com.facebook.presto.hive

Class AbstractDwrfEncryptionInformationSource

java.lang.Object

com.facebook.presto.hive.AbstractDwrfEncryptionInformationSource

All Implemented Interfaces:

EncryptionInformationSource

public abstract class AbstractDwrfEncryptionInformationSource
extends Object
implements EncryptionInformationSource

Constructor Summary

Constructors

Constructor and Description
AbstractDwrfEncryptionInformationSource()

Method Summary

Modifier and Type	Method and Description
Optional<EncryptionInformation>	getReadEncryptionInformation(ConnectorSession session, Table table, Optional<Set<HiveColumnHandle>> requestedColumns) Return encryption information for an unpartitioned table
Optional<Map<String,EncryptionInformation>>	getReadEncryptionInformation(ConnectorSession session, Table table, Optional<Set<HiveColumnHandle>> requestedColumns, Map<String,Partition> partitions) Return encryption for a partitioned table
protected abstract Map<String,EncryptionInformation>	getReadEncryptionInformationInternal(ConnectorSession session, Table table, Optional<Set<HiveColumnHandle>> requestedColumns, Map<String,Partition> partitions, Map<String,String> fieldToKeyReference, DwrfTableEncryptionProperties encryptionProperties)
protected abstract EncryptionInformation	getReadEncryptionInformationInternal(ConnectorSession session, Table table, Optional<Set<HiveColumnHandle>> requestedColumns, Map<String,String> fieldToKeyReference, DwrfTableEncryptionProperties encryptionProperties)
Optional<EncryptionInformation>	getWriteEncryptionInformation(ConnectorSession session, TableEncryptionProperties tableEncryptionProperties, String dbName, String tableName) Return information required for writing to a table.
protected abstract EncryptionInformation	getWriteEncryptionInformationInternal(ConnectorSession session, DwrfTableEncryptionProperties tableEncryptionProperties, String dbName, String tableName)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDwrfEncryptionInformationSource

public AbstractDwrfEncryptionInformationSource()

Method Detail

getReadEncryptionInformation

public Optional<Map<String,EncryptionInformation>> getReadEncryptionInformation(ConnectorSession session,
                                                                                Table table,
                                                                                Optional<Set<HiveColumnHandle>> requestedColumns,
                                                                                Map<String,Partition> partitions)

Description copied from interface: EncryptionInformationSource

Return encryption for a partitioned table

Specified by:

getReadEncryptionInformation in interface EncryptionInformationSource

Parameters:

session - Session object for the associated query

table - Table information

requestedColumns - The columns that the query is requesting access to. The implementations can use this to only return information for the requested columns

partitions - Map from partition names to the column objects

Returns:

Map from the partition name to the encryption information for that respective partition. The implementation can decide to return information for selected partitions. The implementation should return Optional.empty() if it does not have any encryption information available for the given table and partitions, either due to the format or the table not having any encrypted data.

getReadEncryptionInformationInternal

protected abstract Map<String,EncryptionInformation> getReadEncryptionInformationInternal(ConnectorSession session,
                                                                                          Table table,
                                                                                          Optional<Set<HiveColumnHandle>> requestedColumns,
                                                                                          Map<String,Partition> partitions,
                                                                                          Map<String,String> fieldToKeyReference,
                                                                                          DwrfTableEncryptionProperties encryptionProperties)

getReadEncryptionInformation

public Optional<EncryptionInformation> getReadEncryptionInformation(ConnectorSession session,
                                                                    Table table,
                                                                    Optional<Set<HiveColumnHandle>> requestedColumns)

Description copied from interface: EncryptionInformationSource

Return encryption information for an unpartitioned table

Specified by:

getReadEncryptionInformation in interface EncryptionInformationSource

Parameters:

session - Session object for the associated query

table - Table information

requestedColumns - The columns that the query is requesting access to. The implementations can use this to only return information for the requested columns

Returns:

Encryption information for the given table. The implementation should return Optional.empty() if it does not have any encryption information available for the given table, either due to the format or the table not having any encrypted data.

getReadEncryptionInformationInternal

protected abstract EncryptionInformation getReadEncryptionInformationInternal(ConnectorSession session,
                                                                              Table table,
                                                                              Optional<Set<HiveColumnHandle>> requestedColumns,
                                                                              Map<String,String> fieldToKeyReference,
                                                                              DwrfTableEncryptionProperties encryptionProperties)

getWriteEncryptionInformation

public Optional<EncryptionInformation> getWriteEncryptionInformation(ConnectorSession session,
                                                                     TableEncryptionProperties tableEncryptionProperties,
                                                                     String dbName,
                                                                     String tableName)

Description copied from interface: EncryptionInformationSource

Return information required for writing to a table. This method is intended to be used for both partitioned and unpartitioned tables since Presto isn't aware of the partitions that are being written to ahead of time.

Specified by:

getWriteEncryptionInformation in interface EncryptionInformationSource

Parameters:

session - Session object for the associated query

tableEncryptionProperties - Table encryption information

dbName - database name

tableName - table name

Returns:

Encryption information for the given table. The implementation should return Optional.empty() if it does not have any encryption information available for the given table, either due to the format or the table not having any encrypted data.

getWriteEncryptionInformationInternal

protected abstract EncryptionInformation getWriteEncryptionInformationInternal(ConnectorSession session,
                                                                               DwrfTableEncryptionProperties tableEncryptionProperties,
                                                                               String dbName,
                                                                               String tableName)