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
if ( fmt == null )
		{
			fmt = new DateFormatter( value, locale );
			dateFormatters.put( value, fmt );
		}
		return fmt;
	}
	/**
	 * set the executor used in the execution context
	 * 
	 * @param executor
	 */
	public void setExecutor( ReportExecutor executor )
	{
		this.executor = executor;
	}
	/**
	 * get the executor used to execute the report
	 * 
	 * @return report executor
	 */
	public ReportExecutor getExecutor( )
	{
		return executor;
	}
	public TOCBuilder getTOCBuilder( )
	{
		return tocBuilder;
	}
	public void setTOCBuilder( TOCBuilder builder )