.defaultVal); |
| meta.putOption(StorageConstants.CSVFILE_NULL, nullChar); |
| appender = StorageManagerFactory.getStorageManager(context.getConf()).getAppender(meta, outSchema, |
| context.getOutputPath()); |
| } |
| |
| appender.enableStats(); |
| appender.init(); |
| } |
| |
| /* (non-Javadoc) |
| * @see PhysicalExec#next() |
| */ |
| @Override |
| public Tuple next() throws IOException { |
| while((tuple = child.next()) != null) { |
| appender.addTuple(tuple); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void rescan() throws IOException { |
| // nothing to do |
| } |
| |
| public void close() throws IOException { |
| super.close(); |
| |
| if(appender != null){ |
| appender.flush(); |
| appender.close(); |
| // Collect statistics data |
| context.setResultStats(appender.getStats()); |
| if (context.getTaskId() != null) { |
| context.addShuffleFileOutput(0, context.getTaskId().toString()); |
| } |
| } |
| |
| appender = null; |
| plan = null; |
| } |
| } |