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Fixes and Enhancements since Version 0.5 alpha 2 |
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Changed, Enhanced, or Newly Deprecated Features |
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- The 'provides' keyword argument to various 'peak.binding' APIs has been |
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renamed to 'offerAs', and it must be a sequence of configuration keys. |
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(Previously, it accepted either a single key or a tuple of keys.) |
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The signature of 'binding.Constant()' was changed as well; the first |
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positional argument is now the constant value, and 'offerAs' is now a |
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keyword argument. (Previously, 'provides' was the first positional argument |
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of 'binding.Constant()'.) The 'registerProvider()' method of |
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'config.IConfigurable()' also now accepts only a single configuration key, |
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as does 'EigenRegistry.register()'. |
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| Fixes and Enhancements since Version 0.5 alpha 1 |
Fixes and Enhancements since Version 0.5 alpha 1 |
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| Changed, Enhanced, or Newly Deprecated Features |
Changed, Enhanced, or Newly Deprecated Features |
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- Added a 'shellcmd:' URL scheme that returns a function that calls |
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'os.system()' on the body of the URL. It's intended for use as a command |
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factory, as is needed by the 'URLChecker' periodic task. |
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- You can now define adapters from arbitrary types to 'binding.IBindingNode', |
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and thus be able to use them as part of a component hierarchy - without |
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needing to directly add 'getParentComponent()' or 'getComponentName()' |
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methods to them. |
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- Added experimental 'invoke.c' script for POSIX-ish platforms with funky |
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'#!' support, or lack thereof. |
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'invoke' is designed to be used like this:: |
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#!/usr/local/bin/invoke peak somearg otherarg... |
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This should work on most sane platforms with a long-enough commandline. |
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(See "this page":http://homepages.cwi.nl/~aeb/std/hashexclam-1.html for |
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details on the insanely incompatible ways different Unixes interpret '#!' |
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lines.) |
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The script is not currently built or installed by setup.py. On the |
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platforms it's targeted at, you should be able to build it with:: |
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gcc -o invoke invoke.c |
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(Yes, it really is that simple of a script.) |
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- Added a ZConfig schema for 'running.commands.EventDriven' applications, |
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a ZConfig component definition for adaptive tasks, and a running shortcut |
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called 'EventDriven'. |
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It should now be possible to do this:: |
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#!/usr/bin/env peak EventDriven |
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at the top of a ZConfig file formatted according to the new schema, and |
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have it run. There are two periodic tasks that can be configured and |
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run from such a file: 'CleanupFiles' and 'URLChecker'. 'CleanupFiles' will |
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delete files matching a pattern that are older than a certain age, while |
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'URLChecker' will check to see if the target of a naming system URL is |
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up/available/working, and if not, runs a command to restart it. As an |
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amusing demo, try specifying a 'file:' URL with a 'shellcmd:touch theFile' |
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to recreate the file, then add a 'CleanupFiles' that deletes the file the |
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checker looks for. This can be hours (well, minutes) of exciting fun as you |
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watch the dueling daemons undoing each others' work. |
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- Added 'zconfig.schema' URL scheme that loads an enhanced ZConfig schema |
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object that can act as a command line interpreter using the 'peak' script. |
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To use it, run 'peak zconfig.schema:urlToSchema urlOfConfig'. Or, add |
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a line like this:: |
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#!/usr/bin/env peak zconfig.schema:pkgfile:some.package/schema.xml |
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to the top of a configuration file, and make the configuration file |
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executable. Note that the schema specified must convert to an object |
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that's usable with the commands bootstrap framework. Also note that |
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if you have a local PEAK_CONFIG file, you can add a 'peak.running.shortcuts' |
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entry to shorten the URL reference in your #! line. E.g.:: |
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#!/usr/bin/env peak mySchema |
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will suffice if you have defined 'peak.running.shortcuts.mySchema' as |
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'naming.LinkRef("zconfig.schema:pkgfile:some.package/schema.xml")'. |
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There is also a 'peak ZConfig urlOfSchema urlOfConfig' variant, that was |
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added to support putting '#!/usr/bin/env peak ZConfig' at the top of |
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schema files, but unfortunately that's not valid XML. |
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- Standardized file-based URL syntaxes (e.g logfiles and lockfiles) to |
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follow RFC 1738/2396, and Python 'urllib'. This shouldn't affect much |
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besides the canonical forms of the URLs. Added 'pkgfile:some.pkg/filepath' |
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URL syntax for ease of referring to files near modules. (A convenience |
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intended mainly for referencing ZConfig schemas.) |
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- Added the UML 1.4 metamodel, and thus the ability to load UML 1.4 |
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models encoded in XMI 1.1. |
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- Added support in the mof2py code generator for "unprefixing" enumerated |
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values, so that UML and other metamodels' enumerations work correctly |
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when loading from XMI. Also, mof2py no longer emits 'config.setupModule()' |
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calls in generated code, as in practice they are not needed. |
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- Running 'peak test' from the command line is roughly equivalent to running |
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'unittest.py', except that the test suite defaults to the PEAK test suite. |
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You can, however run any test suite from the command line with a dotted |
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module/attribute path, e.g 'peak test foo.bar.test_suite'. |
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| - 'binding.Acquire()' now accepts a 'default' value argument, and |
- 'binding.Acquire()' now accepts a 'default' value argument, and |
| 'binding.New()' no longer accepts the 'bindToOwner' flag. |
'binding.New()' no longer accepts the 'bindToOwner' flag. |
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| also been removed, as they were based on 'isImplementedBy()'. |
also been removed, as they were based on 'isImplementedBy()'. |
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| - REMOVED ability to use '__implements__' and '__class_implements__' to |
- REMOVED ability to use '__implements__' and '__class_implements__' to |
| declare support for interfaces. Use 'implements()', 'classProvides()', |
declare support for interfaces. Use 'protocols.advise()' or a related |
| 'directlyProvides()', 'moduleProvides()', etc. to do this now; they |
API to do this now. The 'protocols' package is available automatically |
| are now available automatically from 'peak.api'. Similarly, the ability |
from 'peak.api'. |
| to use 'isImplementedBy()' with interfaces declared by PEAK is REMOVED. |
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| You can still use 'isImplementedBy()' with Zope interfaces, of course, |
Similarly, the ability to use 'isImplementedBy()' with interfaces declared |
| but we recommend you switch to 'adapt()', which will work with both PEAK |
by PEAK is REMOVED. You can still use 'isImplementedBy()' with Zope |
| and Zope interfaces. |
interfaces, of course, but we recommend you switch to 'adapt()', which |
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should work with both PEAK and Zope interfaces. |
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| - Replaced all use of 'zope.interface' with 'protocols' package because |
- Replaced all use of 'zope.interface' with 'protocols' package because |
| the 'protocols' package: |
the 'protocols' package: |
| * uses adaptation as the fundamental approach to dealing with interfaces, |
* uses adaptation as the fundamental approach to dealing with interfaces, |
| and avoids the use of 'isImplementedBy()'. In the *rare* case that you |
and avoids the use of 'isImplementedBy()'. In the *rare* case that you |
| need to introspect rather than adapt, you can always call adapt() and |
need to introspect rather than adapt, you can always call adapt() and |
| check the result. |
check the result. (But introspection usually means that you're using |
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interfaces as a form of metadata; it's better to create an explicit |
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interface that provides the metadata you seek, and adapt to that |
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interface, than to use interfaces as data.) |
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| Most of these features are unavailable in 'zope.interface', and some have |
Most of these features are unavailable in 'zope.interface', and some have |
| been declared by the Zope Pope to be unacceptable or undesirable features |
been declared by the Zope Pope to be unacceptable or undesirable features |
| about this, as they are part of the naming package's extensibility |
about this, as they are part of the naming package's extensibility |
| framework.) |
framework.) |
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| - 'EigenRegistry' and 'PropertyMap' no longer attempt to figure out whether |
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| implied (i.e. inherited) interfaces are more or less general with respect |
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| to a previous registration. This was behavior that emulated Zope adapter |
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| registries, but what we really wanted was more akin to a Zope "type" |
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| registry. The only parts of the test suite that used the old behavior |
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| were the tests specifically written to ensure that behavior! |
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| - 'binding.bindTo()' now accepts a 'default=' argument, whose value will be |
- 'binding.bindTo()' now accepts a 'default=' argument, whose value will be |
| used in case of a 'NameNotFound' error. |
used in case of a 'NameNotFound' error. |
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| Corrected Problems |
Corrected Problems |
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- Fixed a problem in ZConfig 'schema.dtd'; I used 'PCDATA' where I should've |
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used 'CDATA'. |
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- Fixed a problem with 'binding.supertype()' not working correctly if the MRO |
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it was searching contained a "classic" class. Now 'supertype()' skips any |
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classic classes it finds. (It probably should be rewritten entirely.) |
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- Fixed misc. problems with 'fromZConfig()' component constructor |
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- Fixed source distributions missing essential setup files |
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- Fixed a problem with assembly events, where a parent component that didn't |
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need assembly notification, wouldn't ever notify its children of assembly |
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if they requested the notification after the parent had already received |
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it. |
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- Fixed a bug in automatic metaclass generation that caused extra unneeded |
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metaclasses to be generated. |
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| - Fixed 'naming.lookup()' and related APIs not setting the parent component |
- Fixed 'naming.lookup()' and related APIs not setting the parent component |
| of created objects without an explicitly supplied 'creationParent' keyword |
of created objects without an explicitly supplied 'creationParent' keyword |
| argument. This used to "sort of work" when we had implicit configuration |
argument. This used to "sort of work" when we had implicit configuration |
Diff of /PEAK/CHANGES.txt
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Revision Log