Add classes for visitor traversal

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

diff --git a/src/main/java/org/z3950/zing/cql/CQLTermNode.java b/src/main/java/org/z3950/zing/cql/CQLTermNode.java
index a6e1772..2ad9188 100644 (file)
--- a/src/main/java/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/main/java/org/z3950/zing/cql/CQLTermNode.java
@@ -42,6 +42,13 @@ public class CQLTermNode extends CQLNode {
     }
 
     @Override
+    public void traverse(CQLNodeVisitor visitor) {
+      //we visit relation first to allow filtering on relation type in the visitor
+      relation.traverse(visitor);
+      visitor.onTermNode(this);
+    }
+        
+    @Override
     public String getResultSetName() {
        if (isResultSetIndex(index))
            return term;