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/api/elements/DesignChoiceConstants.java
public static final String CHOICE_DATA_SET_MODE_TYPE = "dataSetMode"; 
	public static final String DATA_SET_MODE_SINGLE = "single"; 
	public static final String DATA_SET_MODE_MULTIPLE = "multiple"; 
	/**
	 * filterTarget -- filter target type.
	 */
	public static final String CHOICE_FILTER_TARGET = "filterTarget"; 
	public static final String FILTER_TARGET_DATA_SET = "DataSet"; 
	public static final String FILTER_TARGET_RESULT_SET = "ResultSet"; 
	/**
	 * View action --view action type.
	 */
	public static final String CHOICE_VIEW_ACTION = "viewAction"; 
	public static final String VIEW_ACTION_NO_CHANGE = "NoChange"; 
	public static final String VIEW_ACTION_CHANGED = "Changed"; 
	public static final String VIEW_ACTION_ADDED = "Added"; 
	public static final String VIEW_ACTION_DELETED = "Deleted"; 
	/**
	 * measure Function -- measure function type.
	 */
	public static final String CHOICE_MEASURE_FUNCTION = "measureFunction"; 
	public static final String MEASURE_FUNCTION_SUM = "sum"; 
	public static final String MEASURE_FUNCTION_COUNT = "count"; 
	public static final String MEASURE_FUNCTION_MIN = "min"; 
	public static final String MEASURE_FUNCTION_MAX = "max"; 
	/**
	 * Level type constants.
	 */
	String CHOICE_LEVEL_TYPE = "levelType"; 
	String LEVEL_TYPE_DYNAMIC = "dynamic";