Bug 122306 TOC on group won't be displayed
Description: TOC on group won't be displayed Steps to reproduce: 1.Add a sample datasource and a data with table "CUSTOMERS" 2.Add a table binding with data set 3.Add a group on the table and set the toc expression to "Group" 4.Preview in HTML Expected result: TOC "Group" will be displayed on the TOC pane Actual result: Nothing in the TOC pane
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/ReportQueryBuilder.java
protected LinkedList queryStack = new LinkedList( );
		/**
		 * the total number of queries created in this report
		 */
		protected int queryCount = 0;
		/**
		 * a collection of the expressions on the CURRENT query
		 */
		protected Collection expressions;
		/**
		 * the expression stack. This is a link list of collections, not a
		 * link-list of individual expressions.
		 */
		protected LinkedList expressionStack = new LinkedList( );
		/**
		 * entry point to the report
		 */
		protected Report report;
		/**
		 * the execution context
		 */
		protected ExecutionContext context;
		/**
		 * create report query definitions for this report.
		 * 
		 * @param report
		 *            entry point to the report
		 * @param context
		 *            the execution context
		 */