Add classes for visitor traversal

[cql-java-moved-to-github.git] / src / main / java / org / z3950 / zing / cql / CQLRelation.java

diff --git a/src/main/java/org/z3950/zing/cql/CQLRelation.java b/src/main/java/org/z3950/zing/cql/CQLRelation.java
index 351d8d4..81fd38c 100644 (file)
--- a/src/main/java/org/z3950/zing/cql/CQLRelation.java
+++ b/src/main/java/org/z3950/zing/cql/CQLRelation.java
@@ -1,4 +1,3 @@
-// $Id: CQLRelation.java,v 1.19 2007-07-03 13:40:58 mike Exp $
 
 package org.z3950.zing.cql;
 import java.util.List;
@@ -7,7 +6,6 @@ import java.util.Properties;
 /**
  * Represents a relation between a CQL index and term.
  *
- * @version    $Id: CQLRelation.java,v 1.19 2007-07-03 13:40:58 mike Exp $
  */
 public class CQLRelation extends CQLNode {
     ModifierSet ms;
@@ -44,11 +42,16 @@ public class CQLRelation extends CQLNode {
     }
 
     @Override
+    public void traverse(CQLNodeVisitor visitor) {
+      visitor.onRelation(this);
+    } 
+    
+    @Override
     void toXCQLInternal(XCQLBuilder b, int level, List<CQLPrefix> prefixes,
       List<ModifierSet> sortkeys) {
        if (sortkeys != null)
            throw new Error("CQLRelation.toXCQL() called with sortkeys");
-       ms.toXCQLInternal(b, level, "relation");
+       ms.toXCQLInternal(b, level, "relation", "value");
     }
 
     @Override