Bug 155660 [regression]DateTime parameter display incorrect value when set format
Description: DateTime parameter display incorrectly Steps to reproduce: 1.Add a DateTime parameter into the report 2.Set the default value as 03/12/2005 10:15:30 AM 3.Change the format to anyone without date (such as Short time or medium time) 4.preview Expected result: Display correctly(like 03/12/2005 10:15:30 AM ) Actual result: wrong display (like Jan 1, 1970 10:10 AM )
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
for ( Iterator iter = parameterList.iterator( ); iter.hasNext( ); )
		{
			ScalarParameterHandle parameter = null;
			Object parameterObj = iter.next( );
			if ( parameterObj instanceof ScalarParameterHandle )
			{
				parameter = (ScalarParameterHandle) parameterObj;
			}
			
			if ( parameter == null )
				continue;
			String paramName = parameter.getName( );
			Object paramValueObj = this.parametersAsString.get( paramName );
			if ( paramValueObj != null )
			{
				try
				{
					
					String format = ParameterAccessor.getFormat( request,
							paramName );
					if ( format == null || format.length( ) <= 0 )
					{
						format = parameter.getPattern( );
					}
					paramValueObj = DataUtil.validate(
							parameter.getDataType( ), format, paramValueObj
									.toString( ), locale );
					params.put( paramName, paramValueObj );
				}
				catch ( ValidationValueException e )