org.eclipse.smila.processing.httphandler

Class PipelineHandler

java.lang.Object

org.eclipse.smila.http.server.util.ARequestHandler

org.eclipse.smila.http.server.json.JsonRequestHandler

org.eclipse.smila.processing.httphandler.PipelineHandler

All Implemented Interfaces:

HttpHandler, RequestHandler

public class PipelineHandler
extends JsonRequestHandler

Implements the handling of HTTP requests for reading and deleting a workflow definition.

Author:

drazen

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	EXCEPTION_MESSAGE Exception message if no definition has been found.

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

FACTORY, HEADER_REQUEST_HOST, HTTP_UTILS

Constructor Summary

Constructors

Constructor and Description
PipelineHandler()

Method Summary

Methods

Modifier and Type	Method and Description
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	setProcessor(WorkflowProcessor processor) set workflow processor reference.
void	unsetProcessor(WorkflowProcessor processor) remove workflow processor reference.

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

getRequestHost, getSuccessStatus, getSuccessStatus, handle, process, 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

Field Detail

EXCEPTION_MESSAGE

public static final java.lang.String EXCEPTION_MESSAGE

Exception message if no definition has been found.

See Also:

Constant Field Values

Constructor Detail

PipelineHandler

public PipelineHandler()

Method Detail

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.

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. Override this method in your handler if you do not need access to HttpExchange object, e.g. to read http header fields. Otherwise use overloaded method with HttpExchange parameter.

Overrides:

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.

getErrorStatus

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

Description copied from class: JsonRequestHandler

Return a status code for an exception.

Overrides:

getErrorStatus in class JsonRequestHandler

See Also:

HTTP_UTILS#getErrorStatus(String, String, Throwable)

setProcessor

public void setProcessor(WorkflowProcessor processor)

set workflow processor reference.

Parameters:

processor - workflow processor

unsetProcessor

public void unsetProcessor(WorkflowProcessor processor)

remove workflow processor reference.

Parameters:

processor - workflow processor