Bug 181888 Convert org.eclipse.birt.chart.viewer to a plug-in
Now the builders of org.eclipse.birt.chart.viewer project only include Java builder and Faceted project validation builder. Need to add Plug-in manifest builder to let this project use OSGI framework.
chart/org.eclipse.birt.chart.viewer/src/org/eclipse/birt/chart/viewer/sample/SampleHelper.java
* Utility for sample viewer
 */
public class SampleHelper
{
	static final class SampleDataRowEvaluator
			implements
				IDataRowExpressionEvaluator
	{
		private int k = 0;
		private Object[] column;
		private Map map;
		public SampleDataRowEvaluator( String[] set, Object[][] data )
		{
			if ( set == null )
			{
				throw new IllegalArgumentException( );
			}
			map = new HashMap( );
			for ( int i = 0; i < set.length; i++ )
			{
				map.put( set[i], data[i] );
			}
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.chart.factory.IDataRowExpressionEvaluator#evaluate(java.lang.String)
		 */
		public Object evaluate( String expression )
		{