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1
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class MetaCollections(): |
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2
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def __init__(self): |
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3
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self._metas = {} |
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4
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5
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def reset(self): |
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6
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self._metas = {} |
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7
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8
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def get_collection(self, name): |
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9
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if name not in self._metas: |
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10
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self._metas[name] = {} |
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11
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return self._metas[name] |
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12
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13
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def get(self, name, subject, allow_empty=False): |
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14
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metas = self.get_collection(name) |
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15
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if subject not in metas and allow_empty: |
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16
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metas[subject] = [] |
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17
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return metas[subject] |
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18
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19
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def add(self, name, subject, value, assert_not_in=True, allow_multiple=False): |
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20
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collection = self.get(name, subject, allow_empty=True) |
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21
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if value in collection: |
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22
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if assert_not_in: |
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23
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raise Exception() # TODO: Exception perso |
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24
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if not allow_multiple: |
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25
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return |
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26
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collection.append(value) |
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27
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28
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def remove(self, name, subject, value, allow_empty=False, allow_not_in=False): |
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29
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collection = self.get(name, subject, allow_empty=allow_empty) |
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30
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try: |
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31
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collection.remove(value) |
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32
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except ValueError: |
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33
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if not allow_not_in: |
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34
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raise |
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35
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36
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def have(self, name, subject, value, allow_empty=False): |
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37
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collection = self.get(name, subject, allow_empty) |
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38
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return value in collection |
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39
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40
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def unset(self, name, subject, allow_empty=False): |
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41
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metas = self.get_collection(name) |
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42
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if subject not in metas and allow_empty: |
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43
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return |
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44
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del(metas[subject]) |
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45
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46
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def clean(self, name): |
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47
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metas = self.get_collection(name) |
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48
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cleaned_metas = dict(metas) |
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49
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for meta in metas: |
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50
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if not len(metas[meta]): |
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51
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del (cleaned_metas[meta]) |
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52
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self._metas[name] = cleaned_metas |
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53
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buxx /
synergine
