Package org.apache.orc.impl.reader

Class ReaderEncryption

java.lang.Object

org.apache.orc.impl.reader.ReaderEncryption

public class ReaderEncryption
extends Object

Constructor Summary

Constructors

Constructor	Description
ReaderEncryption()
ReaderEncryption(OrcProto.Footer footer, TypeDescription schema, long stripeStatisticsOffset, BufferChunk serializedTail, List<StripeInformation> stripes, KeyProvider provider, Configuration conf)

Method Summary

Modifier and Type	Method	Description
ReaderEncryptionKey[]	getKeys()
MaskDescriptionImpl[]	getMasks()
ReaderEncryptionVariant	getVariant(int column)	Get the variant for a given column that the user has access to.
ReaderEncryptionVariant[]	getVariants()

Methods inherited from class java.lang.Object

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

Constructor Details

ReaderEncryption

public ReaderEncryption()

ReaderEncryption

public ReaderEncryption(OrcProto.Footer footer,
 TypeDescription schema,
 long stripeStatisticsOffset,
 BufferChunk serializedTail,
 List<StripeInformation> stripes,
 KeyProvider provider,
 Configuration conf)
                 throws IOException

Throws:

IOException

Method Details

getMasks

public MaskDescriptionImpl[] getMasks()

getKeys

public ReaderEncryptionKey[] getKeys()

getVariants

public ReaderEncryptionVariant[] getVariants()

getVariant

public ReaderEncryptionVariant getVariant(int column)

Get the variant for a given column that the user has access to. If we haven't tried a given key, try to decrypt this variant's footer key to see if the KeyProvider will give it to us. If not, continue to the next variant.

Parameters:

column - the column id

Returns:

the encryption variant or null if there isn't one