✎ Using Calculated Values

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~~NOTRANS~~
~~Title: Using calculated values~~
Sometimes, it's useful to add calculated values to your report. To do this, simply use your own implementation of **ICalculatedValue**.

Here's an example:

<code java>
Bean bean = new Bean();
bean.put("AMOUNT", BigDecimal.valueOf(11.5));
bean.put("PRICE", BigDecimal.valueOf(15.44));
bean.put("CALCULATED", new ICalculatedValue() 
{
	@Override
	public Object getValue(String pName, INode pNode) 
	{
		return ((BigDecimal)pNode.get("AMOUNT")).multiply((BigDecimal)pNode.get("PRICE"));
	}
});

BeanNode node = new BeanNode(bean);

RtfWorker w = new RtfWorker();
w.loadDocument(getTemplateInputStream("calculatedValues.rtf"));
w.fillInData(node);
w.saveDocument(new FileOutputStream(getTempOutputFile("result_calculatedValues.rtf")));
</code>

If you're using an AbstractDataNode like **StorageNode**, **ListNode** or **EmptyNode**, be sure that you set the calculated value as parameter:

<code java>
dataNode.setParameter("CALCULATED", new ICalculatedValue() {...});
</code>