Package org.apache.cassandra.io.sstable

Interface SSTableId

All Superinterfaces:

CellSourceIdentifier

All Known Implementing Classes:

SequenceBasedSSTableId, UUIDBasedSSTableId

public interface SSTableId
extends CellSourceIdentifier

Represents a unique identifier in the sstable descriptor filename. This ensures each sstable file uniqueness for the certain table on a single node. However, new implementations should ensure the uniqueness across the entire cluster. The legacy implementation which does not satisfy cluster-wide uniqueness will be deprecated and eventually removed.

A new implementation must adhere to the following invariants: - Must be locally sortable - that is, the comparison must reflect the comparison of generation times of identifiers generated on the same node - String representation must *not* include the Descriptor.FILENAME_SEPARATOR character, see Descriptor.fromFileWithComponent(File) - must be case-insensitive because the sstables can be stored on case-insensitive file system

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	SSTableId.Builder<T extends SSTableId>	Builder that can create instances of certain implementation of SSTableId.

Method Summary

Modifier and Type	Method	Description
ByteBuffer	asBytes()	Creates a byte format of the identifier that can be parsed by SSTableId.Builder.fromBytes(ByteBuffer)
String	toString()	Creates a String format of the identifier that can be parsed by SSTableId.Builder.fromString(String)

Methods inherited from interface org.apache.cassandra.db.CellSourceIdentifier

isEqualSource

Method Details

asBytes

ByteBuffer asBytes()

Creates a byte format of the identifier that can be parsed by SSTableId.Builder.fromBytes(ByteBuffer)

toString

String toString()

Creates a String format of the identifier that can be parsed by SSTableId.Builder.fromString(String)

Must not contain any Descriptor.FILENAME_SEPARATOR character as it is used in the Descriptor see Descriptor.fromFileWithComponent(File)

Overrides:

toString in class Object