X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fio%2FStructureFile.java;h=084f8869e5a85e6468bdef9ec61574ef8e7db6fc;hb=51b0b157926ed477cb558ca5971126bf9fccbd31;hp=40bb8bee96a75f0317f1001c0317e999a469e3c5;hpb=3d0101179759ef157b088ea135423cd909512d9f;p=jalview.git

diff --git a/src/jalview/io/StructureFile.java b/src/jalview/io/StructureFile.java
index 40bb8be..084f886 100644
--- a/src/jalview/io/StructureFile.java
+++ b/src/jalview/io/StructureFile.java
@@ -38,7 +38,7 @@ import java.lang.reflect.Constructor;
 import java.util.List;
 import java.util.Vector;
 
-import MCview.PDBChain;
+import mc_view.PDBChain;
 
 public abstract class StructureFile extends AlignFile
 {
@@ -68,7 +68,7 @@ public abstract class StructureFile extends AlignFile
 
   private boolean pdbIdAvailable;
 
-  public StructureFile(String inFile, DataSourceType sourceType)
+  public StructureFile(Object inFile, DataSourceType sourceType)
           throws IOException
   {
     super(inFile, sourceType);
@@ -98,7 +98,7 @@ public abstract class StructureFile extends AlignFile
 
   }
 
-  public StructureFile(boolean parseImmediately, String dataObject,
+  public StructureFile(boolean parseImmediately, Object dataObject,
           DataSourceType sourceType) throws IOException
   {
     super(parseImmediately, dataObject, sourceType);
@@ -341,8 +341,15 @@ public abstract class StructureFile extends AlignFile
     }
     StructureImportSettings.setShowSeqFeatures(true);
   }
-
-  public PDBChain findChain(String id) throws Exception
+  
+  /**
+   * Answers the first PDBChain found matching the given id, or null if none 
+   * is found
+   * 
+   * @param id
+   * @return
+   */
+  public PDBChain findChain(String id)
   {
     for (PDBChain chain : getChains())
     {
@@ -351,7 +358,7 @@ public abstract class StructureFile extends AlignFile
         return chain;
       }
     }
-    throw new Exception("PDB chain not Found!");
+    return null;
   }
 
   public void makeResidueList()
@@ -397,8 +404,10 @@ public abstract class StructureFile extends AlignFile
 
   public static boolean isRNA(SequenceI seq)
   {
-    for (char c : seq.getSequence())
+    int length = seq.getLength();
+    for (int i = 0; i < length; i++)
     {
+      char c = seq.getCharAt(i);
       if ((c != 'A') && (c != 'C') && (c != 'G') && (c != 'U'))
       {
         return false;