ReadSupport.ReadContext (Apache Parquet Hadoop 1.13.1 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(org.apache.parquet.schema.MessageType requestedSchema)`
`ReadContext(org.apache.parquet.schema.MessageType requestedSchema, Map<String,String> readSupportMetadata)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Map<String,String>`	`getReadSupportMetadata()`
`org.apache.parquet.schema.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(org.apache.parquet.schema.MessageType requestedSchema)
```
    Parameters:
    
    requestedSchema - the schema requested by the user. Can not be null.
  - ReadContext
```
public ReadContext(org.apache.parquet.schema.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 org.apache.parquet.schema.MessageType getRequestedSchema()
```
    Returns:
    
    the schema of the file
  - getReadSupportMetadata
```
public Map<String,String> getReadSupportMetadata()
```
    Returns:
    
    metadata specific to the ReadSupport implementation