Package org.apache.ignite.internal.pagemem.wal.record

Enum WALRecord.RecordPurpose

java.lang.Object

java.lang.Enum<WALRecord.RecordPurpose>

org.apache.ignite.internal.pagemem.wal.record.WALRecord.RecordPurpose

All Implemented Interfaces:

Serializable, Comparable<WALRecord.RecordPurpose>

Enclosing class:

WALRecord

public static enum WALRecord.RecordPurpose
extends Enum<WALRecord.RecordPurpose>

Record purposes set.

Enum Constant Summary

Enum Constants

Enum Constant	Description
CUSTOM	Custom records are needed for any custom iterations over WAL in various components.
INTERNAL	Internal records are needed for correct iterating over WAL structure.
LOGICAL	Logical records are needed to replay logical updates since last checkpoint.
MIXED	Physical-logical records are used both for physical and logical recovery.
PHYSICAL	Physical records are needed for correct recovering physical state of PageMemory.

Method Summary

Modifier and Type	Method	Description
static WALRecord.RecordPurpose	valueOf(String name)	Returns the enum constant of this type with the specified name.
static WALRecord.RecordPurpose[]	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

INTERNAL

public static final WALRecord.RecordPurpose INTERNAL

Internal records are needed for correct iterating over WAL structure. These records will never be returned to user during WAL iteration.

PHYSICAL

public static final WALRecord.RecordPurpose PHYSICAL

Physical records are needed for correct recovering physical state of PageMemory. GridCacheDatabaseSharedManager.restoreBinaryMemory( org.apache.ignite.lang.IgnitePredicate, org.apache.ignite.lang.IgniteBiPredicate).

LOGICAL

public static final WALRecord.RecordPurpose LOGICAL

Logical records are needed to replay logical updates since last checkpoint. GridCacheDatabaseSharedManager.applyLogicalUpdates(CheckpointStatus, org.apache.ignite.lang.IgnitePredicate, org.apache.ignite.lang.IgniteBiPredicate, boolean)

MIXED

public static final WALRecord.RecordPurpose MIXED

Physical-logical records are used both for physical and logical recovery. Usually these records contain meta-information about partitions. NOTE: Not recommend to use this type without strong reason.

CUSTOM

public static final WALRecord.RecordPurpose CUSTOM

Custom records are needed for any custom iterations over WAL in various components.

Method Detail

values

public static WALRecord.RecordPurpose[] 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 (WALRecord.RecordPurpose c : WALRecord.RecordPurpose.values())
    System.out.println(c);

Returns:

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

valueOf

public static WALRecord.RecordPurpose valueOf(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:

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

NullPointerException - if the argument is null