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- /*
-
- Copyright (C) 2000 Stefan Westerfeld
- stefan@space.twc.de
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with this library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-
- */
-
- #ifndef MCOP_DYNAMICREQUEST_H
- #define MCOP_DYNAMICREQUEST_H
-
- #include "buffer.h"
- #include "anyref.h"
- #include <vector>
- #include <string>
-
- #include "arts_export.h"
-
- /*
- * BC - Status (2002-03-08): DynamicRequest
- *
- * Has to be kept binary compatible (use d ptr).
- */
-
- namespace Arts {
-
- class Object;
- class Type;
- class DynamicRequestPrivate;
-
- /**
- * The DynamicRequest class can be used to invoke requests on objects, without
- * using IDL generated code to do so (i.e. you can talk to objects without
- * having to know their interfaces at compile time)
- *
- * Suppose you have the interface
- *
- * interface SimpleSoundServer {
- * [...]
- * long play(string file); // plays a file and returns an id
- * [...]
- * };
- *
- * And server is of type SimpleSoundServer, you can write in your C++ code:
- *
- * long id;
- * if(DynamicRequest(server).method("play").param("/tmp/bong.wav").invoke(id))
- * {
- * cout << "playing file now, id is " << id << endl;
- * }
- * else
- * {
- * cout << "something went wrong with the dynamic request" << endl;
- * }
- *
- * You can of course also add parameters and other information one-by-one:
- *
- * DynamicRequest request(server);
- * request.method("play");
- * request.param("/tmp/bong.wav");
- *
- * long id;
- * if(request.invoke(id)) cout << "success" << endl;
- */
-
- class ARTS_EXPORT DynamicRequest {
- public:
- /**
- * creates a dynamic request which will be sent to a specific object
- */
- DynamicRequest(const Object& object);
-
- /**
- * deletes the dynamic request
- */
- ~DynamicRequest();
-
- /**
- * says that the following method will be a oneway method, for example
- *
- * DynamicRequest(someobject).oneway().method("stop").invoke();
- */
- DynamicRequest& oneway();
-
- /**
- * sets the method to invoke
- */
- DynamicRequest& method(const std::string& method);
-
- /**
- * adds a parameter to the call
- */
- DynamicRequest& param(const AnyConstRef& value);
-
- /**
- * executes the request, call this if you don't expect a return type
- *
- * @returns true if the request could be performed
- */
- bool invoke();
-
- /**
- * executes the request: this version accepts an AnyRef& as result type
- *
- * @returns true if the request could be performed
- */
- bool invoke(const AnyRef& result);
-
- /*
- * TODO: Some types can't yet be used in dynamic requests, these are
- * enum, sequence<enum>, type, sequence<type>, object, sequence<object>
- */
- private:
- DynamicRequestPrivate *d;
- };
-
- }
-
- #endif /* MCOP_DYNAMICREQUEST_H */
-