Revision 6f4bce7b pithos/backends/lib/xfeatures.py
| b/pithos/backends/lib/xfeatures.py | ||
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# interpreted as representing official policies, either expressed |
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# or implied, of GRNET S.A. |
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from collections import defaultdict |
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|
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from dbworker import DBWorker |
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If the path already inherits a feature or |
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bestows to paths already inheriting a feature, |
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create no feature and return None. |
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If the path has a feature, return it. |
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""" |
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prefixes = self.xfeature_list(path) |
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pl = len(prefixes) |
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if (pl > 1) or (pl == 1 and prefixes[0][0] != path): |
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return None |
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if pl == 1 and prefixes[0][0] == path: |
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return prefixes[0][1] |
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q = "insert into xfeatures (path) values (?)" |
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id = self.execute(q, (path,)).lastrowid |
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return id |
| ... | ... | |
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q = "delete from xfeatures where path = ?" |
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self.execute(q, (path,)) |
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def feature_list(self, feature): |
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"""Return the list of all key, value pairs |
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associated with a feature. |
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""" |
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def feature_dict(self, feature): |
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"""Return a dict mapping keys to list of values for feature.""" |
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q = "select key, value from xfeaturevals where feature = ?" |
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self.execute(q, (feature,)) |
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return self.fetchall() |
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d = defaultdict(list) |
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for key, value in self.fetchall(): |
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d[key].append(value) |
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return d |
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def feature_set(self, feature, key, value): |
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"""Associate a key, value pair with a feature.""" |
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