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- ##############################################################################
- #
- # Zope Public License (ZPL) Version 1.0
- # -------------------------------------
- #
- # Copyright (c) Digital Creations. All rights reserved.
- #
- # This license has been certified as Open Source(tm).
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions are
- # met:
- #
- # 1. Redistributions in source code must retain the above copyright
- # notice, this list of conditions, and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions, and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. Digital Creations requests that attribution be given to Zope
- # in any manner possible. Zope includes a "Powered by Zope"
- # button that is installed by default. While it is not a license
- # violation to remove this button, it is requested that the
- # attribution remain. A significant investment has been put
- # into Zope, and this effort will continue if the Zope community
- # continues to grow. This is one way to assure that growth.
- #
- # 4. All advertising materials and documentation mentioning
- # features derived from or use of this software must display
- # the following acknowledgement:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # In the event that the product being advertised includes an
- # intact Zope distribution (with copyright and license included)
- # then this clause is waived.
- #
- # 5. Names associated with Zope or Digital Creations must not be used to
- # endorse or promote products derived from this software without
- # prior written permission from Digital Creations.
- #
- # 6. Modified redistributions of any form whatsoever must retain
- # the following acknowledgment:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # Intact (re-)distributions of any official Zope release do not
- # require an external acknowledgement.
- #
- # 7. Modifications are encouraged but must be packaged separately as
- # patches to official Zope releases. Distributions that do not
- # clearly separate the patches from the original work must be clearly
- # labeled as unofficial distributions. Modifications which do not
- # carry the name Zope may be packaged in any form, as long as they
- # conform to all of the clauses above.
- #
- #
- # Disclaimer
- #
- # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
- # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
- # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- #
- #
- # This software consists of contributions made by Digital Creations and
- # many individuals on behalf of Digital Creations. Specific
- # attributions are listed in the accompanying credits file.
- #
- ##############################################################################
-
-
-
- def manage_addExternalMethod(self, id, title, module, function):
- """
-
- Add an external method to an ObjectManager.
-
- In addition to the standard object-creation arguments,
- 'id' and title, the following arguments are defined:
-
- function -- The name of the python function. This can be a
- an ordinary Python function, or a bound method.
-
- module -- The name of the file containing the function
- definition.
-
- The module normally resides in the 'Extensions'
- directory, however, the file name may have a prefix of
- 'product.', indicating that it should be found in a product
- directory.
-
- For example, if the module is: 'ACMEWidgets.foo', then an
- attempt will first be made to use the file
- 'lib/python/Products/ACMEWidgets/Extensions/foo.py'. If this
- failes, then the file 'Extensions/ACMEWidgets.foo.py' will be
- used.
-
- """
-
- class ExternalMethod:
- """
-
- Web-callable functions that encapsulate external python functions.
-
- The function is defined in an external file. This file is treated
- like a module, but is not a module. It is not imported directly,
- but is rather read and evaluated. The file must reside in the
- 'Extensions' subdirectory of the Zope installation, or in an
- 'Extensions' subdirectory of a product directory.
-
- Due to the way ExternalMethods are loaded, it is not *currently*
- possible to use Python modules that reside in the 'Extensions'
- directory. It is possible to load modules found in the
- 'lib/python' directory of the Zope installation, or in
- packages that are in the 'lib/python' directory.
-
- """
-
- __constructor__=manage_addExternalMethod
-
- def manage_edit(self, title, module, function, REQUEST=None):
- """
- Change the external method
-
- See the description of manage_addExternalMethod for a
- description of the arguments 'module' and 'function'.
-
- Note that calling 'manage_edit' causes the "module" to be
- effectively reloaded. This is useful during debugging to see
- the effects of changes, but can lead to problems of functions
- rely on shared global data.
-
- """
-
- def __call__(self, *args, **kw):
-
- """
-
- Call an ExternalMethod
-
- Calling an External Method is roughly equivalent to calling
- the original actual function from Python. Positional and
- keyword parameters can be passed as usual. Note however that
- unlike the case of a normal Python method, the "self" argument
- must be passed explicitly. An exception to this rule is made
- if:
-
- - The supplied number of arguments is one less than the
- required number of arguments, and
-
- - The name of the function\'s first argument is 'self'.
-
- In this case, the URL parent of the object is supplied as the
- first argument.
-
- """
-