org.apache.poi.hpsf
Class ClassID

java.lang.Object
  org.apache.poi.hpsf.ClassID

public class ClassID
extends java.lang.Object

Represents a class ID (16 bytes). Unlike other little-endian type the ClassID is not just 16 bytes stored in the wrong order. Instead, it is a double word (4 bytes) followed by two words (2 bytes each) followed by 8 bytes.

Author:

Rainer Klute <klute@rainer-klute.de>

Field Summary

protected byte[]	bytes The bytes making out the class ID in correct order, i.e.
static int	LENGTH The number of bytes occupied by this object in the byte stream.

Constructor Summary

ClassID()
Creates a ClassID and initializes its value with 0x00 bytes.

ClassID(byte[] src, int offset)
Creates a ClassID and reads its value from a byte array.

Method Summary

boolean	equals(java.lang.Object o) Checks whether this ClassID is equal to another object.
byte[]	getBytes() Gets the bytes making out the class ID.
int	hashCode()
int	length()
byte[]	read(byte[] src, int offset) Reads the class ID's value from a byte array by turning little-endian into big-endian.
void	setBytes(byte[] bytes) Sets the bytes making out the class ID.
java.lang.String	toString() Returns a human-readable representation of the Class ID in standard format "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}".
void	write(byte[] dst, int offset) Writes the class ID to a byte array in the little-endian format.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

bytes

protected byte[] bytes

The bytes making out the class ID in correct order, i.e. big-endian.

LENGTH

public static final int LENGTH

The number of bytes occupied by this object in the byte stream.

See Also:

Constant Field Values

Constructor Detail

ClassID

public ClassID(byte[] src,
               int offset)

Creates a ClassID and reads its value from a byte array.

Parameters:

src - The byte array to read from.

offset - The offset of the first byte to read.

ClassID

public ClassID()

Creates a ClassID and initializes its value with 0x00 bytes.

Method Detail

length

public int length()

Returns:

The number of bytes occupied by this object in the byte stream.

getBytes

public byte[] getBytes()

Gets the bytes making out the class ID. They are returned in correct order, i.e. big-endian.

Returns:

the bytes making out the class ID.

setBytes

public void setBytes(byte[] bytes)

Sets the bytes making out the class ID.

Parameters:

bytes - The bytes making out the class ID in big-endian format. They are copied without their order being changed.

read

public byte[] read(byte[] src,
                   int offset)

Reads the class ID's value from a byte array by turning little-endian into big-endian.

Parameters:

src - The byte array to read from

offset - The offset within the src byte array

Returns:

A byte array containing the class ID.

write

public void write(byte[] dst,
                  int offset)
           throws java.lang.ArrayStoreException

Writes the class ID to a byte array in the little-endian format.

Parameters:

dst - The byte array to write to.

offset - The offset within the dst byte array.

Throws:

java.lang.ArrayStoreException - if there is not enough room for the class ID 16 bytes in the byte array after the offset position.

equals

public boolean equals(java.lang.Object o)

Checks whether this ClassID is equal to another object.

Overrides:

equals in class java.lang.Object

Parameters:

o - the object to compare this PropertySet with

Returns:

true if the objects are equal, else false.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

See Also:

Object.hashCode()

toString

public java.lang.String toString()

Returns a human-readable representation of the Class ID in standard format "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}".

Overrides:

toString in class java.lang.Object

Returns:

String representation of the Class ID represented by this object.