Bug 164764 Joint data set does not work properly using attached flatfile
The data set preview keep empty in joint data set. Step to reproduce: 1.Create two data sets based on attached flat file 2.Make an inner join using joint data set with key "A". 3.Preview data set in data set editor. Expect result: The data set preview correctly Actual result: The data set preview is empty.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/script/ScriptEvalUtil.java
{
		String exprText;
		Object value;
		/**
		 * 
		 * @param exprText
		 * @param value
		 * @return
		 */
		public static ExprTextAndValue newInstance( String exprText,
				Object value )
		{
			return new ExprTextAndValue( exprText, value );
		}
		/**
		 * 
		 * @param exprText
		 * @param value
		 */
		public ExprTextAndValue( String exprText, Object value )
		{
			this.exprText = exprText;
			this.value = value;
		}