9:42 a.m.
I recently committed (as discussed with Pete) some code to
org.jboss.seam.rss that enables you to
use JSF tags for creating rss/atom feeds. It is based around the
YARFRAW (http://yarfraw.sourceforge.net/)
library. The only other new dependency is commons-lang. There is a
quick-and-dirty build.xml included in
the source dir that requires some modification, I didn't want to mess
with the main build structure while
it was in the "collecting feedback" stage.
Any use for it in the trunk? Any considerations/feedback before
expanding on it? It is currently very simplified,
using a parent-child Feed -> Entries structure with several
simplifications (only one author, name only etc).
usage is in the lines of
<r:feed
xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:r="http://jboss.com/products/seam/rss"
title="#{rss.feed.title}"
uid="#{rss.feed.uid}"
subtitle="#{rss.feed.subtitle}"
updated="#{rss.feed.updated}"
link="#{rss.feed.link}">
<ui:repeat value="#{rss.feed.entries}" var="entry">
<r:entry
uid="#{entry.uid}"
title="#{entry.title}"
link="#{entry.link}"
author="#{entry.author}"
summary="#{entry.summary}"
published="#{entry.published}"
updated="#{entry.updated}"
/>
</ui:repeat>
</r:feed>
Some questions that came to mind:
* Delivery mechanism: I currently use the document store. Any better
alternatives? Some sort of flush + response complete?
* Most attributes support both text and html formats. Should there be
1. One "textFormat"-swith at feed level
2. titleFormat and title, subtitleFormat and subtitle etc..
3. Complex tag structure with <r:title
format="html">title</r:title> etc?
I'm currently leaning towards 1.
* What level of the atom specs to support? All of it? At least r:link,
r:author, r:contributor, r:category, r:source, r:generator would
be required (or whatever multi-attribute 0:n stuff are nested in the
feed/entry elements in the specs)
* Any usage for it in wiki? I haven't really looked that much as the
wiki, it seems to have an own feed servlet and perhaps some cacheing
requirements
---
Nik
10:10 a.m.
Nik,
It's great to see us putting a focus on native feed integration since
it is only one of the most common tasks in modern web-based
applications. Granted, this is currently possible with Facelets doing
it the manual way, shown below. But that does require a lot of manual
labor (most likely of the copy-paste variety). I would like to see if
we can limit the number of tags because a lot of tags gets closer to
doing it the manual way. Perhaps we can use the attributes for text
only and facets for non-text (just a thought).
I'm not sure I understand why you need the document store, though.
That is typically reserved for sending a binary format over the wire
needing disposition headers. An RSS feed is just an XML stream and
therefore you simply need to set the contentType on the JSF response.
<?xml version="1.0" encoding="UTF-8"?>
<feed version="0.3" xmlns="http://purl.org/atom/ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:f="http://java.sun.com/jsf/core"
xml:lang="en">
<f:view contentType="application/atom+xml">
<title>Sample feed</title>
<link rel="alternate" type="text/html"
href="http://example.com/feed"/>
<modified>2008-04-04T00:00:00Z</modified>
<tagline>Sample feed</tagline>
<id>tag:example.com,2008://1</id>
<generator url="http://seamframework.org/"
version="2.0.1.GA">Seam</generator>
<copyright>Copyright (c) 2008, Dan Allen</copyright>
<entry>
<title>Hi there!</title>
<link rel="alternate" type="text/html"
href="http://example.com/1" />
<modified>2008-04-04T00:00:00Z</modified>
<issued>2008-04-04T00:00:00Z</issued>
<id>tag:example.com,2008://1.87</id>
<created>008-02-24T04:30:06Z</created>
<summary type="text/plain">Hi there</summary>
<author>
<name>Dan Allen</name>
</author>
<dc:subject>Subject</dc:subject>
<content type="text/html" mode="escaped"
xml:lang="en"
xml:base="http://example.com">
Hi there
</content>
</entry>
</f:view>
</feed>
On Tue, Aug 26, 2008 at 10:42 AM, Nicklas Karlsson <nickarls(a)gmail.com> wrote:
I recently committed (as discussed with Pete) some code to
org.jboss.seam.rss that enables you to
use JSF tags for creating rss/atom feeds. It is based around the
YARFRAW (http://yarfraw.sourceforge.net/)
library. The only other new dependency is commons-lang. There is a
quick-and-dirty build.xml included in
the source dir that requires some modification, I didn't want to mess
with the main build structure while
it was in the "collecting feedback" stage.
Any use for it in the trunk? Any considerations/feedback before
expanding on it? It is currently very simplified,
using a parent-child Feed -> Entries structure with several
simplifications (only one author, name only etc).
usage is in the lines of
<r:feed
xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:r="http://jboss.com/products/seam/rss"
title="#{rss.feed.title}"
uid="#{rss.feed.uid}"
subtitle="#{rss.feed.subtitle}"
updated="#{rss.feed.updated}"
link="#{rss.feed.link}">
<ui:repeat value="#{rss.feed.entries}" var="entry">
<r:entry
uid="#{entry.uid}"
title="#{entry.title}"
link="#{entry.link}"
author="#{entry.author}"
summary="#{entry.summary}"
published="#{entry.published}"
updated="#{entry.updated}"
/>
</ui:repeat>
</r:feed>
Some questions that came to mind:
* Delivery mechanism: I currently use the document store. Any better
alternatives? Some sort of flush + response complete?
* Most attributes support both text and html formats. Should there be
1. One "textFormat"-swith at feed level
2. titleFormat and title, subtitleFormat and subtitle etc..
3. Complex tag structure with <r:title
format="html">title</r:title> etc?
I'm currently leaning towards 1.
* What level of the atom specs to support? All of it? At least r:link,
r:author, r:contributor, r:category, r:source, r:generator would
be required (or whatever multi-attribute 0:n stuff are nested in the
feed/entry elements in the specs)
* Any usage for it in wiki? I haven't really looked that much as the
wiki, it seems to have an own feed servlet and perhaps some cacheing
requirements
---
Nik
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--
Dan Allen
Software consultant | Author of Seam in Action
http://mojavelinux.com
http://mojavelinux.com/seaminaction
NOTE: While I make a strong effort to keep up with my email on a daily
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you feel that it did not reach my attention.
2:51 p.m.
Granted, this is currently possible with Facelets doing
it the manual way, shown below.
Now that you mention it, a facelets page does look a lot like a rss
feed ;-) The custom tag has the
advantage of being able to serve feeds in different formats with a
simple change in an attribute and then left to the
underlying feed implementation...
I would like to see if
we can limit the number of tags because a lot of tags gets closer to
doing it the manual way. Perhaps we can use the attributes for text
only and facets for non-text (just a thought).
Most functionality (single link, single author) could be accomplished
with the feed/entry pair. Multiple
links could then be offered as "advanced" functionality with ui:repeat
and r:link
I'm not sure I understand why you need the document store,
though.
That is typically reserved for sending a binary format over the wire
needing disposition headers. An RSS feed is just an XML stream and
therefore you simply need to set the contentType on the JSF response.
Yep, it was a leftover from the excel module, committed an update that
does it the normal way
---
Nik
5933
days inactive
5933
days old
2 comments
2 participants
participants (2)
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Dan Allen -
Nicklas Karlsson