jsdsi
Class Obj

java.lang.Object
  jsdsi.Obj

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

Acl, AclEntry, Cert, Hash, Name, ObjectHash, OnlineTest, Op, Principal, Proof, Sequence, Signature, Tag, Threshold, Validity

public abstract class Obj

extends java.lang.Object

implements java.io.Serializable

Common superclass of all SPKI/SDSI objects.

Note: As serialization is performed by writing the object to the the stream as a canonical Sexpression, all subclasses of jsdsi.Obj should declare their fields as transient.

Version:

$Revision: 1.10.2.1 $ $Date: 2005/11/08 03:12:52 $

Author:

Sameer Ajmani, Sean Radford

See Also:

Serialized Form

Field Summary

protected Obj

_obj The replacement SPKI/SDSI object read from the java.io.ObjectInputStream during #readObject(java.io.ObjectInputStream) and to be returned via readResolve().

Constructor Summary

Obj()

Method Summary

abstract boolean	equals(java.lang.Object o)
abstract int	hashCode()
static Obj	parseObj(Sexp s) Parses an S-expression an returns a SDSI object.
static Obj	parseObj(SexpList l) Parses an SexpList an returns a SDSI object.
protected java.lang.Object	readResolve()
byte[]	toByteArray()
abstract SexpList	toSexp() Creates an SexpList -representation from this SDSI-object.
java.lang.String	toString() Returns the S-expression representation of this SPKI/SDSI object in readable form, using the standard S-expression charactrer encoding (8859-1).
java.lang.String	toString(int offset, int width, int last) Returns the S-expression representation of this SPKI/SDSI object in readable form, using the standard S-expression charactrer encoding (8859-1).
byte[]	toTransport() Returns the S-expression representation of this SPKI/SDSI object in transport form.

Methods inherited from class java.lang.Object

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

Field Detail

_obj

protected transient Obj _obj

The replacement SPKI/SDSI object read from the java.io.ObjectInputStream during #readObject(java.io.ObjectInputStream) and to be returned via readResolve().

Constructor Detail

Obj

public Obj()

Method Detail

equals

public abstract boolean equals(java.lang.Object o)

See Also:

Object.equals(java.lang.Object)

hashCode

public abstract int hashCode()

See Also:

Object.hashCode()

toSexp

public abstract SexpList toSexp()

Creates an SexpList -representation from this SDSI-object.

Returns:

an SexpList that represents this SDSI-object.

toString

public java.lang.String toString()

Returns the S-expression representation of this SPKI/SDSI object in readable form, using the standard S-expression charactrer encoding (8859-1).

See Also:

Object.toString()

toString

public java.lang.String toString(int offset,
                                 int width,
                                 int last)

Returns the S-expression representation of this SPKI/SDSI object in readable form, using the standard S-expression charactrer encoding (8859-1).

Parameters:

offset - spaces indented from left.

width - total width of window, in characters.

last - spaces reserved on right (e.g., for closing parens)

Returns:

the S-expression

toTransport

public byte[] toTransport()

Returns the S-expression representation of this SPKI/SDSI object in transport form. If the transport form is required as a java.lang.String, then simply pass the resulting byte[] from this method into Sexp.decodeString(byte[]) (This process is required as S-expression's must use the 8859-1 character encoding).

Returns:

the S-expression

toByteArray

public byte[] toByteArray()

Returns:

an array of bytes with the canonical representation of this SDSI/SPKI object.

readResolve

protected java.lang.Object readResolve()
                                throws java.io.ObjectStreamException

Returns:

the SPKI/SDSI object which is the replacement after serialization.

Throws:

java.io.ObjectStreamException

See Also:

Serializable

parseObj

public static Obj parseObj(Sexp s)
                    throws SexpParseException

Parses an S-expression an returns a SDSI object.

Parameters:

s - the S-expression to parse.

Returns:

a SDSI object stored in s.

Throws:

SexpParseException

parseObj

public static Obj parseObj(SexpList l)
                    throws SexpParseException

Parses an SexpList an returns a SDSI object.

Parameters:

l - the SexpList that stores the SDSI object.

Returns:

a SDSI object stored in l.

Throws:

SexpParseException