From: jprocter <Jim Procter>
Date: Fri, 16 Nov 2007 15:07:18 +0000 (+0000)
Subject: added generic method for adding new database proxies by reflection on instance.
X-Git-Tag: Release_2_4~183
X-Git-Url: http://source.jalview.org/gitweb/?p=jalview.git;a=commitdiff_plain;h=300c01c1363c3d0d0f92df3750a07314479ed7ca

added generic method for adding new database proxies by reflection on instance.
---

diff --git a/src/jalview/ws/seqfetcher/ASequenceFetcher.java b/src/jalview/ws/seqfetcher/ASequenceFetcher.java
index 7b455bf..9c2bfd4 100644
--- a/src/jalview/ws/seqfetcher/ASequenceFetcher.java
+++ b/src/jalview/ws/seqfetcher/ASequenceFetcher.java
@@ -201,4 +201,49 @@ public class ASequenceFetcher
     return dbs;
   }
 
+  /**
+   * constructs and instance of the proxy and registers it as a valid
+   * dbrefsource
+   * 
+   * @param dbSourceProxy
+   *                reference for class implementing
+   *                jalview.ws.seqfetcher.DbSourceProxy
+   * @throws java.lang.IllegalArgumentException
+   *                 if class does not implement
+   *                 jalview.ws.seqfetcher.DbSourceProxy
+   */
+  protected void addDBRefSourceImpl(Class dbSourceProxy)
+          throws java.lang.IllegalArgumentException
+  {
+    try
+    {
+      Object proxyObj = dbSourceProxy.getConstructor(
+              null).newInstance(null);
+      if (!DbSourceProxy.class.isInstance(proxyObj))
+      {
+        throw new IllegalArgumentException(
+                dbSourceProxy.toString()
+                        + " does not implement the jalview.ws.seqfetcher.DbSourceProxy");
+      }
+      DbSourceProxy proxy = (DbSourceProxy) proxyObj; 
+      if (proxy != null)
+      {
+        if (FETCHABLEDBS == null)
+        {
+          FETCHABLEDBS = new Hashtable();
+        }
+        FETCHABLEDBS.put(proxy.getDbSource(), proxy);
+      }
+    } 
+    catch (IllegalArgumentException e)
+    {
+      throw e;
+    }
+    catch (Exception e)
+    {
+      // Serious problems if this happens.
+      throw new Error("DBRefSource Implementation Exception", e);
+    }
+  }
+
 }
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