Schema for Representing Java(tm) Objects in an LDAP Directory (RFC2713)
Original Publication Date: 1999-Oct-01
Included in the Prior Art Database: 2019-Feb-10
Internet Society Requests For Comment (RFCs)
V. Ryan: AUTHOR [+2]
This document defines the schema for representing Java(tm) objects in an LDAP directory. This memo provides information for the Internet community.
Network Working Group V. Ryan Request for Comments: 2713 S. Seligman Category: Informational R. Lee Sun Microsystems, Inc. October 1999
Schema for Representing Java(tm) Objects in an LDAP Directory
Status of this Memo
This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (1999). All Rights Reserved.
This document defines the schema for representing Java(tm) objects in an LDAP directory [LDAPv3]. It defines schema elements to represent a Java serialized object [Serial], a Java marshalled object [RMI], a Java remote object [RMI], and a JNDI reference [JNDI].
This document assumes that the reader has a general knowledge of the Java programming language [Java]. For brevity we use the term "Java object" in place of "object in the Java programming language" throughout this text.
Traditionally, LDAP directories have been used to store data. Users and programmers think of the directory as a hierarchy of directory entries, each containing a set of attributes. You look up an entry from the directory and extract the attribute(s) of interest. For example, you can look up a person’s telephone number from the directory. Alternatively, you can search the directory for entries with a particular set of attributes. For example, you can search for all persons in the directory with the surname "Smith".
For applications written in the Java programming language, a kind of data that is typically shared are Java objects themselves. For such applications, it makes sense to be able to use the directory as a repository for Java objects. The directory provides a centrally administered, and possibly replicated, service for use by Java applications distributed across the network.
Ryan, et al. Informational [Page 1]
RFC 2713 Schema for Java Objects October 1999
For example, an application server might use the directory for "registering" objects representing the services that it manages, so that a client can later search the directory to locate those services as it needs.
The motivation for this document is to define a common way for applications to store and retrieve Java objects from the directory. Using this common schema, any Java application that needs to read or store Java objects in the directory can do so in an interoperable way.
2 Representation of Java Objects
This document defines schema elements to represent three types of Java objects: a Java serialized object, a Java marshalled object, and a JNDI reference. A Java remote object is stored as either a Java marshalled object or a JNDI reference.
2.1 Common Representations
A Java object is stored in the LDAP directory by using the object class javaObject. This is the base class from which other Java object related classes derive: javaSerializedObject, javaMarshalledObject, and javaNamingReference. javaObject is an abstract object class, whic...