org.apache.ignite.internal.pagemem

Interface PageIdAllocator

All Known Subinterfaces:

PageMemory, PageMemoryEx

All Known Implementing Classes:

PageMemoryImpl, PageMemoryNoStoreImpl

public interface PageIdAllocator

Allocates page ID's.

Field Summary

Fields

Modifier and Type	Field and Description
static byte	FLAG_DATA
static byte	FLAG_IDX
static int	INDEX_PARTITION Special partition reserved for index space.
static int	MAX_PARTITION_ID Max partition ID that can be used by affinity.
static int	METASTORE_PARTITION Special partition reserved for metastore space.
static int	OLD_METASTORE_PARTITION Old special partition reserved for metastore space.

Method Summary

Modifier and Type	Method and Description
long	allocatePage(int grpId, int partId, byte flags) Allocates a page from the space for the given partition ID and the given flags.
boolean	freePage(int cacheId, long pageId) The given page is free now.

Field Detail

FLAG_DATA

static final byte FLAG_DATA

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Constant Field Values

FLAG_IDX

static final byte FLAG_IDX

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Constant Field Values

MAX_PARTITION_ID

static final int MAX_PARTITION_ID

Max partition ID that can be used by affinity.

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Constant Field Values

INDEX_PARTITION

static final int INDEX_PARTITION

Special partition reserved for index space.

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Constant Field Values

OLD_METASTORE_PARTITION

static final int OLD_METASTORE_PARTITION

Old special partition reserved for metastore space.

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Constant Field Values

METASTORE_PARTITION

static final int METASTORE_PARTITION

Special partition reserved for metastore space.

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Constant Field Values

Method Detail

allocatePage

long allocatePage(int grpId,
                  int partId,
                  byte flags)
           throws IgniteCheckedException

Allocates a page from the space for the given partition ID and the given flags.

Parameters:

grpId - Cache Group ID.

partId - Partition ID.

Returns:

Allocated page ID.

Throws:

IgniteCheckedException

freePage

boolean freePage(int cacheId,
                 long pageId)
          throws IgniteCheckedException

The given page is free now.

Parameters:

cacheId - Cache Group ID.

pageId - Page ID.

Throws:

IgniteCheckedException