Bug 184569 Time parameter format will affact other data item format.[0705]
Description: Time parameter format will affact other data item format. Build number:2.2.0.v20070428 Steps to reproduce: 1. New a report parameter, Time type. 2. Click Change to set format as hh:mm. 3. Drag the parameter to layout. 4. Insert a Data item, datetime type, input expression as "new Date()". 5. Preview and input 8:30 as value Expected result: Display time value and the second line display datetime value. Actual result: Both parameter and data item display time value. Error log:N/A
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
* 
	 * @param source
	 *            the expression to be evaluated
	 * @return the result if no error exists, otherwise null.
	 * 
	 * @see evaluate(String,String,int)
	 */
	public Object evaluate( String source )
	{
		return evaluate( source, "<inline>", 1 );
	}
	/**
	 * Evaluate a BIRT expression
	 * 
	 * @param expr
	 *            the expression to be evaluated
	 * @param name
	 *            the file name
	 * @param lineNo
	 *            the line number
	 * 
	 * @return the result if no error exists, otherwise null.
	 */
	public Object evaluate( String expr, String name, int lineNo )
	{
		if ( expr != null )
		{
			try
			{
				return scriptContext.eval( expr, name, lineNo );