THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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| Excerpt |
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I'm |
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very |
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proud |
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to |
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announce |
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that |
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the |
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next |
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major |
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release |
...
of |
...
Tapestry, |
...
release |
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5.2, |
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is |
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now |
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available |
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as |
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...
...
...
. |
This is the first stable release of Tapestry since 5.1.0.5
...
(back
...
in
...
April
...
2009),
...
which
...
is
...
far
...
too
...
long
...
a
...
cycle.
...
You
...
might
...
wonder:
...
what's
...
been
...
the
...
holdup?
...
The
...
answer,
...
for
...
myself
...
personally,
...
is
...
that
...
I've
...
been
...
using
...
Tapestry
...
on
...
two
...
very,
...
very
...
different
...
applications
...
for
...
two
...
very,
...
very
...
different
...
clients
...
and
...
I've
...
been
...
updating
...
Tapestry
...
to
...
embrace
...
the
...
real
...
world
...
concerns
...
of
...
both
...
of
...
them.
...
At
...
the
...
same
...
time,
...
I've
...
done
...
about
...
a
...
dozen
...
public
...
and
...
private
...
Tapestry
...
training
...
sessions
...
and
...
gathered
...
reams
...
of
...
input
...
from
...
my
...
students.
...
Let's
...
talk
...
about
...
some
...
of
...
the
...
major
...
enhancements
...
in
...
this
...
release:
...
Removal
...
of
...
Page
...
Pooling
...
Prior
...
versions
...
of
...
Tapestry
...
used
...
a
...
page
...
pool
...
;
...
for
...
each
...
page,
...
Tapestry
...
would
...
track
...
multiple
...
instances
...
of
...
the
...
page,
...
binding
...
one
...
page
...
instance
...
to
...
a
...
particular
...
request.
...
This
...
was
...
an
...
important
...
part
...
of
...
Tapestry's
...
appeal
...
...
...
all
...
the
...
issues
...
related
...
to
...
multi-threading
...
were
...
taken
...
over
...
by
...
the
...
framework,
...
and
...
you
...
could
...
code
...
your
...
pages
...
and
...
components
...
as
...
simple
...
POJOs,
...
without
...
worrying
...
about
...
the
...
threading
...
issues
...
caused
...
by
...
running
...
inside
...
a
...
servlet
...
container.
...
Unfortunately
...
pages
...
are
...
big
...
:
...
it's
...
not
...
just
...
one
...
object
...
but
...
instead
...
the
...
root
...
of
...
a
...
large
...
tree
...
of
...
objects:
...
components
...
and
...
templates,
...
bindings
...
for
...
component
...
parameters,
...
component
...
resources,
...
and
...
all
...
the
...
extra
...
infrastructure
...
(lists
...
and
...
maps
...
and
...
such)
...
to
...
tie
...
it
...
together.
...
Some
...
of
...
the
...
largest
...
Tapestry
...
projects
...
have
...
hit
...
memory
...
problems
...
when
...
they
...
combined
...
deeply
...
componentized
...
pages
...
with
...
large
...
numbers
...
of
...
parallel
...
threads.
...
Tapestry
...
5.2
...
rewrites
...
the
...
rules
...
here;
...
only
...
a
...
single
...
page
...
tree
...
is
...
now
...
needed
...
for
...
each
...
page;
...
the
...
page
...
and
...
component
...
classes
...
have
...
an
...
extra
...
transformation
...
step
...
that
...
moves
...
per-request
...
data
...
out
...
of
...
the
...
objects
...
themselves
...
and
...
into
...
a
...
per-thread
...
Map
...
object.
...
Now,
...
any
...
number
...
of
...
requests
...
can
...
operate
...
at
...
the
...
same
...
time,
...
without
...
requiring
...
additional
...
page
...
instances.
...
Even
...
better,
...
the
...
old
...
page
...
pooling
...
mechanism
...
included
...
some
...
locking
...
and
...
blocking
...
that
...
also
...
gets
...
jettisoned
...
in
...
the
...
new
...
approach.
...
It's
...
just
...
a
...
big
...
win
...
all
...
around.
...
Live
...
Service
...
Reloading
...
People
...
love
...
the
...
ability
...
to
...
change
...
page
...
and
...
component
...
classes
...
in
...
a
...
Tapestry
...
application
...
and
...
see
...
the
...
changes
...
immediately;
...
prior
...
to
...
5.2
...
the
...
same
...
people
...
would
...
be
...
disappointed
...
that
...
they
...
couldn't
...
change
...
their
...
services
...
and
...
see
...
changes
...
just
...
as
...
immediately.
...
Tapestry
...
5.2
...
eliminates
...
that
...
restriction
...
in
...
most
...
cases.
...
This
...
is
...
super
...
handy
...
for
...
services
...
such
...
as
...
DAOs
...
(data
...
access
...
objects)
...
where
...
it
...
is
...
now
...
possible
...
to
...
tweak
...
a
...
Hibernate
...
query
...
and
...
see
...
the
...
results
...
as
...
immediately
...
as
...
changing
...
some
...
content
...
in
...
a
...
template.
...
This
...
is
...
another
...
Tapestry
...
feature
...
that
...
you'll
...
find
...
you
...
can't
...
live
...
without
...
once
...
you
...
use
...
it
...
the
...
first
...
time!
...
ClassTransformation
...
API
...
Improvements
...
At
...
the
...
heart
...
of
...
Tapestry
...
is
...
the
...
Class
...
Transformation
...
API;
...
the
...
extensible
...
pipeline
...
that
...
is
...
the
...
basis
...
for
...
how
...
Tapestry
...
transforms
...
simple
...
POJOs
...
into
...
working
...
components.
...
Prior
...
to
...
5.2,
...
if
...
you
...
wanted
...
to
...
do
...
any
...
interesting
...
transformations,
...
you
...
had
...
to
...
master
...
the
...
...
psuedo-Java
...
language.
...
Tapestry
...
5.2
...
reworks
...
the
...
API;
...
it
...
is
...
now
...
possible
...
to
...
do
...
all
...
kinds
...
of
...
interesting
...
transformations
...
in
...
strict
...
Java
...
code;
...
Javassist
...
has
...
been
...
walled
...
off,
...
with
...
an
...
eventual
...
goal
...
to
...
eliminate
...
it
...
entirely.
...
Query
...
Parameter
...
Support
...
Tapestry
...
traditionally
...
has
...
stored
...
information
...
in
...
the
...
HTTP
...
request
...
path.
...
For
...
example,
...
a
...
URL
...
might
...
be
...
/viewaccount/12345
...
;
...
the
...
viewaccount
...
part
...
of
...
the
...
URL
...
is
...
the
...
name
...
of
...
a
...
page,
...
and
...
the
...
12345
...
part
...
is
...
the
...
ID
...
of
...
an
...
Account
...
object.
...
Tapestry
...
calls
...
the
...
latter
...
part
...
the
...
page
...
activation
...
context
...
(which
...
can
...
contain
...
one
...
or
...
more
...
values).
...
That
...
works
...
well
...
when
...
the
...
a
...
page
...
has
...
a
...
fixed
...
set
...
of
...
values
...
for
...
the
...
page
...
activation
...
context,
...
but
...
not
...
so
...
well
...
when
...
the
...
values
...
may
...
vary.
...
For
...
instance,
...
you
...
may
...
be
...
doing
...
a
...
search
...
and
...
want
...
to
...
store
...
optional
...
query
...
parameters
...
to
...
identify
...
the
...
query
...
term
...
or
...
the
...
page
...
number.
...
Tapestry
...
5.2
...
adds
...
the
...
@
...
...
annotation
...
that
...
automates
...
the
...
process
...
of
...
gathering
...
such
...
data,
...
encoding
...
that
...
data
...
into
...
URLs
...
as
...
query
...
parameters,
...
and
...
making
...
it
...
available
...
in
...
subsequent
...
requests.
...
Testing
A lot of work has gone into Tapestry's
...
testing
...
support,
...
especially
...
the
...
base
...
classes
...
that
...
support
...
integration
...
testing
...
using
...
...
.
...
The
...
new
...
base
...
classes
...
make
...
it
...
easy
...
to
...
write
...
test
...
cases
...
that
...
work
...
independently,
...
or
...
as
...
part
...
of
...
a
...
larger
...
test,
...
automatically
...
starting
...
and
...
stopping
...
Selenium
...
and
...
Jetty
...
as
...
appropriate.
...
Further,
...
Tapestry
...
expands
...
on
...
Selenium's
...
failure
...
behavior,
...
so
...
that
...
failures
...
result
...
in
...
a
...
capture
...
of
...
the
...
page
...
contents
...
as
...
both
...
HTML
...
and
...
a
...
PNG
...
image
...
file.
...
It
...
is
...
simply
...
much
...
faster
...
and
...
much
...
easier
...
to
...
write
...
real,
...
useful
...
tests
...
for
...
Tapestry.
...
JSR-303
...
Support
...
Tapestry
...
now
...
supports
...
the
...
...
...
JSR,
...
converting
...
the
...
standard
...
validation
...
annotations
...
into
...
client-side
...
and
...
server-side
...
validations.
...
Documentation
Tapestry's
...
documentation
...
has
...
always
...
been
...
a
...
challenge;
...
for
...
Tapestry
...
5.2
...
we've
...
been
...
doing
...
a
...
massive
...
rework;
...
doing
...
a
...
better
...
job
...
of
...
getting
...
you
...
started
...
using
...
Tapestry;
...
it's
...
still
...
a
...
work
...
in
...
progress,
...
but
...
since
...
it's
...
based
...
on
...
a
...
live
...
...
wiki
...
(and
...
no
...
longer
...
tied
...
to
...
the
...
release
...
process)
...
the
...
documentation
...
is
...
free
...
to
...
quickly
...
evolve.
...
Better
...
yet,
...
you
...
don't
...
have
...
to
...
be
...
a
...
committer
...
to
...
write
...
documentation
...
...
...
just
...
sign
...
your
...
...
...
...
...
.
And in terms of exhaustive guides ...
...
Igor
...
Drobiazko's
...
book
...
is
...
being
...
translated
...
from
...
German
...
to
...
English
...
as
...
...
...
...
...
.
Summary
I'm
...
very
...
proud
...
of
...
what
...
we've
...
accomplished
...
over
...
the
...
last
...
18
...
months;
...
we've
...
added
...
new
...
committers,
...
new
...
documentation,
...
and
...
lots
...
of
...
new
...
features.
...
We
...
even
...
have
...
a
...
fancy
...
new
...
logo,
...
and
...
a
...
new
...
motto:
...
Code
...
Less,
...
Deliver
...
More
...
.
...
Tapestry
...
5
...
was
...
designed
...
so
...
that
...
it
...
would
...
be
...
possible
...
to
...
make
...
big
...
improvements
...
to
...
the
...
internals
...
and
...
add
...
new
...
features
...
to
...
the
...
framework
...
without
...
impacting
...
existing
...
users
...
and
...
applications;
...
Tapestry
...
5.2
...
has
...
validated
...
that
...
design
...
and
...
philosophy.
...
It
...
delivers
...
a
...
lot
...
of
...
punch
...
in
...
a
...
non-disruptive
...
way.
...
So,
...
if
...
you
...
are
...
looking
...
for
...
a
...
high-productivity,
...
high-performance
...
web
...
framework
...
that
...
doesn't
...
get
...
in
...
your
...
way,
...
it's
...
a
...
great
...
time
...
to
...
take
...
a
...
closer
...
look
...
at
...
Tapestry!