org.exist.storage
Class Signatures

java.lang.Object
  org.exist.storage.Signatures

public final class Signatures

extends java.lang.Object

Static methods to deal with the signature of a node stored in the first byte of the node data in the persistent dom.

Field Summary

static int	Attr
static int	ByteContent
static int	Char
static int	Comm
static int	Elem
static int	IntContent
static int	NoContent
static int	Proc
static int	ShortContent

Constructor Summary

Signatures()

Method Summary

static int	getLength(int type) Returns the storage size of the given type as number of bytes required.
static byte	getSizeType(int length) Returns one of IntContent, ShortContent, ByteContent or NoContent based on the number of bytes required to store the integer value given in length.
static short	getType(byte signature) From the signature in byte 0 of the node data, extract the node type and return a constant as defined in Node.
static int	read(int type, byte[] data, int pos)
static void	write(int type, int size, byte[] data, int pos)

Methods inherited from class java.lang.Object

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

Field Detail

Attr

public static final int Attr

See Also:

Constant Field Values

Proc

public static final int Proc

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Constant Field Values

Char

public static final int Char

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Constant Field Values

Comm

public static final int Comm

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Constant Field Values

Elem

public static final int Elem

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Constant Field Values

IntContent

public static final int IntContent

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Constant Field Values

ByteContent

public static final int ByteContent

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Constant Field Values

NoContent

public static final int NoContent

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Constant Field Values

ShortContent

public static final int ShortContent

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Constant Field Values

Constructor Detail

Signatures

public Signatures()

Method Detail

getLength

public static final int getLength(int type)

Returns the storage size of the given type as number of bytes required.

getSizeType

public static final byte getSizeType(int length)

Returns one of IntContent, ShortContent, ByteContent or NoContent based on the number of bytes required to store the integer value given in length.

getType

public static final short getType(byte signature)

From the signature in byte 0 of the node data, extract the node type and return a constant as defined in Node.

read

public static final int read(int type,
                             byte[] data,
                             int pos)

write

public static final void write(int type,
                               int size,
                               byte[] data,
                               int pos)