org.apache.cassandra.io.sstable.metadata

Class MetadataSerializer

java.lang.Object

org.apache.cassandra.io.sstable.metadata.MetadataSerializer

All Implemented Interfaces:

IMetadataSerializer

Direct Known Subclasses:

LegacyMetadataSerializer

public class MetadataSerializer
extends java.lang.Object
implements IMetadataSerializer

Metadata serializer for SSTables version >= 'k'.

 File format := | number of components (4 bytes) | toc | component1 | component2 | ... |
 toc         := | component type (4 bytes) | position of component |
 

IMetadataComponent.Type's ordinal() defines the order of serialization.

Constructor Summary

Constructors

Constructor and Description
MetadataSerializer()

Method Summary

Modifier and Type	Method and Description
java.util.Map<MetadataType,MetadataComponent>	deserialize(Descriptor descriptor, java.util.EnumSet<MetadataType> types) Deserialize specified metadata components from given descriptor.
java.util.Map<MetadataType,MetadataComponent>	deserialize(Descriptor descriptor, FileDataInput in, java.util.EnumSet<MetadataType> types)
MetadataComponent	deserialize(Descriptor descriptor, MetadataType type) Deserialized only metadata component specified from given descriptor.
void	mutateLevel(Descriptor descriptor, int newLevel) Mutate SSTable level
void	mutateRepairedAt(Descriptor descriptor, long newRepairedAt) Mutate repairedAt time
void	serialize(java.util.Map<MetadataType,MetadataComponent> components, DataOutputPlus out, Version version) Serialize given metadata components

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataSerializer

public MetadataSerializer()

Method Detail

serialize

public void serialize(java.util.Map<MetadataType,MetadataComponent> components,
                      DataOutputPlus out,
                      Version version)
               throws java.io.IOException

Description copied from interface: IMetadataSerializer

Serialize given metadata components

Specified by:

serialize in interface IMetadataSerializer

Parameters:

components - Metadata components to serialize

Throws:

java.io.IOException

deserialize

public java.util.Map<MetadataType,MetadataComponent> deserialize(Descriptor descriptor,
                                                                 java.util.EnumSet<MetadataType> types)
                                                          throws java.io.IOException

Description copied from interface: IMetadataSerializer

Deserialize specified metadata components from given descriptor.

Specified by:

deserialize in interface IMetadataSerializer

Parameters:

descriptor - SSTable descriptor

Returns:

Deserialized metadata components, in deserialized order.

Throws:

java.io.IOException

deserialize

public MetadataComponent deserialize(Descriptor descriptor,
                                     MetadataType type)
                              throws java.io.IOException

Description copied from interface: IMetadataSerializer

Deserialized only metadata component specified from given descriptor.

Specified by:

deserialize in interface IMetadataSerializer

Parameters:

descriptor - SSTable descriptor

type - Metadata component type to deserialize

Returns:

Deserialized metadata component. Can be null if specified type does not exist.

Throws:

java.io.IOException

deserialize

public java.util.Map<MetadataType,MetadataComponent> deserialize(Descriptor descriptor,
                                                                 FileDataInput in,
                                                                 java.util.EnumSet<MetadataType> types)
                                                          throws java.io.IOException

Throws:

java.io.IOException

mutateLevel

public void mutateLevel(Descriptor descriptor,
                        int newLevel)
                 throws java.io.IOException

Description copied from interface: IMetadataSerializer

Mutate SSTable level

Specified by:

mutateLevel in interface IMetadataSerializer

Parameters:

descriptor - SSTable descriptor

newLevel - new SSTable level

Throws:

java.io.IOException

mutateRepairedAt

public void mutateRepairedAt(Descriptor descriptor,
                             long newRepairedAt)
                      throws java.io.IOException

Description copied from interface: IMetadataSerializer

Mutate repairedAt time

Specified by:

mutateRepairedAt in interface IMetadataSerializer

Throws:

java.io.IOException