svn commit: r592040 - /activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java

[js...@apache.org]

Author: jstrachan
Date: Mon Nov  5 07:20:11 2007
New Revision: 592040

URL: http://svn.apache.org/viewvc?rev=592040&view=rev
Log:
added a test case and fix for http://issues.apache.org/activemq/browse/CAMEL-206

Modified:
    activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java

Modified: activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java
URL: http://svn.apache.org/viewvc/activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java?rev=592040&r1=592039&r2=592040&view=diff
==============================================================================
--- activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java (original)
+++ activemq/camel/trunk/camel-core/src/main/java/org/apache/camel/util/CollectionHelper.java Mon Nov  5 07:20:11 2007
@@ -16,10 +16,14 @@
  */
 package org.apache.camel.util;
 
+import java.lang.reflect.Array;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.Map;
 
+import org.w3c.dom.NodeList;
+
 /**
  * A number of helper methods for working with collections
  * 
@@ -32,7 +36,35 @@
      */
     private CollectionHelper() {        
     }
-    
+
+    /**
+     * Returns the size of the collection if it can be determined to be a collection
+     */
+    public static Integer size(Object value) {
+        if (value != null) {
+            if (value instanceof Collection) {
+                Collection collection = (Collection) value;
+                return collection.size();
+            }
+            else if (value instanceof Map) {
+                Map map = (Map) value;
+                return map.size();
+            }
+            else if (value instanceof Object[]) {
+                Object[] array  = (Object[]) value;
+                return array.length;
+            }
+            else if (value.getClass().isArray()) {
+                return Array.getLength(value);
+            }
+            else if (value instanceof NodeList) {
+                NodeList nodeList = (NodeList) value;
+                return nodeList.getLength();
+            }
+        }
+        return null;
+    }
+
     /**
      * Sets the value of the entry in the map for the given key, though if the
      * map already contains a value for the given key then the value is appended