Bugfixes for decomiling underspecified terms

Thanks to Rudie Ekkelenkamp <r.ekkelenkamp@kennisnet.org>

diff --git a/src/org/z3950/zing/cql/CQLTermNode.java b/src/org/z3950/zing/cql/CQLTermNode.java
index aba0b48..a519215 100644 (file)
--- a/src/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/org/z3950/zing/cql/CQLTermNode.java
@@ -1,4 +1,4 @@
-// $Id: CQLTermNode.java,v 1.21 2003-07-29 22:53:02 mike Exp $
+// $Id: CQLTermNode.java,v 1.22 2006-06-14 14:36:36 mike Exp $
 
 package org.z3950.zing.cql;
 import java.util.Properties;
@@ -12,7 +12,7 @@ import java.util.Vector;
  * these must be provided - you can't have a qualifier without a
  * relation or vice versa.
  *
- * @version    $Id: CQLTermNode.java,v 1.21 2003-07-29 22:53:02 mike Exp $
+ * @version    $Id: CQLTermNode.java,v 1.22 2006-06-14 14:36:36 mike Exp $
  */
 public class CQLTermNode extends CQLNode {
     private String qualifier;
@@ -61,7 +61,8 @@ public class CQLTermNode extends CQLNode {
        String quotedTerm = maybeQuote(term);
        String res = quotedTerm;
 
-       if (!qualifier.equalsIgnoreCase("srw.serverChoice")) {
+       if (qualifier != null &&
+           !qualifier.equalsIgnoreCase("srw.serverChoice")) {
            // ### We don't always need spaces around `relation'.
            res = quotedQualifier + " " + relation.toCQL() + " " + quotedTerm;
        }
@@ -172,6 +173,9 @@ public class CQLTermNode extends CQLNode {
     }
 
     static String maybeQuote(String str) {
+       if (str == null)
+          return null;
+
        // There _must_ be a better way to make this test ...
        if (str.length() == 0 ||
            str.indexOf('"') != -1 ||