Marvin supports protocol versions 1.0 and 1.1. JSON Schema Service Descriptor can also be used for runtime parameter discovery.
The response MUST be a textual representation of any finite combinations of java.lang.Boolean, java.lang.Number, java.lang.String, java.lang.Object[], java.util.Map<java.lang.String, java.lang.Object>, and null
Calling JSON-RPC Service from API
JsonServiceDescriptor descriptor = new JsonServiceDescriptor();
descriptor.setURL("http://api.geonames.org/");
descriptor.setMethodName("citiesJSON");
descriptor.addArgument(ServiceArgument.createArgument("north", new Double(0)));
descriptor.addArgument(ServiceArgument.createArgument("south", new Double(0)));
descriptor.addArgument(ServiceArgument.createArgument("east", new Double(0)));
descriptor.addArgument(ServiceArgument.createArgument("west", new Double(0)));
descriptor.addArgument(ServiceArgument.createArgument("language", ""));
descriptor.addArgument(ServiceArgument.createArgument("username", ""));
Object result = null;
try {
result = descriptor.getServiceHandler().callService(descriptor, 44.1, -9.9, 22.4, 55.2, "en", "demo");
} catch (ServiceException e) {
System.err.println("Service call failed.");
}
StringBuilder builder = new StringBuilder();
Object[] array = (Object[]) ((Map<String, Object>)result).get("geonames");
for(Object obj : array) {
builder.append("Synchronized call returned: " + ((Map<String, Object>)obj).get("name") + "\n");
}
System.out.println(builder.toString());
descriptor.getServiceHandler().callService(descriptor, new AsyncCallback<Map<String, Object>>() {
@Override
public void onSuccess(Map<String, Object> result) {
StringBuilder builder = new StringBuilder();
Object[] array = (Object[]) result.get("geonames");
for(Object obj : array) {
builder.append("Asynchronous call returned: " + ((Map<String, Object>)obj).get("name") + "\n");
}
System.out.println(builder.toString());
}
@Override
public void onFailure(ServiceException caught) {
System.err.println("Asynchronous call failed.");
}
}, 44.1, -9.9, 22.4, 55.2, "en", "demo");