org.n52.wps.server.handler

Class RequestHandler

java.lang.Object

org.n52.wps.server.handler.RequestHandler

public class RequestHandler
extends Object

This class accepts client requests, determines its type and then schedules the ExecuteRequest's for execution. The request is executed for a short time, within the client will be served with an immediate result. If the time runs out, the client will be served with a reference to the future result. The client can come back later to retrieve the result. Uses "computation_timeout_seconds" from wps.properties

Author:

Timon ter Braak

Field Summary

Fields

Modifier and Type	Field and Description
protected OutputStream	os
protected static RequestExecutor	pool Computation timeout in seconds
protected Request	req
protected String	responseMimeType
static String	VERSION_ATTRIBUTE_NAME

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RequestHandler()
	RequestHandler(InputStream is, OutputStream os) Handles requests of type HTTP_POST (currently executeProcess).
	RequestHandler(Map<String,String[]> params, OutputStream os) Handles requests of type HTTP_GET (currently capabilities and describeProcess).

Method Summary

Modifier and Type	Method and Description
String	getResponseMimeType()
void	handle() Handle a request after its type is determined.
protected void	setResponseMimeType(ExecuteRequest req)

Methods inherited from class java.lang.Object

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

Field Detail

VERSION_ATTRIBUTE_NAME

public static final String VERSION_ATTRIBUTE_NAME

See Also:

Constant Field Values

pool

protected static RequestExecutor pool

Computation timeout in seconds

os

protected OutputStream os

responseMimeType

protected String responseMimeType

req

protected Request req

Constructor Detail

RequestHandler

protected RequestHandler()

RequestHandler

public RequestHandler(Map<String,String[]> params,
                      OutputStream os)
               throws org.n52.wps.server.ExceptionReport

Handles requests of type HTTP_GET (currently capabilities and describeProcess). A Map is used to represent the client input.

Parameters:

params - The client input

os - The OutputStream to write the response to.

Throws:

org.n52.wps.server.ExceptionReport - If the requested operation is not supported

RequestHandler

public RequestHandler(InputStream is,
                      OutputStream os)
               throws org.n52.wps.server.ExceptionReport

Handles requests of type HTTP_POST (currently executeProcess). A Document is used to represent the client input. This Document must first be parsed from an InputStream.

Parameters:

is - The client input

os - The OutputStream to write the response to.

Throws:

org.n52.wps.server.ExceptionReport

Method Detail

handle

public void handle()
            throws org.n52.wps.server.ExceptionReport

Handle a request after its type is determined. The request is scheduled for execution. If the server has enough free resources, the client will be served immediately. If time runs out, the client will be asked to come back later with a reference to the result.

Parameters:

req - The request of the client.

Throws:

org.n52.wps.server.ExceptionReport

setResponseMimeType

protected void setResponseMimeType(ExecuteRequest req)

getResponseMimeType

public String getResponseMimeType()