Bug 124597 Error message pop up which from length of JS-Expression is error
Details: Error message pop up which from length of JS-Expression is error Setp: 1.New a datasource and dataset contain "row["First"]" 2.Insert a table in layout and a data in details 3.Input "row["FIRST"].length" in data expression 4.Preview Actual result: "FIRST" is a error input words, but it can preview some words in table: org.eclipse.birt.data.engine.script.DataExceptionMocker@1502283 But it has not pop up some error message. Expection result: Pop up an error message
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
private void checkStarted( ) throws DataException
	{
		if ( state == NOT_STARTED || state == CLOSED )
		{
			DataException e = new DataException( ResourceConstants.RESULT_CLOSED );
			logger.logp( Level.FINE,
					ResultIterator.class.getName( ),
					"checkStarted",
					"ResultIterator has been closed.",
					e );
			throw e;
		}
	}
	
	/*
	 * Returns the QueryResults of this result iterator. A convenience method
	 * for the API consumer.
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getQueryResults()
	 */
	public IQueryResults getQueryResults( )
	{
		return queryResults;
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#next()
	 */
	public boolean next( ) throws BirtException
	{