Bug 150899 Cannot bind data values to chart series, which causes chart preview fail.
How to reproduce it? 1. Create a new chart, bind it with valid data set. 2. Assign the valid data values to category series and value series. Current result: 1. There is no chart live preview in chart builder. It still uses the default sample data. 2. Preview, dataset invalid exception is thrown out. Investigation: It is perhaps caused by ResultSetWrapper.java. There is no initializeMeta( ) in the Constructor.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/internal/datafeed/ResultSetWrapper.java
else
					{
						
						iGroupIndex = (int) Math.floor( Math.abs( dBaseReference
								/ iGroupingInterval ) );
					}
				}
				if ( !bFirst )
				{
					bGroupBreak = ( iLastGroupIndex != iGroupIndex );
				}
				if ( bGroupBreak || bFirst )
				{
					if ( oaSummarizedTuple != null ) 
					{
						for ( int i = 0; i < iOrthogonalSeriesCount; i++ )
						{
							oaSummarizedTuple[iaColumnIndexes[i]] = iafa[i].getAggregatedValue( );
							iafa[i].initialize( ); 
						}
						
						Number obj = (Number) oaTuple[iSortColumnIndex];
						baseReference = NumberDataElementImpl.create( obj == null ? 0
								: obj.doubleValue( ) );
						dBaseReference = baseReference.getValue( );
						iGroupIndex = 0;
					}
					else
					{