com.orientechnologies.orient.core.storage.impl.local.paginated.wal.common

Class CASWALPage

java.lang.Object

com.orientechnologies.orient.core.storage.impl.local.paginated.wal.common.CASWALPage

public final class CASWALPage
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_RECORD_SIZE
static int	DEFAULT_PAGE_SIZE
static long	MAGIC_NUMBER
static int	MAGIC_NUMBER_OFFSET Offset of magic number value.
static long	MAGIC_NUMBER_WITH_ENCRYPTION
static int	PAGE_SIZE_OFFSET
static int	RECORDS_OFFSET
static int	XX_OFFSET Offset of position which stores CRC32 value of content stored on this page.

Constructor Summary

Constructors

Constructor and Description
CASWALPage()

Method Summary

Modifier and Type	Method and Description
static int	calculateSerializedSize(int recordSize) Calculates how much space record will consume once it will be stored inside of page.

Methods inherited from class java.lang.Object

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

Field Detail

MAGIC_NUMBER

public static final long MAGIC_NUMBER

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Constant Field Values

MAGIC_NUMBER_WITH_ENCRYPTION

public static final long MAGIC_NUMBER_WITH_ENCRYPTION

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Constant Field Values

MAGIC_NUMBER_OFFSET

public static final int MAGIC_NUMBER_OFFSET

Offset of magic number value. Randomly generated constant which is used to identify whether page is broken on disk and version of binary format is used to store page.

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Constant Field Values

XX_OFFSET

public static final int XX_OFFSET

Offset of position which stores CRC32 value of content stored on this page.

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Constant Field Values

PAGE_SIZE_OFFSET

public static final int PAGE_SIZE_OFFSET

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Constant Field Values

DEFAULT_PAGE_SIZE

public static final int DEFAULT_PAGE_SIZE

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Constant Field Values

RECORDS_OFFSET

public static final int RECORDS_OFFSET

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Constant Field Values

DEFAULT_MAX_RECORD_SIZE

public static final int DEFAULT_MAX_RECORD_SIZE

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Constant Field Values

Constructor Detail

CASWALPage

public CASWALPage()

Method Detail

calculateSerializedSize

public static int calculateSerializedSize(int recordSize)

Calculates how much space record will consume once it will be stored inside of page. Sizes are different because once record is stored inside of the page, it is wrapped by additional system information.