[tssg-tech] Re: Java Date calculations
- From: Harry Henriques <harry_henriques@xxxxxxxxxxx>
- To: tssg-tech@xxxxxxxxxxxxx
- Date: Wed, 29 Sep 2010 08:28:14 -0700 (PDT)
Hello,
I have just delivered a DateParser from the ROME API to the MessageList
project. This past summer, I used this parser to parse dates in various RSS
feeds. It is a stand-alone module, and is completely decoupled from the rest
of
the ROME API. It should translate nicely into Dalvic Executable Bytecode.
Harry
________________________________
From: Beatrice W. Chaney <bwchaney@xxxxxxxx>
To: tssg-tech@xxxxxxxxxxxxx
Sent: Wed, September 29, 2010 11:08:16 AM
Subject: [tssg-tech] Java Date calculations
Core Java libraries (part of Android SDK) include sophisticated capabilities
to parse, convert and format dates, including diffs and getting hte day of the
week, etc...
http://developer.android.com/reference/java/util/Calendar.html
So, I don't believe it is necessary for us to 'hand-parse' dates using regular
expressions in this case (except for 'Ides of March" , etc :-)
Bea
Jim Cant wrote:
Message body
>This would be a good way to be able to generate Java Date objects which might
>be
>useful if we wanted to determine day of week to calculate the difference
>between
>two dates.
>
>but then .... what if BEL is presenting their dates in a way that won't parse
>but would still be human readable? (Probably unlikely). That would argue for
>just treating them as Strings. After all, "The Fourth of July" and "The ides
>of
>March" are meaningful dates. ;-)
>
>Interesting design question.
>
>jim
>
>
>From: Rob
>Sent: Tuesday, September 28, 2010 5:49 PM
>To: tssg-tech@xxxxxxxxxxxxx
>Subject: [tssg-tech] Re: <link> "Working with XML on Android"
>
>
>Regular Expression Library
>
>Regarding regular expressions --- extracting time and date information,
>markup
>code.
>
>
>There are single regular expression statements that can identify numerous time
>and date formats at the following site:
>http://regexlib.com/DisplayPatterns.aspx
>
>There is a separate section on this site dedicated to markup code.
>
>I was thinking that regular expressions may be helpful in identifying dates
>and
>times that occur within the description portion of the events.
>RegEx-identified
>times could be confirmed by the user as being a start or end time, etc., and
>then extracted programmtically to be entered into the local BEL calendar. The
>goal of the regEx would be to identify any reasonably formatted time and date
>and to convert it to match “calendar” interface methods. I see it working
>much
>like a spell checker, scanning text and prompting the user when it finds
>mathches.
>
>I don’t see this as a clean way to obtain event details, but also don’t see
>another approach at the moment.
>
>Rob
>
>
>
________________________________
>From:tssg-tech-bounce@xxxxxxxxxxxxx [mailto:tssg-tech-bounce@xxxxxxxxxxxxx] On
>Behalf Of Beatrice W. Chaney
>Sent: Tuesday, September 28, 2010 5:10 PM
>To: tssg-tech@xxxxxxxxxxxxx
>Subject: [tssg-tech] Re: <link> "Working with XML on Android"
>
>A few explanations:
>1. The http://validator.w3.org/ site is owned by the W3C standards
>organization
>(World Wide Web Consortium), which manages the HTML and XML industry
>standards,
>as a service to web developers.
>To validate a site just click the above link and enter the URL of the site you
>would like to validate, in this case http://www.bostoneventslist.com/ and
>click
>on 'Check'. It comes up with 70 errors.
>
>To see what those errors mean, go to http://www.bostoneventslist.com/ and
>choose
>the menu View -> Page Source. This displays the actual HTML generated by the
>site and you can see the errors (validator gives line numbers)
>Most of the validation complaints are non-conformant XHTML syntax (its header
>specifies 'strict') but some are mis-matched end tags such as end tags
></script>
>found without a preceding <script> tag, etc...
>
>2. Unfortunately, the fact that the RSS validates (it does) does not mean that
>the content validates, as the RSS format just wraps the content with all the <
>and >, etc.. converted to < and > (the control characters are 'escaped')
>precisely to avoid being thrown off if the content is invalid. RSS feeds must
>validate.
>
>To get the XML format of the content fragments, we first have to run them
>through a 'regular expression'
>(http://en.wikipedia.org/wiki/Regular_expression)
>that replaces the <, >, etc... with < and > , ... again, and then try to
>parse
>these fragments as XML.
>
>3. To view the RSS XML, just enter the URL:
>http://www.bostoneventslist.com/rss.xml in your browser.
>
>4. The fact that the http://www.bostoneventslist.com/ does not validate is
>not
>a direct cause of a potential issue with the content items format, as it
>appears
>content items are generated dynamically (do not show up in the source). So, we
>still need to determine whether the unescaped content items are well-formed,
>and if not 'tweak' them to be well-formed. While RSS is guaranteed to
>validate,
>I don't believe we can rely on content (that is, the
><description></description>
>elements) being well-formed.
>TODO: write or find an 'unescape' regular expression.
>
>Bea
>
>Jim Cant wrote:
>
>
>Hey, good news!
>
>How did you validate it?
>
>jim
>
________________________________
>Date: Tue, 28 Sep 2010 11:11:08 -0700
>From: jcarwellos@xxxxxxxxx
>Subject: [tssg-tech] Re: <link> "Working with XML on Android"
>To: tssg-tech@xxxxxxxxxxxxx
>BTW, the RSS validated with no errors.
>
________________________________
>Julie (Dingee) Carwellos
>Web and IT Project Analyst, User Experience and Interaction Designer
>LinkedIn- http://www.linkedin.com/in/jdingeecarwellos
>
>--- On Tue, 9/28/10, Julie Carwellos <jcarwellos@xxxxxxxxx> wrote:
>
>From: Julie Carwellos <jcarwellos@xxxxxxxxx>
>Subject: [tssg-tech] Re: <link> "Working with XML on Android"
>To: tssg-tech@xxxxxxxxxxxxx
>Date: Tuesday, September 28, 2010, 6:06 PM
>Bea,
>
>It isn't; I get a consistent 11 errors for each single-event web page (using
>FireBug to validate HTML).
>
>Additionally, each event page is styled with TABLEs, rather than floating
>DIVs,
>so we can't use a handheld.css style sheet to load the URL into a WebView and
>have only the event information display (using display:none; for the outer
>columns).
>
>
>-julie
>
________________________________
>Julie (Dingee) Carwellos
>Web and IT Project Analyst, User Experience and Interaction Designer
>LinkedIn - http://www.linkedin.com/in/jdingeecarwellos
>
>--- On Tue, 9/28/10, Beatrice W. Chaney <bwchaney@xxxxxxxx> wrote:
>
>From: Beatrice W. Chaney <bwchaney@xxxxxxxx>
>Subject: [tssg-tech] Re: <link> "Working with XML on Android"
>To: tssg-tech@xxxxxxxxxxxxx
>Date: Tuesday, September 28, 2010, 4:18 PM
>Hi,
>I suspect (but haven't verified it) that the BostonEventList data might
>possibly
>not be well-formed.
>I ran the site through the W3 validator http://validator.w3.org/ some time ago
>(and again now), and it comes up with a number of errors. Having a site be
>valid
>XHTML is a critical prerquisite to getting on top of Google's list.
>
>If this is the case (first, need to verify that well-formedness is really the
>problem) there are tidy-up utilities available, but we'd have to see whether
>they are suitable for Android.
>
>
>Thanks,
>Bea
>
>Harry Henriques wrote:
>Hello,
>
>I think Bea referenced the IBM website regarding RSS parser alternatives. I
>downloaded the application from the website, and massaged the files. I was
>able
>to get the application to successfully create an apk and load successfully
>into
>the Android Emulator. The application is partially working, but I could use
>some help debugging it. The application doesn't parse the BostonEventsList.
>For some reason, it stops before displaying a ListView.
>
>I delivered the work I have finished to the SVN Repository in a Android
>project
>called MessageList.
>
>I will continue to work on it as time permits. I've only just begun to fight.
>
>Regards,
>Harry Henriques
>Java Developer
>
>=
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