org.apache.ignite.internal.processors.cache.persistence.tree.io

Class CacheVersionIO

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.tree.io.CacheVersionIO

public class CacheVersionIO
extends Object

Utility to read and write GridCacheVersion instances.

Constructor Summary

Constructors

Constructor and Description
CacheVersionIO()

Method Summary

Modifier and Type	Method and Description
static GridCacheVersion	read(ByteBuffer buf, boolean allowNull) Reads GridCacheVersion instance from the given buffer.
static GridCacheVersion	read(long pageAddr, boolean allowNull) Reads GridCacheVersion instance from the given address.
static int	readSize(ByteBuffer buf, boolean allowNull) Gets needed buffer size to read the whole version instance.
static int	readSize(long pageAddr, boolean allowNull) Gets needed buffer size to read the whole version instance.
static int	size(GridCacheVersion ver, boolean allowNull)
static void	write(ByteBuffer buf, GridCacheVersion ver, boolean allowNull)
static void	write(long addr, GridCacheVersion ver, boolean allowNull)

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheVersionIO

public CacheVersionIO()

Method Detail

size

public static int size(GridCacheVersion ver,
                       boolean allowNull)

Parameters:

ver - Version.

allowNull - Is null version allowed.

Returns:

Serialized size in bytes.

write

public static void write(ByteBuffer buf,
                         GridCacheVersion ver,
                         boolean allowNull)

Parameters:

buf - Byte buffer.

ver - Version to write.

allowNull - Is null version allowed.

write

public static void write(long addr,
                         GridCacheVersion ver,
                         boolean allowNull)

Parameters:

addr - Write address.

ver - Version to write.

allowNull - Is null version allowed.

readSize

public static int readSize(ByteBuffer buf,
                           boolean allowNull)
                    throws IgniteCheckedException

Gets needed buffer size to read the whole version instance. Does not change buffer position.

Parameters:

buf - Buffer.

allowNull - Is null version allowed.

Returns:

Size of serialized version.

Throws:

IgniteCheckedException - If failed.

readSize

public static int readSize(long pageAddr,
                           boolean allowNull)
                    throws IgniteCheckedException

Gets needed buffer size to read the whole version instance. Does not change buffer position.

Parameters:

pageAddr - Page address.

allowNull - Is null version allowed.

Returns:

Size of serialized version.

Throws:

IgniteCheckedException - If failed.

read

public static GridCacheVersion read(ByteBuffer buf,
                                    boolean allowNull)
                             throws IgniteCheckedException

Reads GridCacheVersion instance from the given buffer. Moves buffer's position by the number of used bytes.

Parameters:

buf - Byte buffer.

allowNull - Is null version allowed.

Returns:

Version.

Throws:

IgniteCheckedException - If failed.

read

public static GridCacheVersion read(long pageAddr,
                                    boolean allowNull)
                             throws IgniteCheckedException

Reads GridCacheVersion instance from the given address.

Parameters:

pageAddr - Page address.

allowNull - Is null version allowed.

Returns:

Version.

Throws:

IgniteCheckedException - If failed.