Bug 179674 Support time dimension in model
When define time dimension in model, the "itTime" property will be set. However this is not enough. We also need to know to what precision the time value should be evaluated, say, year, month, day, etc. Model needs to be enhanced to support such requirement.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/elements/DesignChoiceConstants.java
public static final String CHOICE_LINE_ORIENTATION = "lineOrientation"; 
	public static final String LINE_ORIENTATION_HORIZONTAL = "horizontal"; 
	public static final String LINE_ORIENTATION_VERTICAL = "vertical"; 
	
	public static final String CHOICE_SECTION_ALIGN = "sectionAlign"; 
	public static final String SECTION_ALIGN_LEFT = "left"; 
	public static final String SECTION_ALIGN_CENTER = "center"; 
	public static final String SECTION_ALIGN_RIGHT = "right"; 
	
	public static final String CHOICE_DROP_TYPE = "dropType"; 
	public static final String DROP_TYPE_NONE = "none"; 
	public static final String DROP_TYPE_DETAIL = "detail"; 
	public static final String DROP_TYPE_ALL = "all"; 
	
	public static final String CHOICE_IMAGE_TYPE = "imageType"; 
	public static final String IMAGE_TYPE_IMAGE_BMP = "image/bmp"; 
	public static final String IMAGE_TYPE_IMAGE_GIF = "image/gif"; 
	public static final String IMAGE_TYPE_IMAGE_PNG = "image/png"; 
	public static final String IMAGE_TYPE_IMAGE_X_PNG = "image/x-png"; 
	public static final String IMAGE_TYPE_IMAGE_JPEG = "image/jpeg"; 
	
	public static final String CHOICE_LINE_SPACING = "lineSpacing"; 
	public static final String LINE_SPACING_LINES = "lines"; 
	public static final String LINE_SPACING_EXACT = "exact"; 
	
	public static final String CHOICE_ACTION_LINK_TYPE = "actionLinkType"; 
	public static final String ACTION_LINK_TYPE_NONE = "none"; 
	public static final String ACTION_LINK_TYPE_HYPERLINK = "hyperlink"; 
	public static final String ACTION_LINK_TYPE_DRILL_THROUGH = "drill-through"; 
	public static final String ACTION_LINK_TYPE_BOOKMARK_LINK = "bookmark-link";