| [2187] | 1 | class Record(object): |
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| 2 | _identity_field = None |
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| 3 | def get(self, field): |
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| 4 | try: |
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| 5 | return self.__getattribute__(field) |
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| 6 | except: |
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| 7 | return None |
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| 8 | def _formatField(self, field): |
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| 9 | v = self.get(field) |
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| 10 | if callable(v): |
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| 11 | v = v() |
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| 12 | if hasattr(v, '__iter__'): |
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| 13 | if len(v) == 0: |
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| 14 | return '[]' |
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| 15 | else: |
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| 16 | return '[%d x %s]'%(len(v), type(v[0])) |
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| 17 | else: |
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| 18 | return repr(v) |
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| 19 | def _fields(self): |
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| 20 | ignore = self._ignore() |
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| 21 | keys = sorted(self.__class__.__dict__.keys()) |
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| 22 | return [(k,self._formatField(k)) for k in keys if k[0]!="_" and k not in ignore] |
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| 23 | def __repr__(self): |
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| 24 | classname = self.__class__.__name__ |
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| 25 | |
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| 26 | if self._identity_field: |
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| 27 | identity = self.__dict__.get(self._identity_field) |
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| 28 | identity = ' ' + (identity and repr(identity) or 'hash=%d'%hash(self)) |
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| 29 | else: |
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| 30 | identity = '' |
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| 31 | |
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| 32 | payload = " ".join(["%s=%s" % (k, v) for k,v in self._fields()]) |
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| 33 | if len(payload) > 0: |
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| 34 | payload = ": "+payload |
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| 35 | |
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| 36 | return "<%s%s%s>" % (classname, identity, payload) |
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| 37 | def _ignore(self): |
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| 38 | return [self._identity_field, 'c', 'query', 'get'] |
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| 39 | |
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| 40 | class FormattableRecord(Record): |
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| 41 | _format = {} |
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| 42 | def _formatField(self, field): |
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| 43 | func = self._format.get(field) |
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| 44 | if func: |
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| 45 | return func(self.get(field)) |
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| 46 | else: |
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| 47 | return super(FormattableRecord, self)._formatField(field) |
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| 48 | |
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| 49 | class NullableRecord(FormattableRecord): |
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| 50 | _default = {} |
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| 51 | def get(self, field): |
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| 52 | v = self.__dict__.get(field) |
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| 53 | if v != None: |
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| 54 | return v |
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| 55 | else: |
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| 56 | return self._default.get(field) |
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