X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fext%2Fensembl%2FEnsemblLookup.java;h=0ddef2b999ef57de300f6c4f511414086bf61a66;hb=d7e95f458ebcbbdcc13f8b07357542ab2d7e4547;hp=92763a17cce27e4a571c4a6edaeb9ff68bdfd939;hpb=5363c7b5990f49e763d99f927a206e4ec6eea774;p=jalview.git

diff --git a/src/jalview/ext/ensembl/EnsemblLookup.java b/src/jalview/ext/ensembl/EnsemblLookup.java
index 92763a1..0ddef2b 100644
--- a/src/jalview/ext/ensembl/EnsemblLookup.java
+++ b/src/jalview/ext/ensembl/EnsemblLookup.java
@@ -41,6 +41,19 @@ import org.json.simple.parser.ParseException;
  */
 public class EnsemblLookup extends EnsemblRestClient
 {
+
+  private static final String OBJECT_TYPE_TRANSLATION = "Translation";
+  private static final String PARENT = "Parent";
+  private static final String OBJECT_TYPE_TRANSCRIPT = "Transcript";
+  private static final String ID = "id";
+  private static final String OBJECT_TYPE_GENE = "Gene";
+  private static final String OBJECT_TYPE = "object_type";
+
+  /**
+   * keep track of last identifier retrieved to break loops
+   */
+  private String lastId;
+
   /**
    * Default constructor (to use rest.ensembl.org)
    */
@@ -150,7 +163,18 @@ public class EnsemblLookup extends EnsemblRestClient
     BufferedReader br = null;
     try
     {
+
       URL url = getUrl(identifier, objectType);
+
+      if (identifier.equals(lastId))
+      {
+        System.err.println("** Ensembl lookup " + url.toString()
+                + " looping on Parent!");
+        return null;
+      }
+
+      lastId = identifier;
+
       if (url != null)
       {
         br = getHttpResponse(url, ids);