master/slave, multi... in the glossary
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gwen
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2 changed files with 328 additions and 172 deletions
291
doc/config.txt
291
doc/config.txt
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@ -267,14 +267,18 @@ and of course, :meth:`~config.SubConfig.make_dict()` can be called in a subtree:
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the owners
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~~~~~~~~~~~
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When a value is set on an option, an owner is set too, that's why one can know
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at any time if a value is a default value or not. Let's create a tree::
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.. glossary::
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>>> var1 = UnicodeOption('var1', '', u'oui')
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>>> od1 = OptionDescription('od1', '', [var1])
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>>> rootod = OptionDescription('rootod', '', [od1])
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>>> c = Config(rootod)
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>>> c.read_write()
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owner
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When a value is set on an option, an owner is set too, that's why one can know
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at any time if a value is a default value or not. Let's create a tree::
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>>> var1 = UnicodeOption('var1', '', u'oui')
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>>> od1 = OptionDescription('od1', '', [var1])
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>>> rootod = OptionDescription('rootod', '', [od1])
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>>> c = Config(rootod)
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>>> c.read_write()
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Then let's retrieve the owner associated to an option::
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@ -399,183 +403,134 @@ Furthermore, let's retrieve the properties, delete and add the `hidden` property
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tiramisu.error.PropertiesOptionError: trying to access to an option named:
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var1 with properties ['hidden']
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The requirements
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~~~~~~~~~~~~~~~~~~
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Let's create an option wich has requirements::
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.. _multi-option:
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>>> from tiramisu.option import *
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>>> from tiramisu.config import *
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>>> var2 = UnicodeOption('var2', '', u'oui')
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>>> var1 = UnicodeOption('var1', '', u'value', requires=[{'option':var2, 'expected':u'non', 'action':'hidden'}])
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>>> var3 = UnicodeOption('var3', '', u'value', requires=[{'option':var2, 'expected':u'non', 'action':'hidden'}, {'option':var2, 'expected':u'non', 'action':'disabled'}])
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>>> var4 = UnicodeOption('var4', '', u'oui')
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>>> od1 = OptionDescription('od1', '', [var1, var2, var3])
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>>> od2 = OptionDescription('od2', '', [var4], requires=[{'option':od1.var2, 'expected':u'oui', 'action':'hidden', 'inverse':True}])
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>>> rootod = OptionDescription('rootod', '', [od1, od2])
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>>> c = Config(rootod)
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>>> c.read_write()
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The multi-options
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~~~~~~~~~~~~~~~~~~~~~
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The requirement here is the dict `{'option':var2, 'expected':u'non',
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'action':'hidden'}` wich means that is the option `'od1.var2'` is set to
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`'non'`, the option `'od1.var1'` is gonna be hidden. On the other hand, if the
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option `'od1.var2'` is different from `'non'`, the option `'od1.var1'` is not
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hidden any more::
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.. glossary::
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multi-option
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Multi-options are normal options that have list of values (multiple values)
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instead of values::
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>>> var1 = UnicodeOption('var1', '', [u'val1', u'val2'], multi=True)
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>>> od1 = OptionDescription('od1', '', [var1])
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>>> rootod = OptionDescription('rootod', '', [od1])
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>>> c = Config(rootod)
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>>> c.read_write()
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A multi-option's value can be manipulated like a list::
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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[]
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>>> print c.od1.var1
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value
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>>> print c.od1.var2
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oui
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>>> c.od1.var2 = u'non'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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['hidden']
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[u'val1', u'val2']
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>>> c.od1.var1 = [u'var1']
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>>> print c.od1.var1
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[u'var1']
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>>> c.od1.var1.append(u'val3')
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>>> print c.od1.var1
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[u'var1', u'val3']
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>>> c.od1.var1.pop(1)
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u'val3'
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>>> print c.od1.var1
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[u'var1']
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But it is not possible to set a value to a multi-option wich is not a list::
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>>> c.od1.var1 = u'error'
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Traceback (most recent call last):
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[...]
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tiramisu.error.PropertiesOptionError: trying to access to an option named:
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var1 with properties ['hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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[]
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>>> print c.od1.var1
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value
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ValueError: invalid value error for option var1 which must be a list
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The requirement on `od2` is `{'option':od1.var2, 'expected':u'oui',
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'action':'hidden', 'inverse':True}`, which means that if the option `od1.var2`
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is set to `oui`, the option is not hidden (because of the `True` at the end of
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the tuple wich means 'inverted', take a look at the :doc:`consistency`
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document.)::
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>>> print c.od2.var4
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oui
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>>> c.od1.var2 = u'non'
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>>> print c.od2.var4
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The master/slave groups
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~~~~~~~~~~~~~~~~~~~~~~~~~
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.. glossary::
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master/slave
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A master/slave group is an :class:`~tiramisu.option.OptionDescription` and the
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options that lives inside.
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Inside this group, a special option, named master option, has the same name as
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the group. The group (the option description) is set to type `master`.
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All options in a master group is a multi-option (see :ref:`multi-option`).
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The slave options have a `default_multi` attribute set to `True`::
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>>> from tiramisu.setting import groups
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>>> from tiramisu.config import Config
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>>> from tiramisu.option import UnicodeOption, OptionDescription
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>>>
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>>> var1 = UnicodeOption('master', '', multi=True)
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>>> var2 = UnicodeOption('slave1', '', multi=True)
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>>> var3 = UnicodeOption('slave2', '', multi=True, default_multi=u"default")
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>>>
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>>> od1 = OptionDescription('master', '', [var1, var2, var3])
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>>> od1.impl_set_group_type(groups.master)
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>>>
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>>> rootod = OptionDescription('rootod', '', [od1])
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>>> c = Config(rootod)
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>>> c.read_write()
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The length of the lists can be modified::
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>>> print c.master
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master = []
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slave1 = []
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slave2 = []
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>>> c.master.master.append(u'oui')
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>>> print c.master
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master = [u'oui']
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slave1 = [None]
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slave2 = [u'default']
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>>> c.master.master = [u'non']
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>>> print c.master
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master = [u'non']
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slave1 = [None]
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slave2 = [u'default']
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>>>
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>>> c.master.master = [u'oui', u'non']
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>>> print c.master
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master = [u'oui', u'non']
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slave1 = [None, None]
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slave2 = [u'default', u'default']
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But it is forbidden to change the lenght of a slave::
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>>> c.master.slave1[0] = u'super'
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>>> print c.master
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master = [u'oui', u'non']
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slave1 = [u'super', None]
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slave2 = [u'default', u'default']
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>>> c.master.slave1 = [u'new1', u'new2']
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>>> print c.master
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master = [u'oui', u'non']
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slave1 = [u'new1', u'new2']
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slave2 = [u'default', u'default']
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>>> c.master.slave1 = [u'new1']
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Traceback (most recent call last):
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[...]
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tiramisu.error.PropertiesOptionError: trying to access to an option named: od2 with properties ['hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.od2.var4
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oui
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tiramisu.error.SlaveError: invalid len for the slave: slave1 which has master.master as master
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>>> c.master.slave1 = [u'new1', u'new2', u'new3']
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[...]
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tiramisu.error.SlaveError: invalid len for the slave: slave1 which has master.master as master
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Requirements can be accumulated
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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[]
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>>> c.od1.var2 = u'non'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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['disabled', 'hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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[]
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Requirements can be accumulated for different or identical properties (inverted
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or not)::
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'expected':'oui',
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'action':'hidden'}])
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'excepted':'oui',
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'action':'disabled', 'inverse':True}])
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But it is not possible to have inverted requirements on the same property.
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Here is an impossible situation::
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'expected':'oui',
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'hidden', True}])
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you have to call the `pop` function on the master::
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>>> c.master.master = [u'oui']
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Traceback (most recent call last):
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[...]
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ValueError: inconsistency in action types for option: var3 action: hidden
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The calculations
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~~~~~~~~~~~~~~~~~
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Let's create four calculation functions::
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def return_calc():
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#return an unicode value
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return u'calc'
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def return_value(value):
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return value
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def return_value_param(param=u''):
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return param
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def return_no_value_if_non(value):
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#if value is not u'non' return value
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if value == u'non':
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return None
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else:
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return value
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Then we create four options using theses functions::
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>>> var1 = UnicodeOption('var1', '', callback=return_calc)
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>>> var2 = UnicodeOption('var2', '', callback=return_value, callback_params={'': (u'value',)})
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>>> var3 = UnicodeOption('var3', '', callback=return_value_param, callback_params={'param': (u'value_param',)})
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>>> var4 = UnicodeOption('var4', '', callback=return_no_value_if_non, callback_params={'': (('od1.var5', False),)})
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>>> var5 = UnicodeOption('var5', '', u'oui')
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>>> od1 = OptionDescription('od1', '', [var1, var2, var3, var4, var5])
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>>> rootod = OptionDescription('rootod', '', [od1])
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>>> c = Config(rootod)
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>>> c.read_write()
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The first option `var1` returns the result of the `return_calc` function, wich
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is `u'calc'`::
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>>> print c.od1.var1
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calc
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The second option `var2` returns the result of the `return_value` fucntion,
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wich is `value`. The parameter `u'value'` is passed to this function::
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>>> print c.od1.var2
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value
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The third option `var3` returns the result of the function `return_value_param`
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with the named parameter `param` and the value `u'value_param'`::
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>>> print c.od1.var3
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value_param
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The fourth option `var4` returns the reslut of the function `return_no_value_if_non`
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that is the value of `od1.var5` exceptif the value is u`non`::
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>>> print c.od1.var4
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oui
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>>> c.od1.var5 = u'new'
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>>> print c.od1.var4
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new
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>>> c.od1.var5 = u'non'
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>>> print c.od1.var4
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None
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The calculation replaces the default value.
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If we modify the value, the calculation is not carried out any more::
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>>> print c.od1.var1
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calc
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>>> c.od1.var1 = u'new_value'
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>>> print c.od1.var1
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new_value
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To force the calculation to be carried out in some cases, one must add the
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`frozen` and the `force_default_on_freeze` properties::
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>>> c.cfgimpl_get_settings()[rootod.od1.var1].append('frozen')
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>>> c.cfgimpl_get_settings()[rootod.od1.var1].append('force_default_on_freeze')
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>>> print c.od1.var1
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calc
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>>> c.cfgimpl_get_settings()[rootod.od1.var1].remove('frozen')
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>>> c.cfgimpl_get_settings()[rootod.od1.var1].remove('force_default_on_freeze')
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>>> print c.od1.var1
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new_value
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tiramisu.error.SlaveError: invalid len for the master: master which has slave1 as slave with greater len
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>>> c.master.master.pop(0)
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u'oui'
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>>> print c.master
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master = [u'non']
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slave1 = [u'new2']
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slave2 = [u'default']
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Configuration's interesting methods
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------------------------------------------
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@ -72,6 +72,96 @@ callback's action name (`hide`, `show`...), wich is a
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:class:`~setting.Property()`. Requirements are validated in
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:class:`setting.Setting`.
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Let's create an option wich has requirements::
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>>> from tiramisu.option import *
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>>> from tiramisu.config import *
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>>> var2 = UnicodeOption('var2', '', u'oui')
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>>> var1 = UnicodeOption('var1', '', u'value', requires=[{'option':var2, 'expected':u'non', 'action':'hidden'}])
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>>> var3 = UnicodeOption('var3', '', u'value', requires=[{'option':var2, 'expected':u'non', 'action':'hidden'}, {'option':var2, 'expected':u'non', 'action':'disabled'}])
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>>> var4 = UnicodeOption('var4', '', u'oui')
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>>> od1 = OptionDescription('od1', '', [var1, var2, var3])
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>>> od2 = OptionDescription('od2', '', [var4], requires=[{'option':od1.var2, 'expected':u'oui', 'action':'hidden', 'inverse':True}])
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>>> rootod = OptionDescription('rootod', '', [od1, od2])
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>>> c = Config(rootod)
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>>> c.read_write()
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The requirement here is the dict `{'option':var2, 'expected':u'non',
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'action':'hidden'}` wich means that is the option `'od1.var2'` is set to
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`'non'`, the option `'od1.var1'` is gonna be hidden. On the other hand, if the
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option `'od1.var2'` is different from `'non'`, the option `'od1.var1'` is not
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hidden any more::
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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[]
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>>> print c.od1.var1
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value
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>>> print c.od1.var2
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oui
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>>> c.od1.var2 = u'non'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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['hidden']
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>>> print c.od1.var1
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Traceback (most recent call last):
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[...]
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tiramisu.error.PropertiesOptionError: trying to access to an option named:
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var1 with properties ['hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var1]
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[]
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>>> print c.od1.var1
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value
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The requirement on `od2` is `{'option':od1.var2, 'expected':u'oui',
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'action':'hidden', 'inverse':True}`, which means that if the option `od1.var2`
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is set to `oui`, the option is not hidden (because of the `True` at the end of
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the tuple wich means 'inverted', take a look at the :doc:`consistency`
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document.)::
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>>> print c.od2.var4
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oui
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>>> c.od1.var2 = u'non'
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>>> print c.od2.var4
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Traceback (most recent call last):
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[...]
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tiramisu.error.PropertiesOptionError: trying to access to an option named: od2 with properties ['hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.od2.var4
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oui
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Requirements can be accumulated
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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[]
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>>> c.od1.var2 = u'non'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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['disabled', 'hidden']
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>>> c.od1.var2 = u'oui'
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>>> print c.cfgimpl_get_settings()[rootod.od1.var3]
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[]
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Requirements can be accumulated for different or identical properties (inverted
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or not)::
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'expected':'oui',
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'action':'hidden'}])
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'excepted':'oui',
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'action':'disabled', 'inverse':True}])
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But it is not possible to have inverted requirements on the same property.
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Here is an impossible situation::
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>>> a = UnicodeOption('var3', '', u'value', requires=[{'option':od1.var2,
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'expected':'non', 'action':'hidden'}, {'option':od1.var1, 'expected':'oui',
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'hidden', True}])
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Traceback (most recent call last):
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[...]
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ValueError: inconsistency in action types for option: var3 action: hidden
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Validation upon a whole configuration object
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----------------------------------------------
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@ -87,6 +177,36 @@ Other hooks are availables to validate upon a whole configuration at any time,
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for example the consistency between two options (typically, an
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:class:`IPOption` and a :class:`NetworkOption`).
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Let's define validator (wich is a normal python function)::
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>>> def valid_a(value, letter=''):
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... return value.startswith(letter)
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Here is an option wich uses this validator::
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|
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>>> var1 = UnicodeOption('var1', '', u'oui', validator=valid_a, validator_args={'letter': 'o'})
|
||||
>>>
|
||||
>>> od1 = OptionDescription('od1', '', [var1])
|
||||
>>>
|
||||
>>> rootod = OptionDescription('rootod', '', [od1])
|
||||
>>>
|
||||
>>> c = Config(rootod)
|
||||
>>> c.read_write()
|
||||
|
||||
The validation is applied at the modification time::
|
||||
|
||||
>>> c.od1.var1 = u'non'
|
||||
Traceback (most recent call last):
|
||||
[...]
|
||||
ValueError: invalid value non for option var1
|
||||
>>> c.od1.var1 = u'oh non'
|
||||
|
||||
Il est possible de désactiver la validation :
|
||||
|
||||
>>> c.cfgimpl_get_settings().remove('validator')
|
||||
>>> c.od1.var1 = u'non'
|
||||
|
||||
|
||||
Values that are calculated
|
||||
--------------------------------
|
||||
|
||||
|
|
@ -111,3 +231,84 @@ attribute.
|
|||
attribute `force_store_value` enabled is considered to be modified at
|
||||
the first calculation
|
||||
|
||||
Let's create four calculation functions::
|
||||
|
||||
def return_calc():
|
||||
#return an unicode value
|
||||
return u'calc'
|
||||
|
||||
def return_value(value):
|
||||
return value
|
||||
|
||||
def return_value_param(param=u''):
|
||||
return param
|
||||
|
||||
def return_no_value_if_non(value):
|
||||
#if value is not u'non' return value
|
||||
if value == u'non':
|
||||
return None
|
||||
else:
|
||||
return value
|
||||
|
||||
Then we create four options using theses functions::
|
||||
|
||||
>>> var1 = UnicodeOption('var1', '', callback=return_calc)
|
||||
>>> var2 = UnicodeOption('var2', '', callback=return_value, callback_params={'': (u'value',)})
|
||||
>>> var3 = UnicodeOption('var3', '', callback=return_value_param, callback_params={'param': (u'value_param',)})
|
||||
>>> var4 = UnicodeOption('var4', '', callback=return_no_value_if_non, callback_params={'': (('od1.var5', False),)})
|
||||
>>> var5 = UnicodeOption('var5', '', u'oui')
|
||||
>>> od1 = OptionDescription('od1', '', [var1, var2, var3, var4, var5])
|
||||
>>> rootod = OptionDescription('rootod', '', [od1])
|
||||
>>> c = Config(rootod)
|
||||
>>> c.read_write()
|
||||
|
||||
The first option `var1` returns the result of the `return_calc` function, wich
|
||||
is `u'calc'`::
|
||||
|
||||
>>> print c.od1.var1
|
||||
calc
|
||||
|
||||
The second option `var2` returns the result of the `return_value` fucntion,
|
||||
wich is `value`. The parameter `u'value'` is passed to this function::
|
||||
|
||||
>>> print c.od1.var2
|
||||
value
|
||||
|
||||
The third option `var3` returns the result of the function `return_value_param`
|
||||
with the named parameter `param` and the value `u'value_param'`::
|
||||
|
||||
>>> print c.od1.var3
|
||||
value_param
|
||||
|
||||
The fourth option `var4` returns the reslut of the function `return_no_value_if_non`
|
||||
that is the value of `od1.var5` exceptif the value is u`non`::
|
||||
|
||||
>>> print c.od1.var4
|
||||
oui
|
||||
>>> c.od1.var5 = u'new'
|
||||
>>> print c.od1.var4
|
||||
new
|
||||
>>> c.od1.var5 = u'non'
|
||||
>>> print c.od1.var4
|
||||
None
|
||||
|
||||
The calculation replaces the default value.
|
||||
If we modify the value, the calculation is not carried out any more::
|
||||
|
||||
>>> print c.od1.var1
|
||||
calc
|
||||
>>> c.od1.var1 = u'new_value'
|
||||
>>> print c.od1.var1
|
||||
new_value
|
||||
|
||||
To force the calculation to be carried out in some cases, one must add the
|
||||
`frozen` and the `force_default_on_freeze` properties::
|
||||
|
||||
>>> c.cfgimpl_get_settings()[rootod.od1.var1].append('frozen')
|
||||
>>> c.cfgimpl_get_settings()[rootod.od1.var1].append('force_default_on_freeze')
|
||||
>>> print c.od1.var1
|
||||
calc
|
||||
>>> c.cfgimpl_get_settings()[rootod.od1.var1].remove('frozen')
|
||||
>>> c.cfgimpl_get_settings()[rootod.od1.var1].remove('force_default_on_freeze')
|
||||
>>> print c.od1.var1
|
||||
new_value
|
||||
|
|
|
|||
Loading…
Reference in a new issue