author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Thu, 17 Jun 2010 12:13:38 +0200 | |
changeset 5766 | c397819f2482 |
parent 5722 | 61d6a4caa963 |
child 5768 | 1e73a466aa69 |
permissions | -rw-r--r-- |
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# copyright 2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""some basic entity adapter implementations, for interfaces used in the |
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framework itself. |
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""" |
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__docformat__ = "restructuredtext en" |
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from itertools import chain |
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from warnings import warn |
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from logilab.mtconverter import TransformError |
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from logilab.common.decorators import cached |
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from cubicweb.view import EntityAdapter, implements_adapter_compat |
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from cubicweb.selectors import implements, relation_possible |
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from cubicweb.interfaces import IDownloadable, ITree, IProgress, IMileStone |
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class IEmailableAdapter(EntityAdapter): |
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__regid__ = 'IEmailable' |
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__select__ = relation_possible('primary_email') | relation_possible('use_email') |
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def get_email(self): |
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if getattr(self.entity, 'primary_email', None): |
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return self.entity.primary_email[0].address |
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if getattr(self.entity, 'use_email', None): |
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return self.entity.use_email[0].address |
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return None |
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def allowed_massmail_keys(self): |
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"""returns a set of allowed email substitution keys |
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The default is to return the entity's attribute list but you might |
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override this method to allow extra keys. For instance, a Person |
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class might want to return a `companyname` key. |
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""" |
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return set(rschema.type |
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for rschema, attrtype in self.entity.e_schema.attribute_definitions() |
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if attrtype.type not in ('Password', 'Bytes')) |
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def as_email_context(self): |
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"""returns the dictionary as used by the sendmail controller to |
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build email bodies. |
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NOTE: the dictionary keys should match the list returned by the |
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`allowed_massmail_keys` method. |
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""" |
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return dict( (attr, getattr(self.entity, attr)) |
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for attr in self.allowed_massmail_keys() ) |
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class INotifiableAdapter(EntityAdapter): |
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__regid__ = 'INotifiable' |
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__select__ = implements('Any') |
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@implements_adapter_compat('INotifiableAdapter') |
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def notification_references(self, view): |
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"""used to control References field of email send on notification |
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for this entity. `view` is the notification view. |
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Should return a list of eids which can be used to generate message |
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identifiers of previously sent email(s) |
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""" |
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itree = self.entity.cw_adapt_to('ITree') |
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if itree is not None: |
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return itree.path()[:-1] |
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return () |
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class IFTIndexableAdapter(EntityAdapter): |
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__regid__ = 'IFTIndexable' |
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__select__ = implements('Any') |
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def fti_containers(self, _done=None): |
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if _done is None: |
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_done = set() |
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entity = self.entity |
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_done.add(entity.eid) |
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containers = tuple(entity.e_schema.fulltext_containers()) |
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if containers: |
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for rschema, target in containers: |
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if target == 'object': |
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targets = getattr(entity, rschema.type) |
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else: |
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targets = getattr(entity, 'reverse_%s' % rschema) |
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for entity in targets: |
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if entity.eid in _done: |
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104 |
continue |
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105 |
for container in entity.cw_adapt_to('IFTIndexable').fti_containers(_done): |
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106 |
yield container |
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107 |
yielded = True |
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108 |
else: |
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109 |
yield entity |
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110 |
|
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111 |
def get_words(self): |
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112 |
"""used by the full text indexer to get words to index |
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113 |
|
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114 |
this method should only be used on the repository side since it depends |
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115 |
on the logilab.database package |
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116 |
|
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117 |
:rtype: list |
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118 |
:return: the list of indexable word of this entity |
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119 |
""" |
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120 |
from logilab.database.fti import tokenize |
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121 |
# take care to cases where we're modyfying the schema |
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122 |
entity = self.entity |
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123 |
pending = self._cw.transaction_data.setdefault('pendingrdefs', set()) |
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124 |
words = [] |
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125 |
for rschema in entity.e_schema.indexable_attributes(): |
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126 |
if (entity.e_schema, rschema) in pending: |
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127 |
continue |
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128 |
try: |
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129 |
value = entity.printable_value(rschema, format='text/plain') |
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130 |
except TransformError: |
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131 |
continue |
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132 |
except: |
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133 |
self.exception("can't add value of %s to text index for entity %s", |
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134 |
rschema, entity.eid) |
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135 |
continue |
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136 |
if value: |
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137 |
words += tokenize(value) |
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138 |
for rschema, role in entity.e_schema.fulltext_relations(): |
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139 |
if role == 'subject': |
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140 |
for entity_ in getattr(entity, rschema.type): |
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141 |
words += entity_.cw_adapt_to('IFTIndexable').get_words() |
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142 |
else: # if role == 'object': |
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143 |
for entity_ in getattr(entity, 'reverse_%s' % rschema.type): |
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144 |
words += entity_.cw_adapt_to('IFTIndexable').get_words() |
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145 |
return words |
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146 |
|
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147 |
|
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148 |
class IDownloadableAdapter(EntityAdapter): |
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149 |
"""interface for downloadable entities""" |
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150 |
__regid__ = 'IDownloadable' |
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151 |
__select__ = implements(IDownloadable) # XXX for bw compat, else should be abstract |
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152 |
|
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153 |
@implements_adapter_compat('IDownloadable') |
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154 |
def download_url(self): # XXX not really part of this interface |
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155 |
"""return an url to download entity's content""" |
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156 |
raise NotImplementedError |
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157 |
@implements_adapter_compat('IDownloadable') |
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158 |
def download_content_type(self): |
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159 |
"""return MIME type of the downloadable content""" |
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160 |
raise NotImplementedError |
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161 |
@implements_adapter_compat('IDownloadable') |
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162 |
def download_encoding(self): |
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163 |
"""return encoding of the downloadable content""" |
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164 |
raise NotImplementedError |
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165 |
@implements_adapter_compat('IDownloadable') |
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166 |
def download_file_name(self): |
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167 |
"""return file name of the downloadable content""" |
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168 |
raise NotImplementedError |
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169 |
@implements_adapter_compat('IDownloadable') |
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170 |
def download_data(self): |
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171 |
"""return actual data of the downloadable content""" |
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172 |
raise NotImplementedError |
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173 |
|
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174 |
|
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175 |
class ITreeAdapter(EntityAdapter): |
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176 |
"""This adapter has to be overriden to be configured using the |
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177 |
tree_relation, child_role and parent_role class attributes to |
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178 |
benefit from this default implementation |
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179 |
""" |
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180 |
__regid__ = 'ITree' |
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181 |
__select__ = implements(ITree) # XXX for bw compat, else should be abstract |
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182 |
|
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183 |
child_role = 'subject' |
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184 |
parent_role = 'object' |
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185 |
|
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186 |
@property |
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187 |
def tree_relation(self): |
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188 |
warn('[3.9] tree_attribute is deprecated, define tree_relation on a custom ' |
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189 |
'ITree for %s instead' % (self.entity.__class__), |
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190 |
DeprecationWarning) |
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191 |
return self.entity.tree_attribute |
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192 |
|
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193 |
@implements_adapter_compat('ITree') |
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194 |
def children_rql(self): |
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195 |
"""returns RQL to get children |
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196 |
|
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197 |
XXX should be removed from the public interface |
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198 |
""" |
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199 |
return self.entity.cw_related_rql(self.tree_relation, self.parent_role) |
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200 |
|
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201 |
@implements_adapter_compat('ITree') |
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202 |
def different_type_children(self, entities=True): |
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203 |
"""return children entities of different type as this entity. |
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204 |
|
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205 |
according to the `entities` parameter, return entity objects or the |
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206 |
equivalent result set |
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207 |
""" |
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208 |
res = self.entity.related(self.tree_relation, self.parent_role, |
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209 |
entities=entities) |
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210 |
eschema = self.entity.e_schema |
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211 |
if entities: |
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212 |
return [e for e in res if e.e_schema != eschema] |
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213 |
return res.filtered_rset(lambda x: x.e_schema != eschema, self.entity.cw_col) |
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214 |
|
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215 |
@implements_adapter_compat('ITree') |
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216 |
def same_type_children(self, entities=True): |
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217 |
"""return children entities of the same type as this entity. |
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218 |
|
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219 |
according to the `entities` parameter, return entity objects or the |
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220 |
equivalent result set |
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221 |
""" |
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222 |
res = self.entity.related(self.tree_relation, self.parent_role, |
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223 |
entities=entities) |
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224 |
eschema = self.entity.e_schema |
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225 |
if entities: |
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226 |
return [e for e in res if e.e_schema == eschema] |
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227 |
return res.filtered_rset(lambda x: x.e_schema is eschema, self.entity.cw_col) |
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228 |
|
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229 |
@implements_adapter_compat('ITree') |
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230 |
def is_leaf(self): |
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231 |
"""returns true if this node as no child""" |
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232 |
return len(self.children()) == 0 |
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233 |
|
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234 |
@implements_adapter_compat('ITree') |
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235 |
def is_root(self): |
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236 |
"""returns true if this node has no parent""" |
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237 |
return self.parent() is None |
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238 |
|
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239 |
@implements_adapter_compat('ITree') |
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240 |
def root(self): |
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241 |
"""return the root object""" |
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242 |
return self._cw.entity_from_eid(self.path()[0]) |
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243 |
|
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|
244 |
@implements_adapter_compat('ITree') |
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245 |
def parent(self): |
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246 |
"""return the parent entity if any, else None (e.g. if we are on the |
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247 |
root) |
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248 |
""" |
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249 |
try: |
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250 |
return self.entity.related(self.tree_relation, self.child_role, |
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251 |
entities=True)[0] |
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252 |
except (KeyError, IndexError): |
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253 |
return None |
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254 |
|
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255 |
@implements_adapter_compat('ITree') |
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256 |
def children(self, entities=True, sametype=False): |
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257 |
"""return children entities |
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258 |
|
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|
259 |
according to the `entities` parameter, return entity objects or the |
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260 |
equivalent result set |
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261 |
""" |
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262 |
if sametype: |
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263 |
return self.same_type_children(entities) |
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264 |
else: |
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265 |
return self.entity.related(self.tree_relation, self.parent_role, |
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266 |
entities=entities) |
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267 |
|
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|
268 |
@implements_adapter_compat('ITree') |
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269 |
def iterparents(self, strict=True): |
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270 |
def _uptoroot(self): |
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271 |
curr = self |
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272 |
while True: |
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273 |
curr = curr.parent() |
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274 |
if curr is None: |
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275 |
break |
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276 |
yield curr |
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277 |
curr = curr.cw_adapt_to('ITree') |
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278 |
if not strict: |
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279 |
return chain([self.entity], _uptoroot(self)) |
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280 |
return _uptoroot(self) |
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281 |
|
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282 |
@implements_adapter_compat('ITree') |
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283 |
def iterchildren(self, _done=None): |
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284 |
"""iterates over the item's children""" |
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285 |
if _done is None: |
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286 |
_done = set() |
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287 |
for child in self.children(): |
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288 |
if child.eid in _done: |
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289 |
self.error('loop in %s tree', child.__regid__.lower()) |
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290 |
continue |
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291 |
yield child |
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292 |
_done.add(child.eid) |
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293 |
|
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294 |
@implements_adapter_compat('ITree') |
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295 |
def prefixiter(self, _done=None): |
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296 |
if _done is None: |
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297 |
_done = set() |
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298 |
if self.entity.eid in _done: |
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299 |
return |
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300 |
_done.add(self.entity.eid) |
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301 |
yield self.entity |
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302 |
for child in self.same_type_children(): |
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303 |
for entity in child.cw_adapt_to('ITree').prefixiter(_done): |
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304 |
yield entity |
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305 |
|
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306 |
@cached |
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307 |
@implements_adapter_compat('ITree') |
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308 |
def path(self): |
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309 |
"""returns the list of eids from the root object to this object""" |
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310 |
path = [] |
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311 |
adapter = self |
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312 |
entity = adapter.entity |
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313 |
while entity is not None: |
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314 |
if entity.eid in path: |
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315 |
self.error('loop in %s tree', entity.__regid__.lower()) |
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316 |
break |
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317 |
path.append(entity.eid) |
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318 |
try: |
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319 |
# check we are not jumping to another tree |
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320 |
if (adapter.tree_relation != self.tree_relation or |
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321 |
adapter.child_role != self.child_role): |
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322 |
break |
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323 |
entity = adapter.parent() |
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324 |
adapter = entity.cw_adapt_to('ITree') |
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325 |
except AttributeError: |
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326 |
break |
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|
327 |
path.reverse() |
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328 |
return path |
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|
329 |
|
5722
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|
330 |
|
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331 |
class IProgressAdapter(EntityAdapter): |
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332 |
"""something that has a cost, a state and a progression. |
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|
333 |
|
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334 |
You should at least override progress_info an in_progress methods on concret |
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335 |
implementations. |
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336 |
""" |
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337 |
__regid__ = 'IProgress' |
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338 |
__select__ = implements(IProgress) # XXX for bw compat, should be abstract |
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|
339 |
|
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340 |
@property |
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341 |
@implements_adapter_compat('IProgress') |
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342 |
def cost(self): |
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343 |
"""the total cost""" |
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344 |
return self.progress_info()['estimated'] |
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345 |
|
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346 |
@property |
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347 |
@implements_adapter_compat('IProgress') |
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348 |
def revised_cost(self): |
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349 |
return self.progress_info().get('estimatedcorrected', self.cost) |
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350 |
|
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351 |
@property |
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352 |
@implements_adapter_compat('IProgress') |
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353 |
def done(self): |
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354 |
"""what is already done""" |
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355 |
return self.progress_info()['done'] |
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|
356 |
|
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357 |
@property |
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358 |
@implements_adapter_compat('IProgress') |
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359 |
def todo(self): |
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360 |
"""what remains to be done""" |
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361 |
return self.progress_info()['todo'] |
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|
362 |
|
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|
363 |
@implements_adapter_compat('IProgress') |
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|
364 |
def progress_info(self): |
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365 |
"""returns a dictionary describing progress/estimated cost of the |
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366 |
version. |
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|
367 |
|
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368 |
- mandatory keys are (''estimated', 'done', 'todo') |
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|
369 |
|
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|
370 |
- optional keys are ('notestimated', 'notestimatedcorrected', |
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|
371 |
'estimatedcorrected') |
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|
372 |
|
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373 |
'noestimated' and 'notestimatedcorrected' should default to 0 |
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374 |
'estimatedcorrected' should default to 'estimated' |
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375 |
""" |
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376 |
raise NotImplementedError |
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|
377 |
|
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|
378 |
@implements_adapter_compat('IProgress') |
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|
379 |
def finished(self): |
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380 |
"""returns True if status is finished""" |
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381 |
return not self.in_progress() |
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|
382 |
|
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|
383 |
@implements_adapter_compat('IProgress') |
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|
384 |
def in_progress(self): |
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385 |
"""returns True if status is not finished""" |
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386 |
raise NotImplementedError |
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|
387 |
|
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|
388 |
@implements_adapter_compat('IProgress') |
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|
389 |
def progress(self): |
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390 |
"""returns the % progress of the task item""" |
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391 |
try: |
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|
392 |
return 100. * self.done / self.revised_cost |
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|
393 |
except ZeroDivisionError: |
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394 |
# total cost is 0 : if everything was estimated, task is completed |
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|
395 |
if self.progress_info().get('notestimated'): |
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396 |
return 0. |
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397 |
return 100 |
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|
398 |
|
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399 |
@implements_adapter_compat('IProgress') |
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400 |
def progress_class(self): |
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401 |
return '' |
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|
402 |
|
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|
403 |
|
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404 |
class IMileStoneAdapter(IProgressAdapter): |
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405 |
__regid__ = 'IMileStone' |
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406 |
__select__ = implements(IMileStone) # XXX for bw compat, should be abstract |
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|
407 |
|
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408 |
parent_type = None # specify main task's type |
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|
409 |
|
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410 |
@implements_adapter_compat('IMileStone') |
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411 |
def get_main_task(self): |
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412 |
"""returns the main ITask entity""" |
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413 |
raise NotImplementedError |
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|
414 |
|
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415 |
@implements_adapter_compat('IMileStone') |
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416 |
def initial_prevision_date(self): |
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417 |
"""returns the initial expected end of the milestone""" |
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418 |
raise NotImplementedError |
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|
419 |
|
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420 |
@implements_adapter_compat('IMileStone') |
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421 |
def eta_date(self): |
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422 |
"""returns expected date of completion based on what remains |
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423 |
to be done |
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424 |
""" |
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425 |
raise NotImplementedError |
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|
426 |
|
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427 |
@implements_adapter_compat('IMileStone') |
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428 |
def completion_date(self): |
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429 |
"""returns date on which the subtask has been completed""" |
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430 |
raise NotImplementedError |
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|
431 |
|
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432 |
@implements_adapter_compat('IMileStone') |
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433 |
def contractors(self): |
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434 |
"""returns the list of persons supposed to work on this task""" |
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435 |
raise NotImplementedError |