first commit

hrmsEjb/net/sf/jasperreports/engine/fill/JRDefaultNothingIncrementer.java

@@ -0,0 +1,25 @@
+package net.sf.jasperreports.engine.fill;
+
+class JRDefaultNothingIncrementer extends JRAbstractExtendedIncrementer {
+  private static JRDefaultNothingIncrementer mainInstance = new JRDefaultNothingIncrementer();
+  
+  public static JRDefaultNothingIncrementer getInstance() {
+    return mainInstance;
+  }
+  
+  public Object increment(JRCalculable variable, Object expressionValue, AbstractValueProvider valueProvider) {
+    return expressionValue;
+  }
+  
+  public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider) {
+    if (!calculableValue.isInitialized())
+      return calculableValue.getValue(); 
+    if (!calculable.isInitialized())
+      return calculable.getValue(); 
+    return null;
+  }
+  
+  public Object initialValue() {
+    return null;
+  }
+}