BaseBatchReader

java.lang.Object
- org.apache.iceberg.arrow.vectorized.BaseBatchReader<T>

All Implemented Interfaces:

VectorizedReader<T>

Direct Known Subclasses:

ColumnarBatchReader
```
public abstract class BaseBatchReader<T>
extends java.lang.Object
implements VectorizedReader<T>
```
A base BatchReader class that contains common functionality

Field Summary

Fields
Modifier and Type Field Description

protected VectorizedArrowReader[] readers

protected VectorHolder[] vectorHolders

Constructor Summary

Constructors
Modifier Constructor Description

protected BaseBatchReader(java.util.List<VectorizedReader<?>> readers)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Release any resources allocated.
`protected void`	`closeVectors()`
`void`	`setBatchSize(int batchSize)`
`void`	`setRowGroupInfo(org.apache.parquet.column.page.PageReadStore pageStore, java.util.Map<org.apache.parquet.hadoop.metadata.ColumnPath,org.apache.parquet.hadoop.metadata.ColumnChunkMetaData> metaData, long rowPosition)`	Sets the row group information to be used with this reader

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.iceberg.parquet.VectorizedReader
read

- Field Detail
  - readers
```
protected final VectorizedArrowReader[] readers
```
  - vectorHolders
```
protected final VectorHolder[] vectorHolders
```
- Constructor Detail
  - BaseBatchReader
```
protected BaseBatchReader(java.util.List<VectorizedReader<?>> readers)
```
- Method Detail
  - setRowGroupInfo
```
public void setRowGroupInfo(org.apache.parquet.column.page.PageReadStore pageStore,
                            java.util.Map<org.apache.parquet.hadoop.metadata.ColumnPath,org.apache.parquet.hadoop.metadata.ColumnChunkMetaData> metaData,
                            long rowPosition)
```
    Description copied from interface: VectorizedReader
    
    Sets the row group information to be used with this reader
    
    Specified by:
    
    setRowGroupInfo in interface VectorizedReader<T>
    
    Parameters:
    
    pageStore - row group information for all the columns
    
    metaData - map of ColumnPath -> ColumnChunkMetaData for the row group
    
    rowPosition - the row group's row offset in the parquet file
  - closeVectors
```
protected void closeVectors()
```
  - close
```
public void close()
```
    Description copied from interface: VectorizedReader
    
    Release any resources allocated.
    
    Specified by:
    
    close in interface VectorizedReader<T>
  - setBatchSize
```
public void setBatchSize(int batchSize)
```
    Specified by:
    
    setBatchSize in interface VectorizedReader<T>