Package org.projectnessie.versioned.persist.adapter

Enum CommitLogEntry.KeyListVariant

java.lang.Object

java.lang.Enum<CommitLogEntry.KeyListVariant>

org.projectnessie.versioned.persist.adapter.CommitLogEntry.KeyListVariant

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<CommitLogEntry.KeyListVariant>

Enclosing interface:

CommitLogEntry

public static enum CommitLogEntry.KeyListVariant
extends java.lang.Enum<CommitLogEntry.KeyListVariant>

Enum Constant Summary

Enum Constants

Enum Constant	Description
EMBEDDED_AND_EXTERNAL_MRU	The variant in which Nessie versions 0.10.0..0.30.0 write embedded key-list and key-list entities.
OPEN_ADDRESSING	The variant in which Nessie versions since 0.31.0 maintains embedded key-list and key-list entities.

Method Summary

Modifier and Type	Method	Description
static CommitLogEntry.KeyListVariant	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static CommitLogEntry.KeyListVariant[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

EMBEDDED_AND_EXTERNAL_MRU

public static final CommitLogEntry.KeyListVariant EMBEDDED_AND_EXTERNAL_MRU

The variant in which Nessie versions 0.10.0..0.30.0 write embedded key-list and key-list entities.

Most recently updated KeyListEntrys appear first.

The embedded key-list is filled first up to DatabaseAdapterConfig.getMaxKeyListSize(), more KeyListEntrys are written to "external"key-list entities with their IDs in CommitLogEntry.getKeyListsIds().

OPEN_ADDRESSING

public static final CommitLogEntry.KeyListVariant OPEN_ADDRESSING

The variant in which Nessie versions since 0.31.0 maintains embedded key-list and key-list entities.

KeyListEntrys are maintained as an open-addressing hash map with ContentKey as the map key.

That open-addressing hash map is split into multiple segments, if necessary.

The first segment is represented by the embedded key-list with a serialized size goal up to DatabaseAdapterConfig.getMaxKeyListSize(). All following segments have a serialized size up to DatabaseAdapterConfig.getMaxKeyListEntitySize() as the goal.

Maximum size constraints are fulfilled using a best-effort approach.

Method Detail

values

public static CommitLogEntry.KeyListVariant[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (CommitLogEntry.KeyListVariant c : CommitLogEntry.KeyListVariant.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CommitLogEntry.KeyListVariant valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null