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hrmsEjb/org/apache/commons/collections/comparators/ComparableComparator.java

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+package org.apache.commons.collections.comparators;
+
+import java.io.Serializable;
+import java.util.Comparator;
+
+public class ComparableComparator implements Comparator, Serializable {
+  private static final ComparableComparator instance = new ComparableComparator();
+  
+  private static final long serialVersionUID = -291439688585137865L;
+  
+  public int compare(Object paramObject1, Object paramObject2) {
+    if (paramObject1 == null || paramObject2 == null)
+      throw new ClassCastException("There were nulls in the arguments for this method: compare(" + paramObject1 + ", " + paramObject2 + ")"); 
+    if (paramObject1 instanceof Comparable) {
+      if (paramObject2 instanceof Comparable) {
+        int i = ((Comparable)paramObject1).compareTo(paramObject2);
+        int j = ((Comparable)paramObject2).compareTo(paramObject1);
+        if (i == 0 && j == 0)
+          return 0; 
+        if (i < 0 && j > 0)
+          return i; 
+        if (i > 0 && j < 0)
+          return i; 
+        throw new ClassCastException("o1 not comparable to o2");
+      } 
+      throw new ClassCastException("The first argument of this method was not a Comparable: " + paramObject2.getClass().getName());
+    } 
+    if (paramObject2 instanceof Comparable)
+      throw new ClassCastException("The second argument of this method was not a Comparable: " + paramObject1.getClass().getName()); 
+    throw new ClassCastException("Both arguments of this method were not Comparables: " + paramObject1.getClass().getName() + " and " + paramObject2.getClass().getName());
+  }
+  
+  public static ComparableComparator getInstance() {
+    return instance;
+  }
+}

hrmsEjb/org/apache/commons/collections/comparators/ReverseComparator.java

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+package org.apache.commons.collections.comparators;
+
+import java.io.Serializable;
+import java.util.Comparator;
+
+public class ReverseComparator implements Comparator, Serializable {
+  private Comparator comparator;
+  
+  public ReverseComparator() {
+    this(null);
+  }
+  
+  public ReverseComparator(Comparator paramComparator) {
+    if (paramComparator != null) {
+      this.comparator = paramComparator;
+    } else {
+      this.comparator = ComparableComparator.getInstance();
+    } 
+  }
+  
+  public int compare(Object paramObject1, Object paramObject2) {
+    return this.comparator.compare(paramObject2, paramObject1);
+  }
+}