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

Class BPlusLeafIO<L>

java.lang.Object

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

org.apache.ignite.internal.processors.cache.persistence.tree.io.BPlusIO<L>

org.apache.ignite.internal.processors.cache.persistence.tree.io.BPlusLeafIO<L>

Direct Known Subclasses:

AbstractDataLeafIO, AbstractPendingEntryLeafIO, IndexStorageImpl.MetaStoreLeafIO, MetastorageTree.MetastoreLeafIO, TxLogLeafIO

public abstract class BPlusLeafIO<L>
extends BPlusIO<L>

Abstract IO routines for B+Tree leaf pages.

Field Summary

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

ITEMS_OFF, itemSize

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_CACHE_ID_DATA_REF_MVCC_INNER, T_CACHE_ID_DATA_REF_MVCC_LEAF, T_DATA, T_DATA_METASTORAGE, T_DATA_REF_INNER, T_DATA_REF_LEAF, T_DATA_REF_METASTORAGE_INNER, T_DATA_REF_METASTORAGE_LEAF, T_DATA_REF_MVCC_INNER, T_DATA_REF_MVCC_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_EX_REF_MVCC_INNER_END, T_H2_EX_REF_MVCC_INNER_START, T_H2_EX_REF_MVCC_LEAF_END, T_H2_EX_REF_MVCC_LEAF_START, T_H2_MVCC_REF_INNER, T_H2_MVCC_REF_LEAF, T_H2_REF_INNER, T_H2_REF_LEAF, 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, T_TX_LOG_INNER, T_TX_LOG_LEAF, TYPE_OFF, VER_OFF

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BPlusLeafIO(int type, int ver, int itemSize)

Method Summary

Modifier and Type	Method and Description
void	copyItems(long srcPageAddr, long dstPageAddr, int srcIdx, int dstIdx, int cnt, boolean cpLeft) Copy items from source page to destination page.
int	getMaxCount(long pageAddr, int pageSize)
int	offset(int idx)

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

canGetRow, getCount, getForward, getItemSize, getLookupRow, getRemoveId, initNewPage, insert, isLeaf, merge, printPage, remove, setCount, setForward, setRemoveId, splitExistingPage, splitForwardPage, store, store, storeByOffset, visit

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

getBPlusIO, getBPlusIO, getCrc, getCrc, getInnerVersions, getLeafVersions, getPageId, getPageId, getPageIO, getPageIO, getRotatedIdPart, getType, getType, getType, getVersion, getVersion, getVersion, isDataPageType, printPage, registerH2, registerH2ExtraInner, registerH2ExtraLeaf, registerTest, setCrc, setCrc, setPageId, setRotatedIdPart, setType, setVersion, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BPlusLeafIO

protected BPlusLeafIO(int type,
                      int ver,
                      int itemSize)

Parameters:

type - Page type.

ver - Page format version.

itemSize - Single item size on page.

Method Detail

getMaxCount

public int getMaxCount(long pageAddr,
                       int pageSize)

Specified by:

getMaxCount in class BPlusIO<L>

Parameters:

pageAddr - Page address.

pageSize - Page size without encryption overhead.

Returns:

Max items count.

copyItems

public final void copyItems(long srcPageAddr,
                            long dstPageAddr,
                            int srcIdx,
                            int dstIdx,
                            int cnt,
                            boolean cpLeft)
                     throws IgniteCheckedException

Copy items from source page to destination page. Both pages must be of the same type and the same version.

Specified by:

copyItems in class BPlusIO<L>

Parameters:

srcPageAddr - Source page address.

dstPageAddr - Destination page address.

srcIdx - Source begin index.

dstIdx - Destination begin index.

cnt - Items count.

cpLeft - Copy leftmost link (makes sense only for inner pages).

Throws:

IgniteCheckedException - If failed.

offset

public final int offset(int idx)

Specified by:

offset in class BPlusIO<L>

Parameters:

idx - Index of element.

Returns:

Offset from byte buffer begin in bytes.