org.apache.parquet.hadoop.api

Class ReadSupport.ReadContext

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 and Description
ReadContext(MessageType requestedSchema)
ReadContext(MessageType requestedSchema, Map<String,String> readSupportMetadata)

Method Summary

Modifier and Type	Method and 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