Bug 173836 NPE was thrown when click "Preview " button quickly twice[00]
NPE was thrown when click "Preview " button quickly twice[00] Build number: 2.2.0.v20070212-0630 Steps to reproduce: 1.open attached report 2.click "Preview" button quickly twice Expected result: Report can be previewed properly Actual result: NPE was thrown in second preview Error log: see screen shot
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/BaseAttributeBean.java
*/
	protected boolean isDesigner = false;
	/**
	 * Bookmark.
	 */
	protected String bookmark = null;
	/**
	 * Reportlet id.
	 */
	protected String reportletId = null;
	/**
	 * Report format of the request.
	 */
	protected String format = ParameterAccessor.PARAM_FORMAT_HTML;
	/**
	 * values from config file
	 */
	protected Map configMap = null;
	/**
	 * values from document file
	 */
	protected Map parameterMap = null;
	/**
	 * RTL option.
	 */
	protected boolean rtl = false;
	/**
	 * determin whether the link is a toc or bookmark
	 */
	protected boolean isToc = false;