io.delta.kernel.internal.checkpoints

Class CheckpointInstance

Object

io.delta.kernel.internal.checkpoints.CheckpointInstance

All Implemented Interfaces:

Comparable<CheckpointInstance>

public class CheckpointInstance
extends Object
implements Comparable<CheckpointInstance>

Metadata about Delta checkpoint.

Field Summary

Fields

Modifier and Type	Field and Description
static CheckpointInstance	MAX_VALUE Placeholder to identify the version that is always the latest on timeline
java.util.Optional<Integer>	numParts
long	version

Constructor Summary

Constructors

Constructor and Description
CheckpointInstance(long version)
CheckpointInstance(long version, java.util.Optional<Integer> numParts)
CheckpointInstance(String path)

Method Summary

Modifier and Type	Method and Description
int	compareTo(CheckpointInstance that) Comparison rules: 1.
boolean	equals(Object o)
java.util.List<Path>	getCorrespondingFiles(Path path)
int	hashCode()
String	toString()

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

MAX_VALUE

public static final CheckpointInstance MAX_VALUE

Placeholder to identify the version that is always the latest on timeline

version

public final long version

numParts

public final java.util.Optional<Integer> numParts

Constructor Detail

CheckpointInstance

public CheckpointInstance(String path)

CheckpointInstance

public CheckpointInstance(long version)

CheckpointInstance

public CheckpointInstance(long version,
                          java.util.Optional<Integer> numParts)

Method Detail

getCorrespondingFiles

public java.util.List<Path> getCorrespondingFiles(Path path)

compareTo

public int compareTo(CheckpointInstance that)

Comparison rules: 1. A CheckpointInstance with higher version is greater than the one with lower version. 2. For CheckpointInstances with same version, a Multi-part checkpoint is greater than a Single part checkpoint. 3. For Multi-part CheckpointInstance corresponding to same version, the one with more parts is greater than the one with less parts.

Specified by:

compareTo in interface Comparable<CheckpointInstance>

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object