[Htmlparser-developer] Re: Final Statistics from Trek Run

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MessageThe SWT is not a contender for replacing Swing. It may be an =
alternative, applicable in many circumstaces, but a quick look at the =
Sun's Swing connection should dissuade you from assuming that few people =
are using Swing.=20

LOL! I was asking for trouble with that comment :). I guess its just me =
that finds Swing unbearably slow.

I would not endorse trying to make HTMLParser Swing-compatible. These =
are different animals and should stay that way. The notion of providing =
a SAX-like interface is interesting but you should look instead toward =
XML pull-parsers, which are the high-performance alternatives now =
surfacing more widely. There is a JSR =
(http://www.jcp.org/jsr/detail/173.jsp) that is trying to unify a good =
interface for pull-parsing (they're calling it a Streaming API). You'll =
find this link especially intersting (http://www.xmlpull.org/).

I will look into this advice seriously (will start by educating myself =
on XML Pull-parsers).=20

HTMLParser has two fundamental strengths. 1) It's easy to use and =
extend. 2) It's lightning fast.
Don't lose sight of these distinctions. The whole XML community is =
strugling to achieve these goals and hasn't quite gotten there yet. =
There's much to learn from XML, but they are laregely moving in this =
direction.

Its interesting that this should come up - the other day someone was =
suggesting to me if the HTMLParser might not be used for parsing XML..

BTW: JTidy is a serious performance bottleneck in a high-performance =
application.

Good to know that :), havent checked it out myself yet.
Its great to have a knowledgable person like you join this parser =
community. It will be of great value in taking the final steps towards =
stabilizing the API of the parser. The next integration releases would =
focus on incorporating your suggestions, regarding the exception =
handling. Maybe first week of Sep might be a realistic date for the =
release of 1.2 (unless I get loads of time or help).

Regards,
Somik

  ----- Original Message -----=20
  From: Claude Duguay=20
  To: htm...@li...=20
  Sent: Friday, July 12, 2002 1:29 AM
  Subject: RE: [Htmlparser-user] Final Statistics from Trek Run

  The SWT is not a contender for replacing Swing. It may be an =
alternative, applicable in many circumstaces, but a quick look at the =
Sun's Swing connection should dissuade you from assuming that few people =
are using Swing. =20
  HTMLParser has two fundamental strengths. 1) It's easy to use and =
extend. 2) It's lightning fast.
  =20
  Don't lose sight of these distinctions. The whole XML community is =
strugling to achieve these goals and hasn't quite gotten there yet. =
There's much to learn from XML, but they are laregely moving in this =
direction.
  =20
  BTW: JTidy is a serious performance bottleneck in a high-performance =
application.
  =20
  -----Original Message-----
  From: Somik Raha [mailto:so...@ya...]=20
  Sent: Thursday, July 11, 2002 2:25 AM
  To: htm...@li...
  Subject: Re: [Htmlparser-user] Final Statistics from Trek Run

    Hi Craig,
    For example, the renderer built into Swing's JEditorPane expects
    callbacks resulting from well-formed HTML with certain (sometimes
    arbitrary) characteristics. (For example, a
    <head><title>X</title></head> section must exist, and X cannot be =
null).
    It is possible that the formatting of the input HTML into a =
structure
    with these characteristics reduces the parser's performance in order =
to
    produce a better render.
       =20
    Indeed - perhaps a good idea would be to rewrite JEditorPane :) - =
make an open source version, which is better designed. Swing =
compatibility is a real pain - we gave up on that not so far back :). On =
the other hand, I was thinking that SAX compliance would be feasible and =
worth it - I doubt if many people are considering Swing for graphics =
these days, especially with the SWT being out there. But the SAX =
mechanism is quite popular and its worth being able to just switch =
parsers.

    Of course, whether you need to take these considerations into =
account
    depends entirely on your application. The htmlparser seems to lean =
more
    toward the extraction of information rather than its representation, =
and
    the latter is so fraught with ambiguities as to make it a task of a
    different order altogether.

    So true. Like you had mailed sometime back, JTidy does a good job of =
that.
    =20
    Regards,
    Somik
      ----- Original Message -----=20
      From: Craig Raw=20
      To: htm...@li...=20
      Sent: Thursday, July 11, 2002 5:35 PM
      Subject: [Htmlparser-user] RE: [Htmlparser-developer] Final =
Statistics from Trek Run

      Just a point to notice on these tests. The htmlparser, for all =
it's
      merits, is not a direct functional replacement for the Swing =
parser.=20

      For example, the renderer built into Swing's JEditorPane expects
      callbacks resulting from well-formed HTML with certain (sometimes
      arbitrary) characteristics. (For example, a
      <head><title>X</title></head> section must exist, and X cannot be =
null).
      It is possible that the formatting of the input HTML into a =
structure
      with these characteristics reduces the parser's performance in =
order to
      produce a better render.

      Of course, whether you need to take these considerations into =
account
      depends entirely on your application. The htmlparser seems to lean =
more
      toward the extraction of information rather than its =
representation, and
      the latter is so fraught with ambiguities as to make it a task of =
a
      different order altogether.

      -craig

      -----Original Message-----
      From: htm...@li...
      [mailto:htm...@li...] On =
Behalf Of
      Somik Raha
      Sent: 11 July 2002 02:19 AM
      To: htm...@li...;
      htm...@li...
      Subject: Re: [Htmlparser-user] RE: [Htmlparser-developer] Final
      Statistics from Trek Run

      Hi Claude,
      Thanks a ton for all these tests. Do you think you could write an
      article on this that we could put up ?

      Regards
      Somik

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