SYSTEM AND METHOD FOR CONDITION-BASED APPLICATION LOGIC SHIFTING BETWEEN A CLIENT AND A SERVER

• US 20160173648A1
• Filed: 12/16/2014
• Published: 06/16/2016
• Est. Priority Date: 12/16/2014
• Status: Active Grant

• Current Assignee: Software AG
• Original Assignee: Software AG
• Inventors: De Angelis, Vittorio, De Angelis, Rocco
• Granted Patent: US 9,894,185 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 9/547 Remote procedure calls [RPC]; Web services
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/133 Protocols for remote procedure calls [RPC]

Abstract

A system for condition-based application logic shifting between a client and a server uses a stub generator, a function processor, and a client stub. Both the stub generator and the function processor are located in the server and the client stub is generated by the stub generator. Normally an application function'"'"'s execution occurs on the client. The client stub determines whether or not a client shift condition (CSC) exists for shifting an application function'"'"'s execution from the client to the server when the CSC does exist, and shifting the application'"'"'s function back to the client when it is determined that the CSC does not exist (or no longer exists).

Claims

1. A system for condition-based application logic shifting between a client and a server, the system comprising:

a stub generator located in a server;

a function processor, located in the server, for executing a function; and

a client stub generated by the stub generator,

wherein the stub generator is programmed to configure the client stub to;

determine whether a client shift condition (CSC) exists for shifting an application function'"'"'s execution from the client to the server;

package parameters for the application function'"'"'s execution on the client, and pass the packaged parameters to the server, when the CSC is determined to exist;

execute a remote call to the server, when the CSC is determined to exist, so that the function processor executes the function with the packaged parameters, in the server; and

return, from the server to the client, a result of the executed function which is executed with the packaged parameters by the function processor in the server; and

wherein the stub generator is further programmed to configure the client stub to;

determine if the CSC does not exist or no longer exists; and

execute the function in the client, when it is determined that the CSC does not exist or no longer exists.

2. The system of claim 1, wherein the stub generator is configured to:

read a configuration file from storage located in the server;

read and parse a returned code file, from a web application server, that represents the function;

generate the client stub based on the configuration file and the CSC defined for the corresponding function and add the client stub to the returned code file, to generate a modified code file;

add helper functions to be used by the client stub to the modified code file; and

return the modified code file to the web application server.

3. The system of claim 1, wherein the function processor is configured to:

read a configuration file from storage located in the server;

receive remote procedure call data from the client;

unpack and transform the remote procedure call data that was received from the client;

map the remote procedure call data, which is unpacked and transformed, with the function to be executed based on the configuration file;

execute the function that is mapped with the remote procedure call data that is unpacked and transformed;

pack and transform a result of the executed function; and

return the result of the executed function, which is packed and transformed, to the client stub in the client.

4. A method for condition-based application logic shifting between a client and a server in a system containing a stub generator, a function processor, and a client stub generated by the stub generator, the method comprising:

determining, by a client stub executing on a client, whether a client shift condition (CSC) exists for shifting an application function'"'"'s execution from the client to a server;

packaging, by the client stub on the client, parameters for the application function'"'"'s execution on the client, and passing the packaged parameters to the server, when the CSC is determined to exist;

executing, by the client stub on the client, a remote call to the server, when the CSC is determined to exist, so that a function processor, located in the server, executes on the server the function with the packaged parameters in response to the remote call;

returning, from the server to the client, a result of the executed function which is executed with the packaged parameters by the function processor in the server;

determining if the CSC does not exist or no longer exists; and

executing the function in the client, when it is determined that the CSC does not exist or no longer exists.

5. The method of claim 4, further comprising:

in response to the stub generator;

reading, by the server, a configuration file from storage located in the server;

reading and parsing, by the server, from a web application server, a returned code file that represents the function;

generating, by the server, the client stub based on the configuration file and the CSC defined for the corresponding function and adding it to the returned code file, to generate a modified code file;

adding, by the stub generator, to the modified code file, helper functions to be used by the client stub; and

returning, from the stub generator on the server, to the web application server, the modified code file.

6. The method of claim 4, further comprising:

in response to the function processor;

reading, by the server, from file storage located in the server, a configuration file;

receiving, by the server from the client, remote procedure call data;

unpacking and transforming, by the server, the remote procedure call data that was received from the client;

mapping, by the server, the remote procedure call data, which is unpacked and transformed, with the function to be executed based on the configuration file;

executing, by the server, the function that is mapped with the remote procedure call data that is unpacked and transformed;

packing and transforming, by the server, a result of the executed function; and

returning, from the server to the client stub in the client, the result of the executed function which is packed and transformed.

7. A non-transitory computer readable medium comprising executable instructions for a method for condition-based application logic shifting between a client and a server in a system containing a stub generator, a function processor, and a client stub generated by the stub generator, the instructions being executed by a processor to perform:

determining, by a client stub executing on a client, whether a client shift condition (CSC) exists for shifting an application function'"'"'s execution from the client to a server;

packaging, by the client stub on the client, parameters for the application function'"'"'s execution on the client, and passing the packaged parameters to the server, when the CSC is determined to exist;

executing, by the client stub on the client, a remote call to the server, when the CSC is determined to exist, so that a function processor, located in the server, executes on the server the function with the packaged parameters in response to the remote call;

returning, from the server to the client, a result of the executed function which is executed with the packaged parameters by the function processor in the server;

determining if the CSC does not exist or no longer exists; and

executing the function in the client, when it is determined that the CSC does not exist or no longer exists.

8. The non-transitory computer readable medium of claim 7, further comprising:

in response to the stub generator;

reading, by the server, a configuration file from storage located in the server;

reading and parsing, by the server, from a web application server, a returned code file that represents the function;

generating, by the server, the client stub based on the configuration file and the CSC defined for the corresponding function and adding it to the returned code file, to generate a modified code file;

adding, by the stub generator, to the modified code file, helper functions to be used by the client stub; and

returning, from the stub generator on the server, to the web application server, the modified code file.

9. The non-transitory computer readable medium of claim 8, further comprising:

in response to the function processor;

reading, by the server, a configuration file from storage located in the server;

receiving, by the server from the client, remote procedure call data;

unpacking and transforming, by the server, the remote procedure call data that was received from the client;

mapping, by the server, the remote procedure call data, which is unpacked and transformed, with the function to be executed based on the configuration file;

executing, by the server, the function that is mapped with the remote procedure call data that is unpacked and transformed;

packing and transforming, by the server, a result of the executed function; and

returning, from the server to the client stub in the client, the result of the executed function which is packed and transformed.