Module org.apache.jena.fuseki.core

Package org.apache.jena.fuseki.servlets

Class ActionExecLib

java.lang.Object

org.apache.jena.fuseki.servlets.ActionExecLib

public class ActionExecLib
extends Object

Functions relating to HttpAction objects, including the standard execute with logging process (execAction(org.apache.jena.fuseki.servlets.HttpAction, org.apache.jena.fuseki.servlets.ActionProcessor))

Constructor Summary

Constructors

Constructor	Description
ActionExecLib()

Method Summary

Modifier and Type	Method	Description
static void	addRequestId(jakarta.servlet.http.HttpServletResponse response, long id)	Helper method for attaching a request ID to a response as a header
static HttpAction	allocHttpAction(DataAccessPoint dap, org.slf4j.Logger log, ActionCategory category, jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)	Returns a fresh HTTP Action for this request.
static long	allocRequestId(jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)	Helper method which gets a unique request ID and appends it as a header to the response
static void	decCounter(CounterSet counters, CounterName name)
static void	decCounter(Counters counters, CounterName name)	Decrement counter
static boolean	execAction(HttpAction action, Supplier<ActionProcessor> processor)	execAction, allowing for a choice of ActionProcessor within the logging and error handling.
static void	execAction(HttpAction action, ActionProcessor processor)	Standard execution lifecycle for a SPARQL Request.
static void	incCounter(CounterSet counters, CounterName name)
static void	incCounter(Counters counters, CounterName name)	Increment counter
static void	initResponse(HttpAction action)	Set headers for the response.
static void	logNoResponse(HttpAction action)	Log when we don't handle this request.
static void	logRequest(HttpAction action)	Log an HttpAction request.
static void	logResponse(HttpAction action)	Log an HttpAction response.

Methods inherited from class java.lang.Object

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

Constructor Details

ActionExecLib

public ActionExecLib()

Method Details

allocHttpAction

public static HttpAction allocHttpAction(DataAccessPoint dap,
 org.slf4j.Logger log,
 ActionCategory category,
 jakarta.servlet.http.HttpServletRequest request,
 jakarta.servlet.http.HttpServletResponse response)

Returns a fresh HTTP Action for this request.

Parameters:

dap -

request - HTTP request

response - HTTP response

Returns:

a new HTTP Action

execAction

public static void execAction(HttpAction action,
 ActionProcessor processor)

Standard execution lifecycle for a SPARQL Request.

• startRequest(HttpAction)
• initial statistics,
• ActionLifecycle.validate(HttpAction) request,
• ActionLifecycle.execute(HttpAction) request,
• completion/error statistics,
• finishRequest(HttpAction)

Common process for handling HTTP requests with logging and Java error handling. This is the case where the ActionProcessor is defined by or is the servlet directly outside the Fuseki dispatch process (ServletAction for special case like SPARQL_QueryGeneral which directly holds the ActionProcessor and ServletProcessor for administration actions.

Return false if the ActionProcessor is null.

Parameters:

action -

processor -

execAction

public static boolean execAction(HttpAction action,
 Supplier<ActionProcessor> processor)

execAction, allowing for a choice of ActionProcessor within the logging and error handling. Return false if there was no ActionProcessor to handle the action.

allocRequestId

public static long allocRequestId(jakarta.servlet.http.HttpServletRequest request,
 jakarta.servlet.http.HttpServletResponse response)

Helper method which gets a unique request ID and appends it as a header to the response

Parameters:

request - HTTP Request

response - HTTP Response

Returns:

Request ID

addRequestId

public static void addRequestId(jakarta.servlet.http.HttpServletResponse response,
 long id)

Helper method for attaching a request ID to a response as a header

Parameters:

response - Response

id - Request ID

logRequest

public static void logRequest(HttpAction action)

Log an HttpAction request.

logResponse

public static void logResponse(HttpAction action)

Log an HttpAction response. This includes a message to the action log and also on to the standard format Combined NCSA log.

logNoResponse

public static void logNoResponse(HttpAction action)

Log when we don't handle this request.

initResponse

public static void initResponse(HttpAction action)

Set headers for the response.

incCounter

public static void incCounter(Counters counters,
 CounterName name)

Increment counter

decCounter

public static void decCounter(Counters counters,
 CounterName name)

Decrement counter

incCounter

public static void incCounter(CounterSet counters,
 CounterName name)

decCounter

public static void decCounter(CounterSet counters,
 CounterName name)