The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2008
Filed:
May. 20, 2004
Oliver Schmidt, Worth am Rhein, DE;
Norbert Kuck, Karlsruhe, DE;
Edgar Lott, Nussloch, DE;
Martin Strassburger, Oestringen, DE;
Arno Hilgenberg, Mannheim, DE;
Ralf Schmelter, Wiesloch, DE;
Oliver Schmidt, Worth am Rhein, DE;
Norbert Kuck, Karlsruhe, DE;
Edgar Lott, Nussloch, DE;
Martin Strassburger, Oestringen, DE;
Arno Hilgenberg, Mannheim, DE;
Ralf Schmelter, Wiesloch, DE;
SAP AG, Walldorf, DE;
Abstract
Methods and apparatus, including computer systems and program products, for sharing data objects in runtime systems. An identification of a first data object in a first runtime system is received. The first data object references zero or more referenced data objects. A shared closure of data objects, which consists of the first data object and a transitive closure of the referenced data objects, is identified, and a determination is made as to whether the shared closure of data objects is usable in a second runtime system. In some implementations, determining whether a shared closure is usable in a second runtime system includes determining whether each data object in the shared closure is serializable without execution of custom code, or determining whether the runtime class of each object instance in the shared closure is shareable. Using shared closures to share objects between runtime systems can provide isolation between user sessions.