org.apache.parquet.hadoop.metadata

Class FileMetaData

java.lang.Object

org.apache.parquet.hadoop.metadata.FileMetaData

All Implemented Interfaces:

Serializable

public final class FileMetaData
extends Object
implements Serializable

File level meta data (Schema, codec, ...)

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FileMetaData.EncryptionType

Constructor Summary

Constructors

Constructor and Description
FileMetaData(MessageType schema, Map<String,String> keyValueMetaData, String createdBy) FileMetaData for writers.
FileMetaData(MessageType schema, Map<String,String> keyValueMetaData, String createdBy, FileMetaData.EncryptionType encryptionType, InternalFileDecryptor fileDecryptor) FileMetaData for readers (decryptors).
FileMetaData(MessageType schema, Map<String,String> keyValueMetaData, String createdBy, InternalFileDecryptor fileDecryptor) Deprecated.

Method Summary

Modifier and Type	Method and Description
String	getCreatedBy()
FileMetaData.EncryptionType	getEncryptionType()
InternalFileDecryptor	getFileDecryptor()
Map<String,String>	getKeyValueMetaData()
MessageType	getSchema()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FileMetaData

public FileMetaData(MessageType schema,
                    Map<String,String> keyValueMetaData,
                    String createdBy)

FileMetaData for writers.

Parameters:

schema - the schema for the file

keyValueMetaData - the app specific metadata

createdBy - the description of the library that created the file

Throws:

NullPointerException - if schema or keyValueMetaData is null

FileMetaData

@Deprecated
public FileMetaData(MessageType schema,
                                Map<String,String> keyValueMetaData,
                                String createdBy,
                                InternalFileDecryptor fileDecryptor)

Deprecated.

FileMetaData

public FileMetaData(MessageType schema,
                    Map<String,String> keyValueMetaData,
                    String createdBy,
                    FileMetaData.EncryptionType encryptionType,
                    InternalFileDecryptor fileDecryptor)

FileMetaData for readers (decryptors).

Method Detail

getSchema

public MessageType getSchema()

Returns:

the schema for the file

toString

public String toString()

Overrides:

toString in class Object

getKeyValueMetaData

public Map<String,String> getKeyValueMetaData()

Returns:

meta data for extensions

getCreatedBy

public String getCreatedBy()

Returns:

the description of the library that created the file

getFileDecryptor

public InternalFileDecryptor getFileDecryptor()

getEncryptionType

public FileMetaData.EncryptionType getEncryptionType()