public Function function(Name processName, List<Expression> args, Literal fallback) {
// if the param function just return it
if (processName.equals(new NameImpl(ParameterFunction.NAME))) {
return new ParameterFunction(fallback, args);
}
// lookup the process
if (functionNames == null) {
init();
}
if (!processToFunction.containsKey(processName)) {
// no such function
return null;
} else {
// wrap the process
org.geotools.process.Process process = Processors.createProcess(processName);
Map<String, Parameter<?>> parameters = Processors.getParameterInfo(processName);
if (process instanceof RenderingProcess) {
return new RenderingProcessFunction(
processName.getLocalPart(),
processName,
args,
parameters,
(RenderingProcess) process,
fallback);
} else {
return new ProcessFunction(
processName.getLocalPart(), processName, args, parameters, process, fallback);
}
}
}
public void testProcess() throws ParseException, InterruptedException, ExecutionException {
WKTReader wktReader = new WKTReader(new GeometryFactory());
Geometry geom = wktReader.read("MULTIPOINT (1 1, 5 4, 7 9, 5 5, 2 2)");
Name name = new NameImpl("spatial", "octagonalEnvelope");
org.geotools.process.Process process = Processors.createProcess(name);
System.out.println("Executing process: " + name);
for (Map.Entry<String, Parameter<?>> entry : Processors.getParameterInfo(name).entrySet()) {
System.out.println("\t" + entry.getKey() + ":\t" + entry.getValue());
}
ProcessExecutor engine = Processors.newProcessExecutor(2);
// quick map of inputs
Map<String, Object> input = new KVP("geom", geom);
Progress working = engine.submit(process, input);
// you could do other stuff whle working is doing its thing
if (working.isCancelled()) {
return;
}
Map<String, Object> result = working.get(); // get is BLOCKING
Geometry octo = (Geometry) result.get("result");
System.out.println(octo);
}
