Package com.orientechnologies.orient.core.storage.index.sbtreebonsai.local

Class OBonsaiBucketAbstract

java.lang.Object

com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

com.orientechnologies.orient.core.storage.index.sbtreebonsai.local.OBonsaiBucketAbstract

Direct Known Subclasses:

OSBTreeBonsaiBucket, OSysBucket

public class OBonsaiBucketAbstract
extends ODurablePage

A base class for bonsai buckets. Bonsai bucket size is usually less than page size and one page could contain multiple bonsai buckets.

Adds methods to read and write bucket pointers.

Author:

Artem Orobets (enisher-at-gmail.com)

See Also:

• OBonsaiBucketPointer
• OSBTreeBonsai

Field Summary

Fields inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

CRC32_OFFSET, MAGIC_NUMBER_OFFSET, MAX_PAGE_SIZE_BYTES, NEXT_FREE_POSITION, WAL_POSITION_OFFSET, WAL_SEGMENT_OFFSET

Constructor Summary

Constructors

Constructor	Description
OBonsaiBucketAbstract(OCacheEntry cacheEntry)

Method Summary

Modifier and Type	Method	Description
protected OBonsaiBucketPointer	getBucketPointer(int offset)	Read bucket pointer from page.
protected void	setBucketPointer(int pageOffset, OBonsaiBucketPointer value)	Write a bucket pointer to specific location.

Methods inherited from class com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage

deserializeFromDirectMemory, getBinaryValue, getByteValue, getCacheEntry, getChanges, getIntArray, getIntValue, getLogSequenceNumber, getLogSequenceNumberFromPage, getLongValue, getLSN, getObjectSizeInDirectMemory, getPageData, getPageIndex, getShortValue, moveData, restoreChanges, setBinaryValue, setByteValue, setIntArray, setIntValue, setLongValue, setLsn, setShortValue, toString

Methods inherited from class java.lang.Object

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

Constructor Details

OBonsaiBucketAbstract

public OBonsaiBucketAbstract(OCacheEntry cacheEntry)

Method Details

setBucketPointer

protected void setBucketPointer(int pageOffset,
 OBonsaiBucketPointer value)
                         throws IOException

Write a bucket pointer to specific location.

Parameters:

pageOffset - where to write

value - - pointer to write

Throws:

IOException

getBucketPointer

protected OBonsaiBucketPointer getBucketPointer(int offset)

Read bucket pointer from page.

Parameters:

offset - where the pointer should be read from

Returns:

bucket pointer