org.apache.tapestry.internal.services
Class ComponentEventDispatcher

java.lang.Object
  org.apache.tapestry.internal.services.ComponentEventDispatcher

All Implemented Interfaces:

Dispatcher

public class ComponentEventDispatcher
extends Object
implements Dispatcher

Processes component action events sent as requests from the client. Action events include an event type, identify a page and a component, and may provide additional context strings.

Forms:

• /context/pagename:eventname -- event on the page, no action context
• /context/pagename:eventname/foo/bar -- event on the page with action context "foo", "bar"
• /context/pagename.foo.bar -- event on component foo.bar within the page, default event, no action context
• /context/pagename.foo.bar/baz.gnu -- event on component foo.bar within the page, default event, with action context "baz", "gnu"
• /context/pagename.bar.baz:eventname/foo/gnu -- event on component bar.baz within the page with action context "foo" , "gnu"

The page name portion may itself consist of a series of folder names, i.e., "admin/user/create". The context portion isn't the concern of this code, since Request.getPath() will already have stripped that off. We can act as if the context is always "/" (the path always starts with a slash).

See Also:

LinkFactory.createActionLink(org.apache.tapestry.internal.structure.Page, String, String,boolean, Object...)

Constructor Summary

ComponentEventDispatcher(ComponentEventRequestHandler componentEventRequestHandler, ComponentClassResolver componentClassResolver, ContextValueEncoder contextValueEncoder, RequestEncodingInitializer requestEncodingInitializer)

Method Summary

boolean

dispatch(Request request, Response response) Analyzes the incoming request and performs an appropriate operation for each.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentEventDispatcher

public ComponentEventDispatcher(@Traditional
                                ComponentEventRequestHandler componentEventRequestHandler,
                                ComponentClassResolver componentClassResolver,
                                ContextValueEncoder contextValueEncoder,
                                RequestEncodingInitializer requestEncodingInitializer)

Method Detail

dispatch

public boolean dispatch(Request request,
                        Response response)
                 throws IOException

Description copied from interface: Dispatcher

Analyzes the incoming request and performs an appropriate operation for each.

Specified by:

dispatch in interface Dispatcher

Returns:

true if a response was delivered, false if the servlet container should be allowed to handle the request

Throws:

IOException