International Business Machines Corporation

Ashok C Mammen

Stephen T Auriemma

Joseph Celi, Jr

Michael R O'Brien

Maria M Corbett

David Andrew Girle

A system and method is provided for optimizing a SyncML slow sync between a proprietary client and server. When a slow sync is detected, the client and server can depart from the normal SyncML protocol and process summary data without having to compare all items on a field-by-field basis.

Optimizing a slow synchronization package

System and method for optimizing synchronization

Embodiments of the present invention provide for synchronization client coordination with a change log service (CLS). In an embodiment of the invention, a change tracking thread on a synchronization client provided as part of a pervasive device is initiated. A synchronization message is sent to the CLS upon detecting a change to data. Synchronization is performed and upon completing synchronization, a synchronization stop message is sent to the CLS. Upon sending the synchronization stop message to the CLS, the change tracking thread on the synchronization client is stopped.

Embedded change logging for data synchronization

Embodiments of the present invention provide for embedded change logging for data synchronization. In an embodiment of the invention, an embedded change logging data processing system can include a change embedded database (EDB) disposed in a pervasive device. The EDB can store entries for notified changes in data for multiple different end-user applications in the pervasive device. The system also can include a change log service (CLS) disposed in the pervasive device and coupled to the EDB. The CLS can include program code enabled to register with multiple different end-user applications in the pervasive device to receive notifications of changes, and to write entries to the EDB responsive to the notifications. Finally, the system can include a synchronization client disposed in the pervasive device separately from the CLS. The synchronization client can include program code enabled to directly access the EDB to perform data synchronization with a remote host.

Methods (), systems (), computer program products, and signal bearing mediums for streaming an eXtensible Markup Language (XML)-type document () over a communication network () are described. A sequence of commands are received and synchronously converted () into XML-type fragments () for assembling and streaming a single XML-type document for a mobile device () in the communication network (). The size of the XML-type document () exceeds the size limit imposed by the available memory on the device but less than the size limit imposed by the transport layer of a communication network (). A DTD of the XML-type document () can be broken up into logically independent elements. The XML-type fragments () are assembled () in a buffer that is constrained to be smaller in size than the size constraint of the transport layer of the communication network (). Periodically, the assembled fragments () are flushed () from the buffer to the transport layer of the communication network () dependent upon the DTD of the XML-type document () without a limitation on the size of a message to communicate the XML-type document () over the transport layer without loss of information.

Method of streaming size-constrained valid XML

A system and method to synchronize OSGi bundle inventories between an OSGi bundle server and a client are presented. When a server detects that a client requires a bundle update, the server and client proceed through a data synchronization process prior to invoking in a device management session to provide bundles from the server to the client. During the data synchronization process, the client provides manifest information to the server that allows the server to store an up-to-date client manifest. The server uses the locally stored client manifest to select bundles, along with dependent bundles, to provide to the client. After synchronization, the client enters into a device management session with the server, at which time the server provides the selected bundles to the client based upon the locally stored client manifest.

System and method to synchronize OSGi bundle inventories between an OSGi bundle server and a client

When a current synchronization between a first device and a second device is commenced, a last anchor for the current synchronization to an initialization time of a previous synchronization between the first device and the second device, and a next anchor for the current synchronization is set to an initialization time of the current synchronization. Then, a set of data elements to be synchronized during the current synchronization is determined. Typically, the set includes only those data elements that have been modified after the last anchor and up to (e.g., before or equal to) the next anchor. When the set of modified data elements is received on the second device from the first device, a device modified timestamp (DMT) for the set of data elements on the second device is set to the next anchor instead of to the current time at which the data elements are received.

Method, system and program product for synchronizing data elements between devices

A method is provided for optimizing a SyncML slow sync between a proprietary client and server. When a slow sync is detected, the client and server can depart from the normal SyncML protocol and process summary data without having to compare all items on a field-by-field basis.

Growing community of inventors

Bengaluru, India

Ashok C Mammen