Fail a sortspec of zero keys.

diff --git a/src/org/z3950/zing/cql/CQLParser.java b/src/org/z3950/zing/cql/CQLParser.java
index f622bbb..9ccb139 100644 (file)
--- a/src/org/z3950/zing/cql/CQLParser.java
+++ b/src/org/z3950/zing/cql/CQLParser.java
@@ -1,4 +1,4 @@
-// $Id: CQLParser.java,v 1.37 2007-07-03 13:34:30 mike Exp $
+// $Id: CQLParser.java,v 1.38 2007-07-03 16:40:41 mike Exp $
 
 package org.z3950.zing.cql;
 import java.io.IOException;
@@ -12,7 +12,7 @@ import java.io.FileNotFoundException;
 /**
  * Compiles CQL strings into parse trees of CQLNode subtypes.
  *
- * @version    $Id: CQLParser.java,v 1.37 2007-07-03 13:34:30 mike Exp $
+ * @version    $Id: CQLParser.java,v 1.38 2007-07-03 16:40:41 mike Exp $
  * @see                <A href="http://zing.z3950.org/cql/index.html"
  *                     >http://zing.z3950.org/cql/index.html</A>
  */
@@ -105,6 +105,11 @@ public class CQLParser {
                ModifierSet ms = gatherModifiers(sortindex);
                sortnode.addSortIndex(ms);
            }
+
+           if (sortnode.keys.size() == 0) {
+               throw new CQLParseException("no sort keys");
+           }
+
            node = sortnode;
        }