def createMetaAccession(self):
metaAccessionDict = {}
for accession in self.accessions:
for item in accession.get_items():
# Clobber entries from previous accessions, keep the newest
metaAccessionDict[item.get_canonical_filepath()] = \
item.get_root_path()
metaAccessionList = []
for canonicalFilepath in metaAccessionDict:
metaAccessionList.append(
metaAccessionDict[canonicalFilepath] +
"/" + canonicalFilepath)
metaAccession = Batch()
for reconstructedFilePath in metaAccessionList:
metaAccession.add_item(Item(reconstructedFilePath))
return metaAccession
