Package com._1c.g5.v8.xmdb.impl

Class CompactLink

java.lang.Object

com._1c.g5.v8.xmdb.impl.CompactLink

public class CompactLink
extends Object

Compact link library. Compact link - link with 8 bytes: - 24 bit - allocated space in pages, - 36 bit - start page index - 4 bit - flags

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DATA_IN_LINK
static final long	EMPTY_LINK
static final int	EXTENDED
static final int	LINK_SIZE

Constructor Summary

Constructors

Constructor	Description
CompactLink()

Method Summary

Modifier and Type	Method	Description
static long	compactLink(byte[] data)	Write data into ling (<=7 byte)
static long	compactLink(long startPageIndex, int allocatedPages, boolean extended)	Compile compact link from
static long	compactLink(ByteBuffer bb)
static final int	getAllocatedPages(long compactLink)
static final long	getStartPageIndex(long compactLink)
static final boolean	isDataInLink(long compactLink)
static final boolean	isEmptyLink(long compactLink)
static final boolean	isExtendedInLink(long compactLink)
static byte[]	unpackLinkData(long compactLink)
static ByteBuffer	unpackLinkData2(long compactLink)

Methods inherited from class java.lang.Object

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

Field Details

EMPTY_LINK

public static final long EMPTY_LINK

See Also:

• Constant Field Values

DATA_IN_LINK

public static final int DATA_IN_LINK

See Also:

• Constant Field Values

EXTENDED

public static final int EXTENDED

See Also:

• Constant Field Values

LINK_SIZE

public static final int LINK_SIZE

See Also:

• Constant Field Values

Constructor Details

CompactLink

public CompactLink()

Method Details

getStartPageIndex

public static final long getStartPageIndex(long compactLink)

getAllocatedPages

public static final int getAllocatedPages(long compactLink)

isDataInLink

public static final boolean isDataInLink(long compactLink)

isExtendedInLink

public static final boolean isExtendedInLink(long compactLink)

isEmptyLink

public static final boolean isEmptyLink(long compactLink)

compactLink

public static long compactLink(ByteBuffer bb)

compactLink

public static long compactLink(byte[] data)

Write data into ling (<=7 byte)

Parameters:

data -

Returns:

unpackLinkData

public static byte[] unpackLinkData(long compactLink)

unpackLinkData2

public static ByteBuffer unpackLinkData2(long compactLink)

compactLink

public static long compactLink(long startPageIndex,
 int allocatedPages,
 boolean extended)

Compile compact link from

Parameters:

startPageIndex - start page index

allocatedPages - allocated pages

requiredBytes - required bytes

extended - flag - has next record of data block

Returns:

clink