X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fws%2Fseqfetcher%2FASequenceFetcher.java;h=7d2097afd1668b934c1f9c55d32694e2b680b1e9;hb=2de8acfae59aced665e4c37ad0f7dcc2ed68818e;hp=8a8cf445571aba433882a710202331bc03c8cf63;hpb=506d60f0e188723ddc91c26824b41ac7034df3fe;p=jalview.git

diff --git a/src/jalview/ws/seqfetcher/ASequenceFetcher.java b/src/jalview/ws/seqfetcher/ASequenceFetcher.java
index 8a8cf44..7d2097a 100644
--- a/src/jalview/ws/seqfetcher/ASequenceFetcher.java
+++ b/src/jalview/ws/seqfetcher/ASequenceFetcher.java
@@ -1,6 +1,6 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.4)
- * Copyright (C) 2008 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Development Version 2.4.1)
+ * Copyright (C) 2009 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
  * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -297,4 +297,37 @@ public class ASequenceFetcher
     return false;
   }
 
+  /**
+   * select sources which are implemented by instances of the given class
+   * @param class that implements DbSourceProxy
+   * @return null or vector of source names for fetchers
+   */
+  public String[] getDbInstances(Class class1)
+  {
+    if (!jalview.ws.seqfetcher.DbSourceProxy.class.isAssignableFrom(class1))
+    {
+      throw new Error("Implmentation Error - getDbInstances must be given a class that implements jalview.ws.seqfetcher.DbSourceProxy (was given '"+class1+"')");
+    }
+    if (FETCHABLEDBS==null)
+    {
+      return null;
+    }
+    String[] sources = null;
+    Vector src = new Vector();
+    Enumeration dbs = FETCHABLEDBS.keys();
+    while (dbs.hasMoreElements())
+    {
+      String dbn = (String) dbs.nextElement();
+      DbSourceProxy dbp = (DbSourceProxy) FETCHABLEDBS.get(dbn);
+      if (class1.isAssignableFrom(dbp.getClass()))
+      {
+        src.addElement(dbn);
+      }
+    }
+    if (src.size()>0)
+    {
+      src.copyInto(sources = new String[src.size()]);
+    }
+    return sources;
+  }
 }