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java.lang.Object | +--sunlabs.brazil.filter.ReplaceFilter
Filter to replace current content with a static form, or template. This should be called the TemplateFilter, but that name's already taken. The content is replaced by the template lock-stock-and-barrel. Typically, an upstream filter has extracted the relevent parts of the content, and a down-stream filter will combine it with the template. The filename to use for the template is computed at each request, so it may be modified dynamically. The following server properties are used:
| Constructor Summary | |
ReplaceFilter()
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| Method Summary | |
byte[] |
filter(Request request,
MimeHeaders headers,
byte[] content)
Grab the template file name, Read in the file, and deliver it as content. |
boolean |
init(Server server,
String prefix)
Initializes the handler. |
boolean |
respond(Request request)
This is the request object before the content was fetched |
boolean |
shouldFilter(Request request,
MimeHeaders headers)
Only replace text documents |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public ReplaceFilter()
| 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)
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.
public boolean shouldFilter(Request request,
MimeHeaders headers)
shouldFilter in interface Filterrequest - The in-progress HTTP request.headers - The MIME headers generated by the wrapped Handler.
true if this filter would like to examine and
possibly rewrite the content, false otherwise.
public byte[] filter(Request request,
MimeHeaders headers,
byte[] content)
filter in interface Filterrequest - The finished HTTP request.headers - The MIME headers generated by the Handler.content - The output from the Handler that this
Filter may rewrite.
Filter may return
the original content unchanged. The
Filter may return null to indicate
that the FilterHandler should stop processing the
request and should not return any content to the client.
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Version 2.1, Generated 12/30/04 Copyright (c) 2001-2004, Sun Microsystems. |
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