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Schema for Representing Java(tm) Objects in an LDAP Directory
RFC 2713

Document Type RFC - Informational (October 1999)
Was draft-ryan-java-schema (individual)
Authors Scott Seligman , Rosanna Lee , Vincent Ryan
Last updated 2013-03-02
RFC stream Legacy stream
Formats
IESG Responsible AD (None)
Send notices to (None)
RFC 2713
#x27;Directory String' and its case is
   significant.  It can contain multiple values.

       ( 1.3.6.1.4.1.42.2.27.4.1.11
         NAME 'javaReferenceAddress'
         DESC 'Addresses associated with a JNDI Reference'
         EQUALITY caseExactMatch
         SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
       )

3.7 javaDoc

   This attribute stores a pointer to the Java documentation for the
   class.  It's value is a URL. For example, the following URL points to
   the specification of the java.lang.String class:
   http://java.sun.com/products/jdk/1.2/docs/api/java/lang/String.html

   This attribute's syntax is 'IA5 String' and its case is significant.

       ( 1.3.6.1.4.1.42.2.27.4.1.12
         NAME 'javaDoc'
         DESC 'The Java documentation for the class'
         EQUALITY caseExactIA5Match
         SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
       )

Ryan, et al.                 Informational                     [Page 13]
RFC 2713                Schema for Java Objects             October 1999

4 Object Class Definitions

   The following object classes are defined in this document:

       javaContainer
       javaObject
       javaSerializedObject
       javaMarshalledObject
       javaNamingReference

4.1 javaContainer

   This structural object class represents a container for a Java
   object.

       ( 1.3.6.1.4.1.42.2.27.4.2.1
         NAME 'javaContainer'
         DESC 'Container for a Java object'
         SUP top
         STRUCTURAL
         MUST ( cn )
       )

4.2 javaObject

   This abstract object class represents a Java object.  A javaObject
   cannot exist in the directory; only auxiliary or structural
   subclasses of it can exist in the directory.

       ( 1.3.6.1.4.1.42.2.27.4.2.4
         NAME 'javaObject'
         DESC 'Java object representation'
         SUP top
         ABSTRACT
         MUST ( javaClassName )
         MAY ( javaClassNames $
               javaCodebase $
               javaDoc $
               description )
       )

Ryan, et al.                 Informational                     [Page 14]
RFC 2713                Schema for Java Objects             October 1999

4.3 javaSerializedObject

   This auxiliary object class represents a Java serialized object.  It
   must be mixed in with a structural object class.

       ( 1.3.6.1.4.1.42.2.27.4.2.5
         NAME 'javaSerializedObject'
         DESC 'Java serialized object'
         SUP javaObject
         AUXILIARY
         MUST ( javaSerializedData )
       )

4.4 javaMarshalledObject

   This auxiliary object class represents a Java marshalled object.  It
   must be mixed in with a structural object class.

       ( 1.3.6.1.4.1.42.2.27.4.2.8
         NAME 'javaMarshalledObject'
         DESC 'Java marshalled object'
         SUP javaObject
         AUXILIARY
         MUST ( javaSerializedData )
       )

4.5 javaNamingReference

   This auxiliary object class represents a JNDI reference.  It must be
   mixed in with a structural object class.

       ( 1.3.6.1.4.1.42.2.27.4.2.7
         NAME 'javaNamingReference'
         DESC 'JNDI reference'
         SUP javaObject
         AUXILIARY
         MAY ( javaReferenceAddress $
               javaFactory )
       )

Ryan, et al.                 Informational                     [Page 15]
RFC 2713                Schema for Java Objects             October 1999

5. Security Considerations

   Serializing an object and storing it into the directory enables (a
   copy of) the object to be examined and used outside the environment
   in which it was originally created.  The directory entry containing
   the serialized object could be read and modified within the
   constraints imposed by the access control mechanisms of the
   directory.  If an object contains sensitive information or
   information that could be misused outside of the context in which it
   was created, the object should not be stored in the directory.  For
   more details on security issues relating to serialization in general,
   see [Serial].

6. Acknowledgements

   We would like to thank Joseph Fialli, Peter Jones, Roger Riggs, Bob
   Scheifler, and Ann Wollrath of Sun Microsystems for their comments
   and suggestions.

7. References

   [CORBA]      The Object Management Group, "Common Object Request
                Broker Architecture Specification 2.0,"
                http://www.omg.org

   [CORBA-LDAP] Ryan, V., Lee, R. and S. Seligman, "Schema for
                Representing CORBA Object References in an LDAP
                Directory", RFC 2714, October 1999.

   [Java]       Ken Arnold and James Gosling, "The Java(tm) Programming
                Language," Second Edition, ISBN 0-201-31006-6.

   [JNDI]       Java Software, Sun Microsystems, Inc., "The Java(tm)
                Naming and Directory Interface (tm) Specification,"
                February 1998.  http://java.sun.com/products/jndi/

   [LDAPv3]     Wahl, M., Howes, T. and  S. Kille, "Lightweight
                Directory Access Protocol (v3)", RFC 2251, December
                1997.

   [RMI]        Java Software, Sun Microsystems, Inc., "Remote Method
                Invocation," November 1998.
                http://java.sun.com/products/jdk/1.2/docs/guide/rmi

Ryan, et al.                 Informational                     [Page 16]
RFC 2713                Schema for Java Objects             October 1999

   [RMI-IIOP]   IBM and Java Software, Sun Microsystems, Inc., "RMI over
                IIOP", June 1999.
                http://java.sun.com/products/rmi-iiop/

   [Serial]     Java Software, Sun Microsystems, Inc., "Object
                Serialization Specification," November 1998.
                http://java.sun.com/products/jdk/1.2/docs/guide/
                serialization

   [v3Schema]   Wahl, M., "A Summary of the X.500(96) User Schema for
                use with LDAPv3", RFC 2256, December 1997.

8. Authors' Addresses

   Vincent Ryan
   Sun Microsystems, Inc.
   Mail Stop EDUB03
   901 San Antonio Road
   Palo Alto, CA 94303
   USA

   Phone: +353 1 819 9151
   EMail: vincent.ryan@ireland.sun.com

   Scott Seligman
   Sun Microsystems, Inc.
   Mail Stop UCUP02-209
   901 San Antonio Road
   Palo Alto, CA 94303
   USA

   Phone: +1 408 863 3222
   EMail: scott.seligman@eng.sun.com

   Rosanna Lee
   Sun Microsystems, Inc.
   Mail Stop UCUP02-206
   901 San Antonio Road
   Palo Alto, CA 94303
   USA

   Phone: +1 408 863 3221
   EMail: rosanna.lee@eng.sun.com

Ryan, et al.                 Informational                     [Page 17]
RFC 2713                Schema for Java Objects             October 1999

Appendix - LDAP Schema

  -- Attribute types --

  ( 1.3.6.1.4.1.42.2.27.4.1.6
    NAME 'javaClassName'
    DESC 'Fully qualified name of distinguished Java class or interface'
    EQUALITY caseExactMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
    SINGLE-VALUE
  )

  ( 1.3.6.1.4.1.42.2.27.4.1.7
    NAME 'javaCodebase'
    DESC 'URL(s) specifying the location of class definition'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
  )

  ( 1.3.6.1.4.1.42.2.27.4.1.8
    NAME 'javaSerializedData'
    DESC 'Serialized form of a Java object'
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.40
    SINGLE-VALUE
  )

  ( 1.3.6.1.4.1.42.2.27.4.1.10
    NAME 'javaFactory'
    DESC 'Fully qualified Java class name of a JNDI object factory'
    EQUALITY caseExactMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
    SINGLE-VALUE
  )

  ( 1.3.6.1.4.1.42.2.27.4.1.11
    NAME 'javaReferenceAddress'
    DESC 'Addresses associated with a JNDI Reference'
    EQUALITY caseExactMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
  )

  ( 1.3.6.1.4.1.42.2.27.4.1.12
    NAME 'javaDoc'
    DESC 'The Java documentation for the class'
    EQUALITY caseExactIA5Match
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
  )

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RFC 2713                Schema for Java Objects             October 1999

  ( 1.3.6.1.4.1.42.2.27.4.1.13
    NAME 'javaClassNames'
    DESC 'Fully qualified Java class or interface name'
    EQUALITY caseExactMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
  )

  -- from RFC-2256 --

  ( 2.5.4.13
    NAME 'description'
    EQUALITY caseIgnoreMatch
    SUBSTR caseIgnoreSubstringsMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{1024}
  )

  -- Object classes --

  ( 1.3.6.1.4.1.42.2.27.4.2.1
    NAME 'javaContainer'
    DESC 'Container for a Java object'
    SUP top
    STRUCTURAL
    MUST ( cn )
  )

  ( 1.3.6.1.4.1.42.2.27.4.2.4
    NAME 'javaObject'
    DESC 'Java object representation'
    SUP top
    ABSTRACT
    MUST ( javaClassName )
    MAY ( javaClassNames $ javaCodebase $ javaDoc $ description )
  )

  ( 1.3.6.1.4.1.42.2.27.4.2.5
    NAME 'javaSerializedObject'
    DESC 'Java serialized object'
    SUP javaObject
    AUXILIARY
    MUST ( javaSerializedData )
  )

Ryan, et al.                 Informational                     [Page 19]
RFC 2713                Schema for Java Objects             October 1999

  ( 1.3.6.1.4.1.42.2.27.4.2.7
    NAME 'javaNamingReference'
    DESC 'JNDI reference'
    SUP javaObject
    AUXILIARY
    MAY ( javaReferenceAddress $ javaFactory )
  )

  ( 1.3.6.1.4.1.42.2.27.4.2.8
    NAME 'javaMarshalledObject'
    DESC 'Java marshalled object'
    SUP javaObject
    AUXILIARY
    MUST ( javaSerializedData )
  )

  -- Matching rule from ISO X.520 --

  ( 2.5.13.5
    NAME 'caseExactMatch'
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.15
  )

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RFC 2713                Schema for Java Objects             October 1999

Full Copyright Statement

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
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   or assist in its implementation may be prepared, copied, published
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   The limited permissions granted above are perpetual and will not be
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   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.

Ryan, et al.                 Informational                     [Page 21]