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doc/CHANGES.txt
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Principia Changes
-----------------
Principia 1.4.0
Bugs Fixed
- Undo of transactions for which some records had been removed by
a pack caused objects to become unusable.
- RESPONSE.setCookie failed to set persistent cookies on IE4 browsers.
- RESPONSE.appendCookie failed to append a cookie as documented.
- RESPONSE.expireCookie expired cookies according to RFC2109, which
failed with NS and IE browsers, as they dont follow the RFC.
Features Added
- Added integrated Apache web server preconfigured for Principia.
- A database with default content is now created for new installations.
- A number of permission names were added/rearranged to
consolidate recent security enhancements.
- Improvided expression (expr) support in DTML:
- The special variable, '_', now provides namespace access in
addition to providing access to special "builtin" functions.
'_' and '_vars' are now bound to the same object and _vars
is deprecated.
- Security-aware 'getattr' and 'hasattr' methods have been
added to the special '_' variable.
- New 'render' method for '_' to render expressions in much the
same way that the 'name' tag attribute automatically renders
retrieved objects by calling sub-templates and functions.
Principia 1.3.0
Bugs Fixed
- Custom roles could be added to UserFolders, where
they would be effectively inaccessible.
Features Added
- Added domain-based user authentication
Principia 1.2.0
Bugs Fixed
- Renaming an object when Cut/Pasting it did not actually
change the id of the moved object.
Features Added
- Massive security changes
- All documentation removed from distribution and available
separately on the web site
- Document editing now has controls for wider/narrower and
taller/shorter
- Improved handling of uninstalled products
Principia 1.1.1
Features Added
- Added Cut/Paste, allowing objects to be moved in a
single operation.
Principia 1.1.0
Features Added
- Version information in Control Panel.
- A major optimization of Document objects and other
document templates.
- A new DocumentTemplate 'with' tag.
- Improved security for 'in' and 'tree'. Access to sequence and
tree items are checked. Each of these tags has a new
skip_unautorized flag. If this flag is used, then unauthoized
items are skipped. Otherwise, access to unauthorized items
causes an Unauthorized exception to be raised.
- Tree tags have a new branches_expr attribute that allows an
expression to be used to locate sub-branches.
For example, to display a tree that shows only folders, a tree
tag like::
<!--#tree branches_expr="objectValues(['Folder'])"-->
may be used.
- Acquired acquiring objects can nor acquire from the object
they were accessed in, in addition to the object they were
acquired from.
- Folders have a new permission, 'Access Contents Information',
that exposes the methodsL 'objectIds', 'objectValues',
'objectItems','hasProperty', 'propertyIds',
'propertyValues','propertyItems' to DTML. This permission uses
the 'Shared' role by default.
- Added anchors to the html generated by the
tree tag to automatically jump to a newly
expanded tree item
- The software release no longer includes license files.
Absent (or corrupted) license files are treated as 30-day
evaluations. This means that software may be upgraded
by overlaying a release without worrying about overwriting
license files.
Bugs fixed
- Attributes were sometimes obtained from incorrect objects in
tree tags.
- Authorization checks could sometimes cause incorrect objects to
be acquired.
- The decorations for objects in folder contents lists that show
objects that were modified in sessions were sometimes incorrect
after an undo.
- When used from DTML scripts, Image and File constructors did
not function correctly unless a REQUEST was passed, even though
REQUEST was supposed to be optional.
- Fixed has_role for superuser object
- DTML var tags failes when rendering Python tuples.
- Acquired properties were incorrectly unauthorized.
- Editing of File's failed, due to a file missing from the release.
- Editing folder permissions gave strange results (due to a bad
internal alotment of operations to permissions).
- The shared role was not effective for operations defined in
Python, like objectValues.
- When Principia is used with a dedicated web server
(so the top-level folder URL is "/" and SCRIPT_NAME is
empty), variables like URLx and BASEx were not computed
correctly.
- Pasting did not work in sessions in which no changes were
made.
Principia 1.0.10
Bugs Fixed
- Added has_role method to User objects
Principia 1.0.9
Bugs Fixed
- Calling objectValues from DTML with arguments would fail
Features Added
- REMOTE_USER based authorization added
Principia 1.0.8
Bugs Fixed
- The Paste feature was not accessible.
- File objects were not accessible.
- Cookies would fail for MSIE 3 browsers if no expiration
was given for the cookie.
Features Added
- A new DTML function special variable, _getattr, for getting an
attribute using a computed name. (This works like Python's
getattr function, except that it enforces DTML security rules.)
- A new namespace attribute of the DTML special variable,
'_'.
This can be used with the 'in' tag to introduce new
variables in a section of DTML::
<!--#in expr="_.namespace(x=1, y=2)"-->
<!--#var x-->
<!--#var y-->
<!--#/in-->
Principia 1.0.7
Bugs Fixed
- Installers for both unix and NT now require that the superuser
name and password be supplied during the Principia installation.
- Fixed a bug that could cause the __roles__ of a copied object
to revert to defaults after pasting a copy of it.
- Made permissions settings a bit more tolerant of adding operations to
permissions.
- Checked in some changes that should have been in 1.0.6. The
missing changes cause the total absense of session modification
decorations in 1.0.6. Now, a red diamond (work-zone) symbol is
shown to the right of objects in contents lists for objects
modified in the current session, and a red diamond with a lock
is shown next to objects modified in other sessions.
- DTML tags that used the expr attribute in combination with flag
attributes, as in '<!--#in expr="whatever" mapping-->' were
parsed incorrectly.
- In DTML expressions, expressions like: x.y[i], x.y[:i], and
x.y[i:] were not compiled correctly.
- The newline_to_br formatting attribute in var tags was broken.
- Removed the Last-Modified feature for images and icons that was
introduced in 1.0.6 - NS Communicator apparently has trouble
handling 304 responses according to the HTTP spec ;(
Features Added
- The "View" view for Images now includes view tabs.
- DTML expr expressions can now include newlines.
Newlines and carriage returns are now converted to spaces.
So::
<!--#var expr="1+
2"-->
is equivalent to something like::
<!--#var expr="1+ 2"-->
- Added 'set' method to REQUESTs, so that you can effectively set
variables in DTML. This is especially useful when invoking
objects that acquire and get data from the REQUEST.
For example::
<!--#var expr="REQUEST.set('foo',1)"-->
<!--#var foo-->
Principia 1.0.6
Bugs Fixed
- Objects, especially Documents, were gaining spurious
session locks. Because these locks were spurious, they were not
cleared when a session was saved or discarded. These made
editing of the objects impossible except in a session.
- The contents of the 'doc' directory have been cleaned up
dramatically. The 'FAQ.txt' file has many more listings, the
'INSTALL.txt' and 'PLATFORMS.txt' have been brought up to date,
and the Principia Manager's Guide and DTML Manual are there in
HTML, PDF, and PS formats.
Features Added
- Image and File objects, as well as system defined images
such as object icons now return a Last-Modified http
header. This makes it more likely that those images will
be cached by web clients.
- In addition to the red diamond that marks objects
in contents lists that have changed in the current session,
we now mark objects that have changed in a session other than
the current session (or in any session if not currently working
in a session). The new mark is a red diamond together with a
closed lock. The idea being converyed is that the object has
been modified in a session and that it is locked and cannot be
modified.
- Added internal hook to better coordinate transactions between
Principia and foreign transaction managers such as those
for RDBMS systems accessed by Aqueduct.
- Two new tags are available in DTML:
<!--#comment-->
This text is not included
<!--#/comment-->
<!--#raise StupidError-->
Text of error value, which may use other tags.
<!--#/raise-->
Principia 1.0.5
Bugs Fixed
- Rotor objects would give unexpected results when decoding
licenses using unprintable keys on SGI machines.
Principia 1.0.4
Bugs Fixed
- Certain important database storage structures were not properly
saved.
Principia 1.0.3
New Features
- Proxy roles for Documents were added.
Principia 1.0.2
Bugs Fixed
- Dynamically-linked extension modules didn't work on Linux.
- Manager roles weren't being set on a number of "add" methods.
- The garbage-collection phase of pack failed.
- Evaluation distributions lost the ability to create folders and
standard objects after the process was restarted.
New Features
- Several general optimizations to accomodate large file uploads.
- The size of File and Image objects is shown in their edit
screens.
- File and Image objects are more tolerant of missing content-type
information during upload.
- File and Image objects use a new lazy-load scheme which keeps
their data out of memory until it is absolutely needed.
- Products can provide permissions settings for Folder. For
example, a Product that provides Foo objects, may and probably
should cause a "Add Foo Objects" permission setting to be
defined for folders.
Principia 1.0.1
Bugs Fixed
- Netscape publishing was broken.
- expr="objectValues('Document')" caused an error.
- The DTML 'in' tag variable, 'sequence-query', did not conform
to the DTML documentation and caused extra (harmless)
punctuation in URLs.
- The DTML 'tree' tag didn't correctly fetch objects named in
'header', 'footer', and 'leaves' tag attributes from the current
branch of a hierarchy.
New Features
- Added size and modification-time display to file and image
properties form.
Principia 1.4.0
Bugs Fixed
- Undo of transactions for which some records had been removed by
a pack caused objects to become unusable.
- RESPONSE.setCookie failed to set persistent cookies on IE4 browsers.
- RESPONSE.appendCookie failed to append a cookie as documented.
- RESPONSE.expireCookie expired cookies according to RFC2109, which
failed with NS and IE browsers, as they dont follow the RFC.
Features Added
- Added integrated Apache web server preconfigured for Principia.
- A database with default content is now created for new installations.
- A number of permission names were added/rearranged to
consolidate recent security enhancements.
- Improvided expression (expr) support in DTML:
- The special variable, '_', now provides namespace access in
addition to providing access to special "builtin" functions.
'_' and '_vars' are now bound to the same object and _vars
is deprecated.
- Security-aware 'getattr' and 'hasattr' methods have been
added to the special '_' variable.
- New 'render' method for '_' to render expressions in much the
same way that the 'name' tag attribute automatically renders
retrieved objects by calling sub-templates and functions.
Principia 1.3.0
Bugs Fixed
- Custom roles could be added to UserFolders, where
they would be effectively inaccessible.
Features Added
- Added domain-based user authentication
Principia 1.2.0
Bugs Fixed
- Renaming an object when Cut/Pasting it did not actually
change the id of the moved object.
Features Added
- Massive security changes
- All documentation removed from distribution and available
separately on the web site
- Document editing now has controls for wider/narrower and
taller/shorter
- Improved handling of uninstalled products
Principia 1.1.1
Features Added
- Added Cut/Paste, allowing objects to be moved in a
single operation.
Principia 1.1.0
Features Added
- Version information in Control Panel.
- A major optimization of Document objects and other
document templates.
- A new DocumentTemplate 'with' tag.
- Improved security for 'in' and 'tree'. Access to sequence and
tree items are checked. Each of these tags has a new
skip_unautorized flag. If this flag is used, then unauthoized
items are skipped. Otherwise, access to unauthorized items
causes an Unauthorized exception to be raised.
- Tree tags have a new branches_expr attribute that allows an
expression to be used to locate sub-branches.
For example, to display a tree that shows only folders, a tree
tag like::
<!--#tree branches_expr="objectValues(['Folder'])"-->
may be used.
- Acquired acquiring objects can nor acquire from the object
they were accessed in, in addition to the object they were
acquired from.
- Folders have a new permission, 'Access Contents Information',
that exposes the methodsL 'objectIds', 'objectValues',
'objectItems','hasProperty', 'propertyIds',
'propertyValues','propertyItems' to DTML. This permission uses
the 'Shared' role by default.
- Added anchors to the html generated by the
tree tag to automatically jump to a newly
expanded tree item
- The software release no longer includes license files.
Absent (or corrupted) license files are treated as 30-day
evaluations. This means that software may be upgraded
by overlaying a release without worrying about overwriting
license files.
Bugs fixed
- Attributes were sometimes obtained from incorrect objects in
tree tags.
- Authorization checks could sometimes cause incorrect objects to
be acquired.
- The decorations for objects in folder contents lists that show
objects that were modified in sessions were sometimes incorrect
after an undo.
- When used from DTML scripts, Image and File constructors did
not function correctly unless a REQUEST was passed, even though
REQUEST was supposed to be optional.
- Fixed has_role for superuser object
- DTML var tags failes when rendering Python tuples.
- Acquired properties were incorrectly unauthorized.
- Editing of File's failed, due to a file missing from the release.
- Editing folder permissions gave strange results (due to a bad
internal alotment of operations to permissions).
- The shared role was not effective for operations defined in
Python, like objectValues.
- When Principia is used with a dedicated web server
(so the top-level folder URL is "/" and SCRIPT_NAME is
empty), variables like URLx and BASEx were not computed
correctly.
- Pasting did not work in sessions in which no changes were
made.
Principia 1.0.10
Bugs Fixed
- Added has_role method to User objects
Principia 1.0.9
Bugs Fixed
- Calling objectValues from DTML with arguments would fail
Features Added
- REMOTE_USER based authorization added
Principia 1.0.8
Bugs Fixed
- The Paste feature was not accessible.
- File objects were not accessible.
- Cookies would fail for MSIE 3 browsers if no expiration
was given for the cookie.
Features Added
- A new DTML function special variable, _getattr, for getting an
attribute using a computed name. (This works like Python's
getattr function, except that it enforces DTML security rules.)
- A new namespace attribute of the DTML special variable,
'_'.
This can be used with the 'in' tag to introduce new
variables in a section of DTML::
<!--#in expr="_.namespace(x=1, y=2)"-->
<!--#var x-->
<!--#var y-->
<!--#/in-->
Principia 1.0.7
Bugs Fixed
- Installers for both unix and NT now require that the superuser
name and password be supplied during the Principia installation.
- Fixed a bug that could cause the __roles__ of a copied object
to revert to defaults after pasting a copy of it.
- Made permissions settings a bit more tolerant of adding operations to
permissions.
- Checked in some changes that should have been in 1.0.6. The
missing changes cause the total absense of session modification
decorations in 1.0.6. Now, a red diamond (work-zone) symbol is
shown to the right of objects in contents lists for objects
modified in the current session, and a red diamond with a lock
is shown next to objects modified in other sessions.
- DTML tags that used the expr attribute in combination with flag
attributes, as in '<!--#in expr="whatever" mapping-->' were
parsed incorrectly.
- In DTML expressions, expressions like: x.y[i], x.y[:i], and
x.y[i:] were not compiled correctly.
- The newline_to_br formatting attribute in var tags was broken.
- Removed the Last-Modified feature for images and icons that was
introduced in 1.0.6 - NS Communicator apparently has trouble
handling 304 responses according to the HTTP spec ;(
Features Added
- The "View" view for Images now includes view tabs.
- DTML expr expressions can now include newlines.
Newlines and carriage returns are now converted to spaces.
So::
<!--#var expr="1+
2"-->
is equivalent to something like::
<!--#var expr="1+ 2"-->
- Added 'set' method to REQUESTs, so that you can effectively set
variables in DTML. This is especially useful when invoking
objects that acquire and get data from the REQUEST.
For example::
<!--#var expr="REQUEST.set('foo',1)"-->
<!--#var foo-->
Principia 1.0.6
Bugs Fixed
- Objects, especially Documents, were gaining spurious
session locks. Because these locks were spurious, they were not
cleared when a session was saved or discarded. These made
editing of the objects impossible except in a session.
- The contents of the 'doc' directory have been cleaned up
dramatically. The 'FAQ.txt' file has many more listings, the
'INSTALL.txt' and 'PLATFORMS.txt' have been brought up to date,
and the Principia Manager's Guide and DTML Manual are there in
HTML, PDF, and PS formats.
Features Added
- Image and File objects, as well as system defined images
such as object icons now return a Last-Modified http
header. This makes it more likely that those images will
be cached by web clients.
- In addition to the red diamond that marks objects
in contents lists that have changed in the current session,
we now mark objects that have changed in a session other than
the current session (or in any session if not currently working
in a session). The new mark is a red diamond together with a
closed lock. The idea being converyed is that the object has
been modified in a session and that it is locked and cannot be
modified.
- Added internal hook to better coordinate transactions between
Principia and foreign transaction managers such as those
for RDBMS systems accessed by Aqueduct.
- Two new tags are available in DTML:
<!--#comment-->
This text is not included
<!--#/comment-->
<!--#raise StupidError-->
Text of error value, which may use other tags.
<!--#/raise-->
Principia 1.0.5
Bugs Fixed
- Rotor objects would give unexpected results when decoding
licenses using unprintable keys on SGI machines.
Principia 1.0.4
Bugs Fixed
- Certain important database storage structures were not properly
saved.
Principia 1.0.3
New Features
- Proxy roles for Documents were added.
Principia 1.0.2
Bugs Fixed
- Dynamically-linked extension modules didn't work on Linux.
- Manager roles weren't being set on a number of "add" methods.
- The garbage-collection phase of pack failed.
- Evaluation distributions lost the ability to create folders and
standard objects after the process was restarted.
New Features
- Several general optimizations to accomodate large file uploads.
- The size of File and Image objects is shown in their edit
screens.
- File and Image objects are more tolerant of missing content-type
information during upload.
- File and Image objects use a new lazy-load scheme which keeps
their data out of memory until it is absolutely needed.
- Products can provide permissions settings for Folder. For
example, a Product that provides Foo objects, may and probably
should cause a "Add Foo Objects" permission setting to be
defined for folders.
Principia 1.0.1
Bugs Fixed
- Netscape publishing was broken.
- expr="objectValues('Document')" caused an error.
- The DTML 'in' tag variable, 'sequence-query', did not conform
to the DTML documentation and caused extra (harmless)
punctuation in URLs.
- The DTML 'tree' tag didn't correctly fetch objects named in
'header', 'footer', and 'leaves' tag attributes from the current
branch of a hierarchy.
New Features
- Added size and modification-time display to file and image
properties form.
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