| /* |
| * 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.carbondata.hive; |
| |
| import java.io.IOException; |
| import java.sql.Date; |
| import java.sql.Timestamp; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.carbondata.core.datastore.block.TableBlockInfo; |
| import org.apache.carbondata.core.scan.executor.exception.QueryExecutionException; |
| import org.apache.carbondata.core.scan.model.QueryModel; |
| import org.apache.carbondata.core.scan.result.iterator.ChunkRowIterator; |
| import org.apache.carbondata.hadoop.CarbonRecordReader; |
| import org.apache.carbondata.hadoop.readsupport.CarbonReadSupport; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hive.common.type.HiveDecimal; |
| import org.apache.hadoop.hive.serde.serdeConstants; |
| import org.apache.hadoop.hive.serde2.SerDeException; |
| import org.apache.hadoop.hive.serde2.io.DateWritable; |
| import org.apache.hadoop.hive.serde2.io.DoubleWritable; |
| import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable; |
| import org.apache.hadoop.hive.serde2.io.ShortWritable; |
| import org.apache.hadoop.hive.serde2.io.TimestampWritable; |
| import org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector; |
| import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector; |
| import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector; |
| import org.apache.hadoop.hive.serde2.objectinspector.StructField; |
| import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector; |
| import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo; |
| import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils; |
| import org.apache.hadoop.io.ArrayWritable; |
| import org.apache.hadoop.io.IntWritable; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.mapred.InputSplit; |
| import org.apache.hadoop.mapred.JobConf; |
| |
| class CarbonHiveRecordReader extends CarbonRecordReader<ArrayWritable> |
| implements org.apache.hadoop.mapred.RecordReader<Void, ArrayWritable> { |
| |
| private ArrayWritable valueObj = null; |
| private long recordReaderCounter = 0; |
| private int[] columnIds; |
| |
| public CarbonHiveRecordReader(QueryModel queryModel, CarbonReadSupport<ArrayWritable> readSupport, |
| InputSplit inputSplit, JobConf jobConf) throws IOException { |
| super(queryModel, readSupport); |
| initialize(inputSplit, jobConf); |
| } |
| |
| private void initialize(InputSplit inputSplit, Configuration conf) throws IOException { |
| // The input split can contain single HDFS block or multiple blocks, so firstly get all the |
| // blocks and then set them in the query model. |
| List<CarbonHiveInputSplit> splitList; |
| if (inputSplit instanceof CarbonHiveInputSplit) { |
| splitList = new ArrayList<>(1); |
| splitList.add((CarbonHiveInputSplit) inputSplit); |
| } else { |
| throw new RuntimeException("unsupported input split type: " + inputSplit); |
| } |
| List<TableBlockInfo> tableBlockInfoList = CarbonHiveInputSplit.createBlocks(splitList); |
| queryModel.setTableBlockInfos(tableBlockInfoList); |
| readSupport |
| .initialize(queryModel.getProjectionColumns(), queryModel.getAbsoluteTableIdentifier()); |
| try { |
| carbonIterator = new ChunkRowIterator(queryExecutor.execute(queryModel)); |
| } catch (QueryExecutionException e) { |
| throw new IOException(e.getMessage(), e.getCause()); |
| } |
| final TypeInfo rowTypeInfo; |
| final List<String> columnNames; |
| List<TypeInfo> columnTypes; |
| // Get column names and sort order |
| final String colIds = conf.get("hive.io.file.readcolumn.ids"); |
| final String columnTypeProperty = conf.get(serdeConstants.LIST_COLUMN_TYPES); |
| |
| if (columnTypeProperty.length() == 0) { |
| columnTypes = new ArrayList<TypeInfo>(); |
| } else { |
| columnTypes = TypeInfoUtils.getTypeInfosFromTypeString(columnTypeProperty); |
| } |
| |
| if (valueObj == null) { |
| valueObj = new ArrayWritable(Writable.class, new Writable[columnTypes.size()]); |
| } |
| |
| if (!colIds.equals("")) { |
| String[] arraySelectedColId = colIds.split(","); |
| columnIds = new int[arraySelectedColId.length]; |
| int columnId = 0; |
| for (int j = 0; j < arraySelectedColId.length; j++) { |
| columnId = Integer.parseInt(arraySelectedColId[j]); |
| columnIds[j] = columnId; |
| } |
| } |
| |
| } |
| |
| @Override public boolean next(Void aVoid, ArrayWritable value) throws IOException { |
| if (carbonIterator.hasNext()) { |
| Object obj = readSupport.readRow(carbonIterator.next()); |
| recordReaderCounter++; |
| Writable[] objArray = (Writable[]) obj; |
| Writable[] sysArray = new Writable[value.get().length]; |
| if (columnIds != null && columnIds.length > 0 && objArray.length == columnIds.length) { |
| for (int i = 0; i < columnIds.length; i++) { |
| sysArray[columnIds[i]] = objArray[i]; |
| } |
| value.set(sysArray); |
| } else { |
| value.set(objArray); |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override public Void createKey() { |
| return null; |
| } |
| |
| @Override public ArrayWritable createValue() { |
| return valueObj; |
| } |
| |
| @Override public long getPos() throws IOException { |
| return recordReaderCounter; |
| } |
| |
| @Override public float getProgress() throws IOException { |
| return 0; |
| } |
| |
| private ArrayWritable createStruct(Object obj, StructObjectInspector inspector) |
| throws SerDeException { |
| List fields = inspector.getAllStructFieldRefs(); |
| Writable[] arr = new Writable[fields.size()]; |
| for (int i = 0; i < fields.size(); i++) { |
| StructField field = (StructField) fields.get(i); |
| Object subObj = inspector.getStructFieldData(obj, field); |
| ObjectInspector subInspector = field.getFieldObjectInspector(); |
| arr[i] = createObject(subObj, subInspector); |
| } |
| return new ArrayWritable(Writable.class, arr); |
| } |
| |
| private ArrayWritable createArray(Object obj, ListObjectInspector inspector) |
| throws SerDeException { |
| List sourceArray = inspector.getList(obj); |
| ObjectInspector subInspector = inspector.getListElementObjectInspector(); |
| List array = new ArrayList(); |
| Iterator iterator; |
| if (sourceArray != null) { |
| for (iterator = sourceArray.iterator(); iterator.hasNext(); ) { |
| Object curObj = iterator.next(); |
| Writable newObj = createObject(curObj, subInspector); |
| if (newObj != null) { |
| array.add(newObj); |
| } |
| } |
| } |
| if (array.size() > 0) { |
| ArrayWritable subArray = new ArrayWritable(((Writable) array.get(0)).getClass(), |
| (Writable[]) array.toArray(new Writable[array.size()])); |
| |
| return new ArrayWritable(Writable.class, new Writable[] { subArray }); |
| } |
| return null; |
| } |
| |
| private Writable createPrimitive(Object obj, PrimitiveObjectInspector inspector) |
| throws SerDeException { |
| if (obj == null) { |
| return null; |
| } |
| switch (inspector.getPrimitiveCategory()) { |
| case VOID: |
| return null; |
| case DOUBLE: |
| return new DoubleWritable((double) obj); |
| case INT: |
| return new IntWritable((int) obj); |
| case LONG: |
| return new LongWritable((long) obj); |
| case SHORT: |
| return new ShortWritable((short) obj); |
| case DATE: |
| return new DateWritable(new Date(Long.parseLong(String.valueOf(obj.toString())))); |
| case TIMESTAMP: |
| return new TimestampWritable(new Timestamp((long) obj)); |
| case STRING: |
| return new Text(obj.toString()); |
| case CHAR: |
| return new Text(obj.toString()); |
| case DECIMAL: |
| return new HiveDecimalWritable( |
| HiveDecimal.create((java.math.BigDecimal) obj)); |
| } |
| throw new SerDeException("Unknown primitive : " + inspector.getPrimitiveCategory()); |
| } |
| |
| private Writable createObject(Object obj, ObjectInspector inspector) throws SerDeException { |
| switch (inspector.getCategory()) { |
| case STRUCT: |
| return createStruct(obj, (StructObjectInspector) inspector); |
| case LIST: |
| return createArray(obj, (ListObjectInspector) inspector); |
| case PRIMITIVE: |
| return createPrimitive(obj, (PrimitiveObjectInspector) inspector); |
| } |
| throw new SerDeException("Unknown data type" + inspector.getCategory()); |
| } |
| } |