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/elements/interfaces/ILevelModel.java
*/
	String STATIC_VALUES_PROP = "staticValues"; 
	/**
	 * Name of the property that gives the interval base of search.
	 */
	String INTERVAL_BASE_PROP = "intervalBase"; 
	/**
	 * Name of the property that gives the interval range of search.
	 */
	String INTERVAL_RANGE_PROP = "intervalRange"; 
	/**
	 * Name of the property that gives the interval of search.
	 */
	String INTERVAL_PROP = "interval"; 
	/**
	 * Name of the property that indicates whether this level is static, dynamic
	 * or mirrored.
	 */
	String LEVEL_TYPE_PROP = "levelType"; 
	/**
	 * Name of the property that gives the data type of this level.
	 */
	String DATA_TYPE_PROP = "dataType"; 
	
	/**
	 * Name of the property that specifies a list of privilige of users.
	 */
	String VALUE_ACCESS_CONTROLS_PROP = "valueAccessControls"; 
}