nl.renarj.jasdb.index.btreeplus

Class BtreeIndexHeader

java.lang.Object

nl.renarj.jasdb.index.btreeplus.BtreeIndexHeader

All Implemented Interfaces:

IndexHeader

public class BtreeIndexHeader
extends Object
implements IndexHeader

Author:

Renze de Vries

Field Summary

Fields

Modifier and Type	Field and Description
static int	BTREE_INDEX_TYPE_ID

Constructor Summary

Constructors

Constructor and Description
BtreeIndexHeader(int indexVersion, int pageSize, int headerSize, KeyInfo keyInfo, long count)

Method Summary

Modifier and Type	Method and Description
long	count()
static IndexHeader	createHeader(DataBlock headerBlock, int pageSize, long count, KeyInfo keyInfo)
int	getHeaderSize()
int	getIndexVersion()
KeyInfo	getKeyInfo()
int	getPageSize()
static IndexHeader	loadAndValidateHeader(DataBlock dataBlock, KeyInfo keyInfo)

Methods inherited from class java.lang.Object

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

Field Detail

BTREE_INDEX_TYPE_ID

public static final int BTREE_INDEX_TYPE_ID

See Also:

Constant Field Values

Constructor Detail

BtreeIndexHeader

public BtreeIndexHeader(int indexVersion,
                        int pageSize,
                        int headerSize,
                        KeyInfo keyInfo,
                        long count)

Method Detail

loadAndValidateHeader

public static IndexHeader loadAndValidateHeader(DataBlock dataBlock,
                                                KeyInfo keyInfo)
                                         throws JasDBStorageException,
                                                IOException

Throws:

JasDBStorageException

IOException

createHeader

public static IndexHeader createHeader(DataBlock headerBlock,
                                       int pageSize,
                                       long count,
                                       KeyInfo keyInfo)
                                throws JasDBStorageException,
                                       IOException

Throws:

JasDBStorageException

IOException

count

public long count()

Specified by:

count in interface IndexHeader

getKeyInfo

public KeyInfo getKeyInfo()

Specified by:

getKeyInfo in interface IndexHeader

getIndexVersion

public int getIndexVersion()

Specified by:

getIndexVersion in interface IndexHeader

getPageSize

public int getPageSize()

Specified by:

getPageSize in interface IndexHeader

getHeaderSize

public int getHeaderSize()

Specified by:

getHeaderSize in interface IndexHeader