| /* |
| * 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. |
| */ |
| <@pp.dropOutputFile /> |
| <@pp.changeOutputFile name="org/apache/drill/exec/record/RecordValueAccessor.java" /> |
| <#include "/@includes/license.ftl" /> |
| |
| package org.apache.drill.exec.record; |
| |
| import org.apache.drill.shaded.guava.com.google.common.collect.Lists; |
| |
| import org.apache.drill.common.types.TypeProtos; |
| import org.apache.drill.exec.expr.TypeHelper; |
| import org.apache.drill.exec.expr.holders.*; |
| import org.apache.drill.exec.vector.*; |
| |
| /* |
| * This class is generated using freemarker and the ${.template_name} template. |
| */ |
| |
| /** Wrapper around VectorAccessible to iterate over the records and fetch fields within a record. */ |
| public class RecordValueAccessor { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(RecordValueAccessor.class); |
| |
| private VectorAccessible batch; |
| private int currentIndex; |
| private ValueVector[] vectors; |
| |
| public RecordValueAccessor(VectorAccessible batch) { |
| this.batch = batch; |
| |
| resetIterator(); |
| initVectorWrappers(); |
| } |
| |
| public void resetIterator() { |
| currentIndex = -1; |
| } |
| |
| private void initVectorWrappers() { |
| BatchSchema schema = batch.getSchema(); |
| vectors = new ValueVector[schema.getFieldCount()]; |
| int fieldId = 0; |
| for (MaterializedField field : schema) { |
| Class<?> vectorClass = TypeHelper.getValueVectorClass(field.getType().getMinorType(), field.getType().getMode()); |
| vectors[fieldId] = batch.getValueAccessorById(vectorClass, fieldId).getValueVector(); |
| fieldId++; |
| } |
| } |
| |
| public boolean next() { |
| return ++currentIndex < batch.getRecordCount(); |
| } |
| |
| public void getFieldById(int fieldId, ComplexHolder holder) { |
| holder.isSet = vectors[fieldId].getAccessor().isNull(currentIndex) ? 1 : 0; |
| holder.reader = (vectors[fieldId]).getReader(); |
| holder.reader.setPosition(currentIndex); |
| } |
| |
| <#list vv.types as type> |
| <#list type.minor as minor> |
| <#list vv.modes as mode> |
| public void getFieldById(int fieldId, ${mode.prefix}${minor.class}Holder holder){ |
| ((${mode.prefix}${minor.class}Vector) vectors[fieldId]).getAccessor().get(currentIndex, holder); |
| } |
| |
| </#list> |
| </#list> |
| </#list> |
| } |