Create WPS client ExecutionResponse from status location URL

[awst-baum]

Is it possible to create a WPS client ExecutionResponse (org.deegree.protocol.wps.client.process.execute.ExecutionResponse) from a status location URL as returned by org.deegree.protocol.wps.client.process.ProcessExecution.getStatusLocation()? I can't find a method to do it - but it would be really useful if I could just store the status URL for a long-running process and later on restore the ProcessExecution from it, without the need to keep the original ProcessExecution object alive.

I guess the content for that method would be similar to org.deegree.protocol.wps.client.process.ProcessExecution.getState() but would return a new ProcessExecution. A quick fix would be to derive my own CustomProcessExecution and implement it, but sadly all necessary fields and the constructor are private.

Is there already such a method? And if not, could it be considered as a future feature?

[awst-baum]

My solution would be to add something like this to org.deegree.protocol.wps.client.WPSClient.WPSClient:

/***
    * Creates an ExecutionResponse object (contains the process execution status and outputs)
    * from the URL to an wps:ExecuteResponse document.
    * @param url URL of a processExecution's wps:ExecuteResponse document (obtain via 
    * execution.getStatusLocation()).
    * @return ExecutionResponse object containing the process execution status and outputs. 
    * @throws OWSExceptionReport
    * @throws IOException
    * @throws XMLStreamException
    */
public ExecutionResponse getExecutionResponse(URL url) throws OWSExceptionReport, IOException, XMLStreamException {
    LOG.debug( "Polling response document from status location: " + url );
    XMLInputFactory inFactory = XMLInputFactory.newInstance();
    InputStream is = url.openStream();
    XMLStreamReader xmlReader = inFactory.createXMLStreamReader( is );
    XMLStreamUtils.nextElement( xmlReader );
    if ( OWSExceptionReader.isExceptionReport( xmlReader.getName() ) ) {
        throw OWSExceptionReader.parseExceptionReport( xmlReader );
    }
    ExecuteResponse100Reader reader = new ExecuteResponse100Reader( xmlReader );
    return reader.parse100();
}

It could be re-used in org.deegree.protocol.wps.client.process.ProcessExecution.getState().

I'm happy to hear why this is a stupid idea ;-)