1 | import logging, types |
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2 | import transaction |
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3 | from zope.interface import implements |
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4 | from zope.component import getMultiAdapter |
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5 | from zope.component import queryMultiAdapter |
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6 | |
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7 | from Missing import MV |
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8 | from Acquisition import aq_inner |
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9 | from Acquisition import aq_parent |
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10 | |
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11 | from Products.CMFCore.utils import getToolByName |
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12 | from Products.ZCatalog.Catalog import safe_callable |
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13 | |
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14 | try: |
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15 | from plone.indexer.interfaces import IIndexableObject |
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16 | except ImportError: |
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17 | from plone.app.content.interfaces import IIndexableObjectWrapper \ |
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18 | as _old_IIndexableObjectWrapper |
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19 | IS_NEW = False |
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20 | else: |
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21 | IS_NEW = True |
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22 | |
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23 | |
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24 | from quintagroup.catalogupdater.interfaces import ICatalogUpdater |
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25 | |
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26 | LOG = logging.getLogger('quintagroup.catalogupdater') |
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27 | |
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28 | |
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29 | class CatalogUpdaterUtility(object): |
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30 | |
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31 | implements(ICatalogUpdater) |
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32 | |
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33 | def validate(self, cat, cols): |
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34 | # Validate catalog and column name |
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35 | AVAIL_COLTYPES = list(types.StringTypes) + [types.ListType, types.TupleType] |
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36 | |
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37 | _cat = getattr(cat, '_catalog', None) |
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38 | if _cat is None: |
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39 | raise AttributeError("%s - is not ZCatalog based catalog" % cat) |
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40 | |
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41 | if not type(cols) in AVAIL_COLTYPES: |
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42 | raise TypeError("'columns' parameter must be one of the following " \ |
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43 | "types: %s" % AVAIL_COLTYPES) |
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44 | # Normalize columns |
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45 | if type(cols) in types.StringTypes: |
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46 | cols = [cols,] |
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47 | # Check is every column present in the catalog |
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48 | for col in cols: |
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49 | if not _cat.schema.has_key(col): |
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50 | raise AttributeError("'%s' - not presented column in %s catalog " % (col, cat)) |
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51 | |
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52 | return _cat, cols |
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53 | |
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54 | |
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55 | def getWrappedObjectNew(self, obj, portal, catalog): |
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56 | # Returned wrapped 'obj' object with IIndexable wrapper |
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57 | wrapper = None |
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58 | if not IIndexableObject.providedBy(obj): |
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59 | # This is the CMF 2.2 compatible approach, which should be used going forward |
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60 | wrapper = queryMultiAdapter((obj, catalog), IIndexableObject) |
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61 | return wrapper and wrapper or obj |
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62 | |
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63 | def getWrappedObjectOld(self, obj, portal, catalog): |
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64 | # Returned wrapped 'obj' object with IIndexable wrapper |
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65 | wf = getattr(self, 'portal_workflow', None) |
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66 | # A comment for all the frustrated developers which aren't able to pin |
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67 | # point the code which adds the review_state to the catalog. :) |
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68 | # The review_state var and some other workflow vars are added to the |
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69 | # indexable object wrapper throught the code in the following lines |
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70 | if wf is not None: |
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71 | vars = wf.getCatalogVariablesFor(obj) |
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72 | else: |
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73 | vars = {} |
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74 | |
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75 | w = getMultiAdapter((obj, portal), _old_IIndexableObjectWrapper) |
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76 | w.update(vars) |
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77 | |
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78 | return w |
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79 | |
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80 | |
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81 | def updateMetadata4All(self, catalog, columns): |
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82 | """ Look into appropriate method of ICatalogUpdate interface |
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83 | """ |
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84 | |
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85 | _catalog, columns = self.validate(catalog, columns) |
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86 | |
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87 | portal = getToolByName(catalog, 'portal_url').getPortalObject() |
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88 | root = aq_parent(portal) |
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89 | |
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90 | data = _catalog.data |
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91 | schema = _catalog.schema |
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92 | paths = _catalog.paths |
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93 | getWrappedObject = IS_NEW and self.getWrappedObjectNew or self.getWrappedObjectOld |
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94 | # For subtransaction support |
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95 | threshold = getattr(catalog, 'threshold', 10000) |
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96 | _v_total = 0 |
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97 | _v_transaction = None |
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98 | |
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99 | # For each catalog record update metadata |
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100 | for rid, md in data.items(): |
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101 | # get an object |
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102 | obj_uid = paths[rid] |
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103 | try: |
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104 | obj = root.unrestrictedTraverse(obj_uid) |
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105 | obj = getWrappedObject(obj, portal, catalog) |
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106 | except: |
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107 | LOG.error('updateMetadata4All could not resolve ' |
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108 | 'an object from the uid %r.' % obj_uid) |
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109 | continue |
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110 | |
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111 | mdlist = list(md) |
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112 | for column in columns: |
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113 | # calculate the column value |
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114 | attr=getattr(obj, column, MV) |
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115 | if(attr is not MV and safe_callable(attr)): attr=attr() |
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116 | # Update metadata value |
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117 | indx = schema[column] |
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118 | mdlist[indx] = attr |
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119 | |
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120 | # Update catalog record |
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121 | data[rid] = tuple(mdlist) |
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122 | |
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123 | # Steeled from ZCatalog |
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124 | if threshold is not None: |
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125 | # figure out whether or not to commit a subtransaction. |
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126 | t = id(transaction.get()) |
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127 | if t != _v_transaction: |
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128 | _v_total = 0 |
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129 | _v_transaction = t |
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130 | _v_total = _v_total + 1 |
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131 | if _v_total > threshold: |
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132 | transaction.savepoint(optimistic=True) |
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133 | catalog._p_jar.cacheGC() |
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134 | _v_total = 0 |
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135 | LOG.info('commiting subtransaction') |
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136 | |
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