International Business Machines Corporation

Michael P Priven

Robert L Abraham

Thomas P Moorman

Floyd W Shackelford

William L Rich

Richard E Moore

April D Stiles

Donald E Curtis

Thomas F Mitchell

W Pettus Gewin

Kathleen K Tubbs

Jane E Schrock

A method and system of increasing efficiency within a data processing system having multiple applications executing within the data processing system. Each of the applications requires a specific environment. A collection of parameters which specify an environment is stored within the data processing system in response to an initialization of the environment for utilization by a first application. Next, the minimal requirements of an second application requesting an environment are determined in response to an attempted initialization of the second application. An existing environment is then utilized if the collection of parameters specifying the environment meets the minimal requirements of the second application, wherein data processing efficiency is increased.

Method and system for managing environments with a data processing system

In an Object Oriented Programming System, a Communications Interface Packet (CIP) enables processing in either a remote system or in a batch environment. A CIP is an object in an Object Oriented Programming System, and like any other object, the CIP object contains data or attributes surrounded by or encapsulated by methods or actions for those data or attributes. Unique to a CIP, however, are attributes which contain an action, an object and parameters. An Application Programming Interface (API) method enables remote processing. An IPA method, which is the reverse of the API method, creates the CIP object which is to be executed in a remote or batch system through the application programming interface. After a CIP object has been created, it must be flattened or formatted prior to submission to the batch system or prior to sending the CIP object to a remote system. Flattening or formatting puts the CIP object into a flat sequential file known as a product data interface (PDIF) file for use by either the remote or batch system. The PDIF file includes three major sections known as the administrative header section, the data dictionary section, and the object data section.

Remote and batch processing in an object oriented programming system

Time consuming and reusable queries are handled in an object oriented database management system by providing a persistent stream object class. The persistent stream object class is a subclass of the stream class which is typically provided to encapsulate the results of a query. The persistent stream class inherits all the attributes and methods of the stream class but also includes a 'save' method for saving the results of a query. When a query names a persistent stream as it object, the query results are saved. The query may also be performed in background or batch mode. All time consuming and reusable queries are performed by sending a query message to the persistent stream class, to thereby automatically save the query results.

Persistent stream for processing time consuming and reusable queries in

The present invention is directed to systems and methods for recovering from unplanned failures in object oriented computing environments. The systems and methods of the present invention recover from unplanned failures in an efficient manner by storing recovery information in recovery objects. During recovery operations from an unplanned failure, object instance methods (which were abnormally terminated by the unplanned failure) use the recovery information to identify committable actions which were executed prior to the unplanned failure. The object instance methods then execute committable actions which were not executed prior to the unplanned failure. Thus, according to the present invention, the committable actions which were executed prior to the unplanned failure are not re-executed, and the committable actions which were not executed prior to the planned failure are executed.

Recovery objects in an object oriented computing environment

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Marietta, GA, United States of America

Michael P Priven