| Fixes and Enhancements since Version 0.5 alpha 1 |
Fixes and Enhancements since Version 0.5 alpha 3 |
| |
|
| Changed, Enhanced, or Newly Deprecated Features |
- Security permissions can now be declared as attribute metadata. |
| |
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| - DEPRECATED use of '__implements__' and '__class_implements__' to declare |
That is, instead of doing declarations like this:: |
| support for interfaces. Use 'implements()', 'classProvides()', |
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| 'directlyProvides()', 'moduleProvides()', etc. to do this now; they |
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| are now available automatically from 'peak.api'. |
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| |
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| - The signatures of the 'getObjectInstance()', 'getStateToBind()', and |
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| 'getURLContext()' methods in the 'peak.naming' package have changed, to |
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| place the context or parent component as the first, non-optional argument. |
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| (If you don't know what these methods are for, you don't need to do anything |
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| about this, as they are part of the naming package's extensibility |
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| framework.) |
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| |
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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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| |
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| - 'binding.bindTo()' now accepts a 'default=' argument, whose value will be |
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| used in case of a 'NameNotFound' error. |
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| |
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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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| |
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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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| |
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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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| |
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| - Added 'binding.whenAssembled(...)' as syntax sugar for |
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| 'binding.Once(...,activateUponAssembly=True)'. |
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| |
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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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| |
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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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| |
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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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| |
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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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| |
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| Corrected Problems |
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| |
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| - Fixed 'naming.lookup()' and related APIs not setting the parent component |
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| of created objects without an explicitly supplied 'creationParent' keyword |
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| argument. This used to "sort of work" when we had implicit configuration |
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| parents, but was broken when we went "all explicit" for 0.5 alpha 1. |
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| |
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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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| |
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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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| |
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| - Fixed 'mof2py' generator script not working |
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| |
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| - Fixed model.Element not getting parent component set when passed as a |
class Foo: |
| constructor argument. |
bar = binding.Require("Something", permissionNeeded=SomePerm) |
| |
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| - Fixed property/utility lookups not working correctly on model.* |
class AnElement(model.Element): |
| objects. |
class someFeature(model.Attribute): |
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permissionNeeded = SomePerm |
| |
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| |
you can (and should) now do them like this:: |
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class Foo: |
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bar = binding.Require("Something", [SomePerm]) |
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|
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class AnElement(model.Element): |
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class someFeature(model.Attribute): |
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metadata = [SomePerm] |
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or this:: |
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class Foo: |
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binding.metadata(bar = [SomePerm]) |
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|
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class AnElement(model.Element): |
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|
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binding.metadata(someFeature = [SomePerm]) |
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|
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class someFeature(model.Attribute): |
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# ... |
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It isn't necessary to enclose metadata in brackets, but it helps to |
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emphasize its annotational nature. Also note that e.g. 'web.bindResource()' |
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needs 'metadata' to be a keyword argument. |
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|
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- The 'permissionNeeded' attribute of 'model.Feature' and 'binding.Attribute' |
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objects is now DEPRECATED. See examples above for how to upgrade, and please |
| |
switch to using metadata as soon as practical. In addition the |
| |
'security.IGuardedDescriptor' interface has been removed, because it was |
| |
only used in connection with the 'permissionNeeded' attribute mechanism. |
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|
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- Added a new "attribute metadata" mini-framework to 'peak.binding'. This |
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framework makes it possible to declare arbitrary metadata about attributes, |
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using either a class advisor ('binding.metadata()', similar in form and |
| |
function to the existing 'security.allow()') or using a 'metadata' attribute |
| |
of attribute bindings (which is the second positional parameter in all |
| |
the standard bindings like 'Make', 'Obtain', etc.). Over time, existing |
| |
metadata mechanisms will be refactored to use this new mini-framework, |
| |
instead of the various integrated ad-hoc mechanisms that exist now (like |
| |
the 'permissionNeeded' attribute). For more information on how the new |
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metadata hooks work, including doctest examples, see the 'attributes.txt' |
| |
file in the 'peak.binding' package, under the heading "Attribute Metadata". |
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|
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- Added a new function, 'binding.activateClass()', that can be used to |
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activate any bindings in the class. This can now be used in place of |
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subclassing a PEAK base class or using a PEAK metaclass. In future, this |
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will be integrated into PEAK attribute descriptors such that defining a |
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descriptor within a class' body is sufficient to cause this function to be |
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invoked. |
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|
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- 'binding.IBindingNode' was REMOVED, consolidated into 'binding.IComponent', |
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as its various individual methods have been replaced with generic functions |
| |
in the existing 'binding' API. For example, 'binding.getParentComponent(x)' |
| |
should be used in preference to 'x.getParentComponent()' unless it is |
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a requirement that 'x' implement the full 'binding.IComponent' interface. |
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This makes it easier to define what 'binding.getParentComponent()' and |
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'binding.getComponentName()' will mean for non-component types, as you do |
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not have to define an adapter class with all of the 'IBindingNode' methods. |
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Also, this makes PEAK itself cleaner, as we often weren't bothering to |
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properly implement the full 'IBindingNode' interface anyway. |
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|
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In addition, 'binding.suggestParentComponent()' is now also a generic |
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function, dispatching on the target (i.e. child) object. |
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|
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- 'naming.IReferenceable' was REMOVED, as it is not in use anywhere in PEAK. |
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This will be replaced with a generic function when we do actually need this |
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functionality. |
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|
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- There is a new 'config.getStreamFactory' generic function, to make it easy |
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to accept URLs, filenames, or 'naming.IStreamFactory' objects as the source |
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of a "file". |
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|
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Its typical usage is just:: |
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|
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factory = config.getStreamFactory(self,source) |
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stream = factory.open('t') # open for reading in text mode |
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|
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where 'source' is a string or a 'naming.IStreamFactory', and 'self' is a |
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component to be used as lookup context. The returned 'factory' is a |
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'naming.IStreamFactory' that can then be '.open()'-ed for reading, or used |
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in other ways as needed. |
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|
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If you have special objects that you'd like to be able to treat as stream |
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sources, you can register them by defining an extension, e.g.:: |
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|
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[config.getStreamFactory.when(MyType)] |
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def getStreamFactory(context,source): |
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"""Return a naming.IStreamFactory for 'source' (a 'MyType' instance)""" |
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|
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Wherever practical, as we encounter them, we'll be changing PEAK API's that |
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take filenames to also accept stream sources. |
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|
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- Added an optional 'base' argument to 'naming.parseURL()', to allow parsing |
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URLs relative to a base URL. For a URL scheme to support this, it must |
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implement the new 'naming.IBaseURL' interface. See the |
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'peak.naming.factories.openable' module for example implementations. |
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|
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- Added a 'data:' URL scheme, implementing RFC 2397 (although it's not as |
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strict in its parsing of the content type and parameters as the RFC calls |
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for). This is a semi-convenient way to provide configuration data in-line, |
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since a 'data:' URL can be a 'config.getStreamFactory()' source. |
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|
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- Added 'config.processXML()', a function that provides a high-level, |
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configuration-driven interface to 'peak.util.SOX.NegotiatingParser'. This |
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simple front-end lets you supply as little as a configuration context and |
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a stream source, to do XML processing of arbitrary complexity, controlled by |
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the configuration of the context. |
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|
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- Added 'config.XMLKey()', an 'IConfigKey' type that can be used to register |
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configuration values for XML attribute and element names under specified |
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XML namespace URI's. Also, there are now '[XML Attributes for nsuri]' and |
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'[XML Elements for nsuri]' section types available for use in .ini files. |
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(Replace 'nsuri' with the appropriate XML namespace URI, or use '*' for a |
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wildcard.) |
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|
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- 'web.IResource' is gone, replaced by 'web.IPlace'. The notion of a place is |
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broader than the notion of a resource, and we will soon need to have |
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other "location" objects that implement 'IPlace'. |
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|
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- In order to support obtaining the line and column locations of problems in |
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XML files, we are now using Python 2.4's version of the 'pyexpat' module, |
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built as 'peak.util.pyexpat'. |
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|
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- There's a new class, 'config.IniLoader', that can be used to lazily load |
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.ini files as configuration. 'IniLoader' instances have an 'iniFiles' |
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attribute that lists the configuration sources (filenames/URLs/factories) |
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to be used, and automatically load the .ini files as soon as you try to get |
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any configuration data for them. Previously, similar functionality was only |
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available via 'config.makeRoot()'. |
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|
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Also, there's now an 'ini' reference type that instantiates an 'IniLoader' |
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for one or more addresses. You can use it like this:: |
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|
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[Named Services] |
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|
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some.example = naming.Reference('ini', |
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['pkgfile:peak/peak.ini', '/etc/something.ini'] |
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) |
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|
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another.example = naming.LinkRef( |
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'ref:ini@pkgfile:peak/peak.ini||/etc/something.ini' |
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) |
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|
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The two examples above will each load the same pair of specified .ini files. |
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You can also directly instantiate an 'IniLoader', as in:: |
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|
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cfg = config.IniLoader(self, iniFiles=['pkgfile:peak/peak.ini']) |
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|
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Attempting to look up any configuration properties via the 'cfg' object |
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will cause it to load the specified .ini file. |
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|
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- 'config.fileNearModule()' is DEPRECATED, in favor of 'config.packageFile()'. |
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The latter returns a 'naming.IStreamFactory', which is more suitable for |
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working with e.g. module data files compressed in a zipfile. Uses of |
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'fileNearModule()' that were being passed to 'config.loadConfigFile()' can |
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be safely changed to 'config.packageFile()' without needing any other code |
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changes, but if you were directly using 'fileNearModule()' as a filename, |
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you will need to rewrite appropriately. |
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|
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- 'config.loadConfigFile()' and 'config.loadConfigFiles()' now accept URLs, |
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'naming.IStreamFactory' objects, and other 'config.getStreamFactory()' |
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targets as well as filenames. This was primarily added to support use of |
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'config.packageFile()' or 'pkgfile:' URLs, in place of using |
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'config.fileNearModule()'. |
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|
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- The 'naming.IStreamFactory' interface now has an 'address' attribute, which |
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is the string form of the canonical URL of the target stream. This was |
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added to make it easier to e.g. report errors in a stream that's being |
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parsed, since the parser only needs the factory in order to report the |
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location of an error. (Note: if you implement 'naming.IStreamFactory', be |
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sure to add this attribute to your implementations.) |
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|
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- The 'peak.util.WSGIServer' module has been moved to the |
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'wsgiref.simple_server' module. The 'wsgiref' reference library for WSGI |
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(aka PEP 333) is now distributed with PEAK. |
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|
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- Added a 'WSGI' command to the 'peak' script, to allow you to run "foreign" |
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(i.e. non-PEAK) PEP 333 applications in PEAK's various servers and |
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launchers. Basically, by prefixing 'WSGI' before the import specifier, you |
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can now run such foreign apps. |
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|
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For example:: |
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|
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peak launch WSGI import:some_app.application |
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|
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will run 'some_app.application' in the local web browser, and:: |
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|
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peak CGI WSGI import:some_app.application |
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|
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will run it under the CGI/FastCGI runner. Similarly, you can use this in |
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the "Command" spec for the "peak supervise" pre-forking FastCGI supervisor |
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subsystem. |
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|
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- There is a new 'running.IWSGIApplication' interface, for PEP 333-compliant |
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"application" objects, and all of PEAK's provided applications now implement |
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it instead of 'running.IRerunnableCGI'. If you write your apps to the newer |
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interface, they'll be portable to any PEP 333-compliant web server, not just |
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the PEAK CGI, FastCGI, and "supervisor" containers. There is a simple |
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adapter that allows 'IWSGIApplication' objects to run in the CGI-based |
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containers, but not the other way around, so using 'IRerunnableCGI' directly |
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now limits your portability. (For example, the "peak launch" and "peak |
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serve" commands will soon require 'IWSGIApplication', and will not support |
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'IRerunnableCGI' any more.) |
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|
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Of course, if you use the 'peak.web' framework, you don't need to worry |
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about any of this; your apps will automatically be wrapped as |
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'IWSGIApplication', and run in any PEAK server or gateway. |
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|
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- Most 'peak.web' interfaces have changed significantly. If you implemented |
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anything based on the older interfaces, and it still works, it's sheer |
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bloody luck. In particular, note that every method in 'web.IWebTraversable' |
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now has different inputs and/or outputs than before. Please read the new |
| |
interface docs and update your code! The changed interfaces offer much |
| |
more flexibility and functionality than before, but they will require you to |
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update your code. |
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|
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- 'web.ContainerAsTraversable' has been removed. It was redundant, since the |
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new default traversal mechanism used by 'Traversable' and 'Decorator' now |
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handles getitem, getattr, and views. |
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|
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- Added Zope 3-like "namespaces" to 'peak.web'. Path segments in a URL |
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may be prefixed with '"++some_id++"' in order to invoke a corresponding |
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namespace handler registered under '"peak.web.namespaces.some_id"'. |
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Namespace handlers must implement 'web.INamespaceHandler', and they are |
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supplied with the original path segment as well as the separated namespace |
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and name. Also, as in Zope 3, '"@@foo"' is a shortcut for '"++view++foo"'. |
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Builtin namespaces at this time include 'view', 'item', 'attr', 'skin', and |
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'resources'. 'skin' treats the rest of its path segment as a skin name, |
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and sets the current skin, while 'resources' begins traversal to resources |
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found in the current skin. The other namespaces are as described at: |
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|
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"Resources and traversal in peak.web":http://www.eby-sarna.com/pipermail/peak/2004-August/001712.html |
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|
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- Fixed several 'peak.events' bugs, as reported by Vladimir Iliev, Yaroslav |
| |
Samchuk, and Alexander Smishlajev: |
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|
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* 'events.AnyOf' could hold multiple references to a single event source, |
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and nesting 'AnyOf()' calls could leak references to the nested events. |
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|
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* 'events.subscribe()' had a potential race condition wherein a callback |
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could be invoked after its weak reference was garbage collected, leading |
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to bizarre error messages about 'self' being 'None'. |
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|
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* 'select()' could be called on select event objects even if there were |
| |
no current subscribers to the event, potentially leading to calling |
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'select()' on a closed socket. |
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|
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* Non-default signal handlers were remaining installed even when there |
| |
were no current subscribers to the applicable event, as long as a |
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reference to the event object existed. |
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|
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As a result of these changes, certain I/O event types (esp. signals and |
| |
stream readable/writeable events) are now longer-lived. For example, |
| |
signal event objects are now immortal, and the read/write event for a |
| |
particular 'fileno()' will be reused for as long as its supplying |
| |
'Selector' or 'EventLoop' instance exists. (Previously, weak references |
| |
were used so that these objects would be recycled when not in use.) |
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|
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- Added 'config.registeredProtocol()' API, that supports defining named and |
| |
local protocols. This allows easy emulation of Zope 3's "named" and "local" |
| |
adapters and views. |
| |
|
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- 'binding.Component' objects no longer support instance configuration at |
| |
runtime (i.e., they no longer implement 'config.IConfigurable'). If you |
| |
need a component to be configurable at runtime, you must now derive from |
| |
(or mix in) 'binding.Configurable' instead. If you get errors about |
| |
a missing 'registerProvider' attribute, or about being unable to adapt to |
| |
'IConfigurable', try changing your base class from 'binding.Component' |
| |
to 'binding.Configurable', or add it as a mixin if you're deriving from |
| |
a class that uses 'binding.Component' as its base. |
| |
|
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- 'binding.IComponent' no longer derives from 'config.IConfigurable' or |
| |
'config.IConfigMap', only 'config.IConfigSource'. This means that |
| |
'IComponent' no longer guarantees or requires the presence of the |
| |
'registerProvider()' method: now only 'config.IConfigurable' does that. |
| |
|
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- The 'config.IConfigMap' interface is now DEPRECATED. Use |
| |
'config.IConfigurable' instead. The '_configKeysMatching()' method |
| |
of 'IConfigMap' was moved to 'config.IConfigSource', so if you've |
| |
implemented a custom 'IConfigSource', be sure to add this method. |
| |
|
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- 'web.ISkinService' and 'web.ILayerService' were consolidated into |
| |
'web.IInteractionPolicy', because the need to have configurable |
| |
implementations of these services is negligible. That is, the |
| |
corresponding property namespaces ('peak.web.skins' and 'peak.web.layers') |
| |
are more than adequate as registries. |
| |
|
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- Removed 'peak.running.timers' and 'peak.util.dispatch'. Neither was in |
| |
active use, and both are being replaced by the new generic functions |
| |
package in PyProtocols. |
| |
|
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- The 'config.iterParents' API is now moved to 'binding.iterParents', and all |
| |
'binding' functions that walk the component hierarchy use it. It has also |
| |
been changed to avoid infinite loops in the case of a pathological |
| |
component structure. |
| |
|
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- The 'persistence' package has been moved to 'peak.persistence' to avoid |
| |
conflicts with ZODB3 and the latest version of Zope 3. It will eventually |
| |
be phased out, but for now this move is the simplest way to get it out of |
| |
the way. |
| |
|
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- The 'peak.util.SOX' module now uses only one parser, based directly on |
| |
'expat', instead of using SAX. The new parser expects a new node interface, |
| |
'IXMLBuilder', but adapters from the previous interfaces ('ISOXNode' and |
| |
'ISOXNode_NS') are supplied for backward compatibility. All of PEAK's |
| |
direct XML handling (currently just 'peak.storage.xmi' and |
| |
'peak.web.templates') have been refactored to use the new interface. Some |
| |
parsing classes (such as 'ObjectMakingHandler', 'NSHandler', and |
| |
'DOMletParser') are no longer available. |
| |
|
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- 'peak.web' no longer uses Zope X3 for HTTP publishing support; it has been |
| |
refactored to use a "simpler, more uniform architecture":http://www.eby-sarna.com/pipermail/peak/2004-May/001462.html |
| |
See also "more on the architecture":http://www.eby-sarna.com/pipermail/peak/2004-June/001482.html |
| |
and subsequent posts in that thread. |
| |
|
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As a consequence, "various features have been removed":http://www.eby-sarna.com/pipermail/peak/2004-June/001500.html |
| |
from 'peak.web', for possible return at a future date. Here is a rough |
| |
outline of the changes made so far: |
| |
|
| |
* The 'pageProtocol', 'pathProtocol', and 'errorProtocol' machinery are |
| |
gone. They will be replaced in the future with an explicit "controller" |
| |
wrapping mechanism to allow application-specific renderings of the same |
| |
underlying components. |
| |
|
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* The Zope 'request' and 'response' objects are gone, along with all of |
| |
their special handling for cookies, character sets, form variables, |
| |
automatically marshalling parameters to functions, etc. These items of |
| |
functionality will be gradually replaced by functions in 'peak.web.api'. |
| |
|
| |
As a result of this, arbitrary functions and methods can no longer be |
| |
used as web pages; instead, functions and methods to be published must |
| |
use the same inputs and outputs as the 'IHTTPHandler.handle_http()' |
| |
method. |
| |
|
| |
* The 'IWebPage', 'IWebInteraction', 'ITraversalContext', 'Traversal', |
| |
'TraversalContext', and 'Interaction' interfaces and classes no longer |
| |
exist, as they are unneeded in the new architecture. Instead of |
| |
having a central 'IWebInteraction' that's referenced by numerous |
| |
'ITraversalContext' objects, the new approach uses an 'environ' mapping |
| |
for most functions. For access control, a 'security.IInteraction' is |
| |
now used, whose function is limited to security checks. Most |
| |
functions previously performed by 'IWebInteraction' have moved to |
| |
'IInteractionPolicy' or to 'peak.web.api' functions operating on |
| |
'environ' mappings. |
| |
|
| |
* Web exceptions can define a 'levelName' attribute that determines the |
| |
severity level with which the exception will be logged. This allows |
| |
one to e.g. avoid logging tracebacks for 'NotFound' errors. |
| |
|
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* Various interface calling signatures have changed slightly. For example, |
| |
'IAuthService.getUser()' now accepts an 'environ' mapping instead of |
| |
an interaction. 'IInteractionPolicy.newInteraction()' now takes keyword |
| |
arguments, but not a 'request'. The 'IWebTraversable' interface no longer |
| |
has a 'getObject()' method, and the 'IWebException.handleException()' |
| |
method signature has changed as well. Finally, all methods that |
| |
previously accepted 'ITraversalContext' (such as |
| |
'IDOMletState.renderFor()') now expect 'environ' mappings. |
| |
|
| |
* 'web.TestInteraction' was replaced with 'web.TestPolicy', and |
| |
'web.Interaction' was removed, since 'IWebInteraction' is no longer part |
| |
of the architecture. |
| |
|
| |
- The 'log()' method of PEAK loggers ('logs.ILogger') now accepts a level name |
| |
*or* a number, for convenient invocation. |
| |
|
| |
- SQL transaction semantics have changed. Now, issuing an SQL statement |
| |
*always* causes the connection to join the active PEAK transaction, even if |
| |
you request that the SQL be issued "outside" a transaction. Such SQL will |
| |
be issued outside of the *database* transaction, but not outside of the |
| |
PEAK transaction. This simplifies the overall processing model for dealing |
| |
with "untransacted" SQL such as Sybase DDL or read-only Oracle transactions. |
| |
(In particular, the requirement that triggered this change was to allow |
| |
Oracle read-only transactions to be released at the end of the current PEAK |
| |
transaction.) Also, got rid of the now-meaningless 'begin' command in n2. |
| |
|
| |
- The 'events.IEventSource' interface now returns a 'canceller' function from |
| |
the 'addCallback()' method, allowing you to cancel a previously-scheduled |
| |
callback. This fixes a memory leak and performance problem with |
| |
'events.AnyOf()', which previously could accumulate unneeded callbacks on |
| |
the sources it was monitoring. Note that if you have developed any custom |
| |
event sources with 'addCallback()' methods, you must make sure that they |
| |
return a canceller from now on. |
| |
|
| |
- Added 'ref:factory@addr1||addr2' URL scheme that maps to a corresponding |
| |
'naming.Reference("factory",["addr1","addr2"])'. 'factory' can be either a |
| |
dotted import string referencing a 'naming.IObjectFactory', or you can |
| |
define a factory in the 'peak.naming.factories' property space. |
| |
|
| |
- Added a 'zconfig.schema' factory, so that 'ref:zconfig.schema@streamURL' |
| |
will load a schema loader. Schema loaders are themselves object factories, |
| |
so you can do something like:: |
| |
|
| |
[Named Services] |
| |
peak.naming.factories.myschema = \ |
| |
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, |
| |
that the above could also read:: |
| |
|
| |
[Named Services] |
| |
peak.naming.factories.myschema = \ |
| |
naming.Reference('zconfig.schema',['pkgfile:mypkg/Schema.xml']) |
| |
|
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which runs somewhat faster at lookup time. Similarly, one can also use |
| |
'naming.Reference("myschema",["somefile"])' in place of a |
| |
'naming.LinkRef("ref:myschema@filename")'. As well as being faster, for |
| |
some use cases it's easier to 'Reference' directly than to glue together |
| |
a 'ref:' URL string. |
| |
|
| - Fixed IndentedStream generating all-whitespace lines |
|
| |
|
Diff of /PEAK/CHANGES.txt
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Revision Log