Package org.kohsuke.stapler

Class Dispatcher

java.lang.Object

org.kohsuke.stapler.Dispatcher

Direct Known Subclasses:

HttpDeletable.HttpDeletableDispatcher

public abstract class Dispatcher
extends Object

Controls the dispatching of incoming HTTP requests.

Author:

Kohsuke Kawaguchi

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	TRACE	This flag will activate the evaluation trace.
static boolean	TRACE_PER_REQUEST	This flag will activate the per-request evaluation trace for requests that have X-Stapler-Trace set to "true".

Constructor Summary

Constructors

Constructor	Description
Dispatcher()

Method Summary

Modifier and Type	Method	Description
static void	anonymizedTraceEval(StaplerRequest req, StaplerResponse rsp, Object node, String format, String... args)
abstract boolean	dispatch(RequestImpl req, ResponseImpl rsp, Object node)	Tries to handle the given request and returns true if it succeeds.
static boolean	isTraceEnabled(StaplerRequest req)	Checks if tracing is enabled for the given request.
abstract String	toString()	Diagnostic string that explains this dispatch rule.
static void	trace(StaplerRequest req, StaplerResponse rsp, String msg)
static void	trace(StaplerRequest req, StaplerResponse rsp, String msg, Object... args)
static boolean	traceable()
static void	traceEval(StaplerRequest req, StaplerResponse rsp, Object node)
static void	traceEval(StaplerRequest req, StaplerResponse rsp, Object node, String expression)
static void	traceEval(StaplerRequest req, StaplerResponse rsp, Object node, String prefix, String suffix)

Methods inherited from class java.lang.Object

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

Field Details

TRACE

public static boolean TRACE

This flag will activate the evaluation trace. It adds the evaluation process as HTTP headers, and when the evaluation failed, special diagnostic 404 page will be rendered. Useful for developer assistance.

TRACE_PER_REQUEST

public static boolean TRACE_PER_REQUEST

This flag will activate the per-request evaluation trace for requests that have X-Stapler-Trace set to "true". It adds the evaluation process as HTTP headers, and when the evaluation failed, special diagnostic 404 page will be rendered. Useful for developer assistance.

Constructor Details

Dispatcher

public Dispatcher()

Method Details

dispatch

public abstract boolean dispatch(RequestImpl req,
 ResponseImpl rsp,
 Object node)
                          throws IOException,
javax.servlet.ServletException,
IllegalAccessException,
InvocationTargetException

Tries to handle the given request and returns true if it succeeds. Otherwise false.

We have a few known strategies for handling requests (for example, one is to try to treat the request as JSP invocation, another might be try getXXX(), etc) So we use a list of Dispatcher and try them one by one until someone returns true.

Throws:

IOException

javax.servlet.ServletException

IllegalAccessException

InvocationTargetException

toString

public abstract String toString()

Diagnostic string that explains this dispatch rule.

Overrides:

toString in class Object

traceable

public static boolean traceable()

traceEval

public static void traceEval(StaplerRequest req,
 StaplerResponse rsp,
 Object node)

anonymizedTraceEval

public static void anonymizedTraceEval(StaplerRequest req,
 StaplerResponse rsp,
 Object node,
 String format,
 String... args)

traceEval

public static void traceEval(StaplerRequest req,
 StaplerResponse rsp,
 Object node,
 String prefix,
 String suffix)

traceEval

public static void traceEval(StaplerRequest req,
 StaplerResponse rsp,
 Object node,
 String expression)

trace

public static void trace(StaplerRequest req,
 StaplerResponse rsp,
 String msg,
 Object... args)

trace

public static void trace(StaplerRequest req,
 StaplerResponse rsp,
 String msg)

isTraceEnabled

public static boolean isTraceEnabled(StaplerRequest req)

Checks if tracing is enabled for the given request. Tracing can be enabled globally with the "stapler.trace=true" system property. Tracing can be enabled per-request by setting "stapler.trace.per-request=true" and sending an "X-Stapler-Trace" header set to "true" with the request.