|
|
||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
java.lang.Object | +--sunlabs.brazil.beanshell.BeanShellHandler
The BeanShellHandler
permits handlers to be written in "beanshell".
The reason one would write a BeanShell handler, instead of coding the handler directly in Java, is for ease of handler development and maintanence; a BeanShell handler may be modified at will while the server is running, permitting rapid development. Once functional, the code is easily converted into a traditional handler.
The beanshell script is expected to contain both init
and respond methods, which are invoked by the server
just like an ordinary handler.
script is re-read on each request, and a new interperter is
created and initialized. The call to init is
deferred until request time, and called before each
call to respond.
This allows beanshell scripts to be debugged interatively from scratch.
| Constructor Summary | |
BeanShellHandler()
|
|
| Method Summary | |
boolean |
init(Server server,
String prefix)
Initializes the handler. |
boolean |
respond(Request request)
Responds to an HTTP request. |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public BeanShellHandler()
| Method Detail |
public boolean init(Server server,
String prefix)
Handler
init in interface Handlerserver - The HTTP server that created this Handler.
Typical Handlers will use Server.props
to obtain run-time configuration information.prefix - The handlers name.
The string this Handler may prepend to all
of the keys that it uses to extract configuration information
from Server.props. This is set (by the Server
and ChainHandler) to help avoid configuration parameter
namespace collisions.
true if this Handler initialized
successfully, false otherwise. If
false is returned, this Handler
should not be used.
public boolean respond(Request request)
throws IOException
Handler
respond in interface Handlerrequest - The Request object that represents the HTTP
request.
true if the request was handled. A request was
handled if a response was supplied to the client, typically
by calling Request.sendResponse() or
Request.sendError.
IOException - if there was an I/O error while sending the response to
the client. Typically, in that case, the Server
will (try to) send an error message to the client and then
close the client's connection.
The IOException should not be used to silently
ignore problems such as being unable to access some
server-side resource (for example getting a
FileNotFoundException due to not being able
to open a file). In that case, the Handler's
duty is to turn that IOException into a
HTTP response indicating, in this case, that a file could
not be found.
|
Version 2.1, Generated 12/30/04 Copyright (c) 2001-2004, Sun Microsystems. |
||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||