org.deegree.services.wps.example
Class BufferProcesslet

java.lang.Object
  org.deegree.services.wps.example.BufferProcesslet

All Implemented Interfaces:

Processlet

public class BufferProcesslet
extends Object
implements Processlet

The BufferProcesslet demonstrates a process which calculates a buffer around an arbitrary geometry.

Version:

$Revision: $, $Date: $

Author:

Rutger Bezema, last edited by: $Author: rbezema $

Field Summary

(package private) static String	IN_BUF_DIST
(package private) static String	IN_GEOM
(package private) static String	OUT_GEOM

Constructor Summary

BufferProcesslet()

Method Summary

void	destroy() Called by the WPService to indicate to a Processlet that it is being taken out of service.
void	init() Called by the WPService to indicate to a Processlet that it is being placed into service.
void	process(ProcessletInputs in, ProcessletOutputs out, ProcessletExecutionInfo info) Called by the WPService to perform the execution of this Processlet.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

IN_BUF_DIST

static final String IN_BUF_DIST

See Also:

Constant Field Values

IN_GEOM

static final String IN_GEOM

See Also:

Constant Field Values

OUT_GEOM

static final String OUT_GEOM

See Also:

Constant Field Values

Constructor Detail

BufferProcesslet

public BufferProcesslet()

Method Detail

destroy

public void destroy()

Description copied from interface: Processlet

Called by the WPService to indicate to a Processlet that it is being taken out of service.

This method gives the Processlet an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the Processlet's current state in memory.

Specified by:

destroy in interface Processlet

init

public void init()

Description copied from interface: Processlet

Called by the WPService to indicate to a Processlet that it is being placed into service.

Specified by:

init in interface Processlet

process

public void process(ProcessletInputs in,
                    ProcessletOutputs out,
                    ProcessletExecutionInfo info)
             throws ProcessletException

Description copied from interface: Processlet

Called by the WPService to perform the execution of this Processlet.

The typical workflow is:

1. Get inputs from in parameter
2. Parse inputs into the required format (e.g. GML)
3. Do computation.
4. Transform computational results into required format (e.g. GML)
5. Write results to out parameter

Please consider ParameterDemoProcesslet as best practice.

Specified by:

process in interface Processlet

Parameters:

in - input arguments to be processed, never null

out - used to store the process outputs, never null

info - can be used to provide execution information, i.e. percentage completed and start/success messages that it wants to make known to clients, never null

Throws:

ProcessletException - may be thrown by the processlet to indicate a processing exception