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