EP2035927A1 - Verfahren zum betreiben eines applikationsrahmens sowie eine entsprechende datenbank - Google Patents
Verfahren zum betreiben eines applikationsrahmens sowie eine entsprechende datenbankInfo
- Publication number
- EP2035927A1 EP2035927A1 EP07729478A EP07729478A EP2035927A1 EP 2035927 A1 EP2035927 A1 EP 2035927A1 EP 07729478 A EP07729478 A EP 07729478A EP 07729478 A EP07729478 A EP 07729478A EP 2035927 A1 EP2035927 A1 EP 2035927A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- service
- objects
- services
- proxy
- bundles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44594—Unloading
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/465—Distributed object oriented systems
Definitions
- the invention relates to a method for operating an application framework, which manages several bundles, wherein a bundle other bundles different services that are realized by service objects (1), offers and the services for releasing storage capacities are suspendable and a correspondingly formed database ,
- An application framework provides a standardized environment for the administration and execution of programs, so-called applications
- the applications have prescribed interfaces via which the application frame manages the applications and makes them available to the user.
- the application frame provides a number of service functions that can be used by the applications.
- the functions include eg mechanisms for configuration, life cycle and user management.
- the application framework can be platform-independent, ie it runs, for example, in a Java runtime environment, can be configured dynamically and dynamically expanded by software components. He can also communicate with electronic components that are networked to the system. These may be Java-based components or other modules that be addressed with dedicated drivers, act.
- An open application framework for the home and telematics sector is currently being standardized at the OSGi (Open Service Gateway initiative).
- An OSGi system is a Java application framework within which various individual Java applications, so-called bundles, are connected and run. These bundles are jar files (Java archive), which satisfy a certain predetermined form, in order to be managed by the frame work. Central to this is the provision of interfaces for assuming defined conditions within the framework of lifecycle management. Their most important are installed, uninstalled, resolved and active. The communication between bundles happens by a bundle A
- Services logs on the framework or application framework and a Bundle B requests this from the framework and claims.
- an offered service will be registered with the framework directly when the bundle is registered and will remain available for the entire life of the OSGi system.
- the bundle object providing this service remains instantiated throughout the time and occupies space (e.g., heap).
- the present invention seeks to provide a method by which a large part of the bundle resources can be temporarily released to have such free storage capacity.
- the core idea of the invention is that the various services of a
- Bundles are no longer directly connected to other bundles via suitable interfaces or exchange data, but that a slim proxy object is interposed.
- the service is logged on to the application frame in the form of this proxy object. Thus, the actual service can only be reached via this proxy object.
- the proxy object contains all interfaces of the service.
- the proxy object contains an interface for putting the service to be connected in a suspend or idle state and for releasing the service object.
- it preferably contains software-configured mechanisms to restore the service when needed. In this case, it is preferably continued in the last stored state of the service.
- the proxy object has the same interfaces as the service itself and can therefore be logged in instead of the original service on the application frame. Furthermore, the proxy object contains a reference or a reference to the actual service object.
- a query is first made in the proxy object as to whether the corresponding service object exists, with one in the
- the proxy object hibernates the service object.
- the proxy object does not log off the service but keeps it for the rest of the system. This happens after the status has been saved. If necessary, superfluous data can also be deleted or the service object can be completely removed.
- the interfaces of the service are accessed exclusively via the interfaces of the same name of the proxy object.
- the service object may transmit its state to the proxy object for suspending the service and releasing the claimed resources to be later restored.
- the advantage of the invention is that no additional hard disk space is needed to outsource currently unnecessary services, for example, in a swap process. Furthermore, the application frame is not burdened with the maintenance or operation of services not currently required, so that a processing and / or transmission capacity is not unnecessarily claimed.
- a correspondingly formed database or provided with a corresponding software program computer according to claim 9 for the execution of the method on a device with the proxy objects described above can be generated to serve as an interface between the application frame and various services of a bundle.
- the proxy objects can be implemented either in hardware and / or software in the database or the computer.
- the associated service object may be instantiated in a low-priority thread according to claim 2. If the instantiation is not already prepared, you can restore a suspended one
- Service is likely to lead to delays, especially if it occurs after a user has entered. This can be countered as follows: For example, when calling a menu, it is likely that one of the menu items will be called shortly after, so that the corresponding services of the individual menu items on it should be prepared to be restored. To do this, a low priority thread can be started in the background to prepare for the instantiation of the service object. In the optimal case, for example, when the corresponding menu item is called, the corresponding service object is already restored, so that it can run smoothly. A user in this case has a temporary
- the priority of the associated thread can be increased in accordance with claim 3 in order to accelerate the restoration of the service object.
- a current resource allocation as characterized in claim 4, monitored by a so-called manager of the application frame.
- This identifies a need for additional main memory based on the current resource allocation.
- those services that are registered but rarely and / or not used at all are identified. These services are subsequently caused to suspend the services in the associated proxy objects.
- the manager may also predict an imminent use of a suspended service, for example, when a corresponding menu is invoked.
- the manager can realize a persistent storage of service states.
- a service state can be obtained beyond an application frame restart.
- the manager is implemented in hardware and / or software in a database or an application framework.
- Claim 5 described, application frame according to the OSGi standard, which has already been described above.
- the proxy objects are instantiated instead of the service objects. This requires much less computing and storage capacity.
- the proxy objects are registered as service providers in the system. The service object itself or the service is in the so-called suspend state and is only called when a request is made via the proxy object interface.
- suspend state is only called when a request is made via the proxy object interface.
- the associated thread of the service object already during the startup of the system such as an OSGi system, take place at the start of the bundle. This is again done with low priority, to influence the further startup process as little as possible.
- Figure 1 is a block diagram of an application frame.
- an application frame 100 is shown schematically. Via correspondingly configured interfaces, as indicated by the connecting lines, the application frame 100 is connected to a plurality of services realized by the service objects 1, which are in each case associated with one or different bundles. These service objects 1 usually require a large amount of computation and storage capacity when they are in the activated state. To reduce the required computing capacity unnecessary service objects 1 can also be disabled or suspended.
- a proxy object 2 is now interposed between the service objects 1 and the application frame 100, which is in communication with the service objects 2 via a suitable interface. The service is logged on to the application frame via the proxy object 2.
- the service is logged on to the application frame via the proxy object 2.
- Objects 1 are suspended and are only instantiated in the case when a corresponding call is made via the associated proxy object 2. Since the proxy objects 2 are much slimmer, or require less storage capacity, the computing capacity of the entire system or a correspondingly formed database or a computer is much less burdened. To restore the service 1 or a service object, corresponding mechanisms are implemented in hardware and / or software in the proxy objects 2.
- a manager 3 must be provided, e.g. is integrated in the application frames 100 in order to monitor the resource usage and, in particular, to suspend unneeded services 1.
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Stored Programmes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610028012 DE102006028012A1 (de) | 2006-06-19 | 2006-06-19 | Verfahren zum Betreiben eines Applikationsrahmens sowie eine entsprechende Datenbank |
| PCT/EP2007/055047 WO2007147697A1 (de) | 2006-06-19 | 2007-05-24 | Verfahren zum betreiben eines applikationsrahmens sowie eine entsprechende datenbank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2035927A1 true EP2035927A1 (de) | 2009-03-18 |
Family
ID=38268708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07729478A Ceased EP2035927A1 (de) | 2006-06-19 | 2007-05-24 | Verfahren zum betreiben eines applikationsrahmens sowie eine entsprechende datenbank |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2035927A1 (de) |
| DE (1) | DE102006028012A1 (de) |
| WO (1) | WO2007147697A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7761571B2 (en) * | 2003-11-25 | 2010-07-20 | Panasonic Corporation | SIP service for home network device and service mobility |
| US8151281B2 (en) * | 2004-01-09 | 2012-04-03 | International Business Machines Corporation | Method and system of mapping at least one web service to at least one OSGi service |
-
2006
- 2006-06-19 DE DE200610028012 patent/DE102006028012A1/de not_active Withdrawn
-
2007
- 2007-05-24 WO PCT/EP2007/055047 patent/WO2007147697A1/de not_active Ceased
- 2007-05-24 EP EP07729478A patent/EP2035927A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007147697A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007147697A1 (de) | 2007-12-27 |
| DE102006028012A1 (de) | 2007-12-20 |
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| AX | Request for extension of the european patent |
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| 17Q | First examination report despatched |
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| DAX | Request for extension of the european patent (deleted) | ||
| REG | Reference to a national code |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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Effective date: 20121108 |