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1 from OFS.Folder import Folder
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2 from Products.PageTemplates.PageTemplateFile import PageTemplateFile
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3 from Globals import package_home
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4 from AccessControl import ClassSecurityInfo
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5 import os.path
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6 import logging
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7
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8 from MetaDataMapping import MetaDataMapping
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9 from MetaData import MetaData
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10
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11 def normalizeBibField(bt, underscore=True):
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12 """returns normalised bib type for looking up mappings"""
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13 bt = bt.strip().replace(' ', '-').lower()
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14 if underscore:
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15 bt = bt.replace('_', '-')
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16
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17 return bt
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18
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19 def getBibdataFromDom(dom):
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20 """returns dict with all elements from bib-tag"""
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21 bibinfo = {}
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22 bib = dom.find(".//meta/bib")
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23 if bib is not None:
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24 # put type in @type
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25 type = bib.get('type')
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26 bibinfo['@type'] = normalizeBibField(type)
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27 # put all subelements in dict
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28 for e in bib:
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29 bibinfo[normalizeBibField(e.tag)] = getText(e)
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30
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31 return bibinfo
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32
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33 class MetaDataFolder(Folder):
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34 """provides methods for managing complete metadata structures"""
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35 meta_type='MetaDataFolder'
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36 security=ClassSecurityInfo()
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37 manage_options = Folder.manage_options+(
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38 {'label':'Main Config','action':'changeMetadataFolderForm'},
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39 {'label':'Import XML Schema','action':'importMetaDataExportXML'},
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40 #{'label':'Select Fields for Display','action':'indicateDisplayFieldsForm'},
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41 )
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42
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43 def __init__(self,id,title=''):
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44 """initialize a new instance"""
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45 self.id = id
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46 self.title = title
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47 self.metaDataServerUrl="" # muss mit change metadata gesetzt werden
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48
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49
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50 def getMDFromPathOrUrl(self,path):
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51 parsedurl = urlparse.urlparse(path)
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52 if parsedurl[0] != "":
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53 # has schema (e.g. http)
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54 url=path
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55 else:
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56 # path only
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57 if path.endswith("index.meta"):
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58 url =self.metaDataServerUrl%path
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59 else:
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60 url=os.path.join(self.metaDataServerUrl%path,'index.meta')
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61
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62 #logging.debug("get Metadata: %s"%url)
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63 md = getHttpData(url)
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64 return md
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65
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66 def getBibMapping(self, bibtype):
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67 """returns MetaDataMapping for bibtype"""
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68 # try type as id
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69 mapping = getattr(self.main.meta.bib, bibtype, None)
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70 if mapping is None:
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71 # try manually
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72 mapFolder = self.main.meta.bib
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73 for obj in mapFolder.objectValues():
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74 if obj.meta_type == "MetadataMapping":
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75 # real type is in title
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76 mapType = obj.title
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77 if mapType == bibtype:
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78 # try type as is
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79 return obj
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80
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81 if normalizeBibField(mapType, underscore=True) == normalizeBibField(bibtype, underscore=True):
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82 # try normalized type without underscore
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83 return obj
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84
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85 return mapping
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86
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87 def getBibFields(self, bibdata):
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88 """returns dict with metadata description for bibdata"""
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89 bibfields = {}
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90 bibtype = bibdata['@type']
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91 # get mapping from main/meta/bib
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92 mapping = self.getBibMapping(bibtype)
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93 if mapping is None:
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94 logging.error("getBibFields: no mapping for type: %s"%bibtype)
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95 return bibfields
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96
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97 # get field descriptions (copy so we can change it)
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98 bibfields = mapping.getFields().copy()
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99 # add field list
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100 bibfields['@fieldList'] = mapping.getFieldList()
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101
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102 return bibfields
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103
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104 def getBibMappedData(self, bibdata, allFields=False):
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105 """returns dict with metadata descriptions and data for bibdata"""
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106 bibfields = self.getBibFields(bibdata)
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107 mappedData = {}
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108 mappedList = []
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109 for bk in bibfields.keys():
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110 # ignore descriptions without data
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111 if not bibdata.get(bk, None):
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112 continue
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113
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114 # field description (copy so we can change it)
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115 bf = bibfields[bk].copy()
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116 # add value
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117 bf['value'] = bibdata[bk]
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118 mappedData[bk] = bf
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119 mappedList.append(bk)
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120
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121 if allFields and len(mappedData) < len(bibdata):
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122 # add fields that were not in bibfields
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123 for bk in bibdata.keys():
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124 if bk in mappedData or not bibdata[bk]:
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125 continue
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126
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127 mappedData[bk] = {'tag':bk, 'label':bk, 'value':bibdata[bk]}
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128 mappedList.append(bk)
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129
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130 mappedData['@fieldList'] = mappedList
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131 return mappedData
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132
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133 def getFormatted(self, template, path=None, dom=None, bibdata=None, allFields=False):
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134 """returns string with document data formatted according to template.
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135 gets data from server or dom or pre-parsed bibdata."""
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136 logging.debug("getFormatted(template=%s)"%(template))
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137
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138 if dom is None and bibdata is None:
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139 # get from server
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140 md = self.getMDFromPathOrUrl(path.replace("/mpiwg/online",""))
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141 #logging.debug("md:"+md)
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142 #dom = amara.parse(md)
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143 dom = ET.fromstring(md)
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144
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145 # get contents of bib tag
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146 if bibdata is None:
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147 bibdata = getBibdataFromDom(dom)
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148
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149 bibtype = bibdata['@type']
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150
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151 # get template
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152 tp=getattr(self,"%s_%s"%(template, bibtype.lower()), None)
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153 if tp is None:
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154 logging.warning("getFormatted: no template for: %s_%s"%(template, bibtype))
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155 # try generic
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156 tp=getattr(self,"%s_generic"%(template), None)
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157 if tp is None:
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158 logging.error("getFormatted: no generic template either: %s"%(template))
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159 return ""
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160
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161 # put bib field descriptions in mdHash
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162 bibfields = self.getBibMappedData(bibdata, allFields=allFields)
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163
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164 return tp(mdmap=bibfields, md=bibdata)
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165
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166
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167 def getFormattedMetaData(self, path=None, dom=None, bibdata=None):
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168 """get the metadafrom server"""
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169 logging.debug("getFormattedMetaData(path=%s)"%path)
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170 return self.getFormatted('metadata_template', path=path, dom=dom, bibdata=bibdata)
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171
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172 def getFormattedMetaDataShort(self, path=None, dom=None, bibdata=None):
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173 """get the metadafrom server"""
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174 logging.debug("getFormattedMetaDataShort(path=%s)"%path)
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175 return self.getFormatted('metadata_template', path=path, dom=dom, bibdata=bibdata)
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176
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177 def getFormattedMetaDataExtended(self,path=None, dom=None, bibdata=None):
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178 """get the metadafrom server"""
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179 logging.debug("getFormattedMetaDataExtended(path=%s)"%path)
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180 return self.getFormatted('metadata_extended_template', path=path, dom=dom, bibdata=bibdata, allFields=True)
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181
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182 def getFormattedLabel(self,path=None, dom=None, bibdata=None):
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183 """get the metadafrom server"""
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184 logging.debug("getFormattedLabel(%s)"%path)
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185 return self.getFormatted('label_template', path=path, dom=dom, bibdata=bibdata)
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186
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187 def getFormattedMetaDataShortFromServer(self,path):
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188 """get the metadafrom server"""
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189 logging.debug("getFormattedMetaDataShortFromServer(path=%s)"%path)
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190 return self.getFormatted('metadata_template', path)
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191
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192 def getFormattedMetaDataExtendedFromServer(self,path):
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193 """get the metadafrom server"""
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194 logging.debug("getFormattedMetaDataExtendedFromServer(path=%s)"%path)
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195 return self.getFormatted('metadata_extended_template', path=path, allFields=True)
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196
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197 def getFormattedLabelFromServer(self,path):
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198 """get the metadafrom server"""
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199 logging.debug("getFormattedLabelFromServer(%s)"%path)
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200 return self.getFormatted('label_template', path)
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201
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202
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203 changeMetaDataFolderForm = PageTemplateFile('zpt/changeMetaDataFolder',globals())
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204
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205 security.declarePublic('changeMetaDataFolder')
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206 def changeMetaDataFolder(self,title,metaDataServerUrl,RESPONSE=None):
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207 """Change MetaDataFolder"""
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208 self.title = title
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209 self.metaDataServerUrl=metaDataServerUrl
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210 if RESPONSE is not None:
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211 RESPONSE.redirect('manage_main')
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212
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213
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214 manage_addMetaDataFolderForm = PageTemplateFile('zpt/addMetaDataFolderForm',globals())
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215
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216 def manage_addMetaDataFolder(self,id,title,RESPONSE=None):
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217 """a MetaDataFolder objekt"""
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218 newObj=MetaDataFolder(id,title)
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219 self.Destination()._setObject(id,newObj)
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220 if RESPONSE is not None:
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221 RESPONSE.redirect('manage_main')
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222 |