1 | from xml.dom import minidom |
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2 | |
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3 | from zope.interface import implements |
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4 | from zope.component import adapts |
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5 | |
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6 | from Products.Archetypes import atapi |
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7 | from Products.Archetypes.interfaces import IBaseObject |
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8 | from Products.ATContentTypes.interface import IATTopicCriterion |
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9 | from Products.Marshall.registry import getComponent |
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10 | from Products.Archetypes import config as atcfg |
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11 | |
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12 | from collective.transmogrifier.interfaces import ITransmogrifier |
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13 | |
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14 | from quintagroup.transmogrifier.interfaces import IExportDataCorrector |
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15 | |
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16 | class ReferenceExporter(object): |
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17 | """ Add reference fields to XML, generated by Marshall product. |
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18 | """ |
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19 | implements(IExportDataCorrector) |
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20 | adapts(IBaseObject, ITransmogrifier) |
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21 | |
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22 | def __init__(self, context, transmogrifier): |
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23 | self.context = context |
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24 | self.transmogrifier = transmogrifier |
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25 | |
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26 | def __call__(self, data): |
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27 | data['data'] = self.exportReferences(data['data']) |
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28 | return data |
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29 | |
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30 | def exportReferences(self, xml): |
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31 | """ Marshall 1.0.0 doesn't export references, do it manually. |
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32 | """ |
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33 | doc = minidom.parseString(xml) |
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34 | root = doc.documentElement |
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35 | for fname in self.context.Schema().keys(): |
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36 | if not isinstance(self.context.Schema()[fname], atapi.ReferenceField): |
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37 | continue |
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38 | values = self.context[fname] |
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39 | if not values: |
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40 | continue |
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41 | elem = doc.createElement("field") |
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42 | attr = doc.createAttribute("name") |
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43 | attr.value = fname |
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44 | elem.setAttributeNode(attr) |
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45 | if type(values) not in (tuple, list): |
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46 | values = [values,] |
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47 | for value in values: |
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48 | ref = doc.createElement('reference') |
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49 | uid = doc.createElement('uid') |
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50 | value = doc.createTextNode(str(value)) |
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51 | uid.appendChild(value) |
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52 | ref.appendChild(uid) |
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53 | elem.appendChild(ref) |
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54 | root.appendChild(elem) |
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55 | return doc.toxml('utf-8') |
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56 | |
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57 | class CriterionExporter(ReferenceExporter): |
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58 | """ Special marshalling adapter for topic criterias. |
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59 | """ |
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60 | |
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61 | implements(IExportDataCorrector) |
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62 | adapts(IATTopicCriterion, ITransmogrifier) |
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63 | |
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64 | def __init__(self, context, transmogrifier): |
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65 | self.context = context |
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66 | self.transmogrifier = transmogrifier |
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67 | self.marshaller = getComponent('atxml') |
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68 | |
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69 | def __call__(self, data): |
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70 | if data['data'] is not None: |
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71 | return super(CriterionExporter, self).__call__(data) |
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72 | # Marshall fails when object has UID that is equal to None |
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73 | # fix it here by setting it to empty string and after marshalling setting back to old value |
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74 | old_uid_attr = getattr(self.context, atcfg.UUID_ATTR) |
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75 | setattr(self.context, atcfg.UUID_ATTR, "") |
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76 | |
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77 | ct, length, xml = self.marshaller.marshall(self.context) |
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78 | xml = self.exportReferences(xml) |
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79 | data['data'] = xml |
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80 | |
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81 | setattr(self.context, atcfg.UUID_ATTR, old_uid_attr) |
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82 | return data |
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