add registry.py from Nodesoftware - gonna need that soon

registry.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+
+routines for querying the registry
+
+"""
+
+REL_REG='http://registry.vamdc.eu/vamdc_registry/services/RegistryQueryv1_0'
+DEV_REG='http://casx019-zone1.ast.cam.ac.uk/registry/services/RegistryQueryv1_0'
+REGURL=DEV_REG
+WSDL=REGURL+'?wsdl'
+
+# this is a copy of the URL above but with
+# schema locations fixed:
+WSDL = 'http://tmy.se/t/devreg_wsdl.xml'
+
+from suds.client import Client
+from suds.xsd.doctor import Doctor
+class RegistryDoctor(Doctor):
+    TNS = 'http://www.ivoa.net/wsdl/RegistrySearch/v1.0'
+    def examine(self, node):
+        tns = node.get('targetNamespace')
+        # find a specific schema
+        if tns != self.TNS:
+            return
+        for e in node.getChildren('element'):
+            # find our response element
+            if e.get('name') != 'XQuerySearchResponse':
+                continue
+            # fix the <xs:any/> by adding maxOccurs
+            any = e.childAtPath('complexType/sequence/any')
+            any.set('maxOccurs', 'unbounded')
+            break
+
+
+def getNodeList():
+
+    d = RegistryDoctor()
+    client = Client(WSDL,doctor=d)
+
+    qr="""declare namespace ri='http://www.ivoa.net/xml/RegistryInterface/v1.0';
+for $x in //ri:Resource
+where $x/capability[@standardID='ivo://vamdc/std/VAMDC-TAP']
+and $x/@status='active'
+return ($x/title, $x/capability[@standardID='ivo://vamdc/std/VAMDC-TAP']/interface/accessURL)"""
+
+    v=client.service.XQuerySearch(qr)
+    nameurls=[]
+    while v:
+	nameurls.append({\
+			'name':v.pop(1),
+			'url':v.pop(0)['value'],
+			})
+    return nameurls
+
+
+
+if __name__ == '__main__':
+    print getNodeList()