Bug 204090 render a small rptdocument to PDF will be OutofMemory
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/util/TableProcessor.java
{
		protected Element element;
		protected Map cssStyles;
		protected IContent parent, inlineParent, content;
		protected ActionContent action;
		public State( Element element, Map cssStyles,
				IContent parent, IContent inlineParent, ActionContent action )
		{
			this.element = element;
			this.cssStyles = cssStyles;
			this.parent = parent;
			this.inlineParent = inlineParent;
			this.action = action;
		}
		public IContent getContent( )
		{
			return content;
		}
	}
	public static class TableState extends State