jdbm.recman
Class Magic

java.lang.Object
  jdbm.recman.Magic

public final class Magic
extends Object

This interface contains magic cookies. Final reference -> class shouldn't be extended

Field Summary

static short	BLOCK Magic for blocks.
static short	FILE_HEADER Magic cookie at start of file
static short	FREE_PAGE Magics for block types in certain lists.
static short	FREELOGIDS_PAGE
static short	FREEPHYSIDS_PAGE
static short	LOGFILE_HEADER Magic for transaction file
static long	MAX_BLOCKS Maximum number of blocks in a file, leaving room for a 16 bit offset encoded within a long.
static short	NLISTS Number of lists in a file
static short	SZ_BYTE Size of an externalized byte
static short	SZ_INT Size of an externalized int
static short	SZ_LONG Size of an externalized long
static short	SZ_SHORT Size of an externalized short
static short	TRANSLATION_PAGE
static short	USED_PAGE

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

FILE_HEADER

public static final short FILE_HEADER

Magic cookie at start of file

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Constant Field Values

BLOCK

public static final short BLOCK

Magic for blocks. They're offset by the block type magic codes.

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Constant Field Values

FREE_PAGE

public static final short FREE_PAGE

Magics for block types in certain lists. Offset by baseBlockMagic

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Constant Field Values

USED_PAGE

public static final short USED_PAGE

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Constant Field Values

TRANSLATION_PAGE

public static final short TRANSLATION_PAGE

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Constant Field Values

FREELOGIDS_PAGE

public static final short FREELOGIDS_PAGE

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Constant Field Values

FREEPHYSIDS_PAGE

public static final short FREEPHYSIDS_PAGE

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Constant Field Values

NLISTS

public static final short NLISTS

Number of lists in a file

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Constant Field Values

MAX_BLOCKS

public static final long MAX_BLOCKS

Maximum number of blocks in a file, leaving room for a 16 bit offset encoded within a long.

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Constant Field Values

LOGFILE_HEADER

public static final short LOGFILE_HEADER

Magic for transaction file

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Constant Field Values

SZ_BYTE

public static final short SZ_BYTE

Size of an externalized byte

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SZ_SHORT

public static final short SZ_SHORT

Size of an externalized short

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SZ_INT

public static final short SZ_INT

Size of an externalized int

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Constant Field Values

SZ_LONG

public static final short SZ_LONG

Size of an externalized long

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Constant Field Values