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

Class BPlusMetaIO

java.lang.Object

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

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

public class BPlusMetaIO
extends PageIO

IO routines for B+Tree meta pages.

Field Summary

Fields

Modifier and Type	Field	Description
static long	DEFAULT_FLAGS
static IOVersions<BPlusMetaIO>	VERSIONS

Fields inherited from class org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO

COMMON_HEADER_END, CRC_OFF, MAX_PAYLOAD_SIZE, PAGE_ID_OFF, ROTATED_ID_PART_OFF, T_BPLUS_META, T_CACHE_ID_AWARE_DATA_REF_INNER, T_CACHE_ID_AWARE_DATA_REF_LEAF, T_CACHE_ID_AWARE_PENDING_REF_INNER, T_CACHE_ID_AWARE_PENDING_REF_LEAF, T_DATA, T_DATA_METASTORAGE, T_DATA_PART, T_DATA_REF_INNER, T_DATA_REF_LEAF, T_DATA_REF_METASTORAGE_INNER, T_DATA_REF_METASTORAGE_LEAF, T_DEFRAG_LINK_MAPPING_INNER, T_DEFRAG_LINK_MAPPING_LEAF, T_H2_EX_REF_INNER_END, T_H2_EX_REF_INNER_START, T_H2_EX_REF_LEAF_END, T_H2_EX_REF_LEAF_START, T_H2_REF_INNER, T_H2_REF_LEAF, T_MARKER_PAGE, T_META, T_METASTORE_INNER, T_METASTORE_LEAF, T_PAGE_LIST_META, T_PAGE_LIST_NODE, T_PAGE_UPDATE_TRACKING, T_PART_CNTRS, T_PART_META, T_PENDING_REF_INNER, T_PENDING_REF_LEAF, TYPE_OFF, VER_OFF

Method Summary

Modifier and Type	Method	Description
void	addRoot(long pageAddr, long rootPageId, int pageSize)
IgniteProductVersion	createdVersion(long pageAddr)
void	cutRoot(long pageAddr, int pageSize)
long	getFirstPageId(long pageAddr, int lvl)
int	getFreeSpace(int pageSize, long pageAddr)	Count of bytes that is currently free in this page and possibly can be used to place additional payload.
int	getInlineSize(long pageAddr)
int	getLevelsCount(long pageAddr)
int	getMaxLevels(long pageAddr, int pageSize)
int	getRootLevel(long pageAddr)
void	initFlagsAndVersion(long pageAddr, long flags, IgniteProductVersion createdVer)
void	initRoot(long pageAdrr, long rootId, int pageSize)
boolean	inlineObjectHash(long pageAddr)	Whether Java objects should be inlined as hash or as bytes array.
boolean	inlineObjectSupported(long pageAddr)
protected void	printPage(long addr, int pageSize, GridStringBuilder sb)
void	setCreatedVersion(long pageAddr, IgniteProductVersion curVer)
void	setFlags(long pageAddr, boolean unwrappedPk, boolean inlineObjSupported, boolean inlineObjHash)
void	setInlineSize(long pageAddr, int size)
static void	setValues(long pageAddr, int inlineSize, boolean unwrappedPk, boolean inlineObjSupported, boolean inlineObjHash)	Set meta page values.
boolean	supportFlags()
boolean	unwrappedPk(long pageAddr)
static void	upgradePageVersion(long pageAddr, boolean inlineObjSupported, boolean unwrappedPk, int pageSize)

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO

assertPageType, assertPageType, copyPage, deriveIndexPageType, getBPlusIO, getBPlusIO, getCompactedSize, getCompactedSize, getCompressedSize, getCompressedSize, getCompressionType, getCompressionType, getCrc, getCrc, getInnerVersions, getLeafVersions, getPageId, getPageId, getPageIO, getPageIO, getPageIO, getRotatedIdPart, getType, getType, getType, getVersion, getVersion, getVersion, initNewPage, isDataPageType, isIndexPage, printPage, registerH2, registerH2ExtraInner, registerH2ExtraLeaf, registerTest, registerTest, setCompactedSize, setCompressedSize, setCompressionType, setCrc, setCrc, setPageId, setRotatedIdPart, setType, setVersion, toString

Methods inherited from class java.lang.Object

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

Field Detail

VERSIONS

public static final IOVersions<BPlusMetaIO> VERSIONS

DEFAULT_FLAGS

public static final long DEFAULT_FLAGS

See Also:

Constant Field Values

Method Detail

initRoot

public void initRoot(long pageAdrr,
                     long rootId,
                     int pageSize)

Parameters:

pageAdrr - Page address.

rootId - Root page ID.

pageSize - Page size.

getLevelsCount

public int getLevelsCount(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

Number of levels in this tree.

getMaxLevels

public int getMaxLevels(long pageAddr,
                        int pageSize)

Parameters:

pageAddr - Page address.

pageSize - Page size.

Returns:

Max levels possible for this page size.

getFirstPageId

public long getFirstPageId(long pageAddr,
                           int lvl)

Parameters:

pageAddr - Page address.

lvl - Level.

Returns:

First page ID at that level.

getRootLevel

public int getRootLevel(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

Root level.

addRoot

public void addRoot(long pageAddr,
                    long rootPageId,
                    int pageSize)

Parameters:

pageAddr - Page address.

rootPageId - New root page ID.

pageSize - Page size.

cutRoot

public void cutRoot(long pageAddr,
                    int pageSize)

Parameters:

pageAddr - Page address.

pageSize - Page size.

setInlineSize

public void setInlineSize(long pageAddr,
                          int size)

Parameters:

pageAddr - Page address.

size - Offset size.

getInlineSize

public int getInlineSize(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

Inline size.

unwrappedPk

public boolean unwrappedPk(long pageAddr)

Returns:

true In case use unwrapped PK.

inlineObjectSupported

public boolean inlineObjectSupported(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

true In case inline object is supported by the tree.

inlineObjectHash

public boolean inlineObjectHash(long pageAddr)

Whether Java objects should be inlined as hash or as bytes array.

Parameters:

pageAddr - Page address.

supportFlags

public boolean supportFlags()

Returns:

true If flags are supported.

initFlagsAndVersion

public void initFlagsAndVersion(long pageAddr,
                                long flags,
                                IgniteProductVersion createdVer)

Parameters:

pageAddr - Page address.

flags - Flags.

createdVer - The version of the product that creates the page (b+tree).

setCreatedVersion

public void setCreatedVersion(long pageAddr,
                              IgniteProductVersion curVer)

Parameters:

pageAddr - Page address.

curVer - Ignite current version.

createdVersion

public IgniteProductVersion createdVersion(long pageAddr)

Parameters:

pageAddr - Page address.

Returns:

The version of product that creates the page.

setFlags

public void setFlags(long pageAddr,
                     boolean unwrappedPk,
                     boolean inlineObjSupported,
                     boolean inlineObjHash)

Parameters:

pageAddr - Page address.

unwrappedPk - unwrapped primary key of this tree flag.

inlineObjSupported - inline POJO by created tree flag.

inlineObjHash - Whether Java objects should be inlined as hash or as bytes array.

printPage

protected void printPage(long addr,
                         int pageSize,
                         GridStringBuilder sb)
                  throws IgniteCheckedException

Specified by:

printPage in class PageIO

Parameters:

addr - Address.

pageSize - Page size.

sb - Sb.

Throws:

IgniteCheckedException

getFreeSpace

public int getFreeSpace(int pageSize,
                        long pageAddr)

Count of bytes that is currently free in this page and possibly can be used to place additional payload.

Specified by:

getFreeSpace in class PageIO

Parameters:

pageSize - Page size.

pageAddr - Page address.

Returns:

Free space.

upgradePageVersion

public static void upgradePageVersion(long pageAddr,
                                      boolean inlineObjSupported,
                                      boolean unwrappedPk,
                                      int pageSize)

Parameters:

pageAddr - Page address.

inlineObjSupported - Supports inline object flag.

unwrappedPk - Unwrap PK flag.

pageSize - Page size.

setValues

public static void setValues(long pageAddr,
                             int inlineSize,
                             boolean unwrappedPk,
                             boolean inlineObjSupported,
                             boolean inlineObjHash)

Set meta page values.

Parameters:

pageAddr - Page address.

inlineSize - Inline size.

unwrappedPk - Unwrap PK flag.

inlineObjSupported - Supports inline object flag.

inlineObjHash - Supports inline object hash flag.