ReadSupport.ReadContext (Apache Parquet Hadoop 1.12.0 API)

java.lang.Object
- org.apache.parquet.hadoop.api.ReadSupport.ReadContext

Enclosing class:: ReadSupport<T>

public static final class ReadSupport.ReadContext
extends Object

information to read the file

- Constructor Summary
  
  Constructors
  Constructor Description
  
  ReadContext(MessageType requestedSchema)
  
  ReadContext(MessageType requestedSchema, Map<String,String> readSupportMetadata)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  Map<String,String> getReadSupportMetadata()
  
  MessageType getRequestedSchema()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ReadContext
```
public ReadContext(MessageType requestedSchema)
```
    Parameters:
    
    requestedSchema - the schema requested by the user. Can not be null.
  - ReadContext
```
public ReadContext(MessageType requestedSchema,
                   Map<String,String> readSupportMetadata)
```
    Parameters:
    
    requestedSchema - the schema requested by the user. Can not be null.
    
    readSupportMetadata - metadata specific to the ReadSupport implementation. Will be available in the prepareForRead phase.
- Method Detail
  - getRequestedSchema
```
public MessageType getRequestedSchema()
```
    Returns:
    
    the schema of the file
  - getReadSupportMetadata
```
public Map<String,String> getReadSupportMetadata()
```
    Returns:
    
    metadata specific to the ReadSupport implementation