Process and system for a client object to perform a remote method invocation of a method in a server object

A method for implementing a distributed application in a distributed data processing system, the method comprising the computer-implemented steps of:

• executing a client object in a client that implements a first programming environment, said client object being written for said first programming environment;
• executing a server object in a server that implements a second programming environment that is different from said first programming environment, said server object being written for said first programming environment;
• in response to the client object beginning an attempt to invoke a method in the server object;
• obtaining a proxy for the second programming environment;
• and
• wrapping the proxy in an adapter which isolates the proxy from the client object, and the adapter performing data conversion between the proxy and the client object for different types of data, wherein the step of performing data conversation between the proxy and the client object for different types of data comprises:
• responsive to receiving a method called by the client object, parsing the method for an argument;
• performing data conversion on the argument if necessary;
• determining if the argument is wrapped by an adapter;
• if the argument is wrapped by an adapter, unwrapping the adapter from the argument to retrieve a proxy of the argument, wherein the proxy of the argument provides a reference to a server object in the second programming environment representing the argument;
• delegating the method called by the client object to the proxy of the argument;
• responsive to detecting a return value, determining if the return value is a proxy for the second programming environment;
• if the return value is proxy for the second programming environment, wrapping the proxy with a suitable adapter based on a type of the object reference;
• and
• returning the wrapped proxy to the client object.

A data processing system for invoking a method of a server object in a distributed application in a distributed data processing system, the data processing system comprising:

• execution means for executing a client object in a client that implements a first programming environment, said client object being written for said first programming environment;
• execution means for executing a server object in a server that implements a second programming environment that is different from said first programming environment, said server object being written for said first programming environment;
• execution means for executing said client object which begins an attempt to invoke a method in the server object;
• in response to the client object beginning the attempt to invoke the method in the server object;
• obtaining means for obtaining an object reference on the client for said second programming environment;
• wrapping means for wrapping the object reference in an adapter which isolates the object reference from the client object, and the adapter performing data conversion between the object reference and the client object for different types of data, wherein the means for performing data conversion between the object reference and the client object for different types of data comprises:
• responsive to receiving a method called by the client object, parsing means for parsing the method for an argument;
• performing means for performing data conversion on the argument if necessary;
• determining means for determining if the argument is wrapped by an adapter;
• if the argument is wrapped by an adapter, unwrapping means for unwrapping the adapter from the argument to retrieve an object reference of the argument, wherein the object reference of the argument provides a reference to a server object in the second programming environment representing the argument;
• delegating means for delegating the method called by the client object to the object reference of the argument;
• responsive to detecting a return value, determining means for determining the return value is an object reference for the second programming environment;
• if the return value is an object reference for the second programming environment, wrapping means for wrapping the object reference with a suitable adapter based on a type of the object reference;
• and
• returning means for returning the wrapped object reference to the client object.

A data processing system for implementing a distributed application in a distributed data processing system, the data processing system comprising:

• execution means for executing a client object in a client that implements a first programming environment, said client object being written for said first programming environment;
• execution means for executing a server object in a server that implements a second programming environment that is different from said first programming environment, said server object being written for said first programming environment;
• in response to the client object beginning an attempt to invoke a method in the server object;
• obtaining means for obtaining an object reference for the second programming environment;
• wrapping means for wrapping the proxy in an adapter which isolates the proxy from the client object, and the adapter performing data conversion between the proxy and the client object for different types of data, wherein the means for performing data conversion between the proxy and the client object for different types of data comprises:
• responsive to receiving a method called by the client object, parsing means for parsing the method for an argument;
• performing means for performing data conversion on the argument if necessary;
• determining means for determining if the argument is wrapped by an adapter;
• if the argument is wrapped by an adapter, unwrapping means for unwrapping the adapter from the argument to retrieve a proxy of the argument, wherein the proxy of the argument provides a reference to a server object in the second programming environment representing the argument;
• delegating means for delegating the method called by the client object to the proxy of the argument;
• responsive to detecting a return value, determining means for determining if the return value is a proxy for the second programming environment;
• if the return value is proxy for the second programming environment, wrapping means for wrapping the proxy with a suitable adapter based on a type of the object reference;
• and
• returning means for returning the wrapped proxy to the client object.

A computer program product in a computer readable medium for use in a data processing system for invoking a method of a server object in a distributed application in the distributed data processing system, the computer program product comprising:

• instructions for executing a client object in a client that implements a first programming environment said client object being written for said first programming environment;
• instructions for executing a server object in a server that implements a second programming environment that is different from said first programming environment, said server object being written for said first programming environment;
• instructions for executing said client object which begins an attempt to invoke a method in the server object;
• in response to the client object beginning the attempt to invoke the method in the server object;
• instructions for obtaining an object reference on the client for said second programming environment;
• instructions for wrapping the object reference in an adapter which isolates the object reference from the client object, and the adapter performing data conversion between the object reference and the client object for different types of data, wherein the instructions for performing data conversion between the object reference and the client object for different types of data comprises:
• responsive to receiving a method called by the client object, instructions for parsing the method for an argument;
• instructions for performing data conversion on the argument if necessary;
• instructions for determining if the argument is wrapped by an adapter;
• if the argument is wrapped by an adapter, instructions for unwrapping the adapter from the argument to retrieve an object reference of the argument, wherein the object reference of the argument provides a reference to a server object in the second programming environment representing the argument;
• instructions for delegating the method called by the client object to the object reference of the argument;
• responsive to detecting a return value, instructions for determining if the return value is an object reference for the second programming environment;
• if the return value is an object reference for the second programming environment, instructions for wrapping the object reference with a suitable adapter based on a type of the object reference;
• and
• instructions for returning the wrapped object reference to the client object.

A computer program product in a computer readable medium for use in a data processing system for implementing a distributed application in a distributed data processing system, the computer program product comprising:

• instructions for executing a client object in a client that implements a first programming environment, said client object being written for said first programming environment;
• instructions for executing a server object in a server that implements a second programming environment that is different from said first programming environment, said server object being written for said first programming environment;
• in response to the client object beginning an attempt to invoke a method in the server object;
• instructions for obtaining an object reference for the second programming environment;
• instructions for wrapping the proxy in an adapter which isolates the proxy from the client object, and the adapter performing data conversion between the proxy and the client object for different types of data, wherein the instructions for performing data conversion between the proxy and the client object for different types of data comprises:
• responsive to receiving a method called by the client object, instructions for parsing the method for an argument;
• instructions for performing data conversion on the argument if necessary;
• instructions for determining if the argument is wrapped by an adapter;
• if the argument is wrapped by an adapter, instructions for unwrapping the adapter from the argument to retrieve a proxy of the argument, wherein the proxy of the argument provides a reference to a server object in the second programming environment representing the argument;
• instructions for delegating the method called by the client object to the proxy of the argument;
• responsive to detecting a return value, instructions for determining if the return value is a proxy for the second programming environment;
• if the return value is proxy for the second programming environment, instructions for wrapping the proxy with a suitable adapter based on a type of the object reference;
• and
• instructions for returning the wrapped proxy to the client object.