Sap Ag

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Juergen Heymann

Rainer Brendle

Bernhard Drittler

Udo Offermann

Dietmar Theobald

Stefan Kusterer

Roman Hayer

Thomas Raupp

Sven Schwerin-Wenzel

Christian Fecht

Peter Bittner

Thorsten Vieth

Eckart Liemke

Gerhard Bosch

Meinolf Block

Petr Zdrahal

Mechanisms for allowing allow multi-session capability and session-return enabling stateful web applications include providing a start URL of a requested portal page with an 'External Session ID' (ESID). The ESID is an argument that is different between the two instances of the application (on the same page), and leads to different/independent sessions in the server. When a user returns to the same page, the ESIDs are passed again with the individual application requests, and the server can then logically reconnect to the proper session and allow the user to continue. The ESID can be used to return to an application after the user has previously left to go to another application and then desires to come back, or even when the user closed the browser and restarts the application later.

Session-return enabling stateful web applications

Embodiments of the invention are generally directed to a system and method for implicit transaction control. A transaction manager receives an indication that an operation is to be executed within a transaction. The transaction manager determines whether a preexisting transaction context is available to provide the transaction for the operation. The operation is enclosed within the preexisting transaction context, if the preexisting transaction context is available.

System and method for implicit transaction control

A client computer and a server computer communicate via HTTP. The client computer uses a standard HTTP-browser. Substantially simultaneously with establishing a session by allocating a resource at the server computer, the server computer sends a termination instruction to the browser. The instruction remains unexecuted in the browser during the whole session. In the event that the server computer terminates the session (such as upon unloading the instruction from the browser), the browser causes the server computer to de-allocate the resource.

Communication between client and server computers via http, method, computer program product and system

A system and method of managing a client/server session is disclosed, in which a client uses a browser to request content from a content server. The content associated with the session is received at the browser along with a session termination URL from the content server, the content and session termination URL being passed to a portal page received at the browser from a portal server. A request for a new session is sent from the browser to the portal server, the request including the session termination URL. The session termination URL is sent by the portal server to the content server to terminate the session.

Enhanced internet session management protocol

Embodiments of the invention are generally directed to a system and method for a transaction manager. A transaction manager registers one or more callback methods each having an associated synchronization identifier. An order is defined for the one or more callback methods based, at least in part, on the synchronization identifier associated with each callback method. The callback methods are called in the defined order.

System and method for a transaction manager

Systems and techniques to generate a virtual hierarchy for navigating in and between object hierarchies. In general, in one implementation, the technique includes: flagging nodes in one or more object hierarchies as entry points and generating a virtual hierarchy including a virtual root and the nodes flagged as entry points depend directly from the virtual root.

Entry points for navigation of hierarchical information structures

Systems and techniques to derive virtual objects at run-time from persistencely stored objects. In general, in one implementation, the technique includes receiving a request for a target object from a requesting application. It is determined whether a delta link is associated with the target object. The delta link includes a location of the target object and information describing a desired difference between the target object and a derived object to be returned to the requesting application. The target object is located and a derived object is generated from the target object and the information in the delta link. The derived object is then returned to the requesting application. The target object, and derived object, may include a number of elements. The elements may be name-value pairs, or 'properties', or a number of child objects in an object hierarchy.

Growing community of inventors

Heidelberg, Germany

Juergen Heymann