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
{
	/**
	 * An internally maintained list containing all rows of raw resultset data
	 */
	final List rawResultSet;
	/**
	 * An internally maintained list containing all working resultset data
	 */
	final List workingResultSet;
	/**
	 * The column expressions associated with the resultset
	 */
	final String[] saExpressionKeys;
	/**
	 * The data types associated with each column in the resultset
	 */
	final int[] iaDataTypes;
	/**
	 * The group breaks associated with all rows of data
	 */
	private int[] iaGroupBreaks = null;
	/**
	 * A lookup table internally used to locate a numeric column index using the
	 * associated expression
	 */
	private final Hashtable htLookup;
	/**
	 * Indicates whether base series grouping was applied on the resultset to
	 * prevent duplicate grouping.