Bug 182062 Define and provide Date/Time format value
DateTime type has been supported in BIRT. Now, there's a proposal on support Date/Time type in BIRT Report Designer. In order to enable end user setting the format of Date/Time type, please define and provide format value for both Date and Time.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
{
		writer.startElement( DesignSchemaConstants.PARAMETER_GROUP_TAG );
		super.visitParameterGroup( obj );
		property( obj, IParameterGroupModel.START_EXPANDED_PROP );
		resourceKey( obj, IParameterGroupModel.HELP_TEXT_KEY_PROP,
				IParameterGroupModel.HELP_TEXT_PROP );
		writeContents( obj, IParameterGroupModel.PARAMETERS_SLOT,
				DesignSchemaConstants.PARAMETERS_TAG );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitCascadingParameterGroup(org.eclipse.birt.report.model.elements.CascadingParameterGroup)
	 */
	public void visitCascadingParameterGroup( CascadingParameterGroup obj )
	{
		writer
				.startElement( DesignSchemaConstants.CASCADING_PARAMETER_GROUP_TAG );
		super.visitParameterGroup( obj );
		property( obj, IParameterGroupModel.START_EXPANDED_PROP );
		resourceKey( obj, IParameterGroupModel.HELP_TEXT_KEY_PROP,
				IParameterGroupModel.HELP_TEXT_PROP );
		property( obj, ICascadingParameterGroupModel.DATA_SET_PROP );
		property( obj, ICascadingParameterGroupModel.PROMPT_TEXT_PROP );
		property( obj, ICascadingParameterGroupModel.DATA_SET_MODE_PROP );
		writeContents( obj, IParameterGroupModel.PARAMETERS_SLOT,
				DesignSchemaConstants.PARAMETERS_TAG );
		writeOverridenPropertyValues( obj );
		writer.endElement( );