Bug 177691 Support Date/Time type in BIRT.
We plan to support Date/Time type in BIRT. Please refer to attached document/patch file for necessary info.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/ParameterValidationUtil.java
* </ul>
	 * 
	 * @param dataType
	 *  		the data type of the input value
	 * @param format
	 *  		the format pattern to validate
	 * @param value
	 *  		the input value to validate
	 * @param locale
	 *  		the locale information
	 * @return the formatted string
	 */
	static public String getDisplayValue( String dataType, String format,
			Object value, ULocale locale )
	{
		if ( value == null )
			return null;
		format = StringUtil.trimString( format );
		if ( DesignChoiceConstants.PARAM_TYPE_DATETIME
				.equalsIgnoreCase( dataType )
				|| value instanceof Date )
		{
			DateFormatter formatter = new DateFormatter( locale );
			formatter.applyPattern( format );
			return formatter.format( (Date) value );
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_FLOAT
				.equalsIgnoreCase( dataType )
				|| value instanceof Float || value instanceof Double )
		{