Bug 120345 Need a URL generator API from Engine
The Chart Engine needs the ability to generate a viewer URL from an ActionHandle, this can be provided by a Report Engine public API for instance. The URL should usable as is by the viewer without any additional change. The Chart Engine can take care of evaluating the expressions inside the ActionHandle before calling the Report Engine API if necessary.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
{
		return runnable;
	}
	/**
	 * @param runnable
	 *            The runnable to set.
	 */
	public void setRunnable( IReportRunnable runnable )
	{
		this.runnable = runnable;
		ReportDefinition designDefn = new ReportDefinition(
				(ReportDesignHandle) runnable.getDesignHandle( ) );
		scriptContext.registerBean( "design", designDefn );
	}
	/**
	 * @return Returns the renderOption.
	 */
	public IRenderOption getRenderOption( )
	{
		return renderOption;
	}
	/**
	 * @param renderOption
	 *            The renderOption to set.
	 */
	public void setRenderOption( IRenderOption renderOption )
	{
		this.renderOption = renderOption;
	}
	public class ElementExceptionInfo