| /* |
| * 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. |
| */ |
| |
| import org.apache.drill.exec.planner.physical.WriterPrel; |
| |
| <@pp.dropOutputFile /> |
| <@pp.changeOutputFile name="org/apache/drill/exec/store/StatisticsRecordWriterImpl.java" /> |
| <#include "/@includes/license.ftl" /> |
| |
| package org.apache.drill.exec.store; |
| |
| import com.google.common.collect.Lists; |
| |
| import org.apache.drill.exec.planner.physical.WriterPrel; |
| import org.apache.drill.exec.record.VectorAccessible; |
| import org.apache.drill.exec.record.VectorWrapper; |
| import org.apache.drill.exec.store.EventBasedRecordWriter.FieldConverter; |
| import org.apache.drill.exec.vector.complex.reader.FieldReader; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| /* |
| * This class is generated using freemarker and the ${.template_name} template. |
| */ |
| |
| /** |
| * Reads records from the RecordValueAccessor and writes into StatisticsRecordCollector. |
| */ |
| public class StatisticsRecordWriterImpl { |
| private static final Logger logger = LoggerFactory.getLogger(StatisticsRecordWriterImpl.class); |
| |
| private VectorAccessible batch; |
| private StatisticsRecordWriter recordWriter; |
| private List<FieldConverter> fieldConverters; |
| |
| public StatisticsRecordWriterImpl(VectorAccessible batch, StatisticsRecordWriter recordWriter) |
| throws IOException { |
| this.batch = batch; |
| this.recordWriter = recordWriter; |
| initFieldWriters(); |
| } |
| |
| public int writeStatistics(int recordCount) throws IOException { |
| int counter = 0; |
| |
| for (; counter < recordCount; counter++) { |
| recordWriter.checkForNewPartition(counter); |
| recordWriter.startStatisticsRecord(); |
| // write the current record |
| for (FieldConverter converter : fieldConverters) { |
| converter.setPosition(counter); |
| converter.startField(); |
| converter.writeField(); |
| converter.endField(); |
| } |
| recordWriter.endStatisticsRecord(); |
| } |
| |
| return counter; |
| } |
| |
| public void flushBlockingWriter() throws IOException { |
| if (recordWriter.isBlockingWriter()) { |
| recordWriter.flushBlockingWriter(); |
| } |
| } |
| |
| private void initFieldWriters() { |
| fieldConverters = Lists.newArrayList(); |
| int fieldId = 0; |
| for (VectorWrapper<?> w : batch) { |
| if (w.getField().getName().equalsIgnoreCase(WriterPrel.PARTITION_COMPARATOR_FIELD)) { |
| continue; |
| } |
| FieldReader reader = w.getValueVector().getReader(); |
| FieldConverter converter = getConverter(recordWriter, fieldId++, w.getField().getName(), reader); |
| fieldConverters.add(converter); |
| } |
| } |
| |
| public static FieldConverter getConverter(StatisticsRecordCollector recordWriter, int fieldId, String fieldName, |
| FieldReader reader) { |
| switch (reader.getType().getMinorType()) { |
| <#list vv.types as type> |
| <#list type.minor as minor> |
| case ${minor.class?upper_case}: |
| switch (reader.getType().getMode()) { |
| case REQUIRED: |
| return recordWriter.getNew${minor.class}Converter(fieldId, fieldName, reader); |
| case OPTIONAL: |
| return recordWriter.getNewNullable${minor.class}Converter(fieldId, fieldName, reader); |
| case REPEATED: |
| return recordWriter.getNewRepeated${minor.class}Converter(fieldId, fieldName, reader); |
| default: |
| throw new UnsupportedOperationException(); |
| } |
| </#list> |
| </#list> |
| default: |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |