org.eclipse.smila.processing.httphandler
Class PipelineProcessHandler

java.lang.Object
  org.eclipse.smila.http.server.util.ARequestHandler
      org.eclipse.smila.http.server.json.JsonRequestHandler
          org.eclipse.smila.processing.httphandler.PipelineProcessHandler

All Implemented Interfaces:

HttpHandler, RequestHandler

public class PipelineProcessHandler
extends JsonRequestHandler

Implements the handling of HTTP requests for WorkflowProcessor.

Author:

drazen

Field Summary

Fields inherited from class org.eclipse.smila.http.server.json.JsonRequestHandler

FACTORY, HTTP_UTILS

Constructor Summary

PipelineProcessHandler()

Method Summary

protected int	getErrorStatus(java.lang.String method, java.lang.String requestUri, java.lang.Throwable ex) Return a status code for an exception.
protected boolean	isValidMethod(java.lang.String method, java.lang.String requestUri) Checks if the handler allows the HTTP method.
java.lang.Object	process(java.lang.String method, java.lang.String requestUri, Record inputRecord) process input record and return result object.
void	setBlackboardFactory(BlackboardFactory factory) set blackboard factory reference (used by DS).
void	setProcessor(WorkflowProcessor processor) set workflow processor reference (used by DS).
void	unsetBlackboardFactory(BlackboardFactory factory) remove blackboard factory reference (used by DS).
void	unsetProcessor(WorkflowProcessor processor) remove workflow processor reference (used by DS).

Methods inherited from class org.eclipse.smila.http.server.json.JsonRequestHandler

getRequestHost, getSuccessStatus, getSuccessStatus, handle, writeErrorResult, writeResultObject, writeSuccessResult

Methods inherited from class org.eclipse.smila.http.server.util.ARequestHandler

activate, getDynamicUriParts, getRootContextPath, getStaticUriParts, getUriPattern, matches, urlDecode

Methods inherited from class java.lang.Object

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

Constructor Detail

PipelineProcessHandler

public PipelineProcessHandler()

Method Detail

process

public java.lang.Object process(java.lang.String method,
                                java.lang.String requestUri,
                                Record inputRecord)
                         throws java.lang.Exception

process input record and return result object.

Specified by:

process in class JsonRequestHandler

Parameters:

method - HTTP method

requestUri - request URI.

inputRecord - input record parsed either from request body, if it has content, or from request URI parameters.

Returns:

result object, may be null. If this is not a Record, you have to provide a JsonRequestHandler.writeResultObject(OutputStream, Object) method, too.

Throws:

java.lang.Exception - any failure during processing.

setProcessor

public void setProcessor(WorkflowProcessor processor)

set workflow processor reference (used by DS).

Parameters:

processor - workflow processor

unsetProcessor

public void unsetProcessor(WorkflowProcessor processor)

remove workflow processor reference (used by DS).

Parameters:

processor - workflow processor

setBlackboardFactory

public void setBlackboardFactory(BlackboardFactory factory)

set blackboard factory reference (used by DS).

Parameters:

factory - blackboard factory

unsetBlackboardFactory

public void unsetBlackboardFactory(BlackboardFactory factory)

remove blackboard factory reference (used by DS).

Parameters:

factory - blackboard factory

isValidMethod

protected boolean isValidMethod(java.lang.String method,
                                java.lang.String requestUri)

Checks if the handler allows the HTTP method. PipelineHandler supports GET and POST.

Overrides:

isValidMethod in class JsonRequestHandler

Parameters:

method - HTTP method

requestUri - request URI

Returns:

true if the method can be used for the URI, else false.

getErrorStatus

protected int getErrorStatus(java.lang.String method,
                             java.lang.String requestUri,
                             java.lang.Throwable ex)

Return a status code for an exception. empty queries return BAD_REQUEST, not INTERNAL_SERVER_ERROR.

Overrides:

getErrorStatus in class JsonRequestHandler

See Also:

HTTP_UTILS#getErrorStatus(String, String, Throwable)