X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fapi%2FDBRefEntryI.java;h=701acb663ce60ad3b3e5fe30fa5d437f5b40a210;hb=168ef5a045478ef56a5d9f8c71fbddb53a6b8a58;hp=32245b3354c03d9e1ddb3c65914b95c780f698a7;hpb=4d74e766d77156f71533564b32006a06df8f01bd;p=jalview.git

diff --git a/src/jalview/api/DBRefEntryI.java b/src/jalview/api/DBRefEntryI.java
index 32245b3..701acb6 100644
--- a/src/jalview/api/DBRefEntryI.java
+++ b/src/jalview/api/DBRefEntryI.java
@@ -70,4 +70,28 @@ public interface DBRefEntryI
    * @return
    */
   public boolean updateFrom(DBRefEntryI otherEntry);
+
+  /**
+   * Method to distinguish between direct and indirect database references
+   * 
+   * primary references indicate the local sequence data directly corresponds
+   * with the database record. All other references are secondary. direct
+   * references indicate that part or all of the local sequence data can be
+   * mapped with another sequence, enabling annotation transfer.
+   * cross-references indicate the local sequence data can be corresponded to
+   * some other linear coordinate system via a transformation.
+   * 
+   * This method is also sufficient to distinguish direct DBRefEntry mappings
+   * from other relationships - e.g. coding relationships (imply a 1:3/3:1
+   * mapping), but not transcript relationships, which imply a (possibly
+   * non-contiguous) 1:1 mapping
+   * 
+   * The only way a dbref's mappings can be fully verified is via the local
+   * sequence frame, so rather than use isPrimary directly, please use
+   * SequenceI.getPrimaryDbRefs()
+   *
+   * @return true if this reference provides a primary accession for the
+   *         associated sequence object
+   */
+  public boolean isPrimary();
 }