Bug 212505 Use default script ID to skip script debugging
In Dte side, when compile or evaluate java script, it would pass in a script source id. This kind of id is currenlty used by report script debugger. So to skip redundant processing for such kind of internal script evaluating, dte need pass in a default ID, which is defined as ScriptExpression.defaultID. If this id is already used for particular meaning and it can not pass in the default ID, we need define them as public constants and let script debugger check and skip them as well.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
assert false;
		return null;
	}
	/**
	 * Adapts the specified Model Data Set to a Data Engine API data set design
	 * object
	 */
	public IBaseDataSetDesign createDataSetDesign( DataSetHandle dataSet )
			throws BirtException
	{
		if ( dataSet instanceof OdaDataSetHandle )
			return newOdaDataSet( ( OdaDataSetHandle ) dataSet,
					context );
		if ( dataSet instanceof ScriptDataSetHandle )
			return newScriptDataSet( ( ScriptDataSetHandle ) dataSet,
					context );
		
		if ( dataSet instanceof JointDataSetHandle )
			return newJointDataSet( (JointDataSetHandle)dataSet, context);
		
		assert false;
		return null;
	}
	
	/**
	 * Define data set and data source in DataEngine
	 * @param dataSet
	 * @param dteEngine
	 * @throws BirtException
	 */