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1 # copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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2 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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3 # |
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4 # This file is part of CubicWeb. |
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5 # |
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6 # CubicWeb is free software: you can redistribute it and/or modify it under the |
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7 # terms of the GNU Lesser General Public License as published by the Free |
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8 # Software Foundation, either version 2.1 of the License, or (at your option) |
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9 # any later version. |
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10 # |
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11 # logilab-common is distributed in the hope that it will be useful, but WITHOUT |
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12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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13 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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14 # details. |
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15 # |
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16 # You should have received a copy of the GNU Lesser General Public License along |
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17 # with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
1 """plan execution of rql queries on multiple sources |
18 """plan execution of rql queries on multiple sources |
2 |
19 |
3 the best way to understand what are we trying to acheive here is to read the |
20 the best way to understand what are we trying to acheive here is to read the |
4 unit-tests in unittest_msplanner.py |
21 unit-tests in unittest_msplanner.py |
5 |
22 |
67 1. return the result of Any X WHERE X owned_by Y from system source, that's |
84 1. return the result of Any X WHERE X owned_by Y from system source, that's |
68 enough (optimization of the sql querier will avoid join on CWUser, so we |
85 enough (optimization of the sql querier will avoid join on CWUser, so we |
69 will directly get local eids) |
86 will directly get local eids) |
70 |
87 |
71 |
88 |
72 :organization: Logilab |
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73 :copyright: 2003-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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74 :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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75 :license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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76 """ |
89 """ |
77 __docformat__ = "restructuredtext en" |
90 __docformat__ = "restructuredtext en" |
78 |
91 |
79 from itertools import imap, ifilterfalse |
92 from itertools import imap, ifilterfalse |
80 |
93 |