From 3176eb654a388bda2eefced0debd6cf698fe5092 Mon Sep 17 00:00:00 2001
From: Erik Brakkee <erik@brakkee.org>
Date: Sat, 31 Jul 2010 14:26:29 +0000
Subject: [PATCH]

---
 .../wamblee/reflection/ObjectTraversal.java   | 24 +++++++++++++++++++
 .../reflection/ObjectTraversalTest.java       |  7 ++++++
 2 files changed, 31 insertions(+)

diff --git a/support/general/src/main/java/org/wamblee/reflection/ObjectTraversal.java b/support/general/src/main/java/org/wamblee/reflection/ObjectTraversal.java
index d5955fc3..7b63729e 100644
--- a/support/general/src/main/java/org/wamblee/reflection/ObjectTraversal.java
+++ b/support/general/src/main/java/org/wamblee/reflection/ObjectTraversal.java
@@ -25,6 +25,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.Map.Entry;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.wamblee.general.ObjectElem;
 
@@ -47,6 +49,8 @@ import org.wamblee.general.ObjectElem;
  * @author Erik Brakkee
  */
 public class ObjectTraversal {
+    
+    public static final Logger LOGGER = Logger.getLogger(ObjectTraversal.class.getName());
 
     /**
      * Visitor interface to be implemented for object traversal.
@@ -128,6 +132,7 @@ public class ObjectTraversal {
         boolean visitArray(Object aArray);
     }
 
+    private int level;
     private ObjectVisitor visitor;
     private List<ObjectElem> excluded;
 
@@ -138,6 +143,7 @@ public class ObjectTraversal {
      *            Visitor to use.
      */
     public ObjectTraversal(ObjectVisitor aVisitor) {
+        level = 0;
         visitor = aVisitor;
         excluded = new ArrayList<ObjectElem>();
     }
@@ -151,6 +157,14 @@ public class ObjectTraversal {
     public void addExcludedObject(Object aObject) {
         excluded.add(new ObjectElem(aObject));
     }
+    
+    private String indent() { 
+        StringBuffer buf = new StringBuffer();
+        for (int i = 1; i < level; i++) { 
+            buf.append("    ");
+        }
+        return buf.toString();
+    }
 
     public void accept(Object aObject) {
         if (aObject == null) {
@@ -169,6 +183,10 @@ public class ObjectTraversal {
         if (alreadyProcessed(aObject)) {
             return;
         }
+        if ( LOGGER.isLoggable(Level.FINEST)) {
+            level++;
+            LOGGER.finest(indent() + "obj: " + aObject);
+        }
 
         if (aObject instanceof List) {
             if (visitor.visitList((List) aObject)) {
@@ -207,6 +225,9 @@ public class ObjectTraversal {
                 getter.getReturnType() != Void.class) {
 
                 if (visitor.mustVisit(getter)) {
+                    if ( LOGGER.isLoggable(Level.FINEST)) { 
+                        LOGGER.finest(indent() + "method:  " + getter.getName());
+                    }
                     acceptMethod(aObject, getter);
                 }
             }
@@ -219,6 +240,9 @@ public class ObjectTraversal {
             if (!Modifier.isStatic(modifiers) && !Modifier.isFinal(modifiers)) {
                 field.setAccessible(true);
                 if (visitor.mustVisit(field)) {
+                    if ( LOGGER.isLoggable(Level.FINEST)) { 
+                        LOGGER.finest(indent() + "field:  " + field.getName());
+                    }
                     acceptField(aObject, field);
                 }
             }
diff --git a/support/general/src/test/java/org/wamblee/reflection/ObjectTraversalTest.java b/support/general/src/test/java/org/wamblee/reflection/ObjectTraversalTest.java
index 8e00ca5a..a97c91f3 100644
--- a/support/general/src/test/java/org/wamblee/reflection/ObjectTraversalTest.java
+++ b/support/general/src/test/java/org/wamblee/reflection/ObjectTraversalTest.java
@@ -26,6 +26,9 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.apache.derby.impl.sql.execute.OnceResultSet;
 import org.junit.Before;
@@ -58,6 +61,10 @@ public class ObjectTraversalTest {
         when(visitor.visitMap(any(Map.class))).thenReturn(true);
         when(visitor.visitSet(any(Set.class))).thenReturn(true);
         
+        ObjectTraversal.LOGGER.setLevel(Level.FINEST);
+        ConsoleHandler handler = new ConsoleHandler();
+        handler.setLevel(Level.FINEST);
+        ObjectTraversal.LOGGER.addHandler(handler);
     }
     
     public static class X1 { 
-- 
2.31.1