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
catch ( SQLException e )
		{
			e.printStackTrace( );
		}
		return allSchemas;
	}
	
	/**
	 * 
	 * @return The Type of the object selected in the type combo ( Can be one of the following )
	 *   1) TABLE
	 *   2) VIEW
	 *   3) ALL
	 */
	private String  getSelectedDbType()
	{
		
		IStructuredSelection selection = (IStructuredSelection)filterComboViewer.getSelection();
		String type = DbType.ALL_STRING;
		if(selection != null && selection.getFirstElement() != null )
		{
			DbType dbType =  (DbType)selection.getFirstElement();
			
			switch ( dbType.getType())
			{
				case DbType.TABLE_TYPE:
					type = DbType.TABLE_STRING;
					break;
				case DbType.VIEW_TYPE:
					type = DbType.VIEW_STRING;