enables gmx:anchor for otherconstraints

improves #839

Author: pvgenuchten

owslib/iso.py

@@ -494,6 +494,15 @@ def __init__(self, md=None, identtype=None):
                 val = util.testXMLValue(i)
                 if val is not None:
                     self.otherconstraints.append(val)
+            for i in md.findall(util.nspath_eval(
+                    'gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gmx:Anchor',
+                    namespaces)):
+                val = util.testXMLAttribute(i, util.nspath('href', namespaces["xlink"]))
+                if val is None:
+                    val = util.testXMLValue(i)
+                if val is not None:
+                    self.otherconstraints.append(val)    
+                    
 
             self.securityconstraints = []
             for i in md.findall(util.nspath_eval(

tests/resources/csw_dov_getrecordbyid.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <csw:GetRecordByIdResponse xmlns:csw="http://www.opengis.net/cat/csw/2.0.2">
-  <gmd:MD_Metadata xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gml="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:geonet="http://www.fao.org/geonetwork" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmd/gmd.xsd">
+  <gmd:MD_Metadata xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gmx="http://www.isotc211.org/2005/gmx"  xmlns:gml="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:geonet="http://www.fao.org/geonetwork" xsi:schemaLocation="http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmd/gmd.xsd">
     <gmd:fileIdentifier>
       <gco:CharacterString>6c39d716-aecc-4fbc-bac8-4f05a49a78d5</gco:CharacterString>
     </gmd:fileIdentifier>
@@ -470,6 +470,9 @@
             <gmd:otherConstraints>
               <gco:CharacterString>Data beschikbaar voor hergebruik volgens de Modellicentie Gratis Hergebruik. Toelichting beschikbaar op https://www.dov.vlaanderen.be/page/gebruiksvoorwaarden-dov-services</gco:CharacterString>
             </gmd:otherConstraints>
+            <gmd:otherConstraints>
+              <gmx:Anchor xlink:href="https://inspire.ec.europa.eu/metadata-codelist/ConditionsApplyingToAccessAndUse/noConditionsApply">Geen beperkingen</gmx:Anchor>
+            </gmd:otherConstraints>
           </gmd:MD_LegalConstraints>
         </gmd:resourceConstraints>
         <gmd:resourceConstraints>
@@ -841,4 +844,3 @@
     </gmd:dataQualityInfo>
   </gmd:MD_Metadata>
 </csw:GetRecordByIdResponse>
-

tests/test_iso_parsing.py

@@ -137,7 +137,9 @@ def test_md_parsing_dov():
 
     assert_list(iden.classification, 0)
 
-    assert_list(iden.otherconstraints, 1)
+    assert_list(iden.otherconstraints, 2)
+    assert iden.otherconstraints[
+               1] == "https://inspire.ec.europa.eu/metadata-codelist/ConditionsApplyingToAccessAndUse/noConditionsApply"
     assert iden.otherconstraints[
                0] == "Data beschikbaar voor hergebruik volgens de " \
                      "Modellicentie Gratis Hergebruik. Toelichting " \