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 UNITS_PT = "pt"; 
	public static final String UNITS_PC = "pc"; 
	public static final String UNITS_EM = "em"; 
	public static final String UNITS_EX = "ex"; 
	public static final String UNITS_PX = "px"; 
	public static final String UNITS_PERCENTAGE = "%"; 
	
	public static final String CHOICE_PARAM_TYPE = "paramType"; 
	public static final String PARAM_TYPE_STRING = "string"; 
	public static final String PARAM_TYPE_FLOAT = "float"; 
	public static final String PARAM_TYPE_DECIMAL = "decimal"; 
	public static final String PARAM_TYPE_DATETIME = "dateTime"; 
	public static final String PARAM_TYPE_BOOLEAN = "boolean"; 
	public static final String PARAM_TYPE_INTEGER = "integer"; 
	public static final String PARAM_TYPE_ANY = "any"; 
	public static final String PARAM_TYPE_DATE = "date"; 
	public static final String PARAM_TYPE_TIME = "time"; 
	
	public static final String CHOICE_PARAM_VALUE_TYPE = "paramType"; 
	public static final String PARAM_VALUE_TYPE_STATIC = "static"; 
	public static final String PARAM_VALUE_TYPE_DYNAMIC = "dynamic"; 
	
	public static final String CHOICE_PARAM_CONTROL = "paramControl"; 
	public static final String PARAM_CONTROL_TEXT_BOX = "text-box"; 
	public static final String PARAM_CONTROL_LIST_BOX = "list-box"; 
	public static final String PARAM_CONTROL_RADIO_BUTTON = "radio-button"; 
	public static final String PARAM_CONTROL_CHECK_BOX = "check-box"; 
	
	public static final String CHOICE_TEXT_ALIGN = "textAlign"; 
	public static final String TEXT_ALIGN_LEFT = "left";