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
*/
	public Double getDouble( IBaseExpression dataExpr ) throws BirtException
	{
		return DataTypeUtil.toDouble( getValue( dataExpr ) );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getString(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */
	public String getString( IBaseExpression dataExpr ) throws BirtException
	{
		return DataTypeUtil.toString( getValue( dataExpr ) );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getBigDecimal(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */
	public BigDecimal getBigDecimal( IBaseExpression dataExpr )
			throws BirtException
	{
		return DataTypeUtil.toBigDecimal( getValue( dataExpr ) );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getDate(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */
	public Date getDate( IBaseExpression dataExpr ) throws BirtException
	{
		return DataTypeUtil.toDate( getValue( dataExpr ) );
	}
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getBlob(org.eclipse.birt.data.engine.api.IBaseExpression)
	 */