Package org.eclipse.jetty.server.handler

Class HandlerCollection

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.server.handler.AbstractHandler

org.eclipse.jetty.server.handler.AbstractHandlerContainer

org.eclipse.jetty.server.handler.HandlerCollection

All Implemented Interfaces:

Handler, HandlerContainer, Container, Destroyable, Dumpable, Dumpable.DumpableContainer, LifeCycle

Direct Known Subclasses:

ContextHandlerCollection, HandlerList

@ManagedObject("Handler of multiple handlers")
public class HandlerCollection
extends AbstractHandlerContainer

A collection of handlers.

The default implementations calls all handlers in list order, regardless of the response status or exceptions. Derived implementation may alter the order or the conditions of calling the contained handlers.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	HandlerCollection.Handlers

Nested classes/interfaces inherited from class org.eclipse.jetty.server.handler.AbstractHandler

AbstractHandler.ErrorDispatchHandler

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

AbstractLifeCycle.AbstractLifeCycleListener, AbstractLifeCycle.StopException

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Container

Container.InheritedListener, Container.Listener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Dumpable

Dumpable.DumpableContainer

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

LifeCycle.Listener

Field Summary

Fields

Modifier and Type	Field	Description
protected final AtomicReference<HandlerCollection.Handlers>	_handlers

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, STARTED, STARTING, STOPPED, STOPPING

Fields inherited from interface org.eclipse.jetty.util.component.Dumpable

KEY

Constructor Summary

Constructors

Constructor	Description
HandlerCollection()
HandlerCollection(boolean mutableWhenRunning, Handler... handlers)
HandlerCollection(Handler... handlers)

Method Summary

Modifier and Type	Method	Description
void	addHandler(Handler handler)	Adds a handler.
void	destroy()	Destroys the managed Destroyable beans in the reverse order they were added.
protected void	expandChildren(List<Handler> list, Class<?> byClass)
Handler[]	getHandlers()
void	handle(String target, Request baseRequest, jakarta.servlet.http.HttpServletRequest request, jakarta.servlet.http.HttpServletResponse response)	Handle a request.
protected HandlerCollection.Handlers	newHandlers(Handler[] handlers)
void	prependHandler(Handler handler)	Prepends a handler.
void	removeHandler(Handler handler)
void	setHandlers(Handler[] handlers)
protected boolean	updateHandlers(HandlerCollection.Handlers old, HandlerCollection.Handlers handlers)

Methods inherited from class org.eclipse.jetty.server.handler.AbstractHandlerContainer

expandHandler, findContainerOf, getChildHandlerByClass, getChildHandlers, getChildHandlersByClass, setServer

Methods inherited from class org.eclipse.jetty.server.handler.AbstractHandler

doError, doStart, doStop, getServer

Methods inherited from class org.eclipse.jetty.util.component.ContainerLifeCycle

addBean, addBean, addEventListener, addManaged, contains, dump, dump, dump, dumpObjects, dumpStdErr, getBean, getBeans, getBeans, getContainedBeans, getContainedBeans, isAuto, isManaged, isUnmanaged, manage, removeBean, removeBeans, removeEventListener, setBeans, start, stop, unmanage, updateBean, updateBean, updateBeans, updateBeans

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

getEventListeners, getState, getState, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, setEventListeners, start, stop, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.util.component.Container

getCachedBeans, getEventListeners

Methods inherited from interface org.eclipse.jetty.util.component.Dumpable

dumpSelf

Methods inherited from interface org.eclipse.jetty.util.component.Dumpable.DumpableContainer

isDumpable

Methods inherited from interface org.eclipse.jetty.util.component.LifeCycle

addEventListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeEventListener, start, stop

Field Details

_handlers

protected final AtomicReference<HandlerCollection.Handlers> _handlers

Constructor Details

HandlerCollection

public HandlerCollection()

HandlerCollection

public HandlerCollection(Handler... handlers)

HandlerCollection

public HandlerCollection(boolean mutableWhenRunning,
 Handler... handlers)

Method Details

getHandlers

@ManagedAttribute(value="Wrapped handlers",
                  readonly=true)
public Handler[] getHandlers()

Returns:

the array of handlers.

setHandlers

public void setHandlers(Handler[] handlers)

Parameters:

handlers - the array of handlers to set.

newHandlers

protected HandlerCollection.Handlers newHandlers(Handler[] handlers)

updateHandlers

protected boolean updateHandlers(HandlerCollection.Handlers old,
 HandlerCollection.Handlers handlers)

handle

public void handle(String target,
 Request baseRequest,
 jakarta.servlet.http.HttpServletRequest request,
 jakarta.servlet.http.HttpServletResponse response)
            throws IOException,
jakarta.servlet.ServletException

Description copied from interface: Handler

Handle a request.

Specified by:

handle in interface Handler

Specified by:

handle in class AbstractHandler

Parameters:

target - The target of the request - either a URI or a name.

baseRequest - The original unwrapped request object.

request - The request either as the Request object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getRequest() method can be used access the Request object if required.

response - The response as the Response object or a wrapper of that request. The HttpConnection.getCurrentConnection().getHttpChannel().getResponse() method can be used access the Response object if required.

Throws:

IOException - if unable to handle the request or response processing

jakarta.servlet.ServletException - if unable to handle the request or response due to underlying servlet issue

addHandler

public void addHandler(Handler handler)

Adds a handler. This implementation adds the passed handler to the end of the existing collection of handlers. If the handler is already added, it is removed and readded

prependHandler

public void prependHandler(Handler handler)

Prepends a handler. This implementation adds the passed handler to the start of the existing collection of handlers.

removeHandler

public void removeHandler(Handler handler)

expandChildren

protected void expandChildren(List<Handler> list,
 Class<?> byClass)

Overrides:

expandChildren in class AbstractHandlerContainer

destroy

public void destroy()

Description copied from class: ContainerLifeCycle

Destroys the managed Destroyable beans in the reverse order they were added.

Specified by:

destroy in interface Destroyable

Specified by:

destroy in interface Handler

Overrides:

destroy in class AbstractHandler