| Fixes and Enhancements since Version 0.5 alpha 1 |
Fixes and Enhancements since Version 0.5 alpha 3 |
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| Changed, Enhanced, or Newly Deprecated Features |
- Added 'ref:factory@addr' URL scheme that maps to a corresponding |
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'naming.Reference("factory",["addr"])'. 'factory' can be either a dotted |
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import string referencing a 'naming.IObjectFactory', or you can define |
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a factory in the 'peak.naming.factories' property space. |
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- Added a 'zconfig.schema' factory, so that 'ref:zconfig.schema@streamURL' |
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will load a schema loader. Schema loaders are themselves object factories, |
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so you can do something like: |
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[Named Services] |
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peak.naming.factories.myschema = \ |
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naming.LinkRef('ref:zconfig.schema@pkgfile:mypkg/Schema.xml') |
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in order to make URLs like 'ref:myschema@filename' work. Note, by the way, |
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that the above could also read: |
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[Named Services] |
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peak.naming.factories.myschema = \ |
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naming.Reference('zconfig.schema',['pkgfile:mypkg/Schema.xml']) |
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which runs somewhat faster at lookup time. Similarly, one can also use |
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'naming.Reference("myschema",["somefile"])' in place of a |
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'naming.LinkRef("ref:myschema@filename")'. As well as being faster, for |
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some use cases it's easier to 'Reference' directly than to glue together |
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a 'ref:' URL string. |
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| - DEPRECATED 'naming.ParsedURL'. It will disappear in 0.5 alpha 3 or beta. |
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| It is replaced by the new 'naming.URL.Base'. The 'naming.URL' package |
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| provides a new URL parsing framework based on 'peak.model'. Upgrading from |
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| 'ParsedURL' to 'URL.Base' is trivial for ParsedURL subclasses that used |
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| only the 'scheme' and 'body' fields, and in fact may not require any |
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| changes except for the choice of base class. |
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| For more complex URL classes, the '__init__' methods go away, 'parse' |
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| methods change slightly, and explicit field definitions (using |
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| 'model.structField' or similar) are required. See PEAK's 'URL.Base' |
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| subclasses for examples. There is also a sophisticated parsing and |
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| formatting framework (see the 'peak.naming.URL' and 'peak.util.fmtparse' |
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| modules) that can be used in place of the old regex-based approach. |
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| - Added 'peak.util.fmtparse', a parsing and formatting framework, and |
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| integrated it with 'peak.model' so that any element type can have a |
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| syntax for parsing from, or formatting to, a string. |
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| - Added 'binding.whenAssembled(...)' as syntax sugar for |
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| 'binding.Once(...,activateUponAssembly=True)'. |
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| - Removed 'LOG_XYZ' convenience functions from 'peak.api', and refactored |
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| 'peak.running.logs' to use a PEP 282-like interface, 'running.ILogger'. |
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| Under the new scheme, messages must be sent to a specific entry point |
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| (e.g. 'self.logger.warning("foo")'). Components can bind an attribute |
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| directly to a logger object, or via configuration properties or utilities. |
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| PEAK components that do logging all define a 'logger' attribute, bound |
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| to a configuration property in the 'peak.logs' property namespace. By |
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| a default in 'peak.ini', 'peak.logs.*' is configured to output messages |
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| of 'WARNING' priority or higher to 'sys.stderr'. |
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| For compatibility with the PEP 282 logging package, a 'logging.logger:' |
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| URL scheme has been added; looking up the URL '"logging.logger:foo.bar"' |
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| is equivalent to 'logging.getLogger("foo.bar")', unless the 'logging' |
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| package is not available, in which case the configuration property |
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| 'peak.logs.foo.bar' will be looked up in the target context of the |
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| lookup. Optionally, you can configure the 'logging.logger' URL scheme so |
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| that it only uses PEAK loggers, and never uses the PEP 282 loggers. |
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| - Added 'binding.metamethod()' wrapper for metaclass methods that might |
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| not be accessible from their instances if the instances (classes) also |
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| defined the method for *their* instances. You must now use this wrapper |
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| on any such metaclass-defined methods, as PEAK no longer works around |
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| this via the 'x.__class__.foo(x,...)' trick that was used previously. |
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| In particular, if you have metaclass definitions of 'getParentComponent', |
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| '_getConfigData', 'getComponentName', or 'notifyUponAssembly', you need |
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| to wrap them with 'binding.metamethod' now. |
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| - Made 'NOT_GIVEN' and 'NOT_FOUND' recognizable by humans (they 'repr' |
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| and 'str' to their names) and by Python (they can be pickled, and |
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| when restored they come back as the same object). |
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| Corrected Problems |
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| - Fixed a problem where initializing single-valued immutable fields of |
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| 'peak.model' types did not perform type/value normalization. |
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| - Fixed a problem where bindTo would use the attribute name as the |
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| default value for a lookup, if the requested name/property/utility |
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| was not found. |
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| - Fixed 'mof2py' generator script not working |
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| - Fixed model.Element not getting parent component set when passed as a |
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| constructor argument. |
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| - Fixed property/utility lookups not working correctly on model.* |
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| objects. |
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| - Fixed IndentedStream generating all-whitespace lines |
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Diff of /PEAK/CHANGES.txt
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