Bug 124444 Preview attached file in pdf will display nothing.
Description: Preview attached file in pdf will display nothing. Steps to reproduce: 1. Preview attached design file in pdf Expected result: Report content shows Actual result: Wait for 10 minutes but nothing showed at all
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/DteDataEngine.java
{
	/**
	 * execution context
	 */
	protected ExecutionContext context;
	/**
	 * data engine
	 */
	protected DataEngine engine;
	/**
	 * Hashmap which map <code>ReportQuery</code> to
	 * <code>PreparedQuery</code>
	 */
	protected HashMap queryMap = new HashMap( );
	/**
	 * the logger
	 */
	protected static Logger logger = Logger.getLogger( DteDataEngine.class
			.getName( ) );
	/**
	 * resultset stack
	 */
	protected LinkedList rsStack = new LinkedList( );
	/**
	 * creates data engine, by first look into the directory specified by
	 * configuration variable odadriver, for oda configuration file. The oda
	 * configuration file is at $odadriver/drivers/driverType/odaconfig.xml.
	 * <p>
	 *