""" Classes for managing metadata"""
from OFS.SimpleItem import SimpleItem
from Globals import InitializeClass,package_home
from OFS.Folder import Folder
from AccessControl import ClassSecurityInfo
from Products.PageTemplates.PageTemplateFile import PageTemplateFile
import os.path
import xml.dom.minidom
import OSAS_helpers
import logging
#ersetzt logging
def logger(txt,method,txt2):
"""logging"""
logging.info(txt+ txt2)
class OSAS_MetadataMapping(SimpleItem):
"""Einfaches Mapping Object"""
meta_type="OSAS_MetadataMapping__neu"
def readFieldsFromParent(self):
"""read all elements from root"""
return self.aq_parent.fieldList
def __init__(self,id,title,arglist):
"""init
@param id: id
@param title: title fuer zope navigation
@param arglist: dictionary mit Namen der zugelassenen generische Metadaten als key und Tripel als Werte (human readable, tag version,explanation
"""
self.id=id
self.title=title
for fieldName in arglist.keys():
setattr(self,"md_"+fieldName,arglist[fieldName])
manage_options = SimpleItem.manage_options+(
{'label':'Main Config','action':'changeMetadataMappingForm'},
)
def showSetXML(self,RESPONSE=None):
"""prints out the mapping as XML"""
ret=""""""%self.title
for fieldName in self.readFieldsFromParent():
entry=getattr(self,"md_"+fieldName)
if entry[2]=="": # no explanation of this field
ret+=""""""%(fieldName,entry[0],entry[1])
else:
ret+="""%s"""%(fieldName,entry[0],entry[1],entry[2])
ret+=""
if not RESPONSE:
return ret
else:
self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml')
return ret
def getValue(self,fieldName):
"""get md value
@param fieldName: Bezeichnung des gesuchten Metadatums
@retunr: Value des Metadatums"""
return getattr(self,"md_"+fieldName,(None,None,None))
def isEmptyValue(self,fieldName):
"""teste ob fielname in diesem Metadatenschema definiert ist"""
field=getattr(self,"md_"+fieldName,'')
if field[1]=='':
return 0
else:
return 1
def generateMappingHash(self):
"""erzeugen des dictionaries: generisches Feld -> Definition in diesem Schema"""
hash={}
for field in self.fieldList:
hash[field]=getattr(self,"md_"+field)
return hash
def changeMetadataMappingForm(self):
"""change"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','changeMetadataMapping.zpt')).__of__(self)
return pt()
def changeMetadataMapping(self,titleOfObject,RESPONSE=None):
"""change"""
self.title=titleOfObject
arglist=self.REQUEST.form
for fieldName in self.readFieldsFromParent():
setattr(self,"md_"+fieldName,(arglist[fieldName],arglist['label_'+fieldName],arglist['explanation_'+fieldName]))
if RESPONSE is not None:
RESPONSE.redirect('manage_main')
def manage_addMetadataMappingForm(self):
"""interface for adding the OSAS_root"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','addMetadataMappingForm.zpt')).__of__(self)
return pt()
def manage_addMetadataMapping(self,idOfObject,titleOfObject,RESPONSE=None):
"""add the OSAS_root"""
argList={}
for arg in self.fieldList:
if not (arg in ['idOfObject','titleOfObject']):
argList[arg]=(self.REQUEST.form[arg],self.REQUEST.form['label_'+arg],self.REQUEST.form['explanation_'+arg])
newObj=OSAS_MetadataMapping(idOfObject,titleOfObject,argList)
self._setObject(idOfObject,newObj)
if RESPONSE is not None:
RESPONSE.redirect('manage_main')
class OSAS_Metadata(Folder):
"""Foldertype enthält methoden zur Halbautomatischen Erstellung von Metadatenfiles"""
security=ClassSecurityInfo()
def __init__(self,id,linklabel,description,fields):
"""initialize a new instance"""
self.id = id
self.linklabel =linklabel #label fuer link auf add page
self.description=description #description of the method for link page
self.fieldList=fields.split(",")[0:]
meta_type='OSAS_Metadata__neu'
manage_options = Folder.manage_options+(
{'label':'Main Config','action':'changeMetadataForm'},
{'label':'Import XML Schema','action':'importXMLSchemaForm'},
{'label':'Select Fields for Display','action':'indicateDisplayFieldsForm'},
)
def showGenericXML(self,RESPONSE=None):
"""show generic fields as XML"""
ret=""""""%"generic"
for field in self.fieldList:
ret+=""""""%field
ret+=""
if not RESPONSE:
return ret
else:
self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml')
return ret
def showOverviewXML(self,RESPONSE):
"""gives an overview over the Metadata stored in this folder"""
ret=""""""%self.getId()
ret+=self.showGenericXML()
for entry in self.ZopeFind(self,obj_metatypes=['OSAS_MetadataMapping']):
ret+=entry[1].showSetXML()
ret+=""
if not RESPONSE:
return ret
else:
self.REQUEST.RESPONSE.setHeader('Content-Type','text/xml')
return ret
def generateMappingList(self):
"""Erzeuge Mapping"""
mapping={}
for dict in self.__dict__:
#print dict
obj=getattr(self,dict)
if hasattr(obj,'meta_type'):
if obj.meta_type=="OSAS_MetadataMapping":
mapping[obj.getId()]=obj.generateMappingHash()
return mapping
def generateMappingForType(self,type,clean="yes"):
"""erzeuge spezifisches Mapping"""
hash=self.generateMappingList()
if hash.has_key(type):
if clean=="yes":
temp={}
for x in hash[type].keys():
if not hash[type][x]=="":
temp[x]=hash[type][x]
return temp
else:
return hash[type]
else:
return {}
def getFieldList(self):
"""erzeuge string aus fields"""
try:
return string.join(self.fieldList,",")
except:
return ""
def getFields(self):
"""ausgabe der Felder"""
return self.fieldList
def getTypeTitle(self,id):
"""Title von ID"""
try:
obj=getattr(self,id)
return obj.title
except:
return id
def getStoredTypes(self):
"""Gebe gespeicherte typen zurück"""
types=[]
for obj in self.ZopeFind(self,obj_metatypes=['OSAS_MetadataMapping_neu']):
if obj.title=="":
title=obj.id
else:
title=obj.title
types.append((obj.id,title))
return types
def indicateDisplayFieldsForm(self):
"""form zur Makierung der Felder die in der Browserumgebung angezeigt werden"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','indicateDisplayFieldsForm.zpt')).__of__(self)
return pt()
def indicateDisplayFields(self,displayFields,RESPONSE=None):
"""set Displayfields
@param displayFields: Liste von Felder die im Browserenvironment angezeigt werden
"""
self.displayFields=OSAS_helpers.toList(displayFields)
if RESPONSE is not None:
RESPONSE.redirect('manage_main')
def getDisplayFieldsAsStr(self,indexMeta):
"""Gebe display fields als string zurück
@param path: Pfad zum Object
"""
ret=[]
try:
dom=xml.dom.minidom.parseString(indexMeta)
except:
logger("OSAS_metadata (getDisplayFieldsAsStr)",logging.INFO,"Cannot parse: %s"%indexMeta)
try:
bib = dom.getElementsByTagName("meta")[0].getElementsByTagName("bib")[0]
except:
return ""
try:
type=bib.getAttribute('type')
mapping=getattr(self,type).generateMappingHash()
except:
type='generic'
mapping=getattr(self,type).generateMappingHash()
for field in self.displayFields:
try:
ret.append(OSAS_helpers.getText(bib.getElementsByTagName(mapping[field][0])[0].childNodes))
except:
"""nothing"""
return "; ".join(ret)
security.declarePublic('changeMetadataForm')
def changeMetadataForm(self):
"""Main configuration"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','changeMetadata.zpt')).__of__(self)
return pt()
security.declarePublic('changeMetadata')
def changeMetadata(self,linklabel,description,fields,RESPONSE=None):
"""Change Metadata"""
self.linklabel=linklabel
self.description=description
self.fieldList=fields.split(",")[0:]
if RESPONSE is not None:
RESPONSE.redirect('manage_main')
security.declarePublic('index_html')
def importXMLSchemaForm(self):
"""form"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','importXMLSchemaForm.zpt')).__of__(self)
return pt()
def importXMLSchema(self,file,RESPONSE=None):
"""import xmlschema, Metadatenschema wird eingelesen und entsprechende Metadatenmappings angelegt."""
dom=xml.dom.minidom.parse(file)
sets=dom.getElementsByTagName('set')
#erster schritt: anlegen der fieldlist
for set in sets:
if set.getAttribute('name')=='generic':
list=[]
for entry in set.getElementsByTagName('entry'):
list.append(entry.getAttribute('genericName'))
self.fieldList=list[0:]
#zweiter schritt: anlegen der mapping
for set in sets:
id=set.getAttribute('name').encode('utf-8')
list=[]
argList={}
for entry in set.getElementsByTagName('entry'):
genericName=entry.getAttribute('genericName')
tag=entry.getAttribute('tag')
label=entry.getAttribute('label')
description=OSAS_helpers.getText(entry.childNodes)
argList[genericName]=(tag,label,description)
self._setObject(id,OSAS_MetadataMapping(id,id,argList))
if RESPONSE:
RESPONSE.write("Wrote: %s"%id)
def manage_addMetadataForm(self):
"""interface for adding the OSAS_add_Metadata"""
pt=PageTemplateFile(os.path.join(package_home(globals()),'zpt','addMetadataForm.zpt')).__of__(self)
return pt()
def manage_addMetadata(self,id,linklabel,description,fields,RESPONSE=None):
"""add the OSAS_root"""
newObj=OSAS_Metadata(id,linklabel,description,fields)
self.Destination()._setObject(id,newObj)
if RESPONSE is not None:
RESPONSE.redirect('manage_main')
InitializeClass(OSAS_Metadata)