RecordMaterializer (Apache Parquet Column 1.13.1 API)

java.lang.Object
- org.apache.parquet.io.api.RecordMaterializer<T>

Type Parameters:

T - the materialized object class

Direct Known Subclasses:

DummyRecordConverter, FilteringRecordMaterializer, GroupRecordConverter
```
public abstract class RecordMaterializer<T>
extends Object
```
Top-level class which should be implemented in order to materialize objects from a stream of Parquet data. Each record will be wrapped by GroupConverter.start() and GroupConverter.end(), between which the appropriate fields will be materialized.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`RecordMaterializer.RecordMaterializationException`	This exception signals that the current record is cannot be converted from parquet columns to a materialized record, but can be skipped if requested.

Constructor Summary

Constructors
Constructor Description

RecordMaterializer()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract T`	`getCurrentRecord()`
`abstract GroupConverter`	`getRootConverter()`
`void`	`skipCurrentRecord()`	Called if `getCurrentRecord()` isn't going to be called.

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

- Constructor Detail
  - RecordMaterializer
```
public RecordMaterializer()
```
- Method Detail
  - getCurrentRecord
```
public abstract T getCurrentRecord()
```
    Returns:
    
    the result of the conversion
    
    Throws:
    
    RecordMaterializer.RecordMaterializationException - to signal that a record cannot be materialized, but can be skipped
  - skipCurrentRecord
```
public void skipCurrentRecord()
```
    Called if getCurrentRecord() isn't going to be called.
  - getRootConverter
```
public abstract GroupConverter getRootConverter()
```
    Returns:
    
    the root converter for this tree