Bug 123915 Add table-fetch limitation when DataSet Editor is populating table names.
When fetch table names from database of large volume of data, there lies a possibility that the editor window will be frozen because of the population of huge number of table names. This should be enhanced. A handy solution might be limiting the number of table names being fetched each schema.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
{
				isSchemaSupported = metaDataProvider.isSchemaSupported();
			}
		}
		catch(Exception e)
		{
			ExceptionHandler.handle( e );
		}
	}
	
	
	/**
	 *  Called to indicate that the process of getting the available Db objects
	 *   is in progress
	 *
	 */
	private void setRefreshInfo()
	{
		if ( rootNode == null )
		{
			return;
		}
		
		TreeItem item = new TreeItem(rootNode,0);
		item.setText(JdbcPlugin.getResourceString("tablepage.refreshing"));
	}
	private void selectNode(TreeItem item)
	{
		TreeItem[] selectedItem = new TreeItem[1];
		selectedItem[0] = item;