X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fws%2Fdbsources%2FUniprot.java;h=371eb50bc227365a4e74ae147aa73ea94a0d6261;hb=2123f8ad0cc51b9f58d5d2820fa54ed03a8f3b22;hp=a80a5301807546e19dbafe28dfec68a594f93d17;hpb=9d2408483e451285fd555c3cd6e0273977acbaa7;p=jalview.git

diff --git a/src/jalview/ws/dbsources/Uniprot.java b/src/jalview/ws/dbsources/Uniprot.java
index a80a530..371eb50 100644
--- a/src/jalview/ws/dbsources/Uniprot.java
+++ b/src/jalview/ws/dbsources/Uniprot.java
@@ -34,7 +34,6 @@ import jalview.datamodel.SequenceI;
 import jalview.schemes.ResidueProperties;
 import jalview.util.StringUtils;
 import jalview.ws.seqfetcher.DbSourceProxyImpl;
-import jalview.xml.binding.embl.ROOT;
 import jalview.xml.binding.uniprot.DbReferenceType;
 import jalview.xml.binding.uniprot.Entry;
 import jalview.xml.binding.uniprot.FeatureType;
@@ -43,8 +42,8 @@ import jalview.xml.binding.uniprot.PositionType;
 import jalview.xml.binding.uniprot.PropertyType;
 
 import java.io.InputStream;
+import java.net.HttpURLConnection;
 import java.net.URL;
-import java.net.URLConnection;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Vector;
@@ -145,25 +144,30 @@ public class Uniprot extends DbSourceProxyImpl
               "(UNIPROT\\|?|UNIPROT_|UNIREF\\d+_|UNIREF\\d+\\|?)", "");
       AlignmentI al = null;
 
-      String downloadstring = getDomain() + "/uniprot/" + queries
-              + ".xml";
+      String downloadstring = getDomain() + "/uniprot/" + queries + ".xml";
 
       URL url = new URL(downloadstring);
-      URLConnection urlconn = url.openConnection();
-      InputStream istr = urlconn.getInputStream();
-      List<Entry> entries = getUniprotEntries(istr);
-      if (entries != null)
+      HttpURLConnection urlconn = (HttpURLConnection) url.openConnection();
+      // anything other than 200 means we don't have data
+      // TODO: JAL-3882 reuse the EnsemblRestClient's fair
+      // use/backoff logic to retry when the server tells us to go away
+      if (urlconn.getResponseCode() == 200)
       {
-        List<SequenceI> seqs = new ArrayList<>();
-        for (Entry entry : entries)
+        InputStream istr = urlconn.getInputStream();
+        List<Entry> entries = getUniprotEntries(istr);
+        if (entries != null)
         {
-          seqs.add(uniprotEntryToSequence(entry));
+          List<SequenceI> seqs = new ArrayList<>();
+          for (Entry entry : entries)
+          {
+            seqs.add(uniprotEntryToSequence(entry));
+          }
+          al = new Alignment(seqs.toArray(new SequenceI[seqs.size()]));
         }
-        al = new Alignment(seqs.toArray(new SequenceI[seqs.size()]));
       }
-
       stopQuery();
       return al;
+
     } catch (Exception e)
     {
       throw (e);
@@ -188,8 +192,7 @@ public class Uniprot extends DbSourceProxyImpl
     String seqString = entry.getSequence().getValue().replaceAll("\\s*",
             "");
 
-    SequenceI sequence = new Sequence(id,
-            seqString);
+    SequenceI sequence = new Sequence(id, seqString);
     sequence.setDescription(getUniprotEntryDescription(entry));
 
     /*
@@ -197,12 +200,12 @@ public class Uniprot extends DbSourceProxyImpl
      */
     final String dbVersion = getDbVersion();
     List<DBRefEntry> dbRefs = new ArrayList<>();
-    boolean canonical=true;
+    boolean canonical = true;
     for (String accessionId : entry.getAccession())
     {
       DBRefEntry dbRef = new DBRefEntry(DBRefSource.UNIPROT, dbVersion,
-              accessionId,null,canonical);
-      canonical=false;
+              accessionId, null, canonical);
+      canonical = false;
       dbRefs.add(dbRef);
     }
 
@@ -507,10 +510,12 @@ public class Uniprot extends DbSourceProxyImpl
       XMLStreamReader streamReader = XMLInputFactory.newInstance()
               .createXMLStreamReader(is);
       javax.xml.bind.Unmarshaller um = jc.createUnmarshaller();
-      JAXBElement<jalview.xml.binding.uniprot.Uniprot> uniprotElement = 
-    		  um.unmarshal(streamReader, jalview.xml.binding.uniprot.Uniprot.class);
-      jalview.xml.binding.uniprot.Uniprot uniprot = uniprotElement.getValue();
-      
+      JAXBElement<jalview.xml.binding.uniprot.Uniprot> uniprotElement = um
+              .unmarshal(streamReader,
+                      jalview.xml.binding.uniprot.Uniprot.class);
+      jalview.xml.binding.uniprot.Uniprot uniprot = uniprotElement
+              .getValue();
+
       if (uniprot != null && !uniprot.getEntry().isEmpty())
       {
         entries = uniprot.getEntry();
@@ -518,6 +523,14 @@ public class Uniprot extends DbSourceProxyImpl
     } catch (JAXBException | XMLStreamException
             | FactoryConfigurationError e)
     {
+      if (e instanceof javax.xml.bind.UnmarshalException
+              && e.getCause() != null
+              && e.getCause() instanceof XMLStreamException
+              && e.getCause().getMessage().contains("[row,col]:[1,1]"))
+      {
+        // trying to parse an empty stream
+        return null;
+      }
       e.printStackTrace();
     }
     return entries;