Bug 153387 Database item can't be dragged and dropped onto editor field
Steps to reproduce: 1.Start up BIRT in Mac OS X; 2.File->New->Project; 3.File->New->Report Design; 4.In Data Explorer, create a New Data Source, and choose "Classic Models Inc. Sample DataBase", press "Next" and then press "finish"; 5.In Data Explorer, create a New Data Set, press "Next"; 6.In the popup window, expand the "CLASSICMODELS", select and drag a item onto the editor field at right side.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
}
	
	/**
	 * 
	 * @param event
	 */
	private void populateEventData( TypedEvent event )
	{
		TreeItem[] selection = availableDbObjectsTree.getSelection( );
		String identifierQuoteString;
		try
		{
			identifierQuoteString = metaDataProvider.getMetaData( )
					.getIdentifierQuoteString( );
		}
		catch ( SQLException e )
		{
			identifierQuoteString = "";
		}
		if ( selection.length > 0 )
		{
			String data = "";
			for ( int i = 0; i < selection.length; i++ )
			{
				Object obj = selection[i].getData( );
				
				if ( obj instanceof DbObject )
				{
					data += SQLUtility.getDnDString( ( (DbObject) obj ).getName( ),
							identifierQuoteString,