vd18 updated

data/vd18-online.json

@@ -4,19 +4,19 @@
         null
     ],
     "1735": [
-        "005973589",
-        "005934303",
+        "10812180",
+        "10781420",
         null
     ],
     "1736": [
-        "005181674",
-        "025238787",
-        "006972160",
-        "005934133",
-        "005977274",
-        "025238795",
+        "10294651",
+        "10756035",
+        "11525584",
+        "10781315",
+        "10815171",
+        "10786686",
         null,
-        "004835662",
+        "10097376",
         null
     ]
 }

view/vd18.py

@@ -13,6 +13,7 @@ from librair import interfaces
 
 online = schemas.json.reader("data/vd18-online.json")
 vd18 = interfaces.unapi.Client("http://unapi.gbv.de", "vd18", "ppn")
+vd18_sru = interfaces.sru.Client("http://sru.gbv.de/vd18")
 
 printed_data = []
 printed_years = []
@@ -23,10 +24,52 @@ max_year = -1
 
 FORMAT = "jsmf-json"
 
+
+def vdn_query(vd18_nr):
+    return "pica.vdn={0}".format(vd18_nr)
+
+
+def get_ppn(vd18_nr, bbg="O"):
+    items = vd18_sru.search(vdn_query(vd18_nr), schema="picaxml", records=5)
+    if type(items) == list:
+        for item in items:
+            bbg_val = extract_bbg(item)
+            if bbg_val.startswith(bbg):
+                item_ppn = extract_ppn(item)
+                if item_ppn != "":
+                    return item_ppn
+    else:
+        bbg_val = extract_bbg(items)
+        if bbg_val.startswith(bbg):
+            item_ppn = extract_ppn(items)
+            if item_ppn != "":
+                return item_ppn
+    return None
+
+
+def extract_bbg(item):
+    bbg_val = item.find(".//datafield[@tag='002@']/subfield[@code='0']",
+                        namespaces=item.nsmap)
+    if bbg_val is not None:
+        if bbg_val.text is not None:
+            return bbg_val.text
+    return ""
+
+
+def extract_ppn(item):
+    ppn_val = item.find(".//datafield[@tag='003@']/subfield[@code='0']",
+                        namespaces=item.nsmap)
+    if ppn_val is not None:
+        if ppn_val.text is not None:
+            return ppn_val.text
+    return ""
+
+
 for year in online:
-    for ppn in online[year]:
-        if ppn is not None:
+    for vd18_nr in online[year]:
+        if vd18_nr is not None:
             counter += 1
+            ppn = get_ppn(vd18_nr)
             item_data = vd18.request(ppn, FORMAT)
             printed_data.append(item_data)
             item_title = "!NO DATA!"