The Java Connector Architecture (JCA) defines a standard architecture for connecting the Java EE platform to heterogeneous Enterprise Information Systems (EIS). Examples of EISs include Enterprise Resource Planning (ERP), mainframe transaction processing (TP), database and messaging systems.

The connector architecture defines a set of scalable, secure, and transactional mechanisms that enable the integration of EISs with application servers and enterprise applications.

The connector architecture also defines a Common Client Interface (CCI) for EIS access. The CCI defines a client API for interacting with heterogeneous EISs.

The connector architecture enables an EIS vendor to provide a standard resource adapter for its EIS. A resource adapter is a system-level software driver that is used by a Java application to connect to an EIS. The resource adapter plugs into an application server and provides connectivity between the EIS, the application server, and the enterprise application. The resource adapter serves as a protocol adapter that allows any arbitrary EIS communication protocol to be used for connectivity. An application server vendor extends its system once to support the connector architecture and is then assured of seamless connectivity to multiple EISs. Likewise, an EIS vendor provides one standard resource adapter which has the capability to plug in to any application server that supports the connector architecture.

Use cases for Java EE Connector Architecture

Examples of resource adapters

In short - when ever you have a situation where the system that you want to integrate with doesn't support a standard protocol, or when you want to take advantage of the cool features of Java EE Connector Architecture like pooling, security and transaction integration it is time to write a resource adapter !


Stefano Maestri

Stefano Maestri is the lead for IronJacamar.

Lin Gao

Lin Gao is a core developer on the IronJacamar team.

Johnaton Lee

Johnaton Lee helps out in the IronJacamar community with identifying issues, and fixing them.

Tyronne Wickramarathne

Tyronne Wickramarathne helps out in the IronJacamar community with identifying issues, and fixing them.


Jesper Pedersen

Jesper Pedersen was previously the lead for IronJacamar.

Jeff Zhang

Jeff Zhang was a core developer on the IronJacamar team.

Vladimir Rastseluev

Vladimir Rastseluev was a core developer on the IronJacamar team.

Dimitris Andreadis

Dimitris Andreadis was an advocate for the IronJacamar project.

Thanks to

Adrian Brock, Carlo de Wolf, Gurkan Erdogdu, Bruno Georges, Paul Gier, Jason Greene, Stefan Guilhen, Jonathan Halliday, Søren Hilmer, Tom Jenkinson, Ales Justin, Vicky Kak, Aslak Knutsen, Sacha Labourey, Mark Little, Alexey Loubyansky, Patrick MacDonald, Scott Marlow, Shelly McGowan, Andrig Miller, Marcus Moyses, Weston Price, Andrew Lee Rubinger, Heiko Rupp, Anil Saldhana, Scott Stark, Clebert Suconic, Andy Taylor, Vladimir Vasilev, Jeremy Whiting, Yang Yong and Leslie York.