Bea Systems, Inc.

Oracle International Corporation

Sam Pullara

Adam Messinger

Prasad Peddada

Dean Bernard Jacobs

Eric M Halpern

Chris Fry

Dave Brown

A system and method for using a preprocessor to determine dependencies between J2EE components. The preprocessor can analyze a running J2EE application, and look at the deployment descriptor information associated with that application. The levels of indirection within the deployed application are followed to determine the actual configuration information used to deploy the application on a first application server. This configuration information can then be parsed, communicated, or otherwise output to a system administrator or software developer, or in some embodiments directly to a second application server, and used to deploy the application on that second application server.

System and method for using a preprocessor to determine dependencies between J2EE components

A streaming parser API expands a base parser by building an iterative method on top of the base parser. The iterative method allows a user to pass a selected element type to the base parser, which can step through the XML document until it locates a matching element. The base parser can then extract the element, process the element as an event, and place the event on an event stream for use by an application.

Streaming parser API for processing XML document

A session replication system provides real-time data replication without unnecessarily slowing down the user experience. A system in accordance with the present invention may utilize a primary server to serve requests from a network client, as well as a secondary server to replicate the session information. When a request is received on the session, an attempt may be made to serve the request on the primary server. If the primary is unable to receive or respond to the request, the request may be served on the secondary server or on a new primary server. If the secondary server receives the request, the secondary server may become the new primary server. If a new primary server is selected, the new primary may request the session information from the secondary server.

Hardware load-balancing apparatus for session replication

A session replication system provides real-time data replication without unnecessarily slowing down the user experience. A system in accordance with the present invention may utilize a primary server to serve requests from a network client, as well as a secondary server to replicate the session information. When a request is received on the session, an attempt may be made to serve the request on the primary server. If the primary is unable to receive or respond to the request, the request may be served on the secondary application server or on a new primary server. If the secondary server receives the request, the secondary server may become the new primary server. If a new primary server is selected, the new primary may request the session information from the secondary server.

Method and apparatus for session replication and failover

Selective parsing of an XML document

In a traditional application server that uses servlets, when a request is dispatched to a thread the service( ) method of the appropriate servlet is called. When the service( ) method returns the response is sent. This is sub-optimal in the case that an asynchronous event must occur before the response can be sent, because the thread running the servlet must block until the event occurs. The invention provides for asynchronous processing of such requests. In one embodiment, the invention provides an extension to the Servlet API which allows the service( ) method to return (and thus the thread to be freed) before the response is ready to be sent. Then when the asynchronous event later occurs the response may be completed and sent.

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San Francisco, CA, United States of America

Sam Pullara