OpenORB

OpenORB
Name	OpenORB
Programming language	Java
Operating system	Cross-platform
Genre	Middleware

OpenORB

OpenORB is an open-source middleware framework that provides object request broker functionality for distributed systems. It implements CORBA-related protocols and services to enable interoperability between heterogeneous applications, supporting standards for remote method invocation, object lifecycle, and naming. The project intersects with many established technologies and institutions in distributed computing and networking.

Overview

OpenORB is positioned within the landscape of distributed systems alongside Common Object Request Broker Architecture, Java Platform, Standard Edition, Eclipse Foundation, Apache Software Foundation, and ObjectWeb. The framework targets environments that integrate components developed for Sun Microsystems runtimes, IBM application stacks, BEA Systems middleware, and cloud platforms such as Amazon Web Services and Microsoft Azure. OpenORB supports standards maintained by organizations like Object Management Group and works with tooling from NetBeans and IntelliJ IDEA for development. It interacts with directory services such as LDAP implementations from OpenLDAP and identity solutions from Red Hat.

History and Development

Development of the project traces to open-source movements contemporaneous with efforts by ObjectWeb and contributors associated with INRIA and France Telecom. Early efforts paralleled initiatives from Sun Microsystems around Java RMI and from Novell with enterprise middleware. Contributors included engineers formerly at HP research labs and academics from École Polytechnique collaborating with maintainers of ORBacus and JacORB. Roadmaps were influenced by standardization work of the Object Management Group and by interoperability events such as IIOP plugfests and OMG TC meetings. Community governance evolved through mailing lists and code repositories similar to those used by SourceForge projects and later integrated with modern version control practices exemplified by Git hosting platforms.

Architecture and Features

The architecture centers on an object request broker compatible with Internet Inter-ORB Protocol stacks and integrates naming and trading services like those described in OMG specifications. Components include a Portable Object Adapter inspired by designs found in CORBA 2.3 implementations and servant management used in enterprise deployments by vendors such as Oracle and IBM WebSphere. Features include support for language bindings influenced by Java Native Interface patterns, interception frameworks reminiscent of OSI layering, and security integrations comparable to Secure Sockets Layer and Transport Layer Security deployments used by Mozilla and IETF. The design emphasizes modularity for deployment on application servers similar to Apache Tomcat, JBoss EAP, and GlassFish.

Implementations and Platforms

OpenORB implementations run on Java Virtual Machine distributions from Oracle Corporation and OpenJDK builds maintained by AdoptOpenJDK and Azul Systems. Platform targets include operating systems developed by Red Hat, Canonical (company), and Microsoft Windows server editions. Integration has been demonstrated with containerization platforms such as Docker (software) and orchestration systems like Kubernetes. The project interoperates with other ORB implementations produced by Adaptive Communication Environment communities and commercial offerings from PrismTech and Iona Technologies for heterogeneous deployments.

Use Cases and Applications

Common applications include legacy integration for financial institutions that use stacks from Goldman Sachs and Barclays as well as telecommunications platforms operated by companies like Ericsson and Nokia. Scientific computing projects at institutions such as CERN and NASA have historically relied on middleware for distributed control and data acquisition, analogous to use patterns for OpenORB. Enterprise resource planning systems by vendors like SAP SE and healthcare information systems following standards from HL7 can employ ORB-based connectivity for mission-critical interoperability. Academic research groups at MIT, Stanford University, and University of Cambridge have used ORB frameworks when exploring distributed object paradigms and middleware performance.

Licensing and Governance

Licensing choices for similar projects have varied between permissive licenses used by Apache Software Foundation projects and copyleft licenses favored by Free Software Foundation affiliates. Community governance models have mirrored those of foundations such as Eclipse Foundation and the Apache Software Foundation, using meritocratic committees and technical steering groups. Contributions historically came from individual contributors, corporate sponsors including IBM and Sun Microsystems, and academic institutions such as INRIA and University of California, Berkeley.

Category:Middleware