static void MyAgentEventCallback(sml.smlAgentEventId eventID, IntPtr callbackData, IntPtr kernelPtr, String agentName)
{
// Retrieve the original object reference from the GCHandle which is used to pass the value safely to and from C++ (unsafe/unmanaged) code.
sml.Kernel kernel = (sml.Kernel)((GCHandle)kernelPtr).Target;
// Retrieve arbitrary data from callback data object (note data here can be null, but the wrapper object callbackData won't be so this call is safe)
// This field's usage is up to the user and passed in during registation call and passed back here. Can be used to provide context.
Object userData = (Object)((GCHandle)callbackData).Target;
// This callback returns the name of the agent as a string, to avoid having SWIG have to lookup the C# agent object
// and pass that back. We do something similar in Java for the same reasons.
sml.Agent agent = kernel.GetAgent(agentName);
if (agent == null)
{
throw new Exception("Error looking up agent in callback");
}
System.Console.Out.WriteLine(eventID + " agent " + agentName + " with user data " + userData);
}
static String MyTestRhsFunction(sml.smlRhsEventId eventID, IntPtr callbackData, IntPtr kernelPtr, String agentName, String functionName, String argument)
{
// Retrieve the original object reference from the GCHandle which is used to pass the value safely to and from C++ (unsafe/unmanaged) code.
sml.Kernel kernel = (sml.Kernel)((GCHandle)kernelPtr).Target;
// Retrieve arbitrary data from callback data object (note data here can be null, but the wrapper object callbackData won't be so this call is safe)
// This field's usage is up to the user and passed in during registation call and passed back here. Can be used to provide context.
Object userData = (Object)((GCHandle)callbackData).Target;
// This callback returns the name of the agent as a string, to avoid having SWIG have to lookup the C# agent object
// and pass that back. We do something similar in Java for the same reasons.
sml.Agent agent = kernel.GetAgent(agentName);
if (agent == null)
{
throw new Exception("Error looking up agent in callback");
}
System.Console.Out.WriteLine(eventID + " agent " + agentName + " function " + functionName + " arg " + argument);
// This is the result of the RHS function and can be placed into working memory as the result of the call
// (whether this happens or not depends on how the RHS function is used in the production rule).
return("result");
}