org.apache.parquet.hadoop.metadata

Class ParquetMetadata

java.lang.Object

org.apache.parquet.hadoop.metadata.ParquetMetadata

public class ParquetMetadata
extends Object

Meta Data block stored in the footer of the file contains file level (Codec, Schema, ...) and block level (location, columns, record count, ...) meta data

Constructor Summary

Constructors

Constructor and Description
ParquetMetadata(FileMetaData fileMetaData, List<BlockMetaData> blocks)

Method Summary

Modifier and Type	Method and Description
static ParquetMetadata	fromJSON(String json)
List<BlockMetaData>	getBlocks()
FileMetaData	getFileMetaData()
static String	toJSON(ParquetMetadata parquetMetaData)
static String	toPrettyJSON(ParquetMetadata parquetMetaData)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ParquetMetadata

public ParquetMetadata(FileMetaData fileMetaData,
                       List<BlockMetaData> blocks)

Parameters:

fileMetaData - file level metadata

blocks - block level metadata

Method Detail

toJSON

public static String toJSON(ParquetMetadata parquetMetaData)

Parameters:

parquetMetaData - an instance of parquet metadata to convert

Returns:

the json representation

toPrettyJSON

public static String toPrettyJSON(ParquetMetadata parquetMetaData)

Parameters:

parquetMetaData - an instance of parquet metadata to convert

Returns:

the pretty printed json representation

fromJSON

public static ParquetMetadata fromJSON(String json)

Parameters:

json - the json representation

Returns:

the parsed object

getBlocks

public List<BlockMetaData> getBlocks()

Returns:

block level metadata

getFileMetaData

public FileMetaData getFileMetaData()

Returns:

file level meta data

toString

public String toString()

Overrides:

toString in class Object