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
*            factory mode
	 */
	public void setFactoryMode( boolean mode )
	{
		this.factoryMode = mode;
	}
	/**
	 * set in presentation mode
	 * 
	 * @param mode
	 *            presentation mode
	 */
	public void setPresentationMode( boolean mode )
	{
		this.presentationMode = mode;
	}
	/**
	 * get a string formatter object
	 * 
	 * @param value
	 *            string format
	 * @return formatter object
	 */
	public StringFormatter getStringFormatter( String value )
	{
		StringFormatter fmt = (StringFormatter) stringFormatters.get( value );
		if ( fmt == null )
		{
			fmt = new StringFormatter( value, locale );
			stringFormatters.put( value, fmt );