Examples with WPSProcessingRegistry org.geotoolkit.wps.client.process.WPSProcessingRegistry used on opensource projects

Example 1 with WPSProcessingRegistry

use of org.geotoolkit.wps.client.process.WPSProcessingRegistry in project geotoolkit by Geomatys.

the class WPSClientDemo method main.

public static void main(String[] args) throws Exception {
    // force loading all image readers/writers
    ImageIO.scanForPlugins();
    // global initialization
    Setup.initialize(null);
    // Instantiate client :
    final URL wpsURL = new URL(SERVICE_URL);
    final WebProcessingClient wpsClient = new WebProcessingClient(wpsURL, WPSVersion.v100.getCode());
    // Once initialized, we can ask a description of wanted process, using its id.
    final WPSProcessingRegistry registry = new WPSProcessingRegistry(wpsClient);
    ProcessDescriptor desc = registry.getDescriptor(PROCESS_ID);
    // We can check process input & output.
    ParameterDescriptorGroup inputDesc = desc.getInputDescriptor();
    ParameterDescriptorGroup outputDesc = desc.getOutputDescriptor();
    // Iterate on wanted parameters. If one is missing, an exception is raised.
    LOGGER.log(Level.INFO, "INPUT : \n");
    for (INPUT in : INPUT.values()) {
        final GeneralParameterDescriptor current = inputDesc.descriptor(in.name);
        LOGGER.log(Level.INFO, "Parameter : " + current.getName().getCode() + " : \n\t" + current.getRemarks());
    }
    LOGGER.log(Level.INFO, "OUTPUT : \n");
    for (OUTPUT out : OUTPUT.values()) {
        final GeneralParameterDescriptor current = outputDesc.descriptor(out.name);
        LOGGER.log(Level.INFO, "Parameter : " + current.getName().getCode() + " : \n\t" + current.getRemarks());
    }
    GeometryFactory factory = org.geotoolkit.geometry.jts.JTS.getFactory();
    Geometry geometry = factory.toGeometry(new Envelope(1.0, 2.0, 43.3, 43.9));
    geometry.setUserData(CommonCRS.WGS84.geographic());
    final double bufDistance = 0.5;
    // Instantiate inputs. Those objects get the same behaviour that the descriptors. If we cannot find a specific
    // parameter, an exception is thrown.
    ParameterValueGroup input = inputDesc.createValue();
    input.parameter(INPUT.geom.name).setValue(geometry);
    input.parameter(INPUT.distance.name).setValue(bufDistance);
    // Process execution. It's synchronous here (talking only of client side, WPS can execute asynchronous process).
    // For asynchronous execution, we must execute it in a thread, using a process listener to get process state.
    org.geotoolkit.process.Process toExecute = desc.createProcess(input);
    toExecute.addListener(new NullProgressListener());
    ParameterValueGroup output = toExecute.call();
    // Get output values :
    for (OUTPUT out : OUTPUT.values()) {
        LOGGER.log(Level.INFO, String.format("%s parameter value : %s", out.name(), output.parameter(out.name).getValue()));
    }
}