[Ejtools-cvs] CVS: libraries/common/src/main/net/sourceforge/ejtools/util Sort.java,1.1,1.2

[Laurent E. <let...@us...>]

Update of /cvsroot/ejtools/libraries/common/src/main/net/sourceforge/ejtools/util
In directory usw-pr-cvs1:/tmp/cvs-serv1672/libraries/common/src/main/net/sourceforge/ejtools/util

Modified Files:
	Sort.java 
Log Message:
Add sort method based on JavaBean property

Index: Sort.java
===================================================================
RCS file: /cvsroot/ejtools/libraries/common/src/main/net/sourceforge/ejtools/util/Sort.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -C2 -d -r1.1 -r1.2
*** Sort.java	19 Apr 2002 07:05:02 -0000	1.1
--- Sort.java	30 Apr 2002 21:02:50 -0000	1.2
***************
*** 7,10 ****
--- 7,12 ----
  package net.sourceforge.ejtools.util;
  
+ import java.beans.PropertyDescriptor;
+ import java.lang.reflect.Method;
  import java.util.Collections;
  import java.util.Comparator;
***************
*** 17,21 ****
   * @author     laurent
   * @created    24 décembre 2001
-  * @todo       Javadoc to complete
   */
  public abstract class Sort
--- 19,22 ----
***************
*** 38,41 ****
--- 39,118 ----
              v.addElement(obj);
           }
+       }
+ 
+       return v.iterator();
+    }
+ 
+ 
+    /**
+     *  Description of the Method
+     *
+     * @param  enum          Description of Parameter
+     * @param  bean          Description of Parameter
+     * @param  propertyName  Description of Parameter
+     * @return               Description of the Returned Value
+     */
+    public static Iterator sortByProperty(Iterator enum, Class bean, String propertyName)
+    {
+       Vector v = new Vector();
+       while (enum.hasNext())
+       {
+          v.addElement(enum.next());
+       }
+ 
+       try
+       {
+          final PropertyDescriptor pd = new PropertyDescriptor(propertyName, bean);
+          final Method m = pd.getReadMethod();
+ 
+          Collections.sort(v,
+             new Comparator()
+             {
+                public int compare(Object o1, Object o2)
+                {
+                   Comparable val1;
+                   Comparable val2;
+ 
+                   try
+                   {
+                      val1 = (Comparable) m.invoke(o1, new Object[0]);
+                      val2 = (Comparable) m.invoke(o2, new Object[0]);
+                   }
+                   catch (Exception e)
+                   {
+                      return 0;
+                   }
+ 
+                   if (val1 == null)
+                   {
+                      return -1;
+                   }
+                   if (val2 == null)
+                   {
+                      return 1;
+                   }
+ 
+                   try
+                   {
+                      return val1.compareTo(val2);
+                   }
+                   catch (Exception e)
+                   {
+                      // Ignore it
+                   }
+                   return 0;
+                }
+ 
+ 
+                public boolean equals(Object obj)
+                {
+                   return true;
+                   // Ever called?
+                }
+             });
+       }
+       catch (Exception e)
+       {
+          // Ignore it
        }