annotate planemo/lib/python3.7/site-packages/boto/sdb/db/query.py @ 1:56ad4e20f292 draft

"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
parents d30785e31577
children
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1 from boto.compat import six
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2 # Copyright (c) 2006,2007,2008 Mitch Garnaat http://garnaat.org/
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3 #
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4 # Permission is hereby granted, free of charge, to any person obtaining a
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5 # copy of this software and associated documentation files (the
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6 # "Software"), to deal in the Software without restriction, including
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7 # without limitation the rights to use, copy, modify, merge, publish, dis-
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8 # tribute, sublicense, and/or sell copies of the Software, and to permit
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9 # persons to whom the Software is furnished to do so, subject to the fol-
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10 # lowing conditions:
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11 #
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12 # The above copyright notice and this permission notice shall be included
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13 # in all copies or substantial portions of the Software.
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14 #
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15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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16 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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17 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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18 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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19 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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20 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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21 # IN THE SOFTWARE.
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22
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23 class Query(object):
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24 __local_iter__ = None
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25 def __init__(self, model_class, limit=None, next_token=None, manager=None):
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26 self.model_class = model_class
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27 self.limit = limit
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28 self.offset = 0
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29 if manager:
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30 self.manager = manager
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31 else:
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32 self.manager = self.model_class._manager
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33 self.filters = []
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34 self.select = None
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35 self.sort_by = None
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36 self.rs = None
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37 self.next_token = next_token
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38
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39 def __iter__(self):
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40 return iter(self.manager.query(self))
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41
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42 def next(self):
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43 if self.__local_iter__ is None:
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44 self.__local_iter__ = self.__iter__()
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45 return next(self.__local_iter__)
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46
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47 def filter(self, property_operator, value):
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48 self.filters.append((property_operator, value))
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49 return self
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50
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51 def fetch(self, limit, offset=0):
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52 """Not currently fully supported, but we can use this
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53 to allow them to set a limit in a chainable method"""
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54 self.limit = limit
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55 self.offset = offset
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56 return self
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57
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58 def count(self, quick=True):
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59 return self.manager.count(self.model_class, self.filters, quick, self.sort_by, self.select)
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60
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61 def get_query(self):
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62 return self.manager._build_filter_part(self.model_class, self.filters, self.sort_by, self.select)
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63
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64 def order(self, key):
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65 self.sort_by = key
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66 return self
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67
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68 def to_xml(self, doc=None):
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69 if not doc:
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70 xmlmanager = self.model_class.get_xmlmanager()
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71 doc = xmlmanager.new_doc()
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72 for obj in self:
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73 obj.to_xml(doc)
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74 return doc
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75
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76 def get_next_token(self):
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77 if self.rs:
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78 return self.rs.next_token
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79 if self._next_token:
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80 return self._next_token
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81 return None
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82
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83 def set_next_token(self, token):
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84 self._next_token = token
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85
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86 next_token = property(get_next_token, set_next_token)