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
* @return
	 */
	private boolean containsTableInSchema( String schemaName )
	{
		ResultSet rs = metaDataProvider.getAlltables( metaDataProvider.getCatalog( ),
				schemaName,
				"%",
				new String[]{
						"TABLE", "VIEW"
				} );
		boolean hasNonSystemTable = false;
		if ( rs != null )
		{
			try
			{
				while ( rs.next( ) )
				{
					if ( !"SYSTEM TABLE".equalsIgnoreCase( rs.getString( "TABLE_TYPE" ) ) )
					{
						hasNonSystemTable = true;
						break;
					}
				}
			}
			catch ( SQLException e )
			{
				e.printStackTrace( );
			}
		}
		if ( hasNonSystemTable )