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
if ( item != null && item.length > 0 )
				availableDbObjectsTree.showItem( item[0] );
			
		}
		catch ( Exception e )
		{
			e.printStackTrace( );
		}
	}
	/**
	 * @param dbtype
	 * @param procedureRs
	 * @return
	 */
	private boolean needToCreateProcedureNode( String dbtype, ArrayList procedureRs )
	{
		return procedureRs!=null&& procedureRs.size()>0  && (DbType.ALL_STRING.equalsIgnoreCase(dbtype)||DbType.PROCEDURE_STRING.equalsIgnoreCase(dbtype) );
	}
	
	/**
	 * Connects the metadata provider to the specified data source
	 */
	protected Connection connectMetadataProvider( IMetaDataProvider metadata,
			DataSourceDesign dataSourceDesign )
	{
		return metadata.connect( dataSourceDesign );
	}
	/**
	 *  Create Metadata Provider